Table of Contents
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Control Device
• Electrical Controls
Fault
Description of
Codes
Inspection
Indoor Air
CH 01
Thermistor Error
Indoor Coil
CH 02
Thermistor Error
Themostat
CH 07
Wiring Error
EEPROM Check
CH 09
Sum Error
CH 10 Indoor Fan Error
High Pressure
CH 34
Switch Error
Outdoor Air
CH 44
Thermistor Error
(PTHP Only)
Outdoor Coil
CH 45
Thermistor Error
(PTHP Only)
Outdoor Fan
CH 67
Error
Function
Over heating Protection
Freeze Protection
Remote Mode
49
C
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The Indoor Air Thermistor Error occurs when
the indoor temperature is ≤-35°C or ≥100°C.
The Indoor Coil Thermistor Error occurs when
the indoor pipe temperature is ≤-35°C or
≥100°C.
The Thermostat Wiring Error has occurred if the
PTAC receives control commands that cannot be
driven from the Thermostat.
The EEPROM Check Sum Errors occurs
when the original check sum and calculated
check sum do not match.
The Indoor Fan Error occurs when there is not
feedback signal from Hall sensor located in
BLDC Motor in 50 seconds delay time or
feedback signal lower than 50RPM (applied in
models using the BLDC Motor).
The High Pressure Switch Error occurs when the
high pressure switch opens for 65 milliseconds
more than 10 times in 1 hour.
The Outdoor Air Thermistor Error occurs when
the outdoor air temperature is ≤ -35°C or
≥100°C.
The Outdoor Air Thermistor Error occurs when
the outdoor air temperature is ≤-35°C or
≥100°C.
The Outdoor Fan Error occurs when there is
no feedback signal from the Hall sensor
located in BLDC Motor in 50 seconds delay
time or feedback signal lower than 50RPM
(applied in models using the BLDC Motor).
Description
This feature prevents the unit from overheating in heat
mode during remote thermostat operation
This feature prevents the room from freezing due to
low temperatures
This code indicates that dip switches have been set
for remote wall-mounted thermostat mode.
r r
r o
• Check the error after change sensor.
• Check the insertion of PCB Connector
Wafer.
• Check the error after change sensor.
• Check the insertion of PCB Connector
Wafer.
• Check the connection with Themostat
comparing with manual.
• Check the insertion of EEPROM.
• Unplug and plug the power code
• Check the insertion of BLDC Connector.
• Check whether the output voltage between the
two terminals 4-5pins in CN-MOTOR-ODF is 15V.
• Check whether the output voltage between
the two terminals 4-6pins is over 2V.
• Check whether the output voltage between
the two terminals 4-7pins is exist or not.
• Check the existence of short key between
CN-PRESS.
• Check the insertion of PCB Connector Wafer.
• Check the error after change sensor.
• Check the insertion of PCB Connector
Wafer.
• Check the error after change sensor.
• Check the insertion of PCB Connector
Wafer.
• Check the insertion of BLDC Connector.
• Check whether the output voltage between the two
terminals 4-5pins in CN-MOTOR-ODF is 15V.
• Check whether the output voltage between
the two terminals 4-6pins is over 2V.
• Check whether the output voltage between
the two terminals 4-7pins is exist or not.
PTAC
6RWU0-05B
C
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P
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t n i
Display code
OP
°F
FP
°F
°F
Product Data
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