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Having problems with my hot water - it won't switch off and is constantly asking the boiler to fire up. Water is VVVV hot. Have changed the programmer on the boiler - to no avail so think actuator valve is not working - seems to be sticking as i can move it manually. I have drayton valves...

Boiler is indoors. Found them in the airing cupboard. There are three grey boxes attached to pipe work. Think two are for ch as I have two separate thermostat controls in the house (one upstairs, one down). I assume the actuator valve for the hot water is the one closest to the tank. Have...

Thanks for quick reply. Scuse my ignorance but is the micro switch located in the boiler itself or located near the hw tank and plumbing?? Is it big job to sort out?????

HI need some advice. I have a Potterton Promax he boiler. Even with the CH and HW set to off on the programmer, the boiler keeps firing up every few minutes. I have replaced the programmer once, but it has started to have this problems again. I think its the HW that is calling for the...