Recent content by gest1221

The tank pressure is from manufacturer and shown on the side of the tank 1.5 bar I have not measured the actual pressure in the tank but as you say would have thought it would be OK well under the 3bar system max pressure.

The system supports 7 rads so I will as suggested reduce the tank pressure to .8 bar and see how that goes for a few days thanks for the advice will post again in a few days to let you know what difference it makes Graham

Hi Ian the tank is connected on the system side of the fill loop just past the non return valve. Graham

Hi can anyone help I have just fitted an external expansion tank to a back 105e instant combi but the new tank has a pressure of 1.5 bar and my system should be around 0.9 bar it is an 8ltr tank should I reduce the pressure in the new tank to 0.9 bar at the moment it holds pressure when dhw is...

Right this is a new one on me it was not the diaphragm but it was to do with the diaphragm the small pipe on the diaphragm housing was blocked so it stopped the micro switch working properly cleared the blockage put it back. together and works fine now thanks for all the help pointing me in the...

Thanks for the speedy replies had not considered the diaphragm the last one that I changed a few years ago registered the demand for hot water but failed to fire the boiler in this case the boiler is not recognizing the demand for hot water as soon as it does the boiler fires will fit new...

Baxi105e instant dhw will take up to 5 mins for the led to light up and fire the boiler if I turn the preheat selector no change but if I repeatedly turn the selector on to off it will light the led and fire the boiler new PCB fitted 3 months ago CH working OK is this a duff board not...