Toshiba MMU-AP0091H service manual New check code

New check code

1.Difference between the TCC LINK and AI-NET check code

The displaying method of the check code changes in this model and onwards.

		AI-NET check code						TCC Link
	Used characters	Hexadecimal notation, 2 digits			Alphabet + Decimal notation, 2 digits
	Characteristics of code	Few classification of communication/				Many classification of communication/incorrect setup system
	classification	incorrect setup system
	Block display	Indoor P.C. board, Outdoor P.C.				Communication/Incorrect setup (4 ways), Indoor protection,
		board, Cycle, Communication				Outdoor protection, Sensor, Compressor protection, etc.
Display in wired remote controller					→		Display		Classification
							A		Unused
•	[ ] is displayed.
							C		Central control system error
•	[UNIT No.] + Check code + Operation lamp (Green) flash
							E		Communication system error
Display on sensor part in wireless remote controller
							F		Each sensor error (Failure)
•	Block display of combination of [		] [	] [ ]
							H		Compressor protective system error
Display on 7-segment in outdoor unit
							J		Unused
• Unit No. and check code are displayed.
							L		Setup error, Other errors
•	In a case of error with auxiliary code, the check code and the
							P		Protective device operation
	auxiliary code are displayed alternately.

2.Special mention

1)If this model is connected to AI-NET by network adaptor, the different check codes are displayed on the main remote controller and AI-NET central control remote controller.

Example) Indoor TA sensor error

AI-NETWORK BUS

Network adaptor

Indoorunit

OC

AI-NET central control remote controller

F10

Wired remote controller

2)The check code of the remote controller is displayed only while the air conditioner is operating (remote controller start button ON).

When the air conditioner has stopped and the error has been cleared, the check code display on the remote controller also disappears.

However, if the error continues after the unit has stopped, the check code is immediately displayed when the unit is restarted.

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