Trouble Shooting; Trouble Criterion Of Main Parts - Mitsubishi Electric MR-CU375S-W-A Service Manual

6

TROUBLE SHOOTING

6.1 TROUBLE CRITERION OF MAIN PARTS

MR-CU375S/SL-A
MR-CU375S/SL-A(NZ)
Components
/ Part Name
Compressor
Rated input
Starting current
Running current
Auxilialy
wiring
Measure the resistance with a tester.
(Ambient temperature:Room temperature 15
Run capacitor
Motor
protector
PTC Relay
5
6
3
As PTC Relay has been heated while refrigerator is running be sure
to measure the resistance after the thermistor has got cool enough.
Check Method and Criterion
Model ESS60C11RAW (220-240V 50Hz)
W
A
A
Main wiring
Auxilliary wiring
Main
wiring
Therminal check point
1
2
Model
3
Measure the resistance with a tester.
2
(Ambient temperature:Room temperature 15
6
5
33 Ω (Approx.)
116/118 (220/240V 50Hz)
8.49/9.31 (220/240V 50Hz)
0.57/0.55 (220/240V 50Hz)
Normal
17.9 Ω (Approx.)
15.1 Ω (Approx.)
o o
C ~ 25 C)
Rated input
Measure the resistance with a tester
Normal
4 µF
3
Model 5TM222NHBYY-53
Open
Connected
Point
Close
Measure the resistance with a tester.(Ambient
temperature:Room temperature 15
Normal
Less than 1Ω
PTH7M330MD2
Normal
Opened (∞ Ω ) or Short (0Ω)
- 8 -
Abnormal
(faulty)
Opened
(∞ Ω )
or
Short (0Ω)
400VAC
Abnormal(faulty)
Short (0Ω )
o
120 + 5 C
o
69 + 9 C
o o
C ~ 25 C)
Abnormal(faulty)
Opened (∞ Ω )
o
C ~ 25
Abnormal(faulty)
Parts
Mounted
Position
Compressor in
the machine
chamber at the
rear side of
the frame
In the control
panel of the
rear side at
compressor
room
Compressor in
the machine
chamber at the
rear side of
the frame
Compressor in
the machine
chamber at the
o
C)
rear side of
the frame