Toshiba RAS-M10GDCV-E Service Manual page 46

Block distinction
Check
Block
code
Outdoor P .C.
board
Not dis-
played
Outdoor P .C.
board
Others
(including
compressor)
1 : For details, refer to the service manual of the outdoor unit to be combined.
*
Operation of diagnosis function
Check
Cause of operation
code
Inverter over-current
protective circuit operates.
(Short time)
Position-detect circuit error
or short-circuit between
windings of compressor
Current-detect circuit error
Being out of place,
disconnection or short-
circuit of outdoor temp.
sensor
Disconnection or short-
circuit of discharge temp.
sensor
Outdoor fan drive system
error
Outdoor temp. sensor error
Compressor drive output
error, Compressor error
(lock, missing, etc.), Break
down
Error exclusive for multiple
type
Compressor does not
rotate. (Current protective
circuit does not operate
when a specified time
passed after compressor
had been activated.)
Discharge temp. exceeded
120°C.
Break down of compressor
Air
conditioner Remarks
status
All off Displayed when
error is detected.
All off Displayed when
error is detected.
All off Displayed when
error is detected.
All off Displayed when
error is detected.
All off Displayed when
error is detected.
All off Displayed when
error is detected.
Operation
continues.
——
All off Displayed when
error is detected.
All off Displayed when
error is detected.
All off Displayed when
error is detected.
All off Displayed when
error is detected.
All off Displayed when
error is detected.
– 46 –
Judgment and action
Even if trying operation again, all
operations stop immediately. :
Replace P .C. board.
1. Even if connecting lead wire of
compressor is removed, position-
detect circuit error occurred. :
Replace P .C. board.
2. Measure resistance between wires
of compressor, and perform short-
circuit. : Replace compressor.
Even if trying operation again, all
operations stop immediately. : Replace
P .C. board.
*
Check 5-serial LED. 1
1. Check outdoor temp. sensors.
(TE, TS)
2. Check P.C. board.
1. Check discharge temp. sensor (TD).
2. Check P.C. board.
Position-detect error, over-current
protective operation of outdoor fan
drive system, fan lock, etc. : Replace
P.C. board or fan motor.
1. Check outdoor temp. sensor (TO).
2. Check P.C. board.
*
Check 5-serial LED. 1
When 20 seconds passed after start-
up, position-detect circuit error
occurred. : Replace compressor.
*
Check 5-serial LED. 1
1. Miswiring of connecting wire of A/B/
C/D rooms in indoor/outdoor units
2. Check gas leakage.
3. Check disconnection of sensor.
4. Electronic control valve error
1. Trouble on compressor
2. Trouble on wiring of compressor
(Missed phase)
1. Check dischage temp. sensor (TD).
2. Degassing
3. Trouble on P .M.V.
1. Check power voltage.
(50Hz / 220–240V ±10%,
60Hz / 220V ±10%)
2. Overload operation of refrigeration
cycle
Check installation condition
(Short-circuit of outdoor diffuser).