Inspection Procedures Corresponding To Detail Of Trouble - Mitsubishi Heavy Industries SCM50ZS-S1 Technical Manual

(7) Inspection procedures corresponding to detail of trouble

Sensor error
Discharge pipe and power transistor sensor
temperature characteristics
180
160
140
120
100
80
60
40
20
0
0 20
Indoor fan motor error
Power source reset
Is it normalized?
Malfunction by temporary noise
40 60 80 100 120
Temperature (˚C)
Replace fan motor. (If the
error persists after replacing
the fan motor, replace the
indoor PCB.)
205
-
Sensor temperature characteristics Room
temp., indoor heat exchanger temp., out-
door heat exchanger temp., outdoor air
temp. outdoor suction pipe temp.
30
25
20
15
10
5
- 10
135
211 for the fan motor and indoor PCB check proc-
-
'18 • SCM-T-251
Broken sensor wire,
connector poor connection
0 10 20 30 40 50
Temperature (˚C)
Defective fan motor, connector poor
connection, defective indoor PCB
60 70