Hello, I have a 240p combi (alpha) not condenser. The fan is always on even when heating and hot water is off, only way to stop it is to turn off boiler at socket. Sorry it`s not always on but sometimes stays on, if you get what I mean, it`s been running for hours this morning.
alpha 240p combi
- Thread starter johntaylor
- Start date
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I don`t think so, because it does go off sometimes but the pilot light stays on.
I think these have a two speed fan, it stays on at low speed for the pilot, which you wouldn't normally hear. It sounds like it may be sticking on high speed intermittently, which seems to me like it may be the main pcb faulty. Although that would need to be checked before replacing it.
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Thanks gents, it`s definitely on at the lower speed, because when cover is off the little paddle thing on top of fan is spinning and when you turn on hot water it goes faster and boiler comes on. Hang on a sec, the selector switch on the boiler when turned to mid position the fan goes off. When turned to select hot water only or over to heating and hot water the fan comes on, but the heating is not on and no hot taps are open. Hope you can understand my ramblings. 
I would check the switch on the gas valve hasn't stuck in the 'lighting' position.
When you depress the knob on the gas valve to light the pilot, it sets the fan to fast for ignition.
PCB's are fairly bullet proof on 240/80's, although have had occasion to change a couple.
When you depress the knob on the gas valve to light the pilot, it sets the fan to fast for ignition.
PCB's are fairly bullet proof on 240/80's, although have had occasion to change a couple.
The button for igniting pilot seems to be ok, I mean after yu hold it in for thepilot to light, it seems to come back out o.k, fan just keeps going back to slow speed, but sometimes it does go off.
The fan could be tight due to dirt and/or a lack of lubrication and not turning in the slow mode.
The usual advice would be to check it but that means opening the combustion chamber which should only be done by a gas competent person.
Tony
The usual advice would be to check it but that means opening the combustion chamber which should only be done by a gas competent person.
Tony
So does that mean that the fan is supposed to run all the time on this boiler albeit at slow speed?
Sorry about the above post, that was the original but it didn`t seem to work, hence this one, i actually posted top post before this one, sorry.
I have had cover off, didn`t know it was corgi job. Think it would be ok for me to lubricate fan?
Think it would be ok for me to lubricate fan?
lube it to get it going as a temp fix while you order another
Ok, will do that, thanks for advice, will let you know how I go.
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