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boiler not staying on?

My worcester cdi 40 keeps flashing F7. How can I turn on my boiler and stop it keep shutting off

Danny
November 2013
WorcesterHeating, Home Heating SystemsBoiler Not Staying
igniton control flashes 2 time, flame no call for heat

Steve
November 2013
refer to manual F7 check electrode clean with steel wool
may be carbon on flame detected or dry joints on PCB

ltd
November 2013
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Free repair help for Worcester home heating systems
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Worcester Bosch Greenstar ri 24kw?
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Worcester boiler dripping water?
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Worcester botch combi boiler?
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Boiler not working?
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How can i sort?
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How can I fix this problem?
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Worcester boiler problem?
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Reset my worcester dt10rf programmer?
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Worcester Bosch 532/i Combi Boiler?
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Worcester green Star?
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Worcester greenstar 25si compact?
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How do I rectify aU9 Code?

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Worcester 240Worcester 24iWorcester 25siWorcester 28siWorcester 35cdiWorcester GreenstarWorcester Greenstar

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Worcester boiler dripping water?

Worcester boiler dripping water, can I just tight the screw? The icon next to the valve looks like radiators... [Read more]
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Vaillant ecotec 831 plus?

Following a F22 fault where we had no heating and only cold water from the hot water tap, I topped up the syst... [Read more]
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Remove boiler cover?

how can i remove the front cover of my ideal logic boiler?
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Siemens RDJ10RF thermostat problem?

My temp is showing on the reciever alot higher than it actually is & each time I turn the temp up to get the h... [Read more]
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Boiler cycle?

My boiler only fires up for about 90 seconds greenstar 4000
Mend Home Heating Systems
Mend Heating, Home Heating Systems
Free repair help for Worcester home heating systems