Mitsubishi Electric MR-G50J-SS-NZ, Руководство по обслуживанию

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(3) Error display and trouble locating
1. Display details
After conducting the self-check by referring to 6-2(1), error codes are displayed in the tempera-
ture display section. ”
e e ” and two digit error code flashes alternately as shown in the right figure.
When several errors occur, they are displayed alternately. However, the error whose code has
a smaller number has priority to be displayed first.
(Ex.) In case the errors of ice tray thermistor ( e e110 0 ), refrigerator thermistor ( e e113 3 ) and refrigerator
fan motor (
e e3 311
) are happening simultaneously;
✻
For 2 minutes in self-check, a high-tone sound is heard due to the operation check of damper.
2. Check point and treatment
(Ex.) When ice maker gear
box is defective.
Display Error code
Self-check
LCD
Trouble
Detecting method
(*3)
Check point Treatment
e
(*5)
Communication
error of
operation panel
When the following communi-
cation errors occur
between control board and
operation P.C. board:
•They transmit and receive
data that has nothing to do
with settings.
•They cannot transmit and
receive data each other
for about two seconds.
1. Connector CN8K, CN7S on control board
4-pin relay connector (hinge)
4-pin connector on operation P.C. board
2. Trouble of control board and operation
P.C. board
Replace
Control
Keep the same operation as
the one before the communi-
cation error has occurred.
e 03
Trouble of
model judge-
ment
1. Check the model name of control board
2. Check the operation p.c. board.
Replace
Replace
Keep operating the unit, and
conduct error code indication
only.
e 10
Trouble of ice
making tray
thermistor
When the model of con-
trol board is different from
the one of operation P.C.
board.
1. Connector CN7S on control board, Ice gear
box 6-pin relay connector, 8-pin relay
connector
2. Check the resistance of thermistor.
Replace
When the compartment door
has been closed for 3 hours
and when freezer compartment
thermistor is -10
: or less, ice-
detecting operation starts.
e
11
Trouble of
freezer com-
partment
thermistor
After 10 minutes off, the
compressor repeats 30-
minute ON and 20-minute
OFF.
Testing
(*1)
Ice maker is under testing
e
Communication
error of inverter
When abnormality is found in
the communication between
refrigerator control circuit and
inverter control circuit in con-
trol board. (When they do not
transmit and receive data for
10 seconds.)
Compressor OFF.
e 12
Trouble of
defrost
thermistor 1. Connector CN7S on control board. 2-pin
relay connector
2. Check the resistance of thermistor.
Replace
The defrost heater won’t be
turned ON.
1. Connector CN7S on control board. 6-pin
relay connector
2. Check the resistance of thermistor. Replace
e
13
Trouble of
refrigerator
thermistor
1. Connector CN7S on control board, 4-pin
relay connector
2. Check the resistance of thermistor.
1. Connector CN7S, on control board, 6-pin
relay connector
Replace
Synchronize the open/close
status of R damper with that
of C damper.
e 14
Trouble of
chilled compart-
ment thermistor
2. Check the resistance of thermistor.
Replace
1. Connector CN7S on control board, 4-pin
relay connector
e
16
Trouble of veg-
etable compart-
ment thermistor
2. Check the resistance of thermistor.
Replace
• When R-damper is open,
V-heater is turned on.
•
When R-damper is closed,
V-heater is turned off.
Synchronize the open/close
status of C damper with that
of R damper.
01
02
1. Connector CN7S on control board, 6-pin
relay connector
e 15
Trouble of
versa compart-
ment thermis-
tor
2. Check the resistance of thermistor.
Replace
•When S-compartment is
used as “freezer”: S-damper
is open when compressor is
turned on, S-damper is
closed when compressor is
turned off.
•When S-compartment is
used other than “freezer”: S-
damper remains open for
the first 3 minutes and then
closed for the rest of time.
S-compartment:
Versa(select) compartment.
ee ➝ 110 0 ➝ 1133 ➝ 3311 ➝ ee ➝ 110 0 ➝ 1133 ➝ 3311
·····
Replace the
control
board.
Repair the
contact failure.
Repair the
contact failure.
Repair the
contact failure.
Repair the
contact failure.
Repair the
contact failure.
Repair the
contact failure.
Repair the
contact failure.
When there is a short or
open circuit in the freezer
compartment thermistor.
When there is a short or
open circuit in the defrost
thermistor.
When there is a short or
open circuit in the refrig-
erator compartment ther-
mistor.
When there is a short or
open circuit in the chilled
compartment thermistor.
When there is a short or
open circuit in the veg-
etable compartment ther-
mistor .
When there is a short or
open circuit in the ice
making tray thermistor.
When there is a short or
open circuit in the versa
compartment thermistor.
Repair the
contact failure.
(2) Timing in self-check
Trouble of Defrost heater : Self-check is conducted after defrosting.
(Make sure to confirm the display before unplugging the power cord
because it is automatically reset once the power cord is pulled out.)
Trouble of Ice maker : Press the switch on the panel for 5 seconds. (Ice making test mode.)
The setting of ice making compartment blinks on LCD during the test operation.
Trouble of Fan motor : Open the door and then closed it.
When abnormality is found in fan motor, buzzer sound is heard every time the door
is closed.
Trouble of Inverter : Check the error when compressor starts up or is operating.
Trouble of Thermistor : Self-check is continuously working
e
33
TEMP
TEMP
OA090-1.qxp 06.7.20 9:55 AM Page 15