49
Type No. Fault Solution
ALL 98
SW error, board
start-up
- Contact the Technical
Assistance Centre
ALL 99 General board error
- Contact the Technical
Assistance Centre
- -
Frequent relief valve
intervention
- Check circuit pressure
- Check expansion vessel
- -
Limited production of
domestic hot water
- Check the diverter valve
- Check that plate heat
exchanger is clean
- Check domestic hot
water circuit valve
8.5.1 Maintenance request
When it is time to perform maintenance on the boiler, the
c
symbol shows on the display.
Contact the technical assistance service to organise the nec-
essary work.
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