Hi
For the last few months we have an intermittent fault/niggle with our Worcester 24Si II combi boiler - the central heating pump starts up in the middle of the night, runs for a few minutes, then stops. Other than this, the boiler works fine, but its an annoyance as it wakes us up every time.
Only the pump runs; the boiler doesn't attempt to light, nor the fan.
I've checked the timer unit - the CH is turned off for the summer, and there are no rogue times stored in the menus.
Could it be a controller board fault? I hope not, as it had an expensive new Bosch PCB not 18 months ago!
Other thing I was wondering: could there be a fault in the boiler over-temp protection which is calling for the pump to run??
Any help gratefully received
Thanks
Jim
For the last few months we have an intermittent fault/niggle with our Worcester 24Si II combi boiler - the central heating pump starts up in the middle of the night, runs for a few minutes, then stops. Other than this, the boiler works fine, but its an annoyance as it wakes us up every time.
Only the pump runs; the boiler doesn't attempt to light, nor the fan.
I've checked the timer unit - the CH is turned off for the summer, and there are no rogue times stored in the menus.
Could it be a controller board fault? I hope not, as it had an expensive new Bosch PCB not 18 months ago!
Other thing I was wondering: could there be a fault in the boiler over-temp protection which is calling for the pump to run??
Any help gratefully received
Thanks
Jim