combi boiler wont fire

[Jaysm1]

combi boiler wont fire up, pilot light is lit any ideas?

 

[toby fletcher]

What boiler is it, with a pilot light its old

 

[Jaysm1]

potterton puma yer its about 15years old

 

[Puddle]

Maybe fan seized or pcb
🙁

does it make any sound when turned on,check not switched to stand accidentally

 

[fabio]

I would follow the sequence water(pump spinning) air (fan/air pressure switch) working........then on to the gas valve...?

 

[toby fletcher]

Check the solder joints on the main pcb sometimes ( in electronic terms ) they get dry joint which means, solder has come away from the pcb, its self very hard to see with naked eye but use a magnifyer if so you can just drop a solder irin on them for couple of second( works on potterton supreama)..

 

[Billy Bob Bob]

as puddle sways likely fan,pcb or lwps gunked up(that's the low water pressure switch)