Hi people
Have just put new diverter on potterton puma 80, plus microswitch and pressure relive valve.
My problem now is when central heating on the pressure creeps up to over 3 bar, when heating not on lose all pressure and have to refill.
The flexi pipe is disconected so this is not leaking into boiler any help please as worried why the pressure goes up and also why the relive valve does not kick in???
Have just put new diverter on potterton puma 80, plus microswitch and pressure relive valve.
My problem now is when central heating on the pressure creeps up to over 3 bar, when heating not on lose all pressure and have to refill.
The flexi pipe is disconected so this is not leaking into boiler any help please as worried why the pressure goes up and also why the relive valve does not kick in???