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by DavidM
Sat Feb 02, 2008 3:30 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: boiler cycleing every 30 secs
Replies: 5
Views: 4380

I had a similar problem with a potterton boiler and changed the temp stat with no effect. Mine was getting so hot it was firing boiling water into the loft expansion tank. It turned out that there was a valve in the airing cupboard that had been turned nearly off. This valve controlled the return fl...
by DavidM
Sun Oct 14, 2007 12:50 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Banging noises
Replies: 8
Views: 8520

Banging noises

DIY Doctor thanks for the post, I today changed the boiler thermostat but the problem still persists. When the boiler shuts down after the heat has been on for a while it bangs and whooshes and hot water squirts out in the expansion tank. I have a 23 year old glow-worm Fuelsaver F55, microbore Y pla...
by DavidM
Thu Oct 11, 2007 8:56 am
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Banging noises
Replies: 8
Views: 8520

Banging noises

I have a similar problem since replacing my motorised 3 way valve in the summer. The heating system makes a terrible noise and hot water is being vented into my expansion tank which is boiling hot and has melted the plastic lid. Like you this seems to happen when the TVR's stop calling for heat and ...
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