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Self diagnosis function
■ We are constantly trying to do better service to our customers by installing such judges that show abnormality of each function as follows:
Outdoor temperature sensor error • Broken outdoor sensor wire, poor connector connection
Description of trouble
Room temperature sensor error
Cause
• Broken heat exchanger sensor 1 wire, poor connector
connection
connection
Active filter voltage error
Heat exchanger sensor 1 error
• Broken heat exchanger sensor 3 wire, poor connector
Heat exchanger sensor 3 error
• Broken room temperature sensor wire, poor connector connection
• Defective power supply
• Broken heat exchanger fluid pipe sensor wire, poor connector
connection
Discharge pipe sensor error
• Broken discharge pipe sensor wire, poor connector connection.
Rotor lock
• Defective compressor
• Open phase on compressor
• Defective outdoor unit boards
• Gas shortage, defective discharge pipe sensor, closed service
valve
• Broken power transistor, broken compressor wire
• Broken discharge pipe sensor wire, poor connector connection
• Compressor blockage
• Compressor locking, open phase on compressor output,
shortcircuit on power transistor, closed service valve
• Defective power supply, Broken signal wire, defective in/outdoor
unit boards
Power transistor error
• Broken power transistor
Current cut
Trouble of outdoor unit
Over current
• Overload operation, overcharge
Over heat of compressor
Error of signal transmission
Outdoor fan motor error • Defective fan motor, poor connector connection
Cooling high pressure protection • Gas over charge, short circuit of outdoor unit
TIMER light ON
RUN light keeps flashing
RUN light ON
RUN light 2 time flash
2 time flash
5 time flash
1 time flash
RUN light
2 time flash
1 time flash
TIMER light
4 time flash
2 time flash
4 time flash
1 time flash
2 time flash
3 time flash
5 time flash
6 time flash
Keep flashing
Suction pipe sensor error • Broken suction pipe sensor wire, poor connector connection
5 time flash
3 time flash
Refrigerant is insufficient
Closed service valve
Heat exchanger sensor 1 error
• Defective fan motor, poor connector connection
• Refrigerant is insufficient, leaking
Closed serice valve
Broken heat exchanger sensor 1 wire, poor connector connection
•
•
Indoor fan motor error
7 time flash
6 time flash
7 time flash
Outdoor heat exchanger fluid pipe
sensor error
RLA012A013_EN_001-022 08/04/2009, 10:4622
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