anybody help me with this before I lose the will to live,boiler continuously fires with the clock and selector switch turned off...its not the DHW flow switch because the red light isn't on...could it be the control PCB behinh the modulation board???...I've even pulled the leads off but it still shows a CH demand..
potterton combi 80
- Thread starter stevo518
- Start date
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frost stat sorted it thanks picasso!!
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