I have a Glow worm combi boiler and if i have not used the heating for a day (approx) the overflow runs constantly until i put the heating on for a few hours then the overflow stops. Help please.
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Overflow on a combi boiler
- Thread starter scottkent
- Start date
filling loop letting by slowly and when heating goes on expansion vessel on combi faulty discharges water from prv letting pressure go down.then system starts filling up again due to filling loop letting by when pressure reaches 3 bar prv leaks
what boiler and what are your pressure gauge readings before and after ch go on/off
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