Flame/fan/flue errors showing on Bax 105 Combination boiler

Don't always expect pinpoint accuracy from these fault lights.

In this weather I'd suspect a frozen condensate drain if you have an external one as a prime suspect. Fan motor failure can occur anytime but not common in my (limited) experience. If it has not had comprehensive servicing for a long time, the bottom of the heat exchanger/sump could be full of crap.

South Wales - we get grey skies and rain, but little in the way of weather excitement. I checked the drain, but that's not it.

The warning lights come on even if the boiler is turned on in hot-water-only mode, before the fan spins up.

I owuldn't be surprised to discover it's the control board - which I have previously had to replace.

Thanks for the advice. Hoping on a plumber now.

Daniele

You've been on usenet for a fortnight or two -- you know of ex-regular diy poster Geoff's business in reconditioned control boards, no?

cetltd.com, does fans and PCBs.

Thomas Prufer

I hope he's in the FAQ!

Andy (another satisfied customer)