I have a Glowworm Flexicom CX30. The hot water gets hot but then goes cold, it never really gets hot enough. If I leave a tap running, it repeats the hot cold cycle a couple of times before coming up with an F25 error. So, up to know, I have had the heat exchange plate off and cleaned (although it did not seem too bad anyway). I have had a MagnaClean filter fitted, the system drain and cleaner put in before draining again and putting in inhibitor. Still same fault. I put the boiler in diagnostic mode and it seems that the flow temp reaches 80+ degrees quite quickly, yet the water is no where near that. The return temp is much lower at about 30 degrees so I'm thinking the flow is not right but given the heat exchange didn't look bad, what else could it be (or could it be that I should change it anyway?). Heating has been pretty much fine up to recently when I get the odd F9 fault which I believe is water pressure, sensor or pump.
I'm at a loss and just had 2 kids trying to have showers which keeps going cold. Could really do without paying for a new boiler just before Christmas and Glowworm charge £275 for a fixed price repair which is more than I have atm. Help appreciated
I'm at a loss and just had 2 kids trying to have showers which keeps going cold. Could really do without paying for a new boiler just before Christmas and Glowworm charge £275 for a fixed price repair which is more than I have atm. Help appreciated