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Troubleshooting - Toshiba VN-M150HE Service Manual

Air to air heat exchanger concealed microcomputer control type
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14

Troubleshooting

Confirmation and check
When an error occurred in the Air to Air Heat
Exchanger, the check code and the unit No. of Air to Air
Heat Exchanger 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 to Air Heat
Exchanger according to the following "Confirmation of
error history" for confirmation.
* Unit No. of Air to Air Heat Exchanger is 31-OO.
Unit No. of the Air to Air Heat
Check code
Exchanger with a problem
Confirmation of error history
When an error occurred on the Air to Air Heat
Exchanger, the error history can be confirmed with the
following procedure. (The error history is stored in
memory up to 4 troubles.)
The error can be confirmed from both operating status
and stop status.
2
3
1
When pushing
same time for 4 seconds or more, the
following display appears.
If [Service check]
enters in the trouble history mode.
• [01: Order of error history] is displayed in CODE
No. window.
• [Check code] is displayed in CHECK window.
• [Air to Air Heat Exchanger address in which an
error occurred] is displayed in Unit No.
* Unit No. of Air to Air Heat Exchanger is 31-OO.
1
and
buttons at the
is displayed, the mode
2
Every pushing of
temperature, the error history stored in
memory is displayed in order.
The numbers in CODE No. indicate CODE No.
[01] (latest)
REQUIREMENT
Do not push
button because all the error history of
the Air to Air Heat Exchanger will be deleted.
3
After confirmation, push
to the usual display.
137
button used to set
[04] (oldest).
button to return

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