Boiler: Potterton Promax 30 SL
S plan/ 1HW/1CH zone valve
Our bypass radiator by the HW tank is constantly permanently hot regardless of the radiator valve position. If I turn the valves off, it causes the boiler to go into overheat lockout.
I've checked and touched the boiler pump and that...
Make: Potterton Promax SL
For the past 3 days, I've noticed that my boiler does not start the ignition sequence when calling for HW/CH anymore, there is no whirring sound. I have to press the Reset button for it to begin the sequence and fire up.
I took the casing off just to have a look at...