Toshiba MMK-UP0051DHPL-E(TR) Service Manual page 70

<RBC-ASCU11- >
(1) 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.
(2) 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 [
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
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.
3
• If the air conditioner is operating, it remains operated
even after the ON/OFF button has been pushed.
To stop its operation, push the ON/OFF button again.
How to read displayed information
<7-segment display symbols>
0 1
23456789AbCdEFHJLP
<Corresponding alphanumerical letters>
0 1 2 3
Check code
Description of operation
Service check] is displayed, the
4 5 6 7 8 9 A b C d E F
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The indoor Unit No. in which
the problem occurred.
1 2 3
H J L P