Toshiba MMU-AP0071MH, MMU-AP0181MH, MMU-AP0151MH, MMU-AP0091MH L30 Detected indoor address L31

58

			Check code
Main		Outdoor 7-segment display
remote
	Check code		Auxiliary code
controller
L06	L06		No. of indoor units with priority
L07	—		—
L08	L08		—
L09	—		—
L10	L10		—
L17	L17		—
L18	L18		Corresponding indoor address
L20	—		—
L28	L28		—
L29	L29		01: IPDU1 error
			02: IPDU2 error
			03: IPDU1, 2 errors
			04: Fan IPDU error
			05: IPDU1 + Fan IPDU error
			06: IPDU2 + Fan IPDU error
			07: All IPDU error or communication
			error between IPDU and I/F P.C.
			board, or outdoor I/F P.C. board error
L30	L30		Detected indoor address
—	L31		—

Detected	Check code name	Status	Error detection condition	Check item (position)
position
I/F	Duplicated indoor units with priority	All stop	Indoor units with priority were	• Check display of indoor unit with priority and outdoor unit.
	(Displayed on the unit other than		duplicated.
	indoor unit with priority)
Indoor	Group line in individual indoor unit.	Corresponding	At least one indoor unit connected	• Check indoor address.
		unit only stops.	to a group existed in the individual
			indoor units.
Indoor	Indoor group / address unset	Corresponding	Address was not yet set up.	• Check indoor address.
		unit only stops.		Note)
				After installation, this code is displayed when the power is firstly
				turned on.
Indoor	Indoor capacity unset	Corresponding	Indoor unit capacity was unset.	Set up indoor capacity. (DN=11)
		unit only stops.
I/F	Outdoor capacity unset	All stop	On the I/F P.C. board for service,	Check model setup on outdoor I/F P.C. board A’ssy for service.
			jumper line was not cut according to
			the model.
I/F	Inconsistent models of outdoor		Outdoor units of 1 series and those	• Check outdoor units.
	units		of 2 series were mixed.
I/F	FS unit system error	Corresponding	An indoor unit which is not	• Check setup of remote controller (DN=[OFF]).
		unit only stops.	connected with FS unit is driving	• Check FS unit.
			without setup for cooling only mode.	Check pipe connection to FS unit.
				(Mispiping between discharge gas and suction gas)
				Check miswiring/misinstallation of SVS/SVD valves.
Indoor	Duplicated central control	All stop	Duplicated central control	• Check central control address.
	addresses		addresses	• Check network adaptor P.C. board. (In case of AI-NET)
I/F	Quantity over of connected outdoor	All stop	There were more than four outdoor	• Check No. of connected outdoor units.
	units		units.	(Max. 4 units per 1 system)
				• Check communication line between outdoor units.
				• Check outdoor P.C. board (I/F) error.
I/F	IPDU quantity error	All stop	No. of IPDU units detected when	• Check model setup for outdoor I/F service P.C. board.
			power was turned on were less.	• Check connection of UART communication connector.
				• Check IPDU, fan IPDU, and I/F P.C. board error.
				Note)
				UART: Universal Asynchronous Receiver Transmitter
Indoor	Interlock in indoor unit from outside	Corresponding	• Outside error input terminal
				n Outside device is connected to connector (CN80):
		unit only stops.	Detected signal to (CN80) for	1) Check outside device error.
			more 1 minute	2) Check indoor P.C. board error.
				n Outside device is not connected to connector (CN80):
				1) Check indoor P.C. board error.
				Check indoor (I/F) P.C. board.
I/F	Extended IC (Integrated Circuit)	Operation	P.C. board (I/F) parts error
				Check indoor (I/F) P.C. board.
	error	continues.