Toshiba RAV-SM304SDT-TR Service Manual page 111

Check Outdoor
code LED display
[P22] <Display 1> <Display 2>
[P26] <Display 1> <Display 2>
[P29] <Display 1> <Display 2>
— <Display 1> <Display 2>
No code
(Item without special mention Indicates part of outdoor unit.)
[Fan system error]
Is AC mains voltage correct?
(198 to 264V)
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
NO
Replace fan motor.
Single operation check for outdoor fan
1) Set Dip switch of SW804 as the following figure and then push SW801 for
approx. 1 second to check single operation of outdoor fan.
Use this method to check which fan, upper or lower fan, has a trouble.
• When SW801 is pushed for 1 second
again or 2 minutes passed, the fan stops.
2) After check, turn off all Dip switch of
SW804.
[Short-circuit of compressor drive element]
Are connections of
compressor lead and reactor correct?
(Check referring to the Wiring diagram.)
YES
Does the same error occur in
operation without compressor lead?
NO
Check compressor. (Rear short, etc.)
Defect → Replace
[Position detection circuit error]
Check outdoor P.C. board.
Defect → Replace
[Other error] Compressor disorder due to sudden change of load, etc.
∗ Although the display of outdoor LED outputs, the unit automatically restarts
and error is not determined.
∗ LED display also may output due to wire coming-off of compressor.
– 111 –
Check and troubleshooting
NO
: 12 to 20Ω
: 12 to 20Ω
Outdoor fan single operation
NO
YES
<In case of SP80>
Check wiring construction.
Ask repair of power supply.
YES
Check outdoor P.C. board.
Defect → Replace
SW804 SW801
Push
Correct wiring.
Replace outdoor P.C. board.