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An old Wickes Combi102 the boiler not firing. Flow chart in manual states "is there 230v across fan if not Replace fan".Is ths right surely you need 230v for fan to run?

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It sounds like this is a typographical error to me, too. I would think:...if not, replace fan switch. (so you can get 230 v across fan).
Do you have 230 v across fan? If not, is the fan switch or relay closing?
Is there 230 v supplying the fan switch or relay?

Posted on Jan 02, 2011

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You stated, "when boiler is on", so I am wondering how you get the boiler on. If your boiler is controlled by a thermostat, you need to check it for a cold draft possibly from behind the thermostat in the wall where the wires come through. The thermostat should never be on an outside wall. The thermostat could be defective.

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YOU CAN ONLY WORK ON BOILER IF YOU ARE GAS SAFE REGISTERED.

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