just had the combi serviced a couple of weeks ago. worked fine until saturday at which point it has started acting very strangley. 
Comes on ok when taps upstairs used
when heating comes on, the pump works for 15-20 seconds before bolier lights
boiler will not light when hot water tap downstairs is used
Pilot light is working, pump seems ok and pressure looks normal, though i have noticed it fluctuating a little.
is it just one of things and may stop or is it a job for the engineer.
thanks in advance.
andy
Comes on ok when taps upstairs used
when heating comes on, the pump works for 15-20 seconds before bolier lights
boiler will not light when hot water tap downstairs is used
Pilot light is working, pump seems ok and pressure looks normal, though i have noticed it fluctuating a little.
is it just one of things and may stop or is it a job for the engineer.
thanks in advance.
andy
