Toshiba RAV-SM1403DT-A service manual 91, 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			•	Power of indoor unit is not turned on.				4.	Check indoor P.C. board.
	is 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)
98
			—						1.	Check the multiple network adapters.
			∗ 3	There are multiple network adapters on the				Displayed when	2. Check inter-unit wire of remote controller /
				remote controller communication line.			Continues	error is detected		miswiring.
	Central controller			(Central controller side detected.)						→ There should be only 1 adapter on the
99								A		network.
			—						1.	Check communication wire / miswiring
									2.	Check communication (U3, U4 terminals)
			∗ 3	Communication circuit error of central
							Continues	Displayed when	3. Check network adapter P.C. board.
				control system
						(By remote controller)		error is detected	4.	Check central controller (such as central
	Central controller			(Detected by central controller side)
97										control remote controller, etc.)
									5.	Check terminal resistance. (TCC-LINK)
			—	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)
67

∗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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