Hi I need help to try find a solution to my central heating. I have a potterton back boiler fitted was here when I bought the house. the programmer is the controller for heating and hot water and I have 2 thermostats 1 for the hot water and 1 for the heating. Everything works for the hot water including water pump and boiler but nothing works for the heating. The programmer lights up when the heating is on but nothing registers can someone help. P.S I have replaced the programmer same result.
potterton back boiler centeral heating issues
- Thread starter coombsy3
- Start date
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Do you have a motorised valve? Like a silver or white box above or side of pipe? Or 3 port motorised valve? Usually in the airing cupboard?
Daniel.
Daniel.
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Ok, so what do you reckon it might be? You seem to be the expert here. I'm out. Read up on how zone valves work. 
Your description of the fault points entirely to the zone valve. You've wasted money on a programmer. Guessing gets expensive.
Your description of the fault points entirely to the zone valve. You've wasted money on a programmer. Guessing gets expensive.
Motorised valve need to move to heating port first when calling for heat, then pump and boiler will come on.
Hot water work because it does not need to move valve.
Sound like faulty motor.
Daniel.
Hot water work because it does not need to move valve.
Sound like faulty motor.
Daniel.
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