Troubleshooting - Toshiba MMU-UP0091HP-E Installation Manual

11

Troubleshooting

Confirmation and check
■
If a problem occurs with the air
conditioner, the OFF timer indicator
alternately shows the check code and
the indoor Unit No. in which the
problem occurred.
Troubleshooting history and confirmation
■
You can check the troubleshooting history with the following procedure if a problem occurs with the air conditioner.
(The troubleshooting history records up to 4 incidents.)
You can check it during operation or when operation is stopped.
• If you check the troubleshooting history during OFF timer operation, the OFF timer will be canceled.
Procedure
Push the OFF timer button for over 10 seconds and
the indicators appear as an image indicating the
troubleshooting history mode has been entered.
If [ Service check] is displayed, the mode enters in
the troubleshooting history mode.
1
• [01: Order of troubleshooting history] appears in the
temperature indicator.
• The OFF timer indicator alternately shows the
[check code] and the [indoor Unit No. ] in which the
problem occurred.
Each time the setting button is pushed, the recorded
troubleshooting history is displayed in sequence.
The troubleshooting history appears in order from [01]
(newest) to [04] (oldest).
CAUTION
2
In the troubleshooting history mode, DO NOT
push the Menu button for over 10 seconds,
doing so deletes the entire troubleshooting
history of the indoor unit.
After you have finished checking, push the ON/OFF
button to return to the regular mode.
• If the air conditioner is operating, it remains
3
operated even after the ON/OFF button has been
pushed. To stop its operation, push the ON/OFF
button again.
43-EN
Check code The indoor Unit No. in which
the problem occurred.
Description of operation
1 2 3
– 22 –
EN
ID
ID
44-EN