Baxi 105e no power at fan

[moogwai]

Went to a fan/flue prob earlier and had no power at the fan.....I would say pcb problem but just read some where here that the pcb checks the aps first before sending voltage to the fan.....is this right?
Also what resistance reading should I be finding on the fan??? Anyone??.....gas man????......
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[jefaz]

I have had a good number with the same fault and Same light flashing and all have been pcb!
Part no 5112380

 

[Billy Bob Bob]

that fault is on the 105HE on the 105e its just a 2 wire circuit IIRC and the pcb is the normal culprit but you need to test out from the pcb and check the wiring between both fan and board

 

[rutherford1]

Check continuity at pcb connectors going to air pressure switch, the air pressure switch may not have fell back into the open position i.e the fan won't start good luck.

 

[moogwai]

ok lads.....cheers. will kick myself if it turns out to be the aps...got one of them on me van and couldve changed it there and then!!!