Self Diagnosis Function - Mitsubishi SRK63ZR-W User Manual

Self diagnosis function

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We are constantly trying to do better service to our customers by installing such judges that show abnormality of each function as follows
TIMER light ON
RUN light keeps flashing
RUN light ON
RUN light 2-time flash
RUN light 7-time flash
RUN light
Description of trouble
Indoor heat exchanger sensor 1
1-time flash
error
Room temperature sensor error
2-time flash
Indoor heat exchanger sensor 3
3-time flash
error
5-time flash Circuit error
6-time flash Indoor fan motor error
Refrigerant is insufficient
7-time flash
Closed service valve
TIMER light
Outdoor temperature sensor error
1-time flash
Outdoor heat exchanger sensor
2-time flash
error
Discharge pipe sensor error
4-time flash
5-time flash Suction pipe sensor error
Current cut
1-time flash
Trouble of outdoor unit
2-time flash
Over current
3-time flash
Power transistor error
4-time flash
Over heat of compressor
5-time flash
Error of signal transmission
6-time flash
7-time flash
Outdoor fan motor error
Keep flashing
Cooling high pressure protection
Rotor lock
2-time flash
Closed service valve
1-time flash
EN-32
Cause
• 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
• 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
• 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
• Defective compressor
• Open phase on compressor
• Defective outdoor unit boards
• Closed service valve