Toshiba RAS-M16PKVP-E Service Manual page 107

Check Outdoor
code LED display
[18]
lll l
¡¡
l l l
¡ ¡¡
ll ll
¡¡
[19]
l ll
¡¡¡
[1A]
llll l
¡
[1B]
(Item without special mention indicates part of outdoor unit.)
There is a possibility that it is one of the following errors.
Confirm LED on outdoor P .C. board to judge which error it is.
Heat exchanger temp. sensor (TE) error, Suction temp. sensor (TS) error
[Suction temp. sensor (TS) error]
Is connection of CN603
on P.C.B MCC-5071 correct?
Is resistance value of TS sensor correct?
YES
[Heat exchanger temp. sensor (TE) error]
Is connection of CN601
on P.C.B MCC-5071 correct?
Is resistance value of TE sensor correct?
YES
[Discharge temp. sensor (TD) error]
Is connection of CN600
on P.C.B MCC-5071 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-5071 correct?
Is resistance value of TO sensor correct?
YES
– 107 –
Check and troubleshooting
NO
NO
NO
NO
NO
NO
Correct connector.
Sensor error → Replace.
Check outdoor P.C.B MCC-5071
Defect → Replace.
Correct connector.
Sensor error → Replace.
Check outdoor P.C.B MCC-5071
Defect → Replace.
Correct connector.
Sensor error → Replace.
Check outdoor P.C.B MCC-5071
Defect → Replace.
Check wiring construction.
Ask repair of power supply.
Check outdoor P.C.B MCC-1571
Defect → Replace.
Correct connector.
Sensor error → Replace.
Check outdoor P.C.B MCC-5071
Defect → Replace.