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?

 

 

3. Is the crossover cable connected properly?

 

 

Operation

4. Is the fuse (F01) blown?

 

 

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 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

NO

Does OPERATION indicator flash?

 

 

 

black lead wires of terminal block?

 

 

 

 

 

 

YES

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

Correct wiring.

To item of

“Power supply is not turned on”.

– 67 –

Page 66 Page 68
Page 67
Image 67
Toshiba RAS-B13GKVP-E, RAS-B16GKVP-E Judgment of Trouble by Every Symptom, Indoor Unit Including Remote Controller
Page 66 Page 68

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