MITSUBISHI ELECTRIC Mitsubishi Home Refrigerator MR-G50J-SS-NZ - Manual (Page 20)

20
Poor cooling
Not cooling at all(In case any error codes doesn’t appear as shown in page 21,22 even though mode switch is pressed for 5 seconds)
Freezer compartment
[2]
Check connector contact.
Exchange the unit
Replace the lead wire
assembly (Lead wire of
compressor)
Abnormal
Normal
No
Yes
Set the temperature to “High”.
No
Proceed to “The refrigerator fan motor does not work.”
No
Replace the motor damper (for freezer com-
partment ).
ww Replace the fan grille as well as the motor
damper since they are combined together.
Yes
No
continuity
Abnormal
Normal
Yes
Normal
The baffles
do not
function.
Replace freezer compartment thermistor
1 Is the set temperature of freezer compartment set to “High”?
2 Does cool air come out of air outlet?
3
Does AC 230V run between 1 and 3 , termi-
nals of CN1 on filter board?
4
Defective thermistor
Dip freezer compartment thermistor into ice water (0 : ), and
measure the resistance between terminal 3 (white) and 6
(white) by detaching 6-pin connector at the left-back bottom of
vegetable compartment.
• Resistance at 0 : :approx. 6~7k " .
Check freezer compartment thermistor.
When compressor
operates, LCD indi-
cates
e41 as a
result of self-check.
Normal
Control board
CN7S
CN4D
M
6-pin connector
Freezer
compartment
thermistor
Motor damper
(for freezer
compartment)
6
5
4
3
2
1
6
5
4
3
2
1
4
4
5
6
3 4
5
6
3
4
4
4
Does AC 230V run between 3 and 5 , termi-
nals of CN2 on filter board?
Yes
Detach each connector CN2A on
control board check the continuity
between terminals
5 and 7
respectively.
(Check if there is a short or open
circuit in the motor protector.)
Detach connector CN50G on con-
trol board and check the resis-
tance respectively between termi-
nals of
1 , 3 and 5 :approx.9.3 "
Check the error display of self-
check after turning on and off the
power supply.
w With all the connectors connected.
Inverter-related parts may be
defective. Conduct ice making
test operation. (see page 21 for
error codes.)
Continuity detected
Continuity detected
No
Inspect power-supply wiring such as power cord and
breaker etc.
Replace the filter board.
Motor protector (open circuit)
w By measuring the resistance,
ensure that the circuit is open.
Disconnect 6-pin connector in
machine chamber to check resis-
tance between terminals of
1 , 2
and 3 : approx.9.3 "
Measure the resistance of com-
pressor’s winding between termi-
nals of black, white, and red :
approx.9.3
"
Abnormal
Filter board
Control board
Noise filter
CN1 CN2
CN2A CN50G
Compressor
M Motor
protector
6-pin connector in machine chamber
1
33 1 1
3 1
3
135
135
57
57
1
2
3
4
5
1
2
3
4
5
M
Compressor does not operate
[3]
Exchange
the unit
Yes
Is refrigerator in the demonstration mode? Release the demonstration mode. (See page 10.)
No
continuity
Operate the ice-making test at the place where the operation of
dampers (Refrigerator compartment and slide compartment ther-
mistor) is visible. Does the baffle open / close? (Wait 1 minute for
self-check).
(See “Serf-check and error display method and operation,
1 Ice
making test operation” at page 14.)
No
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