CH failure

ScottyG · 25 Feb 2006

Hi Hoping someone can offer some advice...

Have a Baxi WM382 boiler which seems to work okay (pilot light is on). Yesterday heard some disturbing clanking noises then realised the radiators were becoming cold. I bleed the pump to start with, then noticed it appeared to be jammed. I have now replaced the Grundos 15-50 pump and it appears to be working. Despite this the heating is not working and now I have noticed the water is not heating either. All pipes to and from the water cylinder are cold. There is still an occasional clanking noise usually along with some gurgling. Could it be as simple as a valve jammed or is it likely to be more involved job?

Any help aprreciated!

gas chap · 25 Feb 2006

is there water in the rads

ScottyG · 25 Feb 2006

I assume so they were working a couple of days ago and I have not removed any water. Could I have lost water anywhere?

gas chap · 25 Feb 2006

when you say valve jammed,

do you know what kind of valves you have?

ollski · 25 Feb 2006

Have you found the air bleed/s on the pipework and opened them up to get rid of the air?

ScottyG · 27 Feb 2006

Thanks for your responses...

Could an air lock cause both hot water and radiators to stop working?
Are there valves other than the ones on the rads and on the pump itself?
When I referred to jammed valves I was mainly thinking of the 3 position diverter valve near the pump. Could that cause this type of problem?

dal5band · 27 Feb 2006

1 Bleed one of the upstairs radiators to confirm there is water in the system.
Check you header tank and ball valve.

2 Can you open the 3way valve manually? (honeywell you can) -sometimes you need to do this to let the air through otherwise an air lock before the valve will stop everything. This depends on how your pipes run.

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CH failure

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