Toshiba RAS-M10YKV-E Service Manual page 52

10-4. Self-Diagnosis by Remote Control (Check Code)
(1) The self-diagnosis by the check code is performed while items B to E blocks are displayed.
(2) When turning the operation mode on the remote control to the service mode, and operating the remote
control, the controller of the indoor unit can self-diagnose operation of the protection circuit by displayed
contents (check code) on the remote control, by whether all the lamps flash (5Hz) and the receiving sound
(Pi, Pi, Pi ... for 10 seconds) is heard. The timer lamp usually flashes (5Hz) during self-diagnosis.
10-4-1. Self-Diagnosis
MODE TEMP.
AUTO
COOL
B
DRY
˚C
Hr.ON OFF TIMER
FAN ONLY
TEMP.
START/STOP
AUTO SET FAN
MODE ECONO.
ACL CHK
TIMER
ON OFF RSV CNL
Alphanumeric characters are
used for the check codes.
is 5. is 6.
is A. is B.
is C. is D.
10-4-2. Operation Control by Rated Frequency in Service Mode
In the service mode, pushing "ON" or "OFF" operates the air conditioner by rated frequency of COOL or HEAT
mode for 30 minutes. (Cooling function operates under condition of room temperature by 24°C or more while
heating function by 23°C or less, respectively.)
1
E
ACL CHK
TIMER
2
FAN
AUTO
LOW
MED.
HIGH
3
Push the CHK button by something with thin edge.
• Check is displayed in the indication
part of the remote control.
Push toward the remote control one by one.
If it is normal, the receiving sound "Pi" is heard
every pushing it and check code in the indication
part of the remote control changes.
The timer lamp of the air conditioner flashes.
(5 times for 1 second)
• Check all of 35 check codes (
• Push to return to the objective code if passed.
If a trouble occurs, the receiving sound "Pi"
changes to Pi, Pi, Pi (continues for approx.
10 seconds).
Check the check code in the indication part
of the remote control.
• 2-digits alphanumeric characters are displayed in the
indication part of the remote control.
• All the lamps of the air conditioner flash
(5 times for 1 second).
To release the self-diagnosis function, push
button.
• Display returns to one before check.
Fig. 10-4-1
– 52 –
to ).
START/STOP