Glow-Worm boiler keeps breaking down

[Headbanger]

My Daughters' Glow-worm Flexicom 15hx boiler broke down last Thursday.Initial diagnosis was a frozen condensate pipe, but the F4 fault kept recurring,even when the weather was mild.After a call to Glow-worm the plumber stripped and cleaned the boiler but the fault still recurs. Glow-worm say they can not understand this,and promised to phone back but didn't. They have had a week of a cold house and are desparate to get it sorted. Any suggestions?

[AlBags]

How old is it? What does your plumber think?

When you say 'broke down', what do you mean by this?
Just won't light because of the F4 code shown?

Does the condensate pipe discharge outside? Has it been lagged and/or re-routed inside?

If the condensate pipe and syphon is completely clear, I'd say it could well be a PC board problem. But a PC board is (Part No 1337891) £158 plus VAT! Ask plumber to speak to Glowworm again.

[Headbanger]

Thanks for your reply.Its just under 2 years old. The reset button works but the fault comes back after an hour. The outside condensate pipe isnt lagged but it hasn't been that cold here. I'll get the plumber to contact Glow-worm again.

[AlBags]

Sorry I can't think or find anything else!
GL Al.

[Headbanger]

Just for the record we finally got it fixed today.The problem was the electrodes although the boiler is less than two years old.Thank you Allbags for your replies.Hopefully this might help someone else in the future with the same problem.

[RogerRamjet69]

Hi we have a Flexicom 18sx boiler and it is nothing but trouble. It broke down in the cold winter and left us with no heating. It broke down again last year and water leaked all over the motherboard which would have cost us €200+ only it was still under warranty. Then we got it serviced this year which cost €240. And now it has broken down again with some electrode problem that is not yet fixed and that will set us back at least €110 according to the technician. I'm thinking of getting the boiler replaced by a different make/model because I can't afford to keep getting it repaired. It is less than four years old.