potterton 24 faullt Heating staying on even when switched to just the hot water

[davethomas]

Hi
Boiler is a potterton performa 24 combi

When the heating has been on for a while then turned off and switched to just the hot water symbol, the heating stays on,
even when the boiler thermostat is set to zero, the heating is very hot and is using a lot of gas.

The radiators are boiling hot even when the boiler thermostat is only on a bit.

I would be grateful if you could offer me any advice regarding this problem

Many thanks

 

[Howsie]

Switch it off and call an engineer out.

 

[diamondgas]

:iagree: not much you can do by sounds of it... 🙂

 

[Poxi]

Hi
Boiler is a potterton performa 24 combi

When the heating has been on for a while then turned off and switched to just the hot water symbol, the heating stays on,
even when the boiler thermostat is set to zero, the heating is very hot and is using a lot of gas.

The radiators are boiling hot even when the boiler thermostat is only on a bit.

I would be grateful if you could offer me any advice regarding this problem

Many thanks

Sounds like the Hot water microswitch is stuck on..If it is the 3 wire moulded switch flick the pin and listen for a click.

 

[abdul1977]

Sound like pcb has gone or CH flow switch stock on close position

 

[diamondgas]

Sounds like the Hot water microswitch is stuck on..If it is the 3 wire moulded switch flick the pin and listen for a click.

You could be speaking a foreign language here matey 🙂