Troubleshooting - Toshiba MMK-AP0074MH-E Service Manual

SMMS High-Wall Type
4
After the test run, push button to
stop a test run.
(Display part is same as procedure 1.)
5
Push button to cancel (release from) the
test run mode.
([TEST] disappears on the display and the status
returns to a normal.)
31-EN
Installation Manual
Wireless remote controller (Forced test
operation is performed in a different
way.)
REQUIREMENT
• For the operation procedure, follow the Owner's
Manual.
• Finish the forced cooling operation in a short
time because it applies excessive strength to
the air conditioner.
• A test operation of forced heating is
unavailable. Perform a test operation by heating
operation using the switches of the remote
controller.
However heating operation may be not carried
out according to the temperature conditions.
• Check wiring / piping of indoor and outdoor
units
1
When "TEMPORARY" button is pushed for
10 seconds or more, "Pi!" sound is heard
and the operation changes to a forced
cooling operation. After approx. 3 minutes,
a cooling operation starts forcedly.
Check cool air starts blowing. If the operation does
not start, check wiring again.
2
To stop a test operation, push
"TEMPORARY" button once again (Approx.
1 second).
The louver closes and the operation stops.
TEMPORARY button
• Check transmission of remote controller
1
Push "START / STOP" button of the remote
controller to check an operation can also
start by the remote controller.
• "Cooling" operation by the remote controller may
be unavailable according to the temperature
conditions.
Check wiring / piping of the indoor and outdoor
units in forced cooling operation.
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SMMS High-Wall Type
13.

Troubleshooting

A wired remote controller is necessary for this function. This function cannot be operate with a wireless
remote controller.
Confirmation and check
When an error 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 log" for confirmation.
Check code Indoor UNIT No. in which
an error occurred
Confirmation of error log
When an error occurred on the air conditioner, the
error log can be confirmed with the following
procedure. (The error log is stored in memory up to
4 errors.)
The log can be confirmed from both operating
status and stop status.
2
3
1
1
When and buttons are pushed
simultaneously for 4 seconds or more, the
following display appears.
If [Service check] is displayed, the mode enters in
the error log mode.
• [01: Order of error log] 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.
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Installation Manual
2
Every pushing of "TEMP." button
used to set temperature, the error log stored
in memory is displayed in order.
The numbers in CODE No. indicate CODE No. [01]
(latest) → [04] (oldest).
REQUIREMENT
Do not push button because all the error log of
the indoor unit will be deleted.
3
After confirmation, push button to
return to the usual display.
32-EN