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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
RUN light
TIMER light
TIMER light ON
1-time flash
2-time flash
3-time flash
5-time flash
6-time flash
7-time flash
5-time flash
4-time flash
2-time flash
1-time flash
3-time flash
2-time flash
1-time flash
4-time flash
5-time flash
6-time flash
7-time flash
Keep flashing
2-time flash
1-time flash
RUN light keeps flashing
RUN light ON
RUN light 2-time flash
RUN light 7-time flash
Description of trouble Cause
Indoor heat exchanger sensor 1
error
Room temperature sensor error
Indoor fan motor error
Indoor heat exchanger sensor 3
error
Circuit error
Refrigerant is insufficient
Closed service valve
• Broken heat exchanger sensor 1 wire, poor connector
connection
• Broken room temperature sensor wire, poor connector
connection
• Broken heat exchanger sensor 3 wire, poor connector
connection
• Circuit failure or poor connector connection
• Defective fan motor, poor connector connection
• Refrigerant is insufficient, leaking
• Closed service valve
Outdoor temperature sensor error
Outdoor heat exchanger sensor
error
Discharge pipe sensor error
Suction pipe sensor error
• Broken outdoor sensor wire, poor connector connection
• Broken heat exchanger sensor wire, poor connector
connection
•
Broken discharge pipe sensor wire, poor connector connection
• Broken suction pipe sensor wire, poor connector connection
Current cut
Trouble of outdoor unit
Over current
Power transistor error
Over heat of compressor
Error of signal transmission
Outdoor fan motor error
Cooling high pressure protection
• Compressor locking, open phase on compressor output,
short circuit on power transistor, closed service valve
• Broken compressor wire
• Compressor blockage
• Overload operation, overcharge of refrigerant
• Broken power transistor
• Gas shortage, defective discharge pipe sensor,
closed service valve
• Defective power source, broken signal wire, defective
indoor/outdoor unit boards
• Defective fan motor, poor connector connection
• Overcharge of refrigerant, short circuit of outdoor unit
Rotor lock
• Defective compressor
• Open phase on compressor
• Defective outdoor unit boards
Closed service valve
• Closed service valve
RLF012A104_EN.indd 33RLF012A104_EN.indd 33 1/13/2017 6:35:46 PM1/13/2017 6:35:46 PM
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