Procedure | Mitsubishi Electronics PUZ-A24NHA2, PUZ-A42NHA2-BS

10-3-4. Malfunction-diagnosis method by wireless remote controller

<In case of trouble during operation>

When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop.

<Malfunction-diagnosis method at maintenance service>

CHECK display

ON/OFF button

CHECK button

CHECK

ON/OFF	TEMP
	FAN	AUTO STOP
MODE	VANE	AUTO START
CHECK	LOUVER	h
TEST RUN		min
SET	RESET CLOCK

[Procedure]

Refrigerant	1. Press the CHECK button twice.	• "CHECK" lights, and refrigerant
Refrigerant		address "00" blinks.
address		address "00" blinks.
address		• Check that the remote controller's
display		• Check that the remote controller's
		display has stopped before continuing.
Temperature	2. Press the temperature	• Select the refrigerant address of the
Temperature	buttons.	indoor unit for the self-diagnosis.
button		Note: Set refrigerant address using the
		Note: Set refrigerant address using the
		outdoor unit’s DIP switch (SW1).
		(For more information, see the
		outdoor unit installation manual.)
HOUR	3. Point the remote controller at the	• If an air conditioner error occurs, the
HOUR	sensor on the indoor unit and	indoor unit's sensor emits an intermit-
button	sensor on the indoor unit and	indoor unit's sensor emits an intermit-
button	press the HOUR button.	tent buzzer sound, the operation lamp
	press the HOUR button.	tent buzzer sound, the operation lamp
		blinks, and the error code is
		output.
		(It takes 3 seconds at most for error
		code to appear.)
	4. Point the remote controller at the	• The check mode is cancelled.
	sensor on the indoor unit and
	press the ON/OFF button.

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