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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 wire, poor connector
connection
Active filter voltage error
Heat exchanger sensor 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
TIMER light ON
RUN light keeps flashing
RUN light 2 time flash
RUN light ON
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
• Defective fan motor, poor connector connection
Indoor fan motor error
6-time flash
7-time flash
Cooling high pressure protection • Gas over charge, short circuit of outdoor unit
Keep flashing
Outdoor heat exchanger fluid
pipe sensor error
RLC012A002A_EN_001-022 4/8/14, 11:0122