Toshiba RAS-10YAV-E Judgment of Trouble by Every Symptom, Indoor Unit Including Remote Controller

10-5. Judgment of Trouble by Every Symptom
10-5-1. Indoor Unit (Including Remote Controller)
(1) Power is not turned on (Does not operate entirely)					Operation
					Check Item
	Turn off the power supply				Considerable main cause
	once, and turn on it again
	after 5 seconds passed.				Measures
NO	Does the operation				Item by symptom
	lamp flash?
	YES
	Is the power supply	NO	Does send display	NO
	turned on by pressing		of remote controller flash		Remote controller
	[START/STOP] button		normally, and is the signal		error
	on remote controller?		sent securely?

						YES
									(No trouble)
	Is fuse of indoor control			YES			Parts (R21, R109, SG01,
	board blown? (F01)							C15, C01, DB01, C02,
							IC01, T01) are defective.
			NO
	Is temp. fuse blown?			YES			Connection of connecting
									wire is defective.
			NO
	Is voltage indicated				YES
NO on rear of indoor control
	board (DC12V or 5V)
		normal?
Is DC310 to 340V		NO
applied to primary			To item of Pre-check or
side of SW trans.			trouble before power board
(T01) applied?
Is DC35V,									Is DC35V,
		NO	Turn “OFF” breaker
DC12V, DC7V									DC12V, DC7V
applied to secondary			once, and “ON”						applied to secondary
			again after removing
side of SW trans.									side of SW trans.
			motor.
(T01) applied?									(T01) applied?
	YES								YES

YES

Microcomputer is defective.

SW trans.,

IC (IC01) for power supply, ] or fan motor

Refer to the item of Remote controller check. (p.49)

Replace temp. fuse set.

Check connecting wire.

Replace main board.

Motor is defective.

•Be sure to disconnect the motor connector CN10 after shut off the power supply, or it will be a cause of damage of the motor.

(2) Power is not turned on though Indoor P.C. board is replaced

<Confirmation procedure>

Turn on power supply.

		NO	Is wired correctly to white and black		NO
Does operation lamp flash?
			lead wires of terminal block?
	YES			YES

Correct wiring.

To item of “Power supply is not turned on”.

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