Detected Main, Position Remote | Toshiba MMU-AP0181MH, MMU-AP0151MH

	Check code
			Detected
Main	Outdoor 7-segment display		Detected	Check code name	Status	Error detection condition		Check item (position)
Main	Outdoor 7-segment display		position	Check code name	Status	Error detection condition		Check item (position)
remote			position
remote
controller	Check code	Auxiliary code

H03	H03	01: Compressor 1 side	IPDU	Current detection	All stop	While header compressor stopped, current flowed	• Check cabling of current detection circuit system.
		02: Compressor 2 side		circuit system error		more than the specified current and was detected.	• Check outdoor P.C. board (IPDU) error.

H04	H04	—	I/F	Compressor 1 case	All stop	Compressor 1 case thermostat performed	• Check compressor 1 case thermo circuit. (Connector, cable, P.C. board)
				thermo operation		protective operation.	• Check full opening of service valve. (Gas and liquid side)

							• Check outdoor PMV clogging. (PMV1, 2, 3)
							• Check SV41 circuit leakage.
							• Check miscabling/misinstallation of SV41 and SV42.
							• Check valve open status of indoor PMV.
							• Check 4-way valve error.
							•	Check refrigerant shortage.
							• Check SV5 leak.
							• Check SV11 circuit. (Wiring, OFF at one side only)
							• Check mispiping of discharge gas/suction gas main pipe.
							•	Check Flow selector unit.
								Check leakage of SVD valve and SVS valve.
								(Check leakage of SVDD valve and SVSS.)
								Check mispiping of FS unit connecting pipe (Suction gas/Discharge gas),
								wiring between FS unit and indoor unit, and connection of connectors.
								Check miswiring of SVS/SVD valves.

H06	H06	—	I/F	Low-pressure	All stop	Low-pressure Ps detected operation lower than	• Check full opening of service valve.
				protective operation		0.02MPa.		(Discharge gas, suction gas and liquid side)
							• Check outdoor PMV clogging. (PMV1, 2)
							•	Check SV2 circuit and SV4 circuit error.
							• Check low-pressure Ps sensor error.
							•	Check indoor air filter clogging.
							• Check valve open of indoor PMV.
							•	Check refrigerant pipe clogging.
							• Check outdoor fan operation.
								(All heating, mainly heating, part cooling operation)
							•	Check refrigerant shortage.
							•	Check clogging of circuit at auxiliary heat exchanger side.
								(PMV3, SV12, check valve)
							• Check 4-way valve error. (Reversal error)
							• Check mispiping of discharge gas/suction gas main pipe.
							•	Check Flow selector unit.
								Check miswiring of discharge gas/suction gas pipe to FS unit.
								Check wiring between FS unit and indoor unit.
								Check miswiring of SVD/SVS valves, misinstallation of coil.
								Check opened status of SVS valve.

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.

One of the standout features of the MMU-AP series is its intelligent power management technology. This feature allows for adaptive energy distribution based on real-time demands. By leveraging precise control algorithms, the modules can adjust their output to match the specific requirements of connected devices, ultimately leading to reduced power loss and increased efficiency. This adaptability not only benefits end-users by lowering operational costs but also contributes to a greener environment by minimizing waste.

The versatility of the MMU-AP series is evident in its wide range of operational capabilities. These power modules are designed to work effectively in various voltage levels and load conditions. With input voltage ranges suitable for standard industrial environments, they can easily be integrated into existing systems, enhancing overall functionality without requiring extensive modifications.

Moreover, the compact design of the MMU-AP modules is another notable characteristic. Their size and light weight facilitate easier installation and integration into tight spaces, making them ideal for applications where real estate is a premium. This compact profile does not compromise performance, as these modules are engineered to deliver robust power output while maintaining thermal efficiency.

In terms of reliability, the MMU-AP series is built with high-grade components that withstand harsh operating conditions. With features such as over-voltage protection, short-circuit protection, and thermal shutdown capabilities, users can trust that their equipment would operate safely and efficiently, thereby extending the lifespan of both the power modules and the devices they serve.

Finally, Toshiba’s commitment to innovation ensures that the MMU-AP series incorporates cutting-edge technology. The series supports communication protocols that enable seamless integration with smart systems, paving the way for advanced monitoring and control functions. This levels up the user experience, providing insights into performance and diagnostics that are crucial for uptime and reliability in demanding environments.

In conclusion, the Toshiba MMU-AP series offers a blend of efficiency, adaptability, and advanced technology, making it a valuable asset for various industrial and commercial applications. Its intelligent design and robust features ensure that users can optimize energy use while maintaining high performance and reliability.

Check code

Detected

Main

Outdoor 7-segment display

Status

Error detection condition

Check item (position)

position

remote

Check code

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