The boiler flashes 50 and just makes a clanking noise then fires up and clunks off. I think the flashing 50 means thermostat lock out. I've had loads of problems with it since moving in, mainly pressure. I tried filling it by the loop, and sometimes it fills but it wont now. How do I drain and refill?
We have a pump shower, where the hot water was taken from the emersion tank via a top flange. Is it ok to have this done with a combi boiler system? Any help would be so appreciated. We freezin