Toshiba ras-m16g3dv-e Service Manual page 67

Block distinction
Check Check
Block
code code
Others
(including
compressor)
Operation of diagnosis function
Cause of operation conditioner
status
Return serial signal Operation
has 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
– 66 –
Air
Remarks
Flashes when
trouble is
detected on
return serial
signal, and
normal status
when signal is
reset.
Displayed when
error is detected.
Displayed when
error is detected.
Displayed when
error is detected.
Judgment and action
1. Repeat Start and Stop with interval of
approx. 10 to 40 minutes. (Code is
not displayed during operation.)
Supply gas.
(Check also gas leak).
2. Unit operates normally during 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.
1. Trouble on compressor
2. Trouble on wiring of compressor
(Missed phase)
1. Check dischage temp. sensor (TD).
2. Gas leakage
3. Trouble on P.M.V.
1. Check power voltage.
(220–230–240 V +10%)
2. Overload operation of refrigeration
cycle
Check installation condition
(Short-circuit of outdoor diffuser).