I have a potterton boiler. The red light was flashing on the box in a cupboard where the hot water tank sits. I checked the web forums and did nothing about it because it seems to cost a lot. The radiators were heating and so was the hot water, but the red light flashed for weeks. Then today the...
I had a red flashing light on the box in the cupboard with my hot water tank. Searched all the forums for a solution. Could not afford to call someone out. Today the radiators did not heat up. I checked the room thermostat and found the screen blank. Rang friends for Duracell AA Plus batteries...