Advice needed on boiler please

krill

I have a Ravenheat boiler model CSI 85 A, the water works fine with continuous flame but when the heating is on the the boiler ignites then cuts out cycling about every 20 seconds or less, the radiators all get hot and there's no air in the system, can anyone advise or guide me to what to check first please
Any help would be much appreciated

dlm4473

I would guess your looking at a fault with the CH thermistor(approx £20) - but unless you KNOW what your doing or are justifiably confident you can check and replace such things - leave it to the professionals ! Apart from the safety aspects- you can very easily turn a quick and simple repair into an expensive and time consuming mistake.

I would recommend that you contact Raven heat and arrange a fixed price repair.

gas4you

Fan modulation board is faulty.

krill

gas4you wrote: »

Fan modulation board is faulty.

Thanks for the answers, how sure are you about the modulation board?

gas4you

This is one of the commonest faults with this boiler, but as I have not seen it I cannot be 100% certain.

I would also suggest calling Ravenheat. They should be able to confirm or not.