Toshiba RAV-SM1403AT-E1 service manual Operation of diagnostic function Judgment and measures

Error mode detected by remote controller or central controller (TCC-LINK)

					Operation of diagnostic function
									Judgment and measures
	Check code				Cause of operation	Status of	Condition
						air conditioner
								Power supply error of remote controller, Indoor
								EEPROM error
								1.	Check remote controller inter-unit wiring.
Not displayed at all					No communication with master indoor unit			2.	Check remote controller.
					• Remote controller wiring is not correct.
(Operation on						Stop	—	3.	Check indoor power wiring.
remote controller is					• Power of indoor unit is not turned on.			4.	Check indoor P.C. board.
impossible.)					• Automatic address cannot be completed.			5.	Check indoor EEPROM.
									(including socket insertion)
									→ Automatic address repeating phenom-
									enon generates.
					No communication with master indoor unit	Stop		Receiving error from remote controller
								1.	Check remote controller inter-unit wiring.
				E01	• Disconnection of inter-unit wire between	(Automatic reset)	Displayed when
								2.	Check remote controller.
				∗2	remote controller and master indoor unit	∗ If center exists,	error is detected
								3.	Check indoor power wiring.
					(Detected by remote controller side)	operation continues.
								4.	Check indoor P.C. board.
						Stop		Sending error of remote controller
				E02	Signal send error to indoor unit	(Automatic reset)	Displayed when	1. Check sending circuit inside of remote
					(Detected by remote controller side)	∗ If center exists,	error is detected		controller.
						operation continues.			→ Replace remote controller.
						Stop		1.	In 2-remote controllers (including wireless),
				E09	There are multiple main remote controllers.		Displayed when		there are multiple main units.
					(Detected by remote controller side)	(Sub unit	error is detected		Check that there are 1 main remote
						continues operation.)
									controller and other sub remote controllers.
				L20	Duplicated indoor central addresses on	Stop	Displayed when	1.	Check setting of central control system
									network address. (Network adapter SW01)
Central controller					communication of central control system	(Automatic reset)	error is detected	2.	Check network adapter P.C. board.
					(Detected by indoor/central controller side)
				L20
				—				1.	Check communication wire / miswiring
				∗3				2.	Check communication (U3, U4 terminals)
					Communication circuit error of central	Continues	Displayed when	3.	Check network adapter P.C. board.
Central controller
					control system			4. Check central controller (such as central
			(Send)			(By remote controller)	error is detected
					(Detected by central controller side)
				C05					control remote controller, etc.)
								5.	Check terminal resistance. (TCC-LINK)
		(Receive)
				C06
				—	Indoor Gr sub unit error	Continuation/Stop	Displayed when	Check the check code of the corresponding
						(According
Central controller					(Detected by central controller side)		error is detected	unit from remote controller.
						to each case)
				P30

∗2 The check code cannot be displayed by the wired remote controller. (Usual operation of air conditioner becomes unavailable.)

For the wireless models, an error is notified with indication lamp.

∗3 This trouble is related to communication of remote controller (A, B), central system (TCC-LINK U3, U4), and [E01], [E02], [E03], [E09] or [E18] is displayed or no check display on the remote controller according to the contents.

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