Toshiba MMU-AP0071YH installation manual Check method, Check code list, Terminology

Check method

On the remote controller (Main remote controller, Central control remote controller) and the interface P.C. board of the outdoor unit (I/F), a check display LCD (Remote controller) or 7-segment display (on the outdoor interface P.C. board) to display the operation is provided. Therefore the operation status can be known. Using this self-diagnosis function, a trouble or position with error of the air conditioner can be found as shown in the table below.

Check code list

The following list shows each check code. Find the check contents from the list according to part to be checked.

•In case of check from indoor remote controller: See “Main remote controller display” in the list.

•In case of check from outdoor unit: See “Outdoor 7-segment display” in the list.

•In case of check from AI-NET central control remote controller: See “AI-NET central control display” in the list.

•In case of check from indoor unit with wireless remote controller: See “Sensor block display of receiving unit” in the list.

Terminology

AI-NET : Artificial Intelligence.

IPDU : Intelligent Power Drive Unit

¡: Lighting, ¤: Flashing, l : Goes off

ALT. : Flashing is alternately when there are two flashing LED.

SIM : Simultaneous flashing when there are two flashing LED.

			Check code		Wireless remote controller
Main		Outdoor 7-segment display		AI-NET central	Sensor block display				Check code name	Judging device
remote					of receiving unit
controller				control display
display			Auxiliary code		Operation	Timer Ready		Flash
E01	—		—	—	¤				Communication error between indoor and	Remote controller
						l	l		remote controller
									(Detected at remote controller side)
E02	—		—	—	¤	l	l		Remote controller transmission error	Remote controller
E03	—		—	97	¤	l	l		Communication error between indoor and	Indoor
									remote controller (Detected at indoor side)
E04	—		—	04	l	l	¤		Communication circuit error between indoor/	Indoor
									outdoor (Detected at indoor side)
			No. of indoor units in which		l	l	¤
E06	E06		sensor has been normally	04					Decrease of No. of indoor units	I/F
			received
—	E07		—	—	l	l	¤		Communication circuit error between indoor/	I/F
									outdoor (Detected at outdoor side)
E08	E08		Duplicated indoor addresses	96	¤	l	l		Duplicated indoor addresses	Indoor / I/F
E09	—		—	99	¤	l	l		Duplicated main remote controllers	Remote controller
E10	—		—	CF	¤	l	l		Communication error between indoor MCU	Indoor
			01: Indoor/Outdoor		¤
E12	E12		communication	42		l	l		Automatic address start error	I/F
			02: Communication between
			outdoor units
E15	E15		—	42	l	l	¤		Indoor is nothing during automatic addressing	I/F
E16	E16		00: Capacity over	89	l	l	¤		Capacity over / No. of connected indoor units	I/F
			01 ~:No. of connected units
E18	—		—	97, 99	¤	l	l		Communication error between indoor units	Indoor
E19	E19		00: Header is nothing	96	l	l	¤		Outdoor header units quantity error	I/F
			02: Two or more header units
			01: Outdoor of other line				¤		Other line connected during automatic
E20	E20		connected	42	l	l				I/F
			02: Indoor of other line						address
			connected
E23	E23		—	15	l	l	¤		Sending error in communication between	I/F
									outdoor units
E25	E25		—	15	l	l	¤		Duplicated follower outdoor addresses	I/F
E26	E26		No. of outdoor units which	15	l	l	¤		Decrease of No. of connected outdoor units	I/F
			received signal normally
E28	E28		Detected outdoor unit number	d2	l	l	¤		Follower outdoor unit error	I/F
			01: IPDU1 error
			02: IPDU2 error
			03: IPDU1, 2 error		l	l	¤
E31	E31		04: Fan IPDU error	CF					IPDU communication error	I/F
			05: IPDU + Fan IPDU error
			06: IPDU2 + Fan IPDU error
			07: All IPDU error

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