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Trouble shooting 2
INDOOR UNIT Error Method:
Power Frequency Abnormal
Detective Actuators:
Indoor Unit Controller PCB Circuit
Forecast of Cause : 1. Outside cause 2. Installation failure 3. Defective connection of electric components
4. Controller PCB defective
Check Point 1-1 : Reset Power Supply
Does abnormal LED indication show again?
YES
Check Point 2 : Check Installation condition
p Check Cable/Breaker
p Check loose or removed connection
>> If Installation defect is found, correct it by referring
to Installation Manual.
OK
Check Point 3 : Check connection of electric components
p Check power supply voltage (AC220V between Indoor
unit terminal 1 and 2)
p Check connection of Connector (any lose connector or
incorrect wiring)
p Check any shortage or corrosion on PCB.
OK
Check Point 4 : Replace Controller PCB
Change Controller PCB and set up the original address.
Indicate or Display:
Indoor Unit : Operation LED Flash, Timer LED Flash
Outdoor Unit : LED1 Flash, LED6
ERROR CODE : E : 04
Detective details:
When 5 continuous failures occurred at Power frequency test.
Or, 2 times match under 45Hz or 2 times match over 66Hz.
NO
Check Point 1-2 :
Check outside cause (Voltage drop or noise, etc.)
Instant drop ----- Check if there is a large load electric apparatus
Momentary power failure ----- Check if there is a defective
Noise ----- Check if there is any equipment causing harmonic
AC
06-10
Swing LED Flash
1Time Blink
in the same circuit.
contact or leak current in the
power supply circuit.
wave near electric line (Neon bulb or electric
equipment that may cause harmonic wave).
Check the complete insulation of grounding.
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Troubleshooting
