Toshiba HWT-601XWHT6W-E - Page 135

134
[P22] [Fan system trouble]
[P26] [Short-circuit of compressor drive element]
[P29] [Compressor motor position detection circuit trouble]
Check code
Outdoor LED
indication
Check and Action procedure
(No specific description indicates outdoor unit parts.)
NO
Replace fan motor
Replace fuse
Check wiring construction
Ask repair of power supply
Check outdoor control board
If defective, replace it
Power voltage is normal
AC220 - 240 V±10%
NO
Is not the fuse (near the terminal block)
blows?
NO
YES
YES
YES
Rotate shaft of the fan motor by hands
during power-OFF. Can it rotate smoothly?
Is coil resistance of fan motor correct?
Between red and white lead wire: 12 to 20 Ω
Between white and black lead wire: 12 to 20 Ω
Between black and red lead wire: 12 to 20 Ω
[Single operation check for outdoor fan]
A single operation of the outdoor fan can be confirmed by handling the service
switches SW01 and SW02. Use this method to check whether there is trouble
on the fan or not.
[Method of operation]
1) Confirm D800 to D804 are off (or rapidly flashing) and that D805 is lit up.
If D800 to D804 are slowly flashing or D805 is flashing then please
push and hold down SW01 and SW02 at the same time for at least 5 seconds.
D800 to D804 will turn off (or rapidly flash) and D805 turn on.
2)
Push and hold down SW 800 for at least 5 seconds. D804 will start slowly flashing.
3) Push SW01 until reaching the below [Forced fan motor operation] LED indication.
4) Push SW02 until D805 starts rapidly flashing.
5) Push and hold down SW02 for at least 5 seconds. D804 will start slowly
flashing, D805 will turn on, and the fan rotates.
6) Push and hold down SW01 and SW02 at the same time for at least
5 seconds or wait 2 minutes to return to normal control.
D800
Forced fan motor operation
D801 D802 D803 D804
: Off : Light : Flash (5 times/sec)
PC board
<401, 601> MCC-1768
<801, 1101> MCC-1705
Compressor check
(rare short circuit, etc.)
If defective, replace it
The connection between compressor
lead and reactor is correct
(Check with wiring diagram)
No
Yes
Yes
Correct wiring
Replace outdoor board
<401, 601> MCC-1768
<801, 1101> MCC-1705
No
Does the same error occur in
operation without compressor lead?
Check outdoor control board
If defective, replace it
PC board
<401, 601> MCC-1768
<801, 1101> MCC-1705