Main Outdoor 7-segment display, Remote

		Check code

Main		Outdoor 7-segment display
remote
remote	Check code	Auxiliary code
controller	Check code	Auxiliary code
E31	E31	01: IPDU1 error
		02: IPDU2 error
		03: IPDU1, 2 errors
		04: Fan IPDU error
		05: IPDU1 + Fan IPDU error
		06: IPDU2 + Fan IPDU error
		07: All IPDU error or communication error
		between IPDU and I/F P.C. board or
		outdoor I/F P.C. board error

F01	—	—

F02	—	—

F03	—	—

F04	F04	—

F05	F05	—

F06	F06	—

F07	F07	—

F08	F08	—

F10	—	—

F12	F12	01: TS1
		02: TS2

Detected	Check code name	Status	Error detection condition	Check item (position)
position	Check code name	Status	Error detection condition	Check item (position)
position
I/F	IPDU communication	All stop	Communication of each IPDU (P.C. board) in	• Check connection of communication connector and
	error		inverter box interrupted.	disconnection between IPDU and I/F P.C. board.
				• Check outdoor P.C. board (I/F, IPDU, Fan IPDU) error.
				• Check external noise.
				• Check power supply P.C. board for fan error.

Indoor unit	Indoor TCJ sensor	Corresponding	•	Resistance value of sensor is infinite or zero.	•	Check connection/cabling of TCJ sensor connector.
	error	unit only stops.		(Open/Short)	• Check characteristics of TCJ sensor resistance value.
					• Check characteristics of TCJ sensor resistance value.
					• Check indoor P.C. board error.

Indoor unit	Indoor TC2 sensor	Corresponding	•	Resistance value of sensor is infinite or zero	•	Check connection/cabling of TC2 sensor connector.
	error	unit only stops.		(Open/Short).	• Check characteristics of TC2 sensor resistance value.
					• Check characteristics of TC2 sensor resistance value.
					• Check indoor P.C. board error.

Indoor unit	Indoor TC1 sensor	Corresponding	•	Resistance value of sensor is infinite or zero	•	Check connection/cabling of TC1 sensor connector.
	error	unit only stops.		(Open/Short).	• Check characteristics of TC1 sensor resistance value.
					• Check characteristics of TC1 sensor resistance value.
					• Check indoor P.C. board error.

I/F	TD1 sensor error	All stop	•	Resistance value of sensor is infinite or zero	•	Check connection of TD1 sensor connector.
				(Open/Short)	• Check characteristics of TD1 sensor resistance value.
					• Check characteristics of TD1 sensor resistance value.
					• Check outdoor P.C. board (I/F) error.

I/F	TD2 sensor error	All stop	•	Resistance value of sensor is infinite or zero	•	Check connection of TD2 sensor connector.
				(Open/Short)	• Check characteristics of TD2 sensor resistance value.
					• Check characteristics of TD2 sensor resistance value.
					• Check outdoor P.C. board (I/F) error.

I/F	TE1 sensor error	All stop	•	Resistance value of sensor is infinite or zero	•	Check connection of TE1 sensor connector.
				(Open/Short).	•	Check characteristics of TE1 sensor resistance value.
					• Check outdoor P.C. board (I/F) error.

I/F	TL sensor error	All stop	•	Resistance value of sensor is infinite or zero	•	Check connection of TL sensor connector.
				(Open/Short).	•	Check characteristics of TL sensor resistance value.
					• Check outdoor P.C. board (I/F) error.

I/F	TO sensor error	All stop	•	Resistance value of sensor is infinite or zero	•	Check connection of TO sensor connector.
				(Open/Short).	•	Check characteristics of TO sensor resistance value.
					• Check outdoor P.C. board (I/F) error.

Indoor	Indoor TA sensor	Corresponding	•	Resistance value of sensor is infinite or zero	•	Check connection/cabling of TA sensor connector.
	error	unit only stops.		(Open/Short).	•	Check characteristics of TA sensor resistance value.
					• Check indoor P.C. board error.

I/F	TS1, TS2 sensor	All stop	•	Resistance value of sensor is infinite or zero	•	Check connection of TS1 or TS2 sensor connector.
	error			(Open/Short).	•	Check characteristics of TS1, TS2 sensor resistance value.
					•	Check outdoor P.C. board (I/F) error.

MMU-AP0181MH, MMU-AP0071MH, MMU-AP0091MH, MMU-AP0151MH, MMU-AP0121MH specifications

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Check code

Main

Outdoor 7-segment display

remote

Check code

Auxiliary code

Detected

MMU-AP0181MH, MMU-AP0071MH, MMU-AP0091MH, MMU-AP0151MH, MMU-AP0121MH specifications