Toshiba RAS-2M21U2ACVG-SG Service Manual page 71

Check Outdoor
code LED display
* * 
[19]
* * 
[1A]
[1b] * **
:ON ( *:3 sec ON / 0.5 sec OFF) :OFF
(Item without special mention indicates part of outdoor unit.)
[Discharge temp. sensor (TD) error]
Is connection of CN600
on P.C.B MCC-1665 correct?
Is resistance value of TD sensor correct?
YES
[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 :12 to 20Ω.
Between white and black lead wire :12 to 20Ω.
Between black and red lead wire :12 to 20Ω.
NO
Replace fan motor.
[Outside temp. sensor (TO) error]
Is connection of CN602
on P.C.B MCC-1665 correct?
Is resistance value of TO sensor correct?
YES
- 71 -
Check and troubleshooting
NO
NO
NO
NO
Correct connector.
Sensor error → Replace.
Check outdoor P.C.B MCC-1665
Defect → Replace.
Check wiring construction.
Ask repair of power supply.
Check outdoor P.C.B MCC-1645
Defect → Replace.
Correct connector.
Sensor error → Replace.
Check outdoor P.C.B MCC-1665
Defect → Replace.