Trouble Shooting; Trouble Criterion Of Main Parts - Mitsubishi Electric MR-385S-W-A Service Manual

6 TROUBLE SHOOTING

6.1 TROUBLE CRITERION OF MAIN PARTS

MR-385S-A MR-385SL-A
MR-385S-A(NZ) MR-385SL-A(NZ) MR-420S-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
MR-420S-A
MR-385S/SL
Model
DG57C96RAW5
W 106/108(220/240V 50Hz)
A 7.38/8.01(220/240V 50Hz)
A 0.57/0.55(220/240V 50Hz)
Main wiring
Auxilliary wiring
Main
wiring
Model
5TM181NHBYY
Open
Connected
Point
Close
Measure the resistance with a tester.(Ambient temperature:Room temperature 15
2
Model
3
Measure the resistance with a tester.
2
(Ambient temperature:Room temperature 15
6
5
As PTC Relay has been heated while refrigerator is running be sure
to measure the resistance after the thermistor has got cool enough.
MR-455S-A
MR-455S-A(NZ)
Check Method and Criterion
DG66C11RAW5
117/118(220/240V 50Hz)
8.05/8.83(220/240V 50Hz)
0.71/0.66(220/240V 50Hz)
Normal
MR-385S/SL
18.2 Ω (Approx.)
17.7 Ω (Approx.)
o o
C ~ 25 C)
Rated input
Measure the resistance with a tester.
Normal
Opened (
∞ Ω )
MR-385S/SL
o
120 + 5 C
o
69 + 9 C
Normal
Less than 1Ω
PTH7M330MD2
Normal
33 Ω (Approx.)
- 14 -
MR-420S,455S
Abnormal
MR-420S,455S
15.4 Ω (Approx.)
Opened(∞ Ω )
Short (0Ω)
17.7 Ω (Approx.)
400VAC
Abnormal(faulty)
Short ( 0Ω )
MR-420S,455S
5TM205NHBYY
o
120 + 5 C
o
69 + 9 C
o
C ~ 25
Abnormal(faulty)
Opened (∞ Ω )
o o
C ~ 25 C)
Abnormal(faulty)
Opened (∞ Ω ) or Short (0Ω)
Parts Mounted
Position
Compressor in
the machine
chamber at the
rear side of
the frame
(faulty)
or
In the control
panel of the
refrigerator
compartment
Compressor in
the machine
chamber at the
rear side of
the frame
o
C)
Compressor in
the machine
chamber at the
rear side of
the frame