My 25 year old Potterton Profile keeps cutting out.
It starts up OK and runs for a while, but then shuts down for a while before starting up again. Sort cycling I believe is the technical term.
All the radiators get hot when it's running, it kettles slightly but just a mild hiss, and the thermostat appears to work.
It was running fine until Friday night when I got home after a few days away and the house was a chilly 12 degrees, so I whacked the power up to max from 3 and all seemed well. Ever since though...
If I have it on 3 it doesn't warm the house very well at all, on Max it's OKish, but it's not right!
It's chewed a few PCB's over the years, so maybe it's time for it's next one?