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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 fl ash
2-time fl ash
3-time fl ash
5-time fl ash
6-time fl ash
7-time fl ash
5-time fl ash
4-time fl ash
2-time fl ash
1-time fl ash
3-time fl ash
2-time fl ash
1-time fl ash
4-time fl ash
5-time fl ash
6-time fl ash
7-time fl ash
Keep fl ashing
2-time fl ash
1-time fl ash
RUN light keeps fl ashing
RUN light ON
RUN light 2-time fl ash
RUN light 7-time fl ash
Description of trouble Cause
Heat exchanger sensor 1 error
Room temperature sensor error
Indoor fan motor error
Heat exchanger sensor 3 error
Circuit error
Refrigerant is insuffi cient
Closed service valve
Heat exchanger sensor 1 error
• 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 insuffi cient, leaking
• Closed serice valve
• Broken heat exchanger sensor 1 wire, poor connector
connection
Outdoor temperature sensor error
Outdoor heat exchanger fl uid pipe
sensor error
Discharge pipe sensor error
Suction pipe sensor error
• Broken outdoor sensor wire, poor connector connection
• Broken heat exchanger fl uid pipe 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 power transistor, broken compressor wire
•
Broken discharge pipe sensor wire, poor connector connection
• Compressor blockage
• Overload operation, overcharge of refrigeration
• Broken power transistor
• Gas shortage, defective discharge pipe sensor,
closed service valve
• Defective power source, broken signal wire, defective
in/outdoor unit boards
• Defective fan motor, poor connector connection
• Overcharge of refrigeration, short circuit of outdoor unit
Rotor lock
• Defective compressor
• Open phase on compressor
• Defective outdoor unit boards
Closed service valve
• Closed service valve
RLD012A002G_EN.indd 31RLD012A002G_EN.indd 31 2015/02/27 14:36:452015/02/27 14:36:45