Hi,
I have a new PCB installed in potterton about 3 years ago. It the newer type with more sofisticated electronics than the original with all its dry solder joints etc.
Its worked really well for a couple of years but now the boiler keeps tripping off with the green LED flashing when the heat is still being demanded from the hot water tank. Im pretty sure the tank temperature has not yet been reached and so I am currently guessing that its the thermostat on the boiler that is somehow being misread.
I have pulled the thermostat out and left it dangling in the boiler space, and now it works fine such that the heat demand is satisfied by the water tank and the boiler then shows a steady green/red LED which is all okay (heat stisfied).
I have measured the thermostat resistance and it reads fine and certainly between the 40Kohm and 2 mega Ohm resistance specified. Its also been replaced to little avail.
So my suspicion is the PCB, but at £150 a time, its a lot of money.
Does anybody have experience of this type of fault and what the resolution was?
thanks
Guy
I have a new PCB installed in potterton about 3 years ago. It the newer type with more sofisticated electronics than the original with all its dry solder joints etc.
Its worked really well for a couple of years but now the boiler keeps tripping off with the green LED flashing when the heat is still being demanded from the hot water tank. Im pretty sure the tank temperature has not yet been reached and so I am currently guessing that its the thermostat on the boiler that is somehow being misread.
I have pulled the thermostat out and left it dangling in the boiler space, and now it works fine such that the heat demand is satisfied by the water tank and the boiler then shows a steady green/red LED which is all okay (heat stisfied).
I have measured the thermostat resistance and it reads fine and certainly between the 40Kohm and 2 mega Ohm resistance specified. Its also been replaced to little avail.
So my suspicion is the PCB, but at £150 a time, its a lot of money.
Does anybody have experience of this type of fault and what the resolution was?
thanks
Guy