Inspection Procedures Corresponding To Detail Of Trouble - Mitsubishi Heavy Industries SRF25ZS-W Service Manual

(7) Inspection procedures corresponding to detail of trouble

Sensor error
Discharge pipe temperature sensor characteristics
180
160
140
120
100
80
60
40
20
(Short-circuit)
0
0 20
Indoor fan motor error
unit
Power source reset
Is it normalized?
Malfunction by temporary noise
40 60 80 100 120
Temperature (˚C)
unit
Replace fan motor. (If the
error persists after replacing
the fan motor, replace the
indoor unit PCB.)
Temperature sensor characteristics (Room
temperature, indoor heat exchanger
temperature, outdoor heat exchanger
temperature, outdoor air temperature)
30
25
20
15
10
(Short-circuit)
135
.
pro
29
- -
'09•SRK-DB-087D
'20 • SRF-SM-311
Broken sensor wire,
connector poor connection
5
- 10
0 10 20 30 40
Temperature (˚C)
Defective fan motor, connector poor
connection, defective indoor unit PCB
.
34 for the fan motor and indoor unit PCB check
50 60 70
unit