Have a potterton performa 24 and it has begun to start to call 4 heat/burn even when the therm isnt calling?

Question

randomly comes on,even when main options switch is turned to just hot water/heating+hot water and the therm isnt calling.my only way of stopping this,is to switch to off on mains switch to prevent the boiler from burning/calling.other than this the only way to temporary stop this is to run the hot water tap for a while and then shut it off,this tends to turn the burner off until it starts up again.please advise other than the obvoius call a corgi reg.

Answer 1

When your boiler lights do the radiators get hot?

If i remember correctly the Potterton Performa has a hot water preheat function, this means that it has a very small store of hot water inside the boiler it and will continuously light to keep this water at an adequate temperature. This is done so hot water will be sent to your tap quicker when you open it.

Check you user manual, it will almost certainly explain this function in more detail.

This would explain why the boiler is randomly lighting, it is just doing exactly what it's supposed to.

If it annoys you, turn the hot water preheat function off.

Answer 2

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