Toshiba RAS-M10NKV-E Service Manual page 38

Block distinction
Check Check
Block
code code
Outdoor P.C.
board
Not
displayed
Outdoor P.C.
board
Others
(including
compressor)
Operation of diagnosis function
Cause of operation conditioner
status
Inverter over-current All off
protective circuit operates.
(Short time)
Position-detect circuit All off
error or short-circuit
between windings of
compressor
Current-detect circuit All off
error
Being out of place, All off
disconnection or short-
circuit of outdoor temp.
sensor
Disconnection or short- All off
circuit of discharge temp.
sensor
Outdoor fan drive system All off
error
Outdoor temp. sensor Operation
error continues.
Compressor drive output All off
error, Compressor error
(lock, missing, etc.),
Break down
Error exclusive for All off
multiple type
Compressor does not All off
rotate. (Current protective
circuit does not operate
when a specified time
passed after compressor
had been activated.)
Discharge temp. ex- All off
ceeded 120°C.
Break down of All off
compressor
– 37 –
Air
Remarkes
Displayed when Even if trying operation again, all
error is detected. operations stop immediately. : Replace
P .C. board.
Displayed when 1. Even if connecting lead wire of
error is detected. 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.
Displayed when Even if trying operation again, all
error is detected. operations stop immediately. : Replace
P .C. board.
Displayed when Check 5-serial LED.
error is detected. 1. Check P.C. board.
Displayed when 1. Check discharge temp. sensor (TD).
error is detected.
2. Check P.C. board.
Displayed when Position-detect error, over-current
error is detected. 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.
Displayed when Check 5-serial LED.
error is detected. When 20 seconds passed after start-up,
position-detect circuit error occurred. :
Replace compressor.
Displayed when Check 5-serial LED.
error is detected. 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
Displayed when 1. Trouble on compressor
2. Trouble on wiring of compressor
error is detected.
(Missed phase)
1. Check dischage temp. sensor (TD).
Displayed when
error is detected. 2. Degassing
3. Trouble on P.M.V.
1. Check power voltage.
Displayed when
error is detected. (220–240 V ±10%)
2. Overload operation of refrigeration
cycle
Check installation condition
(Short-circuit of outdoor diffuser).
FILE NO. SVM-05019
Judgment and action