Toshiba RAS-13UKV-E2, RAS-13UAV-E2 service manual Judgment of Trouble by Every Symptom, Check Item

FILE NO. SVM-03008

10-5. Judgment of Trouble by Every Symptom

10-5-1. Indoor unit (Including remote contro)

(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?

3.Is the crossover cable connected properly?

4.Is the fuse (F01) blown?

			Operation
			Check Item
			Considerable principle cause
Turn off power supply once, and			Measures
5 second later, turn it on again.
NO			Item by symptoms
Is OPERATION lamp flashing?
YES
Is it possible to turn on	NO	Does transmission mark	NO
power supply by pushing		on remote control flash
			Remote control is defective.
[START/STOP] button		normally, and is its signal
on remote control?		transmitted properly?

YES

YES

Refer to (5)

Troubleshooting

Unit operates normally.

for remote control .

Does fan

Is fuse (F01)

YES

YES

Parts (R01, R04, DB01, C01,

motor connector

of indoor control

C03, IC01 and T01) are defective.

between 1 and 2

board blown?

short-circuit?

NO

NO

Is voltage

NO

(DC12 V or 5 V)

YES

indicated on rear of

Microcomputer

Replace main

indoor control

is defective.

P.C. board

board normal?

Is DC310-340 V

NO

Refer to <Primary check>

supplied to

or this problem is one step

primary side of

short of power P.C. board block.

transfer switch?

YES

Are DC15 V, 12 V

NO

Are DC15 V, 12 V

NO

Transfer swith,

Turn off breaker once

IC (IC01) for

and 7 V supplied to

and 7 V supplied to

secondary side of

and turn it on again

secondary side of

power supply or

after removing motor.

fan motor is

transfer switch?

transfeor switch?

defective.

YES

YES

Replace 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.

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