Heating Operation; Troubleshooting - Toshiba Carrier MMD-AP0481HF2UL Manuel Du Propriétaire

3
Select the operation mode with
• Do not run the air conditioner in a mode other than [
• The temperature controlling function does not work during test run.
• The detection of trouble is performed as usual.
4
After the test run, push button to stop a test run.
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(Display part is same as procedure .)
5
Push button to cancel (release from) the test run mode.
([TEST] disappears on the display and the status returns to a normal.)
◆ Requirements for turning thermostat OFF
Cooling operation
• When the outside air temperature is lower than or equal to 66.2 °F (19 °C).
• When the outside air temperature is lower than or equal to 37 °F (3 °C) above the set temperature.

Heating operation

• When the outside air temperature is lower than or equal to 23 °F (-5 °C).
• When the outside air temperature is higher than or equal to 59 °F (15 °C).
• When the outside air temperature is higher than or equal to 37 °F (3 °C) above the set temperature.
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button, [ Cool] or [ Heat].
Cool] or [ Heat].
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Troubleshooting

 Confirmation and check
When a problem occurred in the air conditioner, check code and indoor UNIT No. appear on the display part of the
remote control.
The check code is only displayed during the operation.
If the display disappears, operate the air conditioner according to the following "Confirmation of check code log" for
confirmation.
Check code
 Confirmation of check code log
When a problem occurred on the air conditioner, the check code log can be confirmed with the following procedure.
(The check code log is stored in memory up to 4 check code.)
The log can be confirmed from both operating status and stop status.
2
3
1
When and buttons are pushed simultaneously for 4 seconds or more, the following display
appears.
If is displayed, the mode enters in the check code log mode.
• [01: Order of check code log] is displayed in CODE No.
• [Check code] is displayed in CHECK.
• [Indoor unit address in which a problem occurred] is displayed in Unit No.
2
Every pushing of button used to set temperature, the check code 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 check code log of the indoor unit will be deleted.
3
After confirmation, push button to return to the usual display.
– 16 –
Indoor UNIT No. in which
a problem occurred
1
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