1. Unclip the HMI by hand then remove it from its support: pull firmly on
the slots at the bottom of the HMI.
2. Press the red button RESET on the boiler for 1 second using a
pointed object.
3. Clip the HMI back onto its support.
12.2 Automatic error code clearing
If the symbol is displayed at the same time as the error code, the error
code is automatically cleared when the cause that prompted it stops.
A flow or return temperature in excess of the critical value prompts an
error code. The error code is automatically cleared when the temperature
drops below the critical value.
12.3 Clearing error codes
If the probable cause of an error code is resolved but the error code
continues to be displayed, proceed as follows to clear the error code:
1. Press the button.
The command Reset? Yes is displayed on the control panel.
2. Confirm by pressing the button.
The error code disappears after a few seconds.
Fig.196
1
MW-4000273-2
Fig.197
MW-4000274-2
1"
2
Fig.198
MW-4000275-2
3
12 Troubleshooting
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