MITSUBISHI ELECTRIC Mitsubishi Home Refrigerator MR-G50J-SS-NZ - Manual (Page 16)

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*1 : The setting of ice making compartment will be displayed and blinks during or after ice making test operation.
*2 : This operation is called the recovery operation:
If the damper has not operated ever once during the compressor operation, make the damper operate when the compressor stops.
*3 : When the resistance is ∞ ' , the circuit is deemed open-circuitted.
When the resistance is 0 ' , the circuit is deemed short-circuitted.
*4 : Once e01 is detected, other errors would be ignored and not displayed on the panel.
*5 : Characteristic value may change in order to improve the product.
*6 : The error codes
e50 to e55 are not displayed even if those abnormalities occur at power input.
Therefore, be sure to perform ice making test operation in order to check if any abnormality indicated by these error codes occurs. (See page 14.)
*7 : If those errors still continue for 1minute after the restart, e56 will be displayed again.
Display Error code Trouble
Detecting method
(*3)
Check point Treatment
e 33
Trouble of ice
maker gear box When the gear box operation
is not finished in 30 seconds. 1. Connector CN8K on control board,
Ice gear box 6-pin relay connector, 8-pin relay connec-
tor
2. Ice gear box frozen point Replace
3. Check the trouble of the ice gear box with the
ice making test operation.
Replace
Control
100 minutes later, the gear box is
reactivated to be checked again.
e 34
(T0: Defrost thermistor tem-
perature at power input, T1:
Defrost thermistor tempera-
ture when 15 minutes have
passed from the power input)
•When the difference
between T0 and T1 is
T0 [ T1. (*5)
When cooling operation returns to
normal condition, the display of
error code disappears.
e 50
Trouble of invert-
er circuit •When there is any trouble in
the circuit which detects cur-
rent of compressor.
e 51
Trouble of bus-
bar voltage •When the range of bus-bar
voltage is not approx. DC
260-390V.
e 53
Trouble of startup
, synchronization
or overcurrent
detection •When there is no current at
compressor startup.
•When phase current exceeds
5.5A at compressor startup.
•When phase current exceeds
3.3A during compressor oper-
ation.
•When current of 5.3A or more
runs into the bus-bar of
control board.
e 54
Trouble of power
supply voltage When bus-bar voltage (full
wave voltage) is DC 390V or
above in power input. 1. Different voltage of power supply outlet
2. Trouble of relay in the circuit on the control board
Refrigerator compartment room
light OFF
Heaters. OFF
e 55
Trouble of con-
trol board
(EEPROM
related trouble)
EEPROM (IC11M)
accumulates data necessary
for control.
•When the data are not input
accurately.
•When microcomputer cannot
read the data.
Refer to “Compressor does not operate” at page 21.
e 41
Trouble of elec-
tromagnetic
three-way valve When defrost thermistor reads
-10 : or above in five minutes
after the compressor’s
startup.(*5)
Connector CN9D on control board
5-pin connector in machine chamber Check the operation of electro-
magnetic three-way valve and
then open the valve.
Check the compressor and the pipe.
1. Connector CN4D on control board,
Refrigerator fan motor 6-pin relay connector
2. Check refrigerator fan motor operation. Replace
e 31
Trouble of refrig-
erator fan motor •When motor doesn’t
rotate even though
power is on.
•When the waveform,
which indicates the rota-
tion times of motor, can-
not be detected.
• 3 minutes later, the refrigerator
fan motor is reactivated to be
checked.
•Until the fan motor gets to oper-
ate correctly, the buzzer sounds
every time the door is closed.
1. Connector CN4D on control board,
4-pin connector, 4-pin relay connector
2. Check machine chamber fan motor operation. Replace
e 32
Trouble of
machine cham-
ber fan motor •When motor doesn’t
rotate even though
power is on.
•When the waveform,
which indicates the rota-
tion times of motor, can-
not be detected.
•3 minutes later, the machine
chamber fan motor is reactivated
to be checked.
•Until the fan motor gets to oper-
ate correctly, the buzzer sounds
every time the door is closed.
(*6)
(*6)
(*6)
Self-check
LCD
(*6)
e 52
Trouble of inverter
software reset
function •When the inverter driving
software malfunctions.
e 56
Defective wiring
continuity or
trouble of control
board The errors 50 to 53 keep
occurring over one and a half
hour.
(the situation, which com-
pressor cannot be operated,
continues.)
Overcurrent detection error
occurred before the
compressor is activated.
Refer to “Compressor does not operate” at page.22.
•Error display starts after it is
regarded as e56 .
•Error display continues until
defrosting starts or cooling oper
ation gets back to normal. (Error
display doesn’t disappear by
unplugging and plugging the
power cord.*7)
•Try to restart compressor every 3
minutes.
(*6)
Repair the
contact failure.
Repair the
contact failure.
Repair the
contact failure.
Repair the
contact failure.
Clogging of
refrigerant
pipe or trouble
related to
compressor
Replace
the control
board.
Replace
the control
board.
The compressor is suspend-
ed and reactivated 10 min-
utes later.
When abnormality occurs in
power input, the compressor
is suspended for 10 minutes.
When abnormality occurs in
normal operation, the com-
pressor keeps operating.
Replace the
operation
P.C. board.
e 18
Trouble of out-
side air ther-
mistor Compressor is activated at
“Speed-level 2.”
1. Connector CN2A on control board
Defrost heater plug and receptacle, 1-pin
relay connector
Thermal fuse 4-pin, 8-pin relay connector
2. Check the resistance of defrost heater.
3. Check the continuity of thermal fuse.
Replace
Replace
e 30
Trouble of
defrost heater
(*6) When defrosting is not
finished in 2 hours. The defrost heater is
stopped and if the next
defrosting finishes in 2
hours, the error code will
disappear .
1. Connector CN7S on control board, 6-pin,
9-pin relay connector
e 17
Trouble of ice
making com-
partment
thermistor
2. Check the resistance of thermistor. Replace
•When ice making compart-
ment is used as “refrigera-
tor”, synchronize I-damper
with R-damper.
•When ice making compart-
ment is used as “ice mak-
ing”, synchronize I-damper
with F-damper.
Repair the
contact failure.
Repair the
contact failure.
When there is a short or
open circuit in the ice
making compartment
thermistor.
When there is a short or
open circuit in the out-
side air thermistor.
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