Oil level detective circuit system error

Check code name

Cause of operation

[H16]		Oil level detective circuit system error			1. Detachment of TK2 sensor, miscabling,
			(Auxiliary code : 02)		characteristics error of resistance value
					2. Oil-equalization circuit error
					(Check valve, capillary clogging,
					strainer clogging)
					3. Refrigerant stagnation in compressor
					shell

Is not TK2 sensor detached?			YES			Correct installation of sensor.


	NO
	NO

						Correct miscabling/misinstallation.
						Correct miscabling/misinstallation.
Is there no miscabling or misinstallation			YES			TK1: CN514
Is there no miscabling or misinstallation						TK2: CN515
on TK1/TK2/TK3/TK4 sensors?						( TK3: CN516 )
						( TK3: CN516 )
	NO		NO			TK4: CN523
	NO

Are characteristics of TK2 sensor
Are characteristics of TK2 sensor						Sensor error
resistance value normal?			Outdoor unit temp sensor characteristics-4			Sensor error
resistance value normal?
	YES
	YES
			YES

Does OCR of MG-SW operate?						Reset OCR manually.( 2)


	NO
	NO
After power reset				Error
				Error
Start a test operation in COOL or HEAT mode.						Replace clogging part.
Start a test operation in COOL or HEAT mode.						Replace clogging part.

TK2 sensor temp is displayed on 7-segment display with SW01/02/03=[1] [12] [2].

Check TK2 sensor temp approx. 10 minutes after compressor 2 has operated.
If low temperature continues (approximately outside temp) or temperature
does not almost change, a clogging of strainer of oil-equalization circuit,					Compressor 2
clogging of capillary, or malfunction of check valve is considered.					Compressor 2


	No error
					Strainer
				Capillary tube
					TK2
Check the clogging of SV3E valve.		Error		Oil tank
(*1)		1 Refer to item [H07] error.
		1 Refer to item [H07] error.
	No error


Check I/F P.C. board			Replace SV3E valve.

2 If OCR operates even after manual reset of OCR, check whether the wiring to the current sensor (T02) of Comp-IPDU is correct or not.

Check code name

Cause of operation

[H16]	TK3 temperature detective circuit error			1. Detachment of TK3 sensor, miscabling,
		(Auxiliary code : 03)		characteristics error of resistance value
				2. Error of SV3C valve circuit periphery
				(Check capillary clogging, strainer
				clogging)
				3. Refrigerant stagnation in compressor
				shell

		YES
Is not TK3 sensor come off?		YES			Correct installation of sensor.


	NO
	NO

					Correct miscabling/misinstallation.
					Correct miscabling/misinstallation.
Is there no miscabling or misinstallation		YES			TK1: CN514
Is there no miscabling or misinstallation					TK2: CN515
on TK1/TK2/TK3/TK4 sensors?					( TK3: CN516 )
					( TK3: CN516 )
	NO	NO			TK4: CN523

Are characteristics of TK3 sensor
					Sensor error Replace

resistance value normal?		* Outdoor unit temp sensor characteristics-4
resistance value normal?
YES
YES
	After power reset,
	check capillary choke of SV3C valve bypass.
			Error
Start a test operation in COOL or HEAT mode.			Error		Replace clogged part (Capillary).

TK3 sensor temp is displayed on 7-segment display with SW01/02/03=[1] [13] [2].

Check TK3 sensor temp approx. 10 minutes after compressor 2 has operated.			Strainer
If low temperature continues (approximately outside temp) or temperature			Strainer
does not almost change, a clogging of parallel capillary is considered.
	No error			SV3E valve
	No error

			TK3
		Error
Check the clogging of SV3E valve.
				Replace SV3E valve.

(Note 1)		(Note 1) Refer to item [H07] error.
(Note 1)
	No error
	No error


Check I/F P.C. board

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.

Toshiba MMU-AP0091MH, MMU-AP0181MH, MMU-AP0151MH Oil level detective circuit system error

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

[H16]