Self Diagnosis Function - Mitsubishi SRK50HE-S1 User Manual

Self diagnosis function

I
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
Description of trouble
Heat exchanger sensor error
1 time flash
Room temperature sensor error
2 time flash
6 time flash
Indoor fan motor error
TIMER light
Outdoor temperature sensor error
1 time flash
Outdoor heat exchanger fluid pipe
2 time flash
sensor error
4 time flash Discharge pipe sensor error
Over heat of compressor
5 time flash
6 time flash Error of signal transmission
– 20 –
Cause
• Broken heat exchanger sensor wire, poor connector
connection
• Broken room temperature sensor wire, poor connector connection
• Defective fan motor, poor connector connection
• Broken outdoor sensor wire, poor connector connection
• Broken heat exchanger fluid pipe sensor wire, poor connector
connection
• Broken discharge pipe sensor wire, poor connector connection.
• Gas shortage, defective discharge pipe sensor, closed control
valve
• Defective power supply, Broken signal wire, defective in/outdoor
unit boards