Toshiba RAV-GM1601AT8P-E Service Manual page 73

Check Outdoor
code LED display
[P22]
Check and troubleshooting
(Item without special mention Indicates part of outdoor unit.)
[Outdoor Fan Motor (Upper side) error]
Is AC mains voltage correct?
(AC342 to 457V)
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
Between white and black lead wire : 12 to 20Ω
Between black and red lead wire
YES
Is the power device on P.C.board
screwed without looseness?
(IC300 of MCC-1626)
Are radiation grease properly applied?
(IC300 of MCC-1626)
YES
Does something block the
ventilation around the heat sink?
Does something block air flow
from the fan ?
YES
Check outdoor P.C.Board.
Defect → Replace
[Outdoor Fan Motor (Lower side) error]
Is AC mains voltage correct?
(AC342 to 457V)
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
Between white and black lead wire : 12 to 20Ω
Between black and red lead wire
YES
Is the power device on P.C.board
screwed without looseness?
(IC350 of MCC-1603)
Are radiation grease properly applied?
(IC350 of MCC-1603)
YES
Does something block the
ventilation around the heat sink?
Does something block air flow
from the fan ?
YES
Check outdoor P.C.Board.
Defect → Replace
- 73 -
NO
Check wiring construction.
Ask repair of power supply.
NO
Replace fan motor
: 12 to 20Ω
: 12 to 20Ω
Apply radiation grease to
NO
objective parts.
Retightening of screws.
YES
Remove blocking matter.
Correct short-circuit.
NO
Check wiring construction.
Ask repair of power supply.
NO
Replace fan motor
: 12 to 20Ω
: 12 to 20Ω
Apply radiation grease to
NO
objective parts.
Retightening of screws.
YES
Remove blocking matter.
Correct short-circuit.