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Mend Vaillant 242 EB Combi Home Heating Systems

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Mend Vaillant 242 EB Combi Boiler Ignition

Vaillant boiler won't stay 'on'?

My Vaillant CH boiler 242 EB Combi - LPG fuel from 2x87kg cylinders
Refuses to stay on; when the heating is on and I run the HW tap it clicks off immediately (red light next to ignition button comes on). It's driving me mad as the boiler is in the loft in our small cottage and I have to keep traipsing up there to switch it on again. The heat exchanger and gas outlets in the burners have been cleaned recently and all pressures are fine. Any suggestions, PLEASE!!!

Peter A Davis
February 2014
VaillantVaillant 242 EB CombiHeating, Home Heating SystemsBoiler Combi Boiler Ignition
A possible solution, it's not the boiler but the supply. The boiler running ch generally runs a a lower rate of gas consumption, when the hw is called for that rate ramps up significantly due to the 'instant' requirement for hw.
I can only suggest you check the supply bottles, tubes, changeover valve and governors are correct before condemning the boiler.

Carefree
February 2014

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