Hi. Boiler's been working fine for over a year. Pop out for half an hour - get back and find the pilot light won't function and system pressure has dropped to zero. Re-establish pressure but pilot still won't light and lockout switch doesn't seem to make any difference. Pressure is slowly slipping back to zero. Any tips gratefully received.
Vaillant combi: Suddenly no pilot light
- Thread starter LouW
- Start date
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