glow worm micron 50ff problems

[peterdarlison]

HI all.
I have a micron 50FF on a W plan system.
It fires up and heats the water , then changes to heating.
However recently when it stops and starts up again to go through the firing procedure it comes up as fault .
The reset light is flashing and the burner light flashes too but slower.
If I turn off the heating and switch back on it sometimes fires up ok and sometimes it takes a few times to work.
I had a new APS fitted maybe 18months ago.
Please help its driving me mad!!!!
Peter from leicester

 

[kitch0978]

if fan and aps are working ok then it could possibly be the overheat/high limit stat...get it checked out by a RGI....

 

[peterdarlison]

Whats a overheat/high limit stat?
Pete