Toshiba RAS-M10PKVP-E Service Manual page 101

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 the outdoor
heat exchanger sensor
(TE) or suction temp.
sensor (TS)
Disconnection or short- All off
circuit of discharge temp.
sensor
Outdoor fan drive system All off
error
Being out of place, Operation
disconnection or short- continues
circuit of the outdoor
temp. sensor (TO)
Compressor drive output All off
error, Compressor error
(lock, missing, etc.),
Break down
Return serial signal has Operation
been sent when continues
operation started, but it
is not sent from halfway.
1) Compressor thermo.
operation
Gas shortage
Gas leak
2) Instantaneous power
failure
Compressor does not All off
rotate.
(Current protective
circuit does not operate
when a specified time
passed after compressor
had been activated.)
Discharge temp. All off
exceeded 117°C
Break down of All off
compressor
4-way valve inverse error Operation
(TC sensor value lowered continues
during heating operation.)
– 101 –
Air
Remarks
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.
2. Measure resistance between
Displayed when Even if trying operation again, all
error is detected. operations stop immediately. :
Replace P .C. board.
Displayed when 1. Check sensors (TE, TS).
error is detected.
2. Check P .C. board.
Displayed when 1. Check discharge temp. sensor
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
——
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.
Trouble on P .M.V.
Flashes when 1. Repeat Start and Stop with
trouble is detected
on return serial
signal, and normal
status when signal
is reset.
2. Unit operates normally during
Displayed when 1. Trouble on compressor
error is detected.
2. Trouble on wiring of compressor
Displayed when 1. Check dischage temp. sensor
error is detected.
2. Gas leakage
3. Trouble on P .M.V.
Displayed when 1. Check power voltage.
error is detected.
2. Overload operation of refrigera-
1. Check 4-way valve operation.
——
Judgment and action
compressor is removed, position-
detect circuit error occurred. :
Replace P .C. board.
wires of compressor, and
perform short-circuit. :
Replace compressor.
(TD).
(TO).
interval of approx. 10 to 40
minutes. (Code is not displayed
during operation.)
Supply gas. (Check also gas leak).
check.
If return serial signal does not
stop between indoor terminal
block 2 and 3, replace inverter
P.C. board.
If signal stops between indoor
terminal block 2 and 3, replace
indoor P.C. board.
(Missed phase)
(TD).
(220–230–240 V +10%)
tion cycle
Check installation condition
(Short-circuit of outdoor diffuser).