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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
Description of trouble
Cause
1-time flash
Indoor heat exchanger sensor 1
error
• Broken heat exchanger sensor 1 wire, poor connector
connection
Room temperature sensor error
2-time flash
• Broken room temperature sensor wire, poor connector
connection
3-time flash
Indoor heat exchanger sensor 3
error
• Broken heat exchanger sensor 3 wire, poor connector
connection
4-time flash
Trouble of Wireless LAN interface
TIMER light ON
• Defective Wireless LAN interface boards, poor connector
connection
5-time flash
Circuit error
• Circuit failure or poor connector connection
Indoor fan motor error
• Defective fan motor, poor connector connection
6-time flash
7-time flash
- Refrigerant is insufficient, leaking
- Closed service valve
Refrigerant is insufficient
Closed service valve
TIMER light
• Broken outdoor sensor wire, poor connector connection
Outdoor temperature sensor error
1-time flash
2-time flash
Outdoor heat exchanger sensor
error
• Broken heat exchanger sensor wire, poor connector
connection
RUN light keeps flashing
Discharge pipe sensor error
• Broken discharge pipe sensor wire, poor connector connection
4-time flash
• Broken suction pipe sensor wire, poor connector connection
5-time flash
Suction pipe sensor error
Current cut
1-time flash
• Compressor locking, open phase on compressor output,
short circuit on power transistor, closed service valve
Trouble of outdoor unit
2-time flash
- Broken compressor wire
- Compressor blockage
Over current
• Overload operation, overcharge of refrigerant
3-time flash
• Broken power transistor
Power transistor error
4-time flash
RUN light ON
Over heat of compressor
5-time flash
• Gas shortage, defective discharge pipe sensor,
closed service valve
Error of signal transmission
6-time flash
• Defective power source, broken signal wire, defective
indoor/outdoor unit boards
7-time flash
Outdoor fan motor error
• Defective fan motor, poor connector connection
Keep flashing
Cooling high pressure protection
• Overcharge of refrigerant, short circuit of outdoor unit
2-time flash
RUN light 2-time flash
Rotor lock
• Defective compressor
• Open phase on compressor
• Defective outdoor unit boards
1-time flash
Closed service valve
• Closed service valve
RUN light 7-time flash
EN-34