My sister in laws 30cxi (2yr old) Boiler had a problem with the filler valve so the boiler had been running at over 3bar for at least two months.
The Pvr has been changed and a new filler valve. (Pressure steady at 1.1 bar rising to 2.2 when hot)
The boiler then started to flash F14
The flow thermistor has been replaced
the overheat sensor was faulty so that has been changed
it now flashes F5 so the sensor has to be reset as it is overheating when the heating is full on and dhw water is being drawn
The pump works fine
The thermistor on the DHW is a clip on and not stocked by most heating spare suppliers, I notice that glowworm do not do this thermistor on their newer models.
Next step Flush the system ?
Change the dhw heat exchanger?
obtain a dhw thermistor?
the boiler was installed by my brother who was a plumber sadly he has since died.
A happy new year to every one and thank you to any one who replies
The Pvr has been changed and a new filler valve. (Pressure steady at 1.1 bar rising to 2.2 when hot)
The boiler then started to flash F14
The flow thermistor has been replaced
the overheat sensor was faulty so that has been changed
it now flashes F5 so the sensor has to be reset as it is overheating when the heating is full on and dhw water is being drawn
The pump works fine
The thermistor on the DHW is a clip on and not stocked by most heating spare suppliers, I notice that glowworm do not do this thermistor on their newer models.
Next step Flush the system ?
Change the dhw heat exchanger?
obtain a dhw thermistor?
the boiler was installed by my brother who was a plumber sadly he has since died.
A happy new year to every one and thank you to any one who replies