RAVENHEAT 820/20T FANNED COMBI

[ashtonvillageuk]

My normally reliable boiler has decided that it will no longer supply me with hot water or if I attempt to ignite the boiler via the CH wall thermostat, the boiler again will not ignite. The pilot light is burning bright. I replaced the PC board(incl relays) last year.

Any ideas of what might be causing the problem ?

Many thanks,

Steve

 

[Agile]

When was it last serviced?

Those problems are usually gas train related and it may need you to call a compentent gas engineer. Not all like this model so you should only call someone who knows the boiler and is prepared to repair it rather than just say it should be replaced.

Presumably the pressure is about 1.5 bar?

Tony

 

[ashtonvillageuk]

Hi Tony, thank you for the reply.....I have to admit the boiler has not been serviced for a number of years'......the pressure is approximately 1.5bar.

If there's an engineer out there who is familiar with this boiler and who won't rip me off please get in touch. I live near Northampton.

Many thanks,

Steve

 

[45yearsagasman]

You don't say if the fan or pump runs or not.On any demand the pump should run and the fan should go to high speed.

 

[ashtonvillageuk]

Yes, the fan does go to high speed and the pump runs, hope that helps !

 

[45yearsagasman]

You need to check for mains voltage at gas valve solenoid and if present then suspect the gas valve.If no voltage then suspect the air pressure switch.The tests required are best left to RGI's as combuston covers need to be removed.There is a limit stat that can fail in open position and will give you the same symptoms.

 

[ashtonvillageuk]

Many thanks for the advice......if there's a registered engineer, who is familiar with the Ravenheat system and doesn't charge the earth, please give me a shout, I live near to Northampton.

Many thanks,

Steve

 

[ashtonvillageuk]

I had an engineer out and a blocked pressure switch(5009040) seems to be the problem; there's also a couple of tubes which connect onto the switch, he gave them a blow out and all is back to normal. He thought the pressure switch might go altogether at some point.

I think I'll purchase one just in case, I should be able to install it myself, only a couple of plastic tubes to connect and a couple of wires to swop over.

Steve