Mitsubishi Heavy Industries SRRM40HENG-L, Handbook, Page: 88 / 1106

86
SRK-H
(2) Indication of Self Diagnosis (Indoor unit)
(3) Troubleshooting
Abnormality of outdoor unit [Compressor malfunction of insufficient gas (refrigerant)]
TIMER lamp
is lights
continuously.
RUN lamp is flashing.
(1 Time flash.)
RUN lamp is flashing.
(2 Time flash.)
RUN lamp is flashing.
(6 Time flash.)
TIMER lamp is flashing.
(5 Time flash.)
Connect of Defect
Abnormality of heat
exchanger thermistor.
Abnormality of room
temperature thermistor.
Abnormality of indoor
fan motor.
Abnormality of outdoor
unit.
Place of defect
¡
Disconnection of heat exchanger thermistor.
¡
Disconnection of room temperature
thermistor.
¡
Fan motor is defective.
¡
Printed circuit board is defective.
¡
Compressor is defective.
¡
Capacitor is defective.
¡
Gas is short.
RUN lamp is
lights
continuously.
Abnormality of indoor fan motor (Fan motor defective, printed circuit board defective)
Yes
Yes
Yes
Yes
No
Yes
No
No
No
No
No
Yes
Yes
The fan motor is defective.
Is the connector connection
good?
Repair the connector.
Is voltage being applied to the
fan motor? The indoor circuit board
is defective.
Replace protective device.
Replace capacitor.
Is capacitor normal?
Insufficient gas.
Replace compressor.
Is protective device normal? Does compressor operate?
Clogging of capillary tube. etc.
Is abnormality the same after
gas charging?
Is refrigerant circulation
volume normal?