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