Toshiba MMU-AP0091H service manual 131, Check code Detected Main Outdoor 7-segment display

131

		Check code
				Detected
Main		Outdoor 7-segment display	AI-NET		Check code name	Status	Error detection condition		Check item (position)
				position
remote			central control
controller	Check code	Sub-code	remote controller
L06	L06	No. of indoor units with priority	96	I/F	Duplicated indoor units with	All stop	Indoor units with priority were	•	Check display of indoor unit with priority and outdoor unit.
					priority		duplicated.
					(Displayed on the unit other
					than indoor unit with priority)
L07	—	—	99	Indoor	Group line in individual	Corresponding	At least one indoor unit connected	•	Check indoor address.
					indoor unit.	unit only stops. to a group existed in the individual
							indoor units.
L08	L08	—	99	Indoor	Indoor group / address	Corresponding	Address was not yet set up.	•	Check indoor address.
					unset	unit only stops.		Note)
								After installation, this code is displayed when the power is first
								turned on.
L09	—	—	46	Indoor	Indoor capacity unset	Corresponding	Indoor unit capacity was unset.	Set up indoor capacity. (DN=11)
						unit only stops.
L10	L10	—	88	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.
L17	L17	—		I/F	Inconsistent models of		1 and 2 series outdoor units have	•	Check outdoor units.
					outdoor units		been mixed.
L18	L18	Corresponding indoor address	8A	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 a FS unit is		•	Check FS unit.
							operating without setup of cooling		Check pipe connection to FS unit.
							only mode.
									(Mispiping between discharge gas and suction gas)
									Check miswiring/misinstallation of SVS/SVD valves.
L20	—	—	98	AI-NET,	Duplicated central control	All stop	Duplicated central control	• Check central control address.
				Indoor	addresses		addresses	• Check network adaptor P.C. board. (In case of AI-NET)
L28	L28	—	46	I/F	Quantity over of connected	All stop	There were more than four outdoor	• Check No. of connected outdoor units.
					outdoor units		units.		(Max. 4 units per 1 system)
								•	Check communication line between outdoor units.
								• Check outdoor P.C. board (I/F) error.
L29	L29	01: IPDU1 error	CF	I/F	IPDU quantity error	All stop	No. of IPDU units detected when	• Check model setup for outdoor I/F service P.C. board.
		02: IPDU2 error					power was turned on were less.	• Check connection of UART communication connector.
		03: IPDU1, 2 errors						•	Check IPDU, fan IPDU, and I/F P.C. board error.
		04: Fan IPDU error						Note)
		05: IPDU1 + Fan IPDU error
								UART: Universal Asynchronous Receiver Transmitter
		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	b6	Indoor	Interlock in indoor unit from	Corresponding	• Outside error input terminal	n Outside device is connected to connector (CN80):
					outside	unit only stops.	Detected signal to (CN80) for	1)	Check outside device error.
							more than 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.
—	L31	—	—	I/F	Extended IC (Integrated	Operation	P.C. board (I/F) parts error	Check indoor (I/F) P.C. board.
					Circuit) error	continues.