problems with a combi boiler
Posted: Mon Mar 10, 2008 9:49 pm
by undertaker
I am having a few problems with a worcester/ bosch heatslave 20/25 combi boiler. It is losing pressure,making a banging noise when hot water tap is switched on, ch stays on and sometimes radiators are too hot to touch.
Posted: Tue Mar 11, 2008 9:11 am
by htg engineer
Sounds like it's overheating, and the pressure relief valve could be releasing the excess pressure to outside.
Have you noticed the Pressure relief discharge pipe releasing any water ?
Is the boiler auto-air vent open, all radiators heat to the top ?(no air in system)
Get a heating engineer out to repair. Could be a faulty thermostat or sensor.