Grant Minor boiler faulty pressure gauge

Hi All,

I have a Grant Minor boiler which is about four years ago. Last night, a pressure gauge of the boiler has suddenly crept into the red zone. Well, I cannot locate the connector although I have the pressure discharge key under the boiler. Someone please guide me about the target boiler’s pressure.


Your suggestions will be highly appreciated


Hi Sheila, try bleeding a towel bar radiator, as this will results in decreasing the current pressure of your boiler & expectantly letting it to run smoothly. After that, you have to reduce the boiler’s pressure. Nevertheless, if the pressure of your boiler rises just after doing this & keeps rising then, it means that either the filling hoop is not properly closed or perhaps the heat exchanger is faulty.