Toshiba MMU-AP0091MH Check code, Main Outdoor 7-segment display Remote, Convenient functions

		Check code
Main	Outdoor 7-segment display
remote
	Check code	Auxiliary code
controller
E12	E12	01: Indoor/outdoor communication
		02: Between outdoors communication
E15	E15	—
E16	E16	00: Capacity over
		01 to: No. of connected units

52	E18	—	—
	E19	E19	00: No header unit
			02: Two or more header units
	E20	E20	01: Connection of outdoor of other line
			02: Connection of indoor of other line
	E23	E23	—
	E25	E25	—
	E26	E26	No. of normally received outdoor units
	E28	E28	No. of detected outdoor units

Detected	Check code name	Status		Error detection condition			Check item (position)
position
I/F	Automatic address	All stop	•	When indoor automatic address started,		•	Setup the address again after disconnecting communication
	start error			other refrigerant circuit system was setting			connection with other refrigerant circuit system.
				automatic address.
			•	When outdoor automatic address started,
				indoor automatic address was executed.
I/F	No corresponding	All stop	Indoor unit is not found when indoor automatic			• Check the communication line connection between indoor and outdoor.
	indoor unit during		address start was set up.			•	Check the electric power line error in indoor.
	automatic address					•	Check the noise of surrounding devices.
						•	Power failure
						• Check indoor P.C. board error.
I/F	No. of connected	All stop	•	Total capacity of indoor units exceeded		•	Check the connection capacity of indoor unit.
	indoor units /			135% of total outdoor capacity.		•	Check the HP capacity of indoor unit.
	Capacity over		• No. of connected indoor units are more than			•	Check the indoor/outdoor capacity setup
				48 units.		• Check the No. of connected indoor units.
			[Note]
						•	Check the outdoor I/F P.C. board error
			If this code appears after backup setup of
			outdoor unit trouble, set up “No. capacity-over
			detection”.
			<Setup method of “No. capacity-over
			detection”>
			Turn on SW09/Bit 2 on I/F P.C. board of
			outdoor header unit.
Indoor	Communication error	Corresponding	Regular communication between indoor			•	Check cable of the remote controller.
unit	between indoor header	unit only stops.	header and follower units			•	Check power cabling of indoor.
	and follower units					• Check P.C. board of indoor.
I/F	Outdoor unit quantity	All stop	•	There are multiple outdoor units in 1 line.		The outdoor unit connected with communication cable between
	error		•	There is none of outdoor unit in 1 line.		indoor and outdoor (U1.U2) is the outdoor unit.
						•	Check connection of communication line between indoor and outdoor.
						• Check outdoor P.C. board(I/F) error.
I/F	Other line unit	All stop	Unit of other line was connected when indoor			Separate the cable between lines according to automatic address
	connected during		automatic address started.			setup method in “Address setup”.
	automatic address
I/F	Communication	All stop	Transmission of other outdoor unit was			In this model, only one outdoor unit is provided to one refrigerant line.
	sending error between		unavailable for 30 seconds or more.			Be sure to check there is no communication connection with outdoor
	outdoor units					unit in the other refrigerant line.
I/F	Duplicated outdoor	All stop	Outdoor addresses manually set up are			Note)
	follower address setup		duplicated.			Do not set up the outdoor address manually.
I/F	Decreased number of	All stop	The signal was not returned for constant from			In this model, only one outdoor unit is provided to one refrigerant line.
	connected outdoor		the outdoor unit which was receiving signal.			Be sure to check there is no communication connection with outdoor
	units					unit in the other refrigerant line.
I/F	Outdoor follower unit	All stop	Outdoor header unit received error code from			•	Check the check code of outdoor follower unit.
	error		outdoor follower unit.
					<Convenient functions>
								is displayed on 7-segment display of
				When pushing SW04 for 1 second or more under condition that [E28]
				outdoor header unit, the fan of outdoor unit which stopped abnormally starts rotating.
				If pushing SW04 and SW05 simultaneously, the fan of normal outdoor unit operates.
				When pushing SW05 singly, the operation of fan is cleared.