Mitsubishi Electronics MR-G50J-SS-NZ Timing in self-check, Error display and trouble locating

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(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

(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” 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 (e10), refrigerator thermistor (e13) and refrigerator fan motor (e31) are happening simultaneously;

TEMP

TEMP

e ➝ 10 ➝ 13 ➝ 31 ➝ e ➝ 10 ➝ 13 ➝ 31 ·····

✻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

Testing

Self-check LCD

Error code			Trouble	Detecting method		Check point	Treatment	Control
				(*3)
	(*1)			Ice maker is under testing
			(*5)	When the following communi-	1.	Connector CN8K, CN7S on control board	Repair the	Keep the same operation as
			Communication	cation errors occur		4-pin relay connector (hinge)	contact failure.	the one before the communi-
			error of	between control board and		4-pin connector on operation P.C. board		cation error has occurred.
				operation P.C. board:
			operation panel
e		01		•They transmit and receive
				data that has nothing to do
				with settings.	2.	Trouble of control board and operation	Replace
				•They cannot transmit and		P.C. board
				receive data each other
				for about two seconds.
			Communication	When abnormality is found in			Replace the	Compressor OFF.
			error of inverter	the communication between			control
e		02		refrigerator control circuit and			board.
				inverter control circuit in con-
				trol board. (When they do not
				transmit and receive data for
				10 seconds.)
			Trouble of	When the model of con-	1.	Check the model name of control board	Replace	Keep operating the unit, and
e		03	model judge-	trol board is different from				conduct error code indication
			ment	the one of operation P.C.	2.	Check the operation p.c. board.	Replace	only.
				board.
			Trouble of ice	When there is a short or	1.	Connector CN7S on control board, Ice gear	Repair the	When the compartment door
			making tray	open circuit in the ice		box 6-pin relay connector, 8-pin relay	contact failure.	has been closed for 3 hours
e		10	thermistor	making tray thermistor.		connector		and when freezer compartment
					2.	Check the resistance of thermistor.	Replace	thermistor is -10:or less, ice-
								detecting operation starts.
			Trouble of	When there is a short or	1.	Connector CN7S on control board. 6-pin	Repair the	After 10 minutes off, the
e		11	freezer com-	open circuit in the freezer		relay connector	contact failure.	compressor repeats 30-
			partment	compartment thermistor.				minute ON and 20-minute
			thermistor		2. Check the resistance of thermistor.		Replace	OFF.
			Trouble of	When there is a short or	1.	Connector CN7S on control board. 2-pin	Repair the	The defrost heater won’t be
e		12	defrost	open circuit in the defrost		relay connector	contact failure.	turned ON.
			thermistor	thermistor.
					2.	Check the resistance of thermistor.	Replace
			Trouble of	When there is a short or	1.	Connector CN7S on control board, 4-pin	Repair the	Synchronize the open/close
e		13	refrigerator	open circuit in the refrig-		relay connector	contact failure.	status of R damper with that
			thermistor	erator compartment ther-				of C damper.
				mistor.	2.	Check the resistance of thermistor.	Replace
			Trouble of	When there is a short or	1.	Connector CN7S, on control board, 6-pin	Repair the	Synchronize the open/close
e		14	chilled compart-	open circuit in the chilled		relay connector	contact failure.	status of C damper with that
			ment thermistor	compartment thermistor.			Replace	of R damper.
					2.	Check the resistance of thermistor.
			Trouble of	When there is a short or	1. Connector CN7S on control board, 6-pin		Repair the	•When S-compartment is
			versa compart-	open circuit in the versa		relay connector	contact failure.	used as “freezer”: S-damper
			ment thermis-	compartment thermistor.				is open when compressor is
			tor					turned on, S-damper is
								closed when compressor is
e		15			2. Check the resistance of thermistor.		Replace	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.
			Trouble of veg-	When there is a short or	1.	Connector CN7S on control board, 4-pin	Repair the	•When R-damper is open,
e		16	etable compart-	open circuit in the veg-		relay connector	contact failure.	V-heater is turned on.
			ment thermistor	etable compartment ther-				•When R-damper is closed,
				mistor .	2.	Check the resistance of thermistor.	Replace	V-heater is turned off.