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Andrew Smith
Andrew Smith, Home Appliance Technician
Category: Appliance
Satisfied Customers: 3589
Experience:  Gas cooker specialist
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I have a problem with my glow worm boiler. It was not working

Resolved Question:

I have a problem with my glow worm boiler. It was not working at all the engineer came out and fixed the pcb as it was fusing. But it still wont work..if I fill it up its fine but after a few hrs the heating will go off if I use the hot water tap it goes off quicker.but once I fill it up its fine again... any idea whats wrong please ive been told its the expansion belt
Submitted: 11 months ago.
Category: Appliance
Expert:  Andrew Smith replied 11 months ago.
The expansion vessel or the PRV?Are you losing water through the 15mm copper pipe through the outside wall?
Customer: replied 11 months ago.
I don't know its raining out so can't tell
Expert:  Andrew Smith replied 11 months ago.
Can you put a bag over it and tape it on, or a balloon?
You will know by the morning if you refill and run again.
Customer: replied 11 months ago.
Would a dripping hot water tap cause the problem
Expert:  Andrew Smith replied 11 months ago.
No, the heating system is a sealed system.Two ways out, a leak or the PRV - lets rule one out first before we check under all your floors.
Customer: replied 11 months ago.
Just checked the copper pipe outside and it is leaking
Expert:  Andrew Smith replied 11 months ago.
Ok, good in a way as you don't have to rip all your floorboards up!You need a new PRV fitting to your boiler - it should cost about £25 to buy plus fitting.
Customer: replied 11 months ago.
OK thanks let's hope that solves the problem
Expert:  Andrew Smith replied 11 months ago.
It will, it is supposed to hold up to 3 bar
Customer: replied 11 months ago.
The pressure goes up to 7.4 when the heating is on
Expert:  Andrew Smith replied 11 months ago.
OK, 2 things then.Get you expansion vessel checked, either reinflated or replaced.Also it will have damaged the PRV so it will need replacing also.
Customer: replied 11 months ago.
Just had it reinflated it was 0.2 inflated it to 0.5 see what happens thanks

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