J
john roche
I have a Potterton performa 28 combi boiler. Since the central heating has engaged this year the pressure guage has been dropping every 24 hours to below 1 bar , zero at times. I have refilled using the top up loop (it only takes about two seconds) added fernox leak sealer to the system and bled all the rads, but pressure drops again over next 24 hours. I have noticed that when the pressure shows low there is no low pressure warning light active and hot water and heating still work. Question is, do pressure guages fail in this way? is there a way to check or should I just replace it and see
Thanks
Thanks