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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
•
• Defective power supply
•
Discharge pipe sensor error
• Broken discharge pipe sensor wire, poor connector connection.
Rotor lock
• Defective compressor
• Open phase on compressor
• Defective outdoor unit boards
•
• Broken power transistor, broken compressor wire
• Broken discharge pipe sensor wire, poor connector connection
• Compressor blockage
•
•
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
•
•
•
Indoor fan motor error
7-time flash
6-time flash
Closed service valve
• Closed serice valve
RUN light 7-time flash
1-time flash
7-time flash
Outdoor heat exchanger fluid pipe
sensor error
Defective power supply, Broken signal wire, defective
in/outdoor unit boards
Gas shortage, defective discharge pipe sensor,
closed service valve
Compressor locking, open phase on compressor
output, shortcircuit on power transistor, closed service
valve
Broken heat exchanger fluid pipe sensor wire, poor
connector connection
Broken room temperature sensor wire, poor connector
connection
Refrigerant is insufficient, leaking
Closed serice valve
Broken heat exchanger sensor 1 wire, poor connector
connection
RFB012A006C_EN_001-032_0409 4/9/14, 9:4131