Glow warm Flexicom CX no hot water


I am an old Glow-warm boiler model Flexicom CX. Boiler was working fine for year, but started to get crazy during last weeks. Every now and then it switches off showing error code: F1, F3 or F4. Each time it picked-up a normal functionality after restarting. Unfortunately- it looks that it won’t be the case today. Any idea how to fix it, preferably permanently?


Hi John

F3 code starts for fan fault, F1 and F4 stand for ignition fault. Having those appearing from time to time my guess would be PCB fault, which is actually common issue with this type of boiler. Fan will need to be replaced to. Personally I wouldn’t replace PCB on my own, as it is complicated to make right all the connections, but you decide.