Toshiba RAS-M10U2MUVG-E Service Manual page 52

B o l c k i d t s n i t c o i n
Check Check
Block
code code
Others
(including
compressor)
O p r e t a o i n f o d a i g n o s s i
Air
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
– 52 –
u f n t c o i n
Remarks
Flashes when 1. Repeat Start and Stop with interval of
trouble is
detected on
return serial
signal, and
normal status
2. Unit operates normally during check.
when signal is
reset.
Displayed when 1. Trouble on compressor
trouble is detected.
2. Trouble on wiring of compressor
Displayed when 1. Check dischage temp. sensor (TD).
trouble is detected.
2. Gas leakage
3. Trouble on P.M.V.
Displayed when 1. Check power voltage.
trouble is detected.
2. Overload operation of refrigeration
Judgment and action
approx. 10 to 40 minutes. (Code is
not displayed during operation.)
Supply gas.
(Check also gas leak).
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)
(220–230–240 V +10%)
cycle
Check installation condition
(Short-circuit of outdoor diffuser).