Multi Type Air Conditioner SERVICE MANUAL MODEL Room Type Duct Type 1 Way CST • Indoor Unit: AMNH076LQL0 AMNH096BTG0 AMNH096TCC0 AMNH096LQL0 AMNC096TCC0 AMNH126BTG0 AMNH096LRL0 AMNH186BTG0 AMNH126TCC0 AMNH126LRL0 AMNC126TCC0 AMNH096BPA0 AMNH186LTL0 AMNH09GTCC0 AMNH126BPA0 AMNH246LTL0 AMNH186BHA0 AMNH12GTCC0 AMNH07GD4L0 AMNH246BHA0 4 Way CST...
Multi type Air Conditioner Service Manual TABLE OF CONTENTS Model Number Nomenclature ........................3 Symbols Used in this Manual ........................5 Safety Precautions............................6 Dimensions..............................12 Indoor Unit..............................12 Outdoor Unit ............................21 Product Specifications ..........................22 Installation ..............................32 Select the best location of indoor unit ....................32 How to fix ...............................35 Piping and Drainage of Indoor Unit ......................42 Connection of indoor unit piping......................43...
Model Number Nomenclature Model Number Nomenclature Indoor Unit Serial Number Function A : Basic, L : Nano Plasma + Auto Clean(Wall Mounted) C: Plasma(Ceiling Cassette), G: Low Static Motor ART COOL(DELUXE) Type Front Panel Color B : Blue, D : Wood, M : Meta, R : Mirror, W : White Chassis Name Indoor Unit Type L : Wall Mounted , A : ART COOL...
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Model Number Nomenclature Panel (Cassette, Built in Duct) Category CHASSIS PANEL NAME PANEL P/NO. SERIAL NO. Remark PT-CFA 3721A10072B 8435002992862 COOLING PT-CFC 3721A10072G 8435002992879 COOLING + PLASMA PT-HFA 3821A10072A 8435002992886 HEATING PT-HFC 3721A10072E 8435002992893 HEATING + PLASMA PT-CCA 3721A10023Z 8435002994095 COOLING PT-CCC 3721A10023W...
Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. I Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. WARNING This symbol indicates the possibility of death or serious injury.
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Safety Precautions Do not modify or extend the Do not install, remove, or re- Be cautious when unpacking power cable. install the unit by yourself and installing the product. (customer). • There is risk of fire or electric • There is risk of fire, electric shock, •...
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Safety Precautions Do not plug or unplug the Do not touch(operate) the Do not place a heater or other power supply plug during product with wet hands. appliances near the power operation. cable. • There is risk of fire or electric •...
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Safety Precautions Do not open the inlet grill of the product When the product is soaked Be cautious that water could during operation. (Do not touch the elec- (flooded or submerged), contact not enter the product. trostatic filter, if the unit is so equipped.) an Authorized Service Center.
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Safety Precautions Do not install the product Use two or more people to lift Do not install the product where the noise or hot air and transport the product. where it will be exposed to from the outdoor unit could sea wind (salt spray) directly.
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Safety Precautions Do not step on or put anyting Always insert the filter secure- Do not insert hands or other on the product. (outdoor ly. Clean the filter every two objects through the air inlet or units) weeks or more often if neces- outlet while the product is sary.
Dimensions Dimensions Indoor Unit 1. Split Type Indoor 2. Art Cool Type Indoor Unit Pipe Hole Hanger Hole Fix Hole Installation plate Model 7k, 9k 9k, 12k 18k, 24k 7k, 9k, 12k 18k, 24k 9k, 12k Dimension 1080 1090 12 Multi type Air Conditioner...
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Dimensions 3. Art Cool Deluxe Type SZ,SU,S3 Installation plate Installation plate MODEL 9K, 12K 18K, 24K 7K, 9K, 12K Unit 1030 1170 Service Manual 13...
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Dimensions 4. Duct Type BH/BG BT/BT1 MODEL 9K/12K 18K/24K 30K/36K 9K/12K W(mm) 1060 1180 H(mm) D(mm) 14 Multi type Air Conditioner...
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Dimensions 5. CVT Type VB(18K/24K) 63mm 38mm 250mm 175mm (Installation Plate) (Rear Side) VE(8K/12K) Installation plate MODEL 9K/12K 18K/24K Unit 1200 Service Manual 15...
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Dimensions 6. CST Type - TC,TC1 (9K/12K) 1,000 (Ceiling opening) 931.6 893.4 (Hanging bolt) 931.6 893.4 16.7 42.7 91.6 97.7 116.3 Ø80 141.8 Ø55 1050 694.5 (unit : mm) Number Name Descripition Liquid pipe connection ø6.35 flare Gas pipe connection ø9.52 flare Drain pipe connection Power supply connection...
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Dimensions 7. CST Type - TE(1) (9K/12K/18K) 600 (Ceiling opening) 521(Hanging bolt) 39.5 39.5 570 Unit size Unit:mm CLOSE OPEN OPEN CLOSE (unit : mm) Number Name Descripition Liquid pipe connection ø6.35 flare Gas pipe connection 9k: Ø9.52, 12k: Ø9.52, 18k: Ø12.7 flare Drain pipe connection Power supply connection Air discharge grill...
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Dimensions 8. CST Type - TF (24K/30K) 790 (Ceiling opening) 572(Hanging bolt) 744 Unit size Unit:mm (unit : mm) Number Name Descripition Liquid pipe connection ø6.35 flare Gas pipe connection ø12.7 flare-24K, ø15.88 flare-30K Drain pipe connection Power supply connection Air discharge grill Air suction grill 18 Multi type Air Conditioner...
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Dimensions 9. CST Type - TH (24K) 862 (Ceiling opening) 688(Hanging bolt) Unit:mm (unit : mm) Number Name Descripition Liquid pipe connection ø6.35 flare Gas pipe connection ø12.7 flare-24K, ø15.88 flare-30K Drain pipe connection Power supply connection Air discharge grill Air suction grill Service Manual 19...
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Dimensions 10. CST Type - TD(36K) 875 (Ceiling opening) 785 (Hanging bolt) 840 Unit size Unit:mm Fresh Air Inlet (unit : mm) Number Name Descripition Liquid pipe connection ø6.35 flare Gas pipe connection ø15.88 flare Drain pipe connection Power supply connection Air discharge grill Air suction grill 20 Multi type Air Conditioner...
Installation Installation Read completely, then follow step by step. Select the best location of indoor unit 1. Split Type Indoor Unit Front There should not be any heat source or steam near the • unit. Left • There should not be any obstacles to prevent the air circulation.
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Installation 3. Art Cool Deluxe Type Indoor unit • Do not have any heat or steam near the unit. More than 30cm More than 20cm • Select a place where there are no obstacles in front of the unit. • Make sure that condensation drainage can be conveniently routed away.
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Installation 6. CVT Type Indoor Unit More than 20cm • There should not be any heat source or steam near the unit. More than 20cm • There should not be any obstacles to prevent the air circulation. • A place where air circulation in the room will be good. More than eye-level •...
Installation How to fix 1. Room Type Indoor Unit Installation Installation Plate The mounting wall should be strong and solid enough to protect it from the vibration. 1) Mount the installation plate on the wall with four Type "A" screws. (If mounting the unit on the concrete wall, consid- marking-off line Type "A"...
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Installation 2. Art Cool Type Indoor Unit 2) Cover pipe and cover side remove • Remove two screws(for fixing cover pipe) The wall you select should be strong and solid enough • Pull up the cover side of desired connecting direc- to prevent vibration tion, then cover side is separated.
Installation I Sticking the installation guide map and fixing Indoor unit 1. Put an Installation Guide Map on the desired 7. Drill the piercing part for connecting pipe as surface. diameter 50mm. (In case of piercing rear surface) INSTALLATION GUIDE MAP Refer to No.
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Installation 3. Art Cool Deluxe Type Indoor Unit 3). Drill a hole in the wall • Drill the piping hole with a ø70mm hole core drill. Drill The wall you select should be strong and solid enough the piping hole at either the right or the left with the to prevent vibration hole slightly slanted to the outdoor side.
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Installation 4. Duct Type Indoor Unit - BH chassis Install the unit above the ceiling correctly. CASE 1 POSITION OF SUSPENSION BOLT • Apply a joint-canvas between the unit and duct to absorb unnecessary vibration. • Apply a filter Accessory at air return hole. (Unit:mm) Dimension (G) H...
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Installation - BT chassis Install the unit above the ceiling correctly. CASE 1 POSITION OF SUSPENSION BOLT • Apply a joint-canvas between the unit and duct to absorb unnecessary vibration. • Apply a filter Accessory at air return hole. (Unit:mm) Dimension Capacity 9k, 12k...
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Installation - BP chassis Install the unit above the ceiling correctly. CASE 1 POSITION OF SUSPENSION BOLT • Apply a joint-canvas between the unit and duct to absorb unnecessary vibration. • Apply a filter Accessory at air return hole. (Unit:mm) Dimension Capacity 9k,12k...
Installation Piping and Drainage of Indoor Unit 1. Preparation of pipings Pipe cutter 1) Cut the pipes and the cable. • Use the accessory piping kit or the pipes pur- chased locally. Slanted Rough • Measure the distance between the indoor and the outdoor unit.
Installation Connection of indoor unit piping 1. Split Type Indoor Unit 3. Tape the tubing, drain hose and the connecting cable. Be sure that the drain hose is located at the • Preparing the indoor unit's piping and drain hose lowest side of the bundle.
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Installation • When extending the drain hose at the indoor unit, For right rear piping install the drain pipe. 1. Route the indoor tubing and the drain hose to the required piping hole position. Drain pipe Indoor unit drain hose Vinyl tape(narrow) Adhesive 6.
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Installation 6) Connecting the pipings to the indoor unit and the 8) Reroute the pipings and the drain hose across the drain hose to drain pipe. back of the chassis. • Align the center of the pipings and sufficiently tighten the flare nut by hand. Indoor unit tubing Flare nut Pipings...
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Installation 2. Art Cool Type Indoor Unit • When extending the drain hose at the indoor unit, install the drain pipe. • Preparing the indoor unit's piping and drain hose for installation through the wall. 1) Route the indoor tubing and the drain hose in the direction of rear left or right.
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Installation I Panel Assembly 1. First, Check the side cover assembly exactly, Fix power cord in the bottom groove of cover side left. 2. Assemble connecting lead wire with controller and first fix the upper part of panel front, then match the lower part of panel front Panel Front Connector...
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Installation 3. Art Cool Deluxe Type Indoor Unit NOTE: If the drain hose is routed inside the room, insulate the hose with an insulation material* so that Connection of piping Indoor dripping from "sweating"(condensation) will not damage • Preparing the indoor unit's piping and drain hose for furniture or floors.
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Installation 5. Wrap the insulation material around the connecting 4. Tape the drain hose and the connecting cable. portion. • Connecting cable • Overlap the connection pipe insulation material and the indoor unit pipe insulation material. Bind them together with vinyl tape so that there is no gap. Plastic bands Insulation material 5.
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Installation 7. Wrap the insulation material around the con- 9. Set the pipings and the drain hose to the back of necting portion. the chassis with the tubing holder. • Overlap the connection pipe heat insulation and the • Hook the edge of tubing holder to tap on chassis and indoor unit pipe heat insulation material.
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Installation CAUTION • Bad case Following bending type from right to left could cause problem Installation Information (For left piping) of pipe damage. • Good case For left piping. Follow the instruction below. • Press on the upper side of clamp. ( ) •...
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Installation 4. Duct Type Indoor Unit 1) Indoor Unit Installation • Select and mark the position for fixing bolts. • Drill the hole for set anchor on the face of ceiling. Old building New building • Insert the set anchor and washer onto the suspen- sion bolts for locking the suspension bolts on the ceil- ing.
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Installation 5. CVT Type Indoor Unit - VB chassis I Before Installing, prepare Installation Plates Side Plate • 'Installation Plates' are attached at the bottom of indoor unit. Detach them by removing each 3 screws at both sides. Install Plate •...
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Installation • Insert the nuts and washer onto the suspension bolts Anchor nut for locking the suspension bolts on the ceiling. Ceiling • Mount the suspension bolts to the anchor-nuts firmly. • Secure the Installation plates onto the Suspension Washer bolts (adjust level roughly.) using nuts, washers and Suspension bolts...
Installation - VE chassis The wall you select should be strong and solid enough to prevent vibration Installation Plate 1. Mount the installation plate on the wall with type "A" screws. If mounting the unit on a con- crete wall, use anchor bolts. •...
Installation • Secure the Installation plates onto the Suspension bolts (adjust level roughly.) using nuts, washers and Anchor nut spring washers. Ceiling • Engage 2 hooks on the both left and right side of the Washer unit to the lower slot of Installation Plates. Suspension bolts •...
Installation CAUTION: Installation Information For Declination CAUTION 1. Install declination of the indoor unit is very important for the drain of the convertible type air conditioner. 2. Minimum thickness of the insulation for the connecting pipe shall be 7mm. 3. If the Installation Plates are fixed to horizontal line, the indoor unit after installing will be declined to the bottomside.
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Installation • Secure the unit to the Installation Plates with four M8 bolts and washers. • Before working, refer to "Connecting pipe and cable to Indoor Unit". • Hook up the Inlet Grille Hook to the cabinet. Inlet hanger • Hang the Inlet Hanger to the screw. Hook Cabinet Bottom •...
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Installation 2) Installation on the Wall • Select and mark the position for fixing bolts and piping hole. Decide the position for fixing bolts slightly tilted to the drain direction after considering the direction of drain hose. • Drill the hole for anchor nut on the wall. •...
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Installation Install the Indoor unit onto Installation Plate. • Insert 2 hooks on the both left and right side of the unit Inner slot to the inner slot (wall side) of the Installation Plate. • Secure the unit to the Installation Plate with four M8 bolts and washers.
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Installation 3) Installation on the floor From the left wall Installation of Mount Bracket. more than 760mm • Select and mark the position for Mount Brackets and the piping hole. • Drill the hole for the anchor nut on the wall. From the right wall •...
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Installation 6. Ceiling Cassette Type Indoor Unit - TC, TC1 chassis 1) Ceiling opening dimensions and hanging bolt location • The dimensions of the paper model for installing are 1,000 (Ceiling opening) the same as those of the ceiling opening dimen- 931.6 sions.
Installation 2) Indoor Unit Installation Ceiling Keep the length of the bolt Hanging bolt from the bracket to 40mm (W3/8 or M10) Flat washer for M10 (W3/8 or M10) (accessory) Air Conditioner body Ceiling board Ceiling board Spring washer (M10) Flat washer for M10 (accessory) Paper model...
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Installation 7. Ceiling Cassette Type Indoor Unit - TE(1)/TF/TH/TD chassis 1) Ceiling opening dimensions and hanging bolt location 600 (Ceiling opening) TE(1) • The dimensions of cardboard for installing are the same as those of the ceiling opening dimensions. 521(Hanging bolt) 39.5 39.5 Ceiling...
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Installation NOTE: • Avoid the following installation location. 1. Such places as restaurants and kitchen where considerable amount of oil steam and flour is generated. These may cause heat exchange efficiency reduction, or water drops, drain pump mal-function. In these cases, take the following actions; •...
Installation Remote Controller Installation • Although the room temperature sensor is in the indoor unit, the remote controller should be installed in such places away from direct sunlight and high humidity. Installation of the remote controller • Select places that are not splashed with water. •...
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Installation REMOTE CONTROL PREPARATION(OPTIONAL) HOW TO MOUNT ONTO A WALL HOW TO INSERT BATTERIES HOW TO INSERT BATTERIES Remove the battery cover from the remote con- troller. • Slide the cover according to the arrow direction. • Do not use rechargeable batteries, such batteries differ from standard dry Insert the two batteries.
Installation Connecting Pipings and the cable to Outdoor unit 1. Connecting the pipings to the Outdoor 2) Align the center of the pipings and sufficiently tight- en the flare nut by hand unit 1) When piping installation work you must be used the connector.
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Installation CAUTION: If a power plug is not to be used, provide a circuit breaker between power source and the unit as shown below. Main power source Circuit Breaker Conditioner Use a circuit breaker or time delay fuse. CAUTION The power cord connected to the outdoor unit The connecting cable connected to the indoor should be complied with the following specifica- and outdoor unit should be complied with the...
Installation Electrical characteristics Unit Power Compressor Model Type Voltage Voltage range A6UW3686FA0 6.75 12.15 0.065*2 0.46*2 [FM37AH UE0] A7UW428FA0 15.0 0.12*2 0.73*2 [FM414AH UH0] MIN.:342 380~415 inverter MAX.:456 A8UW488FA0 10.2 17.2 0.12*2 0.73*2 [FM49AH UH0] A9UW548FA0 11.0 18.6 0.12*2 0.73*2 [FM57AH UH0] Notes : 1.
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Installation Checking the Drainage and Pipe forming 1. Split Type Indoor Unit 1) Remove the Grille from the cabinet • Set the up-and-down air direction louver to open position(horizontally) by finger pressure. • Remove the securing screws. Screw • To remove the Grille, pull lower the left and Pull the right and right side of the grille toward you (slightly tilted) the left side.
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Installation 3. Art Cool Deluxe Type Indoor Unit 3) Drain piping • The drain hose should point downward for easy drain 1) To remove the front panel from the indoor unit. flow. • Set the air direction louvers up-and-down to the posi- tion(horizontally) by hand.
Installation 4. Convertible Type Indoor Unit To remove the front panel from the indoor unit. 1. Set the air direction louvers up-and-down to the posi- tion(horizontally) by hand. 2. Remove the securing screws that retain the front panel. Pull the lower left and right sides of the grille Pull the right and toward you and lift it off.
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Installation 5. Duct Type Indoor Unit 1. Install declination of the indoor unit is very important for the drain of the duct type air conditioner. 2. Minimum thickness of the insulation for the connecting pipe shall be 5mm. Front of view •...
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Installation 6. CST Type Indoor Unit Upward • Drain piping must have down-slope (1/50 to 1/100): Pipe clamp routing be sure not to provide up-and-down slope to prevent not allowed reversal flow. Indoor unit • During drain piping connection, be careful not to exert extra force on the drain port on the indoor unit.
Installation Maximum Length of Pipe and Extra Charge of Refrigerant Charge 1. Inverter Multi -Distributor 1.1 The maximun allowable level and piping length Branch Pipe Distributor Distributor Main Pipe Distributor Type Capacity Max Main Pipe Total Branch Max Branch Max Elevation In - In Elevation Total Length (Btu/h)
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Installation 1.3 Refrigerant charge The calculation of the additional charge should be taken in account for the length of pipe. • Total main pipe(A+B+C) = 30m • Each branch pipe a = 10m b = 8m ex) A7UW428FA0 c = 5m d = 3m e = 10m ❖...
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Installation 1.4 Piping connection size I A6UW368FA0 Liquid Ø6.35 Adjust to indoor unit piping size Ø15.88 BD Unit A6UW368FA0 Branch unit A6UW368FA0 1. While piping installation you must use the connector Liquid Ø19.05 ➔ Ø15.88 Ø9.52 ➔ Ø6.35 [Connector] 2. Align the center of the pipings and sufficiently tighten the flare nut by hand. Outdoor unit Socket(Included in Outdoor Unit)
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Installation I A7UW42/A8UW48/A9UW548FA0 Liquid Ø 9.52 Adjust to indoor unit piping size Ø19.05 BD Unit A7UW428FA0 A8UW488FA0 A9UW548FA0 Branch unit BD Unit A7UW428FA0 A8UW488FA0 A9UW548FA0 BD Unit A9UW548FA0 Branch unit Service Manual 79...
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Installation 1.5 Necessity of a trap Since there is fear of the oil held inside the riser piping flowing back into the compressor when stopped and causing liquid compression phenomenon, or cases of deterioration of oil return, it will be necessary to pro- vide a trap at an appropriate place in the riser gas pip- ing.
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Installation 1.6 Branch (Accessory) Y- Branch [unit:mm] Gas Pipe Liquid Pipe Ø19.05 Ø9.52 Ø19.05 Ø9.52 Ø9.52 Ø19.05 • Included in outdoor unit. • Included in outdoor unit. Y branch To Outdoor Unit To BD Unit • Ensure that the branch pipes are attached horizontally or vertically (see the diagram below.) Tape (field supply) Liquid and gas...
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Installation Branch kit [unit:mm] Gas Pipe Liquid Pipe Ø9.52 Ø9.52 Ø19.05 • When installing the branch pipe, direction and angle of installation is not limited. • Take care so that burrs and foreign material may not enter into the cutting surface when connecting. Thermal insulation work •...
Installation Test Running SPLIT, ART cool, ART cool deluxe Type 1. Check that all tubing and wiring have been properly con- Bolt nected. 2. Check that the gas and liquid side service valves are fully open. 1) Prepare remote controller Remove the battery cover by pulling it according to the arrow direction.
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Installation CVT Type 1) Connection of power supply 1. Connect the power supply cord to the inde- pendent power supply. • Circuit breaker is required. 2. Prepare the remote control. • Insert two batteries provided. Remove the battery cover from the remote con- troller.
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Installation Ceiling Cassette Type 1) PRECAUTIONS IN TEST RUN • The initial power supply must provide at least 90% of the rated voltage. Otherwise, the air conditioner should not be operated. For test run, carry out the cooling operation first even during winter season. If heating operation is Caution carried out first, it leads to the trouble of compressor.
Installation System Layout and Piping Length For installation of the indoor units. Follow the instructions in the installation manual for each unit. System Layout Distributor Unit Branch For 2 rooms : PMBD3620 (Ø9.52, Ø6.35) For 5~8 rooms : Y- Branch For 3 rooms : PMBD3630 (Ø9.52, Ø6.35) For 9 rooms : Branch kit For 4 rooms : PMBD3640 (Ø9.52, Ø6.35)
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Installation A7UW428FA0 [FM41AH UH0] Installation of the outdoor unit is at higher elevation than the indoor units. BD Unit Max 30m BD unit Main piping Branch piping [Unit: m] [Unit: m] A7UW428FA0 A7UW428FA0 Piping Maximum elevation difference [FM42AH UH0] [FM42AH UH0] Indoor unit ↔...
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Installation A8UW488FA0 [FM49AH UH0] Installation of the outdoor unit is at higher elevation than the indoor units. BD Unit BD unit Max 30m Main piping Branch piping [Unit: m] [Unit: m] A8UW488FA0 A8UW488FA0 Piping Maximum elevation difference [FM49AH UH0] [FM49AH UH0] Indoor unit ↔...
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Installation A8UW548FA0 [FM57AH UH0] Installation of the outdoor unit is at higher elevation than the indoor units. BD Unit BD Unit Max 30m Branch piping Main piping BD Unit [Unit: m] [Unit: m] A9UW548FA0 A9UW548FA0 Piping Maximum elevation difference [FM57AH UH0] [FM57AH UH0] Indoor unit ↔...
Installation Installation • This unit may be installed suspended from the ceiling or mounted on the wall. • This unit may only be installed horizontally , as shown in the diagram below. (Side B is facing up) However, it may be freely installed in any direction, forward or backward, and to the sides.
Installation Installation of The Main Unit NOTICE • This unit has two different installation types: (1) Ceiling-suspended type and (2) wall-mounted type. • Choose the proper installation pattern according to the location of installation. • The installation location for printed wiring board can be changed.
Installation Connection of Piping • When connecting indoor units, make sure to connect refrigerant pipes and connection wires to the appropriate con- nection ports maked with matching alphabets. (A, B, C, D) NOTICE • Be sure to mark all the local refrigerant piping(liquid pipes, gas pipes, etc.) for each indoor unit designating clearly which room it belongs in.(A, B, C, D) NOTICE...
Installation Connection of Wiring • Connect refrigerant pipes and connection wires to the appropriate ports maked with matching alphabets (A, B and C) on this unit. • Follow the instructions on the wiring nameplate to connect the connection wires of indoor/outdoor units to terminal board numbers.(1, 2 and 3) Always fix each ground wire separately with a ground screw.(See the figure below.) •...
Operation Operation Function of control 1. MAIN UNIT FUNCTION • DISPLAY Operation Indicator • On while in appliance operation, off while in appliance pause • Flashing while in disconnection or short in Thermistor (3 sec off / 0.5 sec on) Sleep Timer Indicator •...
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Operation operates with the low or setting speed. When the indoor pipe temp is between 20°C and 27°C, it operates with Super-Low(while in sleep mode, with the medium airflow speed). • While compressor off, the indoor fan is off when the indoor pipe temp is below 33°C, when above 35°C , it operates with the low airflow speed.
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Operation 2) Fuzzy Operation for Dehumidification • According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on.
Operation I Off-Timer <=> On-Timer Operation • When the set time is reached after the on/off time is input by the remote control, the on/off-timer operation is carried out according to the set time. I Sleep Timer Operation • When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote control while in appli- ance operation, the operation of the appliance stops.
Operation I Forced Operation • To operate the appliance by force in case that the remote control is lost, the forced operation selection switch is on the main unit of the appliance to operate the appliance in the standard conditions. •...
Operation Function of Indoor Unit Split Type Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature • Room temperature sensor. (THERMISTOR) Room temperature control • Maintains the room temperature in accordance with the Setting Temp. Starting Current Control •...
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Operation Art Cool Type Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature • Room temperature sensor. (THERMISTOR) Room temperature control • Maintains the room temperature in accordance with the Setting Temp. Starting Current Control • Indoor fan is delayed for 5 sec at the starting. Time Delay Safety Control •...
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Operation Art Cool Deluxe Type Remote Controller Operation ON/OFF Operation Mode Selection Cooling Operation Mode.( Auto Operation Mode.( (Cooling (Heating Healthy Dehumidification Operation Mode.( Heating Operation Mode.( model only) model only) Fan Speed Selection (Low) (Med) (High) Room, Temperature Checking : (High:39°C Low:11°C) Temperature Setting...
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Operation Duct Type Remote Controller Operation ON/OFF Operation Mode Selection Cooling Operation Mode ( Soft Dry Operation Mode ( Heating Operation Mode ( Auto Operation Mode ( (Cooling (Heating model only) model only) Fan Speed Selection (Low) (Med) (High) Room Temperature Display : High:39°C ↔...
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Operation CST Type Remote Controller Operation ON/OFF Operation Mode Selection Cooling Operation Mode ( Soft Dry Operation Mode ( Heating Operation Mode ( Auto Operation Mode ( (Cooling (Heating model only) model only) Fan Speed Selection AUTO (Super Low) (Low) (Med) (High) Room Temperature Display...
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Operation Convertible Type Remote Control Operation ON/OFF Operation Mode Selection Cooling Operation Mode.( Auto Operation Mode.( (Cooling (Heating Healthy Dehumidification Operation Mode.( Heating Operation Mode.( model only) model only) Fan Speed Selection (Low) (Med) (High) (CHAOS) Room, Temperature Checking : (High:39°C Low:11°C) Temperature Setting TEMPERATURE...
Operation Function of Outdoor Unit Outdoor Unit Two Comp algorithm • Inverter Comp is first priority and then Constant Comp is turning on responding to load condtion. Operating Frequency • Inverter Frequency varies considering condition such as room temp,outdoor temp, operating room number,Temp gap between room temp and set temp and so on.
Operation Remote Control Operation The Remote Controller transmits the signals to the system. START/STOP BUTTON Operation starts when this button is pressed and stops when the button is pressed again. Signal transmitter OPERATION MODE SELECTION BUTTON Used to select the operation mode. ROOM TEMPERATURE SETTING BUTTONS Used to select the room temperature.
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Operation Duct Type Remote Controller AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION Room Temp AUTO Heater Preheat Defrost Humidify Filter Out door Time 1 2 3 4 ZONE Timer Operation unit Program set Set no. Time Signal receiver Timer Cancel Program...
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Operation CST Type Remote Controller 1Way AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION Room Temp Heat Pump Model AUTO Heater Preheat Defrost Humidify Filter Out door 2ndF 1 2 3 4 Time ZONE Timer Operation unit No Func Program set Set no.
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Operation 1) Two Thermistor System (1) Open the rear cover of the wired remote-controller to set the mode. (2) Select one of three selectable modes as follows. • Position 1: The room temperature is controlled by the thermistor of the main body. •...
Operation 2) Group Control(Optional Wiring) • You can use a group control operation after connecting the brown and yellow wire of each air-conditioner. • Remove the resistor "OP 7" in remote controller. • It operates maximum 16 Units by only one Wired Remote Controller, and each Unit starts sequentially to prevent overcurrent.
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Operation 3) E.S.P.(External Static Pressure) Setting (1) Open the rear cover of the wired remote-controller to set the mode. (2) Select one of three selectable modes as follows. I Without Zone System 1. Position V-H, F-H: • This position sets the maximum E.S.P as a default set. 2.
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Operation 4) How to Set E.S.P? Procedure of RPM change: Ex) External Static pressure is 4mmAq for Model 36K. • To protect the unit, compressor is designed to be off during E.S.P. setting. Push the"On/Off"button. The unit will start. AUTO SWING OPERATION SET TEMP FAN SPEED SUB FUNCTION...
Control Devices and Function Control Devices and Function Simple Central Control Features • Easy operation button. • Independent operation for 16 indoor units each. • Simultaneous turn ON/OFF for all of indoor units connected. • Easy change operation mode to cooling or heating •...
Control Devices and Function Electrical wiring I PICTORIAL VIEW OF THE CONNECTION Outdoor unit Outdoor unit PI485 : PNF-P14A0M MAIN PCB PI485 MAIN PCB Control Box CN_CENTRAL MAIN PCB CN_CENTRAL PI485 CENTRAL CONTROL CN OUT UNIT • Special purchase: Central control, PI485(PNF-P14A0M) I ONE SIMPLE CENTRAL CONTROL CONNECTION INDOOR UNIT INDOOR UNIT 1...
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* LGAP : LG Air conditioners Protocol • Function of LG Network - It is possible to connect the network of LG air conditioners and to connect various contents of the network system, which is simple, deluxe and PC central control.
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Control Devices and Function Indoor Unit Address setting Method 1. Press 13(program) and 16(set and clear) key more Using Wired Remocon than 3 second then "Address Setting Mode" starts. 2. Set the address of indoor unit by using "Temperature setting" key. I Range of address : 00 ~ FF AUTO SWING OPERATION...
Control Devices and Function Test run method 1. Set the wiring of system and indoor unit. 2. Apply power to the setting. 3. Do auto addressing to the outdoor unit. 4. After addressing, initialize the central controller(Manual initialize: Total on + total off + 16 key). •...
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Control Devices and Function I INSTALLATION ORDER Remove upper & lower case. Fixate screw in the holes of the For Dip switch, and Rotary case bottom. switch setting, refer to the page “How to Install”. For wiring connection, refer page Adjust the upper case in accor- Check the operation by supply- “Installation Procedure”...
Control Devices and Function I. ROTARY SWITCH SETTING(INSTALLATION FOR 2 OR MORE SIMPLE CENTRAL CONTROL) The setting of Group Number in the Central Control is done by the rotary switch as shown in the figure below. It is possible to set 0~15 Group(Total 16 Groups). All the numbers on the rotary switch represent the different Group Numbers.
Control Devices and Function Deluxe Central Control 2.1.1 Summary Deluxe Central control is a product available for individual and integrated monitoring and control of maximum 256 of TPS Inverter Multi air conditioner systems. Specially, operation status of the individual air conditioner can be particularly checked.
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Control Devices and Function Major Characteristics Figure 2) Deluxe Central control 1. Individual/Integrated Operation/Monitoring I You can identify operation status of the air conditioner, operation mode, wind quantity, wind direction, lock- ing, temperature setting and error, etc by selecting the installed air conditioner through individual selection, group selection or all selection.
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Control Devices and Function 6. Convenient GUI / Touch Screen I Not requires special education for using the Deluxe Central control, conveniently used only by pressing the buttons on the screen, and its function can be understood with intuitive pictogram. Especially schedule setting is done by simply by dragging, different from the existing system requiring to press the button by more than average 30 times to enter a schedule.
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Control Devices and Function Figure 3) Deluxe Central control Table 1) Comparison Between Central control Characteristics Internet Central control PC Central control Deluxe Central control Dedicate PC Non-required Required Non-required Configuration User S/W User S/W, Engine S/W Main Body of Web Pad Deluxe Central control Position of program Download to i-GW...
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Control Devices and Function Major Function of Deluxe Central Control [ System Control ] To check general monitor function of the air con central control system such as selection of group and air conditioner, air conditioner control monitor function etc. PQCSW501A0, PQCSW502A0 [ System Monitor ] To check the ctual time status of all air conditioners.
Control Devices and Function System Configuration Scenario 1 : In case of not using Internet access function Product B part A part Control System Interface Delux Central PI485 Control PI485 Cross UTP Cable (Cross LAN Cable) RS-485 Cable PI485 PI485 * CNU: Central control Network interface Unit PI485: Product Interface unit for IEEE485 transmission.
Disassembly of the parts Disassembly of the parts (Indoor unit) Indoor unit 1. Split Type Indoor unit CAUTION: Disconnect the unit from power supply before making any checks. Be sure the power switch is set to “OFF”. To remove the Grille from the Chassis. •...
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Disassembly of the parts 2) To remove the Control Box. • Remove securing screws. • Pull the control box out from the chassis care- fully. 3) To remove the Discharge Grille. • Pull the discharge grille out from the chassis carefully.
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Disassembly of the parts 2. Art Cool Type Indoor Unit CAUTION: Disconnect the unit from power supply before making any checks. Be sure the power switch is set to “OFF”. 1. To remove the Grille from the Chassis. - Pull the grille bottom, the remove 2 securing screws. - Lift the both lower parts of panel front.
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Disassembly of the parts 3) To remove the Evaporator. - Remove 4 screws securing the evaporator. - Pull the evaporator out from the chassis carefully. 4) Before removing the Turbo Fan. Air Guide - Remove the securing screws from the chassis. Top Cover - Pull the pipe cover, top cover and the air guide.
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Disassembly of the parts 3. Art Cool Deluxe Type Indoor Unit(SZ,SU,S3) CAUTION: Disconnect the unit from power supply before making any checks. Be sure the power switch is set to “OFF”. To remove the Grille from the Chassis. • Hold up Inlet Grille Horizentally. •...
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Disassembly of the parts 4. Art Cool Deluxe Type Indoor Unit(SE) CAUTION: Disconnect the unit from power supply before making any checks. Be sure the power switch is set to “OFF”. To remove the Grille from the Chassis. • Hold up Inlet Grille Horizentally. •...
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Disassembly of the parts 2) To remove the Control Box. • Remove securing screws. • Pull the control box out from the chassis careful- 3) To remove the Discharge Grille. • Unhook the discharge grille and pull the dis- charge grille out from the chassis carefully. 4) To remove the Evaporator.
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Disassembly of the parts • Unhook the tab on the right inside of the chassis at the same time, slightly pull the evaporator toward you until the tab is clear of the slot. 5) To remove the Motor Cover • Remove 2 securing screw. •...
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Disassembly of the parts 3. CVT Type - VB chassis Warning : Disconnect the unit from power supply before making any checks. Be sure the power switch is set to “OFF”. 1. Remove the air filter. • Pull the inlet grille slightly toward you. •...
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Disassembly of the parts VE chassis Warning : Disconnect the unit from power supply before making any checks. Be sure the power switch is set to “OFF”. To remove the Grille from the Chassis. • Set the up-and-down air discharge louver to open position (horizontally) by finger pressure.
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Disassembly of the parts 2. To remove the Control Box. • Remove securing screws. • Pull the control box out from the chassis carefully. 3. To remove the Discharge Grille. • Unhook the discharge grille and pull the discharge grille out from the chassis carefully. 4.
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Disassembly of the parts • Unhook the tab on the right inside of the chassis at the same time, slightly pull the evaporator toward you until the tab is clear of the slot. 5. To remove the Motor Cover • Remove 2 securing screw. •...
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Disassembly of the parts 4. Remove air guide upper, crossflow fan and motor. • Remove the screws of both sides and center securing the upper air-guide. • Remove 2 screws fastening the bracket of door switch. Door Switch • Remove a bearing assembly by removing a screw and the bearing cover.
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Disassembly of the parts 6. Remove the front panel. Diffuser frame • Remove the screws of both sides fixing the front Diffuser panel. frame • Push the upper side of front panel strongly to pull Hook out the front panel from the inner hook of diffuser Front frame.
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Disassembly of the parts 9. Remove the vane-upper, vane-lower and step motor. Step Motor • Remove 2 screws securing the step motor Vane Supporter assembly and pull it out from the vanes carefully. • Unhook the vanes from the vane supporter and remove the upper vane and lower vane by pulling the center of vanes with care.
Schematic Diagram Schematic Diagram Electronic Control Device 1. Indoor Unit 1) Split Type C02F,0.01/50V C01F,0.01/50V R01T,10K R02T,10K R03T,10K R04T,10K R05T,10K 142 Multi type Air Conditioner...
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Schematic Diagram 2) Art Cool Type Service Manual 143...
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Schematic Diagram 3) Art Cool Deluxe Type • A/C MOTOR 144 Multi type Air Conditioner...
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Schematic Diagram 3) Art Cool Deluxe Type • BLDC MOTOR Service Manual 145...
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Schematic Diagram 4) Duct Type 146 Multi type Air Conditioner...
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Schematic Diagram 5) Convertible Type Service Manual 147...
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Schematic Diagram 2. Outdoor Unit 1) A6UW368FA0, A7UW428FA0, A8UW488FA0, A9UW548FA0 Service Manual 149...
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Schematic Diagram 3. Central control unit Schematic diagram R 0 8 S R 0 7 S R 0 6 S R 0 5 S TXD1 OSC01B Xtal1 RXD1 14.7456 R01B Xtal2 RXD2 TXD2 150 Multi type Air Conditioner...
Schematic Diagram Wiring Diagram 1. Room Type Indoor Unit -SQ/SR/ST chassis 2. Art Cool Type Indoor Unit AC PCB ASM DC PCB ASM AC PWB ASM DC PWB ASM THERMISTOR(OUT-PIPE) THERMISTOR(OUT-PIPE) THERMISTOR(IN-PIPE) MOTOR THERMISTOR(ROOM) THERMISTOR(IN-PIPE) THERMISTOR(ROOM) STEP MOTOR STEP MOTOR STEP MOTOR FUSE...
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Schematic Diagram 6. Duct Type Indoor Unit - BH/BP chassis 7. CVT Type Indoor Unit - VE chassis WIRING DIAGRAM WIRING DIAGRAM IN-PIPE. OUT-PIPE. ROOM. STEP CENTRAL CONTROL REMOTE A/CL MOTOR THERMISTOR THERMISTOR THERMISTOR TELE CONTROL CONTROL UNIT HEATER DRY CONTACT S/W2 CN-UD1 CN-CC...
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Schematic Diagram 12. CST Type Indoor Unit - TC chassis 13. CST Type Indoor Unit - TC1 chassis INDOOR WIRING DIAGRAM TEMP. PIPE IN FLOAT S/W THERMISTOR THERMISTOR CAPACITOR CN-ROOM CN-PIPE1 CN-FLOAT MAIN PCB ASSY CN-MOTOR INDOOR MOTOR CN-DPUMP STEP MOTOR DRAIN PUMP...
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Schematic Diagram 5. Outdoor Unit 1. A6UW386FA0 2. A7UW428FA0, A8UW488FA0, A9UW548FA0 154 Multi type Air Conditioner...
Schematic Diagram 6) Convertible type • VE chassis AC part TOP VIEW BOTTOM VIEW DC part TOP VIEW BOTTOM VIEW 164 Multi type Air Conditioner...
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Schematic Diagram • VB chassis Service Manual 165...
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Schematic Diagram • VB chassis TOP VIEW BOTOM VIEW 166 Multi type Air Conditioner...
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Schematic Diagram 2. Display ASSEMBLY 1) Split Type 2) Convertible Type VE chassis TOP VIEW PWB ASM:6871A20390 PCB:6870A90065K BOTTOM VIEW VB chassis 3) Art Cool Type TOP VIEW BOTTOM VIEW Service Manual 167...
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Schematic Diagram 4) Art Cool Deluxe Type TOP VIEW BOTTOM VIEW 5) Art Cool Mirror TOP VIEW BOTTOM VIEW 168 Multi type Air Conditioner...
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Schematic Diagram 3. Outdoor Unit 1) Component side Service Manual 169...
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Schematic Diagram 2) Solder side 170 Multi type Air Conditioner...
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Schematic Diagram 3) Central control PCB) 1) Top View 2) Bottom View Service Manual 171...
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Schematic Diagram 4. SUB P.W.B ASSEMBLY 1) Art Cool Type TOP VIEW BOTTOM VIEW 172 Multi type Air Conditioner...
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Troubleshooting Guide 2. BD Unit D Liquid(Ø9.52) C Liquid(Ø9.52 or Ø12.7) B Liquid(Ø9.52 or Ø12.7) A Liquid(Ø9.52 or Ø12.7) D Liquid(Ø6.35) C Liquid(Ø6.35) B Liquid(Ø6.35) A Liquid(Ø6.35) [Indoor Unit] 174 Multi type Air Conditioner...
Troubleshooting Guide Self-diagnosis Function I Error Indicator • The function is to self-diagnosis air conditioner and express the troubles identification if there is any trouble. • Error mark is ON/OFF for the operation LED of evaporator body in the same manner as the following table. •...
Troubleshooting Guide Cycle Troubleshooting Guide Trouble analysis 1. Check temperature difference between intake and discharge air, and operating current. Temp. difference : approx. 0°C All amount of refrigerant leaked out. Current : less than 80% of Check refrigeration cycle. rated current Temp.
Troubleshooting Guide Electronic Parts Troubleshooting Guide ❇ Refer to electronic contorol device drawing & schematic diagram. The Product doesn’t operate at all. Trouble 1 Turn off the main power and wait until LED on outdoor PCB is off. Turn on the main power again. Does "Beeping"...
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Troubleshooting Guide Product doesn't operate with the remote controller. Trouble 2 Turn on main power. While the compressor has been stopped, the compressor does not operate owing to the delaying function for 3 minutes after stopped. When the compressor stopped Indoor Fan is driven by a low speed. At this point the wind speed is not controlled by the remote controller.
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Troubleshooting Guide The Compressor/Outdoor Fan are don't operate Trouble 3 Turn on the main power. Operate Cooling Mode by setting the disired temperature of the remote controller is less than one of the Indoor temperature by 1°C at least. When in air circulation mode, compressor/outdoor fan is stopped. Check the sensor for Indoor temperature is attatched as close as to be effected by the themperature of Heat Exchange (EVA.) When the sensor circuit for Indoor temperature and connector are in bad...
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Troubleshooting Guide When indoor Fan does not operate. Trouble 4 Turn off main power. Check the connection of CN-FAN. Check the Fan Motor. Check the Fuse(AC250V, T2A). Check the related circuit of indoor Fan Motor. • The pin No. of micom and the part for driving SSR.(Q01M) •...
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Troubleshooting Guide When the louver does not operate. Trouble 5 • Confirm that the vertical louver is normally geared with the shaft of Stepping Motor. • If the regular torque is detected when rotating the vertical louver with hands ⇒ Normal •...
Troubleshooting Guide General Information I Error Indicator (Indoor) • The function is to self-diagnosis air conditioner and express the troubles if there is any trouble. • Error mark is displayed on display window of indoor units and wired-remote controller, and LED of outdoor unit control board.
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Troubleshooting Guide I Error Indicator (Outdoor) Outdoor Error Ex) Error 21 (DC Peack) LED01G 2 Times 2 Times 2 Times (RED) 1 sec 1 sec 1 sec 1 Times 1Times 1Times LED02G (GREEN) 2 sec 2 sec LED02G Indoor Error LED01G Descriotion (Green)
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Troubleshooting Guide 1) Troubleshooting CH01, CH02, CH06 Display Title Cause of error Check point & Normal condition code • Open / Short Normal resistor : 10KΩ/ at 25°C (Unplugged) Indoor air sensor • Soldered poorly Normal voltage : 2.5Vdc / at 25°C (plugged) •...
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Troubleshooting Guide 2) Troubleshooting CH03 Display Title Cause of error Check point & Normal condition code • Connection of wire Communication • Open / Short • Main PCB Volt. DC12V Wired R/C • Wrong connection • Noise interference Wired R/C Indoor Unit CN-REMO 12Vdc...
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Troubleshooting Guide 3) Troubleshooting CH04 Display Title Cause of error Check point & Normal condition code • The connection of wire(Drain pump/ Float switch) • Drain pump power input. (220V) Drain pump • Float switch Open. • Drain tube installation. / Float switch (Normal : short) •...
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Troubleshooting Guide 4) Troubleshooting CH05, CH53 Display Title Cause of error Check point & Normal condition code • Power input AC 220V. (Outdoor, Indoor) • The connector for transmission is disconnected. Title • The connecting wires are misconnected. • Communication poorly Communication •...
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Troubleshooting Guide 5) Troubleshooting CH21 Display Title Cause of error Check point & Normal condition code • An instant over current in the U,V,W phase - Comp lock - The abnormal connection of U,V,W • Instant over current DC PEAK •...
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Troubleshooting Guide Troubleshooting CH21 Check the IPM (Measuring after Comp connector disconnect) 1) Test mode set diode mode( Measuring method A Measuring method B Measuring method Terminal N W V N W V 0.4~0.6V 0.4~0.6V RD(+) BK(-) 0.4~0.6V 0.4~0.6V RD(+) BK(-) 0.4~0.6V 0.4~0.6V...
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Troubleshooting Guide 6) Troubleshooting CH22 Display Title Cause of error Check point & Normal condition code Malfunction of compressor Blocking of pipe Max. C/T Over current Low voltage input Refrigerant, pipe length, blocked, … Check Point 1. Check the power source.(200~240V) 2.
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Troubleshooting Guide 7) Troubleshooting CH23 Display Title Cause of error Check point & Normal condition code • Check point & Normal condition • Check the TAB1 is connect. • DC Link volt is below DC Link Low voltage • At not operating : DC Link voltage(260V ) 300V •...
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Troubleshooting Guide 8) Troubleshooting CH24, CH25 Display Title Cause of error Check point & Normal condition code • Check the connection of “CN_Press”. • Low / High press Press S/W Open • Check the components. S/W open. Check the power source. •...
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Troubleshooting Guide 9) Troubleshooting CH26 Display Title Cause of error Check point & Normal condition code • Check the connection of comp wire “U,V,W” • Compressor DC Compressor • Malfunction of compressor Starting fail error Position • Check the component of “IPM”, detection parts. Check Point 1.
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Troubleshooting Guide 10) Troubleshooting CH32 Display Title Cause of error Check point & Normal condition code • Check the discharge pipe sensor for INV. • Check the install condition for over load. D-pipe (Inverter) • Discharge sensor • Check the leakage of refrigerant. temp.
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Troubleshooting Guide 11) Troubleshooting CH40 Display Title Cause of error Check point & Normal condition code • Malfunction of current detection circuit. (Open / Short) • Initial current error Sensor Error • The voltage of "C01N" Is 4.0Vdc(25A) . Figure 1. Figure 2.
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Troubleshooting Guide 12) Troubleshooting CH41, CH44, CH45, CH46, CH47, CH65 Display Title Cause of error Check point & Normal condition code • Open / Short • Normal resistor : 200KΩ / at 25°C (Unplugged) D-pipe sensor (Inverter) • Soldered poorly •...
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Troubleshooting Guide 13) Troubleshooting CH51, CH60 Display Title Cause of error Check point & Normal condition code Over capacity • Check the indoor unit capacity. • Over capacity • Check the combination table. • Check the PCB ASM P/No. Over capacity •...
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Troubleshooting Guide 14) Troubleshooting CH54 Display Title Cause of error Check point & Normal condition code • 3-phase wrong wiring of • Abnormal Main PCB 3-phase wrong wiring outdoor unit (Reverse • No connection of CN_Phase of main outdoor unit Phase /omission of •...
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Troubleshooting Guide 15) Troubleshooting CH61, CH62 Display Title Cause of error Check point & Normal condition code • Condenser pipe sensor • Check the load condition. Condenser pipe sensor detected high • Check the sensor of Condenser pipe sensor. temp. high temp.(65°C) Heat sink sensor •...
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Troubleshooting Guide 16) Troubleshooting CH67, CH105 Display Title Cause of error Check point & Normal condition code Outdoor fan • Check the fan condition. • Outdoor fan is not oper- lock • Check the fan connector ating • Communication error Communication error •...
(3-way) Valve (3-way) Valve 3-way Valve (Liguid Side) 3-way Valve (Gas Side) Valve cap Valve cap Open position Open position Closed position Closed position To piping To piping Service Service connection Service Service connection port cap port port cap port To outdoor unit To outdoor unit Service port...
(3-way) Valve (1) Pumping down Liquid side Indoor unit Outdoor unit Close 2-Way valve Gas side Open 3-Way valve Liquid side Indoor unit Close 2-Way valve Gas side Open 3-Way valve manifold gauge Low- handle Hi- handle (CLOSE) (CLOSE) Procedure •...
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(3-way) Valve (2) Evacuation (All amount of refrigerant leaked) Liquid side Indoor unit Outdoor unit Open 2-Way valve Gas side Open 3-Way valve Liquid side Indoor unit Open 2-Way valve Gas side Open 3-Way valve manifold gauge Vacuum pump Low- handle Hi- handle (OPEN)
(3-way) Valve (3) Gas Charging (After Evacuation) Liquid side Indoor unit Outdoor unit Open 2-Way valve Gas side Open 3-Way valve Liquid side Indoor unit Open 2-Way valve Gas side Open 3-Way valve manifold gauge Charging cylinder Low-handle (OPEN) Hi- handle Check valve (OPEN) •...