baxi 105he

[andyg0507]

been to do a service today on the above boiler with my boss, boiler had not been serviced in 5 years since it was installed, customer mentioned his hot water was taking ages to heat up same with ch, anyway when we came to fire it up, the fan fault/flue blockage light came on, after all the nessacary checks and a couple of phone calls to baxi we couldunt clear the problem.

strange thing is after about 10 mins it fires up fine???

any ideas
??

 

[Toddyplumb]

APS faulty

 

[andyg0507]

just seen another thread containg the same problem pointing towards pcb fault, but think the apr will probably be first port of call, it did seem to fire up after 10mins or so. checked the venturi and all seemed fine.

 

[Toddyplumb]

Answered in other thread but was the fan ramping up and down or just running constant after initial ramp up