baxi 105e combi

seanmfc · Posted: Thu Oct 15, 2009 2:58 pm

hi all

i have a problem which is i have no h/w or c/h after a while the fan neon flashes up red i go to the fault section and it suggests the air pressure switch needs replacing can anyone confirm if this is correct

thanks all

powell30 · Posted: Thu Oct 15, 2009 4:22 pm

Does the fan run?? If so it may well be the aps, or it might be a blocked venturi, kinked pipes etc. If the fan doesn't run then its the pcb or fan itself. I would suggest at that point you call an rgi

seanmfc · Posted: Thu Oct 15, 2009 4:31 pm

the fan dont run we took it out and put 240v across it and it worked

lee32 · Posted: Thu Oct 15, 2009 7:26 pm

check the air pressure switch either with a mutlimeter or by shorting it out. if this is okay the chances are it is pcb.

rojaca · Posted: Thu Oct 15, 2009 7:33 pm

Powell30 is giving you all the correct information. It probably is aps stuck in normally open by sounds of it. However if your not competent you really shouldn't be undertaking work (as defined by gas safety regs) on your appliance.
Get an RGI in.

bengasman · Posted: Thu Oct 15, 2009 8:19 pm

rojaca wrote:

...However if your not competent you really shouldn't be undertaking work (as defined by gas safety regs) on your appliance.
Get an RGI in.

Which is why the majority of RGI's on this forum do not give information about working of flues, fans, aps, and other safety critical items.

rojaca · Posted: Thu Oct 15, 2009 8:39 pm

think that was the point I was making and why I withheld information on testing of these items

bengasman · Posted: Thu Oct 15, 2009 8:57 pm

Indeed. It never fails to amaze me when I read what people do, how much time and money they spend on changing the wrong parts, and often the problem is solved by a pro for under £100 including a service.

seanmfc · Posted: Fri Oct 16, 2009 5:47 pm

hi all

i think i got it wrong there is not enough power getting to the fan to activate it when wiring the fan up to test it works fine the book suggests a pcb board is that right

seanmfc · Posted: Sat Oct 17, 2009 9:23 am

all sorted new pcb board

gasright · Posted: Sat Oct 17, 2009 1:14 pm

seanmfc wrote:

all sorted new pcb board

Wow whats next? are you going to work on an O/F appliance

kevplumb · Posted: Sat Oct 17, 2009 1:17 pm

yeah just put the canary on the top jobs right

ohh and keep a davy lamp handy

seanmfc · Posted: Sun Oct 18, 2009 6:15 pm

actually my mate a plumber and registered sorted the problem out so he should get the credit but thanks to all who had their say