Toshiba RAS-M10EKCVP-E, RAS-M13EKCVP-E, RAS-M18EACV-E Judgment of Trouble by Every Symptom

11-5. Judgment of Trouble by Every Symptom

11-5-1. Indoor Unit (Including Remote Controller)

(1) Power is not turned on (Does not operate entirely)

<Primary check>

1.	Is the supply voltage normal?
2.	Is the normal voltage provided to the outdoor unit?			Operation
3.	Is the crossover cable connected properly?			Check Item
4.	Is the fuse (F01) blown?			Considerable principle cause
	Turn off power supply once, and			Measures
	5 second later, turn it on again.
	NO			Item by symptoms
	Is OPERATION indicator flashing?
	YES
	Is it possible to turn on	NO	Does transmission mark	NO
	power supply by pushing		on remote controller flash
				Remote controller is defective.
	[START/STOP] button		normally,and is its signal
	on remote controller?		transmitted properly?

YES

YES

Refer to (5) “Troubleshooting

Unit operates normally.

for remote controller”.

Does fan

Is fuse (F01)

YES

YES

Parts (R04, R05, DB01, C01,

motor connector

of indoor control

board blown?

C03, IC01 and T01) are defective.

between CN10 1 –

3 short-circuit?

NO

NO

NO

Is voltage

YES

(DC12V or 5V)

indicated on rear of

Microcomputer

Replace main

indoor control

is defective.

P.C. board

board normal?

Is DC310–340V

NO

supplied between

Parts of a power supply circuit

CN10 1 – 3 ?

defective.

YES

Replace fan

motor.

•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 indicator flash?
			lead wires of terminal block?
	YES			YES

Correct wiring.

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

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