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hot water but central heating not working. Worcester combi 2

https://forums.diydoctor.org.uk/viewtopic.php?f=187&t=7695

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hot water but central heating not working. Worcester combi 2

Posted: Wed Jan 09, 2008 8:18 am
by richard101
I have a Worcester 24i combi boiler. Hot water is working normally but central heating won't switch on. There's a slight clicking noise, it's as if there is no spark to egnite gas.
Please help.
Thanks Richard

Posted: Thu Jan 10, 2008 4:54 pm
by htg engineer
If it's sparking to light the gas when the hot water is on, then the ignition is ok.

Is the room thermostat and programmer calling for heat ?
Does the pump run ?
Does the fan run ?

Follow the sequence diagram in your boiler manual. It will lead you to find what part is faulty.
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