Troubleshooting - Toshiba MMD-AP0071SH-C Service Manual

10
TEST RUN
In case of wireless remote controller
Procedure
Remove a small screw which fixes the nameplate of the receiver unit.
1
Remove the nameplate of the sensor section by inserting a minus screwdriver, etc into the notch at the bottom
of the plate, and set the Dip switch to [TEST RUN ON].
Execute a test operation with button on the wireless remote controller.
• , , and LED flash during test operation.
2
• Under status of [TEST RUN ON], the temperature adjustment from the wireless remote controller is invalid.
Do not use this method in the operation other than test operation because the equipment is damaged.
Use either COOL or HEAT operation mode for a test operation.
3
* The outdoor unit does not operate approx. 3 minutes after power-ON and operation stop.
After the test operation finished, stop the air conditioner from the wireless remote controller, and return Dip
switch of the receiver section as before.
4
(A 60-minutes timer clearing function is attached to the receiver section in order to prevent a continuous test
operation.)
Receiver unit
M4 × 25 screw
(2 pieces)
Nameplate
Notch
Small screw
Description
Spacer
11

TROUBLESHOOTING

Confirmation and check
When a trouble occurred in the air conditioner, the
check code and the indoor unit No. appear on the
display part of the remote controller.
The check code is only displayed during the operation.
If the display disappears, operate the air conditioner
according to the following "Confirmation of error
history" for confirmation.
Confirmation of error history
When a trouble occurred on the air conditioner, the
error history can be confirmed with the following
procedure.
(The error history is stored in memory up to 4 errors.)
This history can be confirmed from either operating
status or stop status.
Procedure
SET TEST
When pushing and buttons simultaneously for 4 seconds or
more, the right display appears.
If [Service Check] is displayed, the mode enters in the error history
mode.
1
• [01: Order of error history] is displayed in CODE No. window.
• [Check Code] is displayed in CHECK window.
• [Indoor unit address in which an error occurred] is displayed in
UNIT No.
Every pushing , buttons, the error history stored in the memory is displayed in order.
The numbers in CODE No. indicates CODE No. [01] (Latest) → [04] (Oldest).
2
CAUTION
CL
Do not push button because all the error history of the indoor unit will be deleted.
3
TEST
After confirmation, push button to return to the usual display.
CODE No.
UNIT No.
R.C. No.
Check code Indoor unit No. in which
an error occurred
TEMP. ON / OFF
2
TIMER SET FAN MODE
TIME SWING/FIX VENT
FILTER
RESET TEST SET CL UNIT
3
Description
CODE No.
UNIT No.
R.C. No.
1