Toshiba RAV-SM560BT-E, RAV-SM800AT-E Check Code Table, 118, Error mode detected by indoor unit

14-3. Check Code Table

Error mode detected by indoor unit (1)

Operation of diagnostic function

Block	Check		Status of air	Judgment and measures
		Cause of operation		Condition
display	code		conditioner

[MODE] [TIMER] lamp 5Hz flash

The serial signal is not output	Operation	Displayed when	1. Outdoor unit does not completely
from outdoor unit to indoor unit.	continues	error is detected	operate.
• Miscabling of inter-unit cables			• Inter-unit cable check, correction of
• Defective serial sending			miscabling
circuit on outdoor P.C. board			• Outdoor P.C. board check, P.C. board
• Defective serial receiving			cables check
circuit on outdoor P.C. board			• Compressor case thermo check
• Compressor case thermo			2. In normal operation
operation			When outdoor sending serial LED
			(Green) flashes, the receiving serial
			LED (Orange) also flashes. : Indoor
			P.C. board (Main P.C. board) check
			When the receiving serial LED
			(Orange) does not flash: Outdoor P.C.
			board check

BUS communication circuit error

*BUS communication was interrupted over the specified time.

Operation	Displayed when	1. Communication line check, miscabling
continues	error is detected	check
(According		Power supply check for central
to remote		controller (Central control remote
controller of		controller, etc.) and indoor unit
indoor unit)		2. Communication check (XY terminal)
		3. Indoor P.C. board check
		4. Central controller check
		(Communication P.C. board)

Network address miss-setting Operation		Displayed when	1. Check central control system network
• Addresses of central	continues	error is detected	address setting. (SW02)
controllers (Central control			2. Indoor P.C. board check
remote controller, etc.) are			3. Central controller check

duplicated. (Communication P.C. board)

Error in 4-way valve system

•Indoor heat exchanger temperature rise after start of cooling operation.

•Indoor heat exchanger temperature fall after start of heating operation.

Operation	Displayed when
continues	error is detected

1.Check 4-way valve.

2.Check 2-way valve and non-return valve.

3.Check indoor heat exchanger sensor (TC).

4.Check indoor P.C. board (Main P.C. board).

Error in other cycles

• Indoor heat exchanger temp (TC) does not vary after start of cooling/heating operation.

*

Operation	Displayed when
continues	error is detected

1.Compressor case thermo operation

2.Coming-off of detection part of indoor heat exchanger sensor

3.Check indoor heat exchanger sensor (TC).

4.Check indoor P.C. board (Main P.C. board).

[MODE] lamp	Coming-off, disconnection or	Operation	Displayed when	1. Check indoor temp sensor (TA).
5Hz flash	short of indoor temp sensor	continues	error is detected	2. Check indoor P.C. board (Main P.C.
	(TA)			board).
	Coming-off, disconnection or	Operation	Displayed when	1. Check indoor temp sensor (TC).
	short of indoor temp sensor	continues	error is detected	2. Check indoor P.C. board (Main P.C.
	(TC)			board).
	Coming-off, disconnection or	Operation	Displayed when	1. Check indoor temp sensor (TCJ).
	short of indoor temp sensor	continues	error is detected	2. Check indoor P.C. board (Main P.C.
	(TCJ)			board).

*: No display in the setting at shipment

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