Remote Check code, Check item position

	Check code
			Detected
Main	Outdoor 7-segment display		Detected	Check code name	Status
Main	Outdoor 7-segment display		position	Check code name	Status
remote			position
remote	Check code	Auxiliary code
controller	Check code	Auxiliary code

F13	F13	01: Compressor 1 side	IPDU	TH sensor error	All stop
		02: Compressor 2 side

F15	F15	—	I/F	Outdoor temp sensor	All stop
				miscabling (TE1, TL)

F16	F16	—	I/F	Outdoor pressure sensor	All stop
				miscabling (Pd, Ps)

F23

—

I/F

Ps sensor error

All stop

F24	F24	—	I/F	Pd sensor error	All stop

F29	—	—	Indoor	Indoor other error	Corresponding
					unit only stops.

F31	F31	—	I/F	Outdoor EEPROM error	All stop (*1)

H01	H01	01: Compressor 1 side	IPDU	Compressor breakdown	All stop
		02: Compressor 2 side

H02	H02	01: Compressor 1 side	IPDU	Compressor error (lock)	All stop
		02: Compressor 2 side		MG-SW error
				OCR operation

Error detection condition

Check item (position)

• Resistance value of sensor is infinite or zero	•	IGBT built-in temp sensor error
(Open/Short).		→ Exchange IPDU P.C. board.
		→ Exchange IPDU P.C. board.

During operation of compressor in HEAT mode, the	• Check installation of TE1 sensor and TL sensor.
TE1 detection temp was higher than that of TL by the	• Check characteristics of TE1 and TL sensor resistance value.
specified value continued for 3 minutes or more.
specified value continued for 3 minutes or more.	•	Check outdoor P.C. board (I/F) error.
	•	Check outdoor P.C. board (I/F) error.

High-pressure Pd sensor and low-pressure Ps sensor	• Check connection of high-pressure Pd sensor connector.
were exchanged, or output voltages of both sensors	• Check connection of low-pressure Ps sensor connector.
are zero.	• Check connection of low-pressure Ps sensor connector.
are zero.	• Check pressure sensors Pd and Ps error.
	• Check pressure sensors Pd and Ps error.
	•	Check outdoor P.C. board (I/F) error.
	• Check compression error of compressor.

Output voltage of Ps sensor was zero.	• Misconnection of Ps sensor and Pd sensor connectors
	• Check connection of Ps sensor connector.
	• Check Ps sensor error.
	• Check compression error of compressor.
	• Check 4-way valve error.
	•	Check outdoor P.C. board (I/F) error.
	•	Check SV4 circuit error.

Output voltage of Pd sensor was zero. (Sensor Open)	• Check connection of Pd sensor connector.
Pd > 4.15MPa during stop of compressor	• Check Pd sensor error.
	•	Check outdoor P.C. board (I/F) error.

Indoor P.C. board did not operate normally.	• Check indoor P.C. board error (EEPROM error).

Outdoor P.C. board (I/F) did not operate normally.	• Check power voltage.
	• Check power noise.
	•	Check outdoor P.C. board (I/F) error.

Inverter current detection circuit detected over-current	• Check power voltage. (AC220–240V ± 10%).
and stopped.	• Check compressor error.
	• Check compressor error.
	• Check cause of abnormal overload operation.
	• Check outdoor P.C. board (IPDU) error.

Over-current was detected several seconds after	• Check compressor error.
header compressor had started.	• Check power voltage. (AC380–10%, 415V +10%).
	• Check power voltage. (AC380–10%, 415V +10%).
	• Check cable of compressor and phase-missing.
	• Check connector/terminal connection on IPDU P.C. board.
	• Check conduction of case heater.
		(Check activation error due to liquid stagnation in compressor.)
	• Check outdoor P.C. board (IPDU) error.
	• Check outdoor MG-SW or OCR.

(*1) All stop only in case of the header unit The follower unit continues operation.

MG-SW : Magnet Switch, OCR : Over-current Relay

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

The Toshiba MMU-AP series, consisting of models MMU-AP0121MH, MMU-AP0151MH, MMU-AP0091MH, MMU-AP0071MH, and MMU-AP0181MH, represents a significant advancement in the realm of power management and energy efficiency for a variety of applications. These modules are designed to optimize performance while ensuring minimal energy consumption, making them suitable for both commercial and industrial uses.

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Toshiba MMU-AP0121MH, MMU-AP0181MH, MMU-AP0151MH Remote Check code, Check item position

Models: MMU-AP0181MH MMU-AP0071MH MMU-AP0091MH MMU-AP0151MH MMU-AP0121MH

remote

Check code

Auxiliary code

IPDU

Check item (position)

• Check installation of TE1 sensor and TL sensor.

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