Glow-worm - Brrrrr! It's getting cold out there! If your #GlowWorm boiler shows fault codes F1, F4, F28 or F29, it means you have a #frozencondensatepipe. Here's our handy guide to dealing
Boiler fault codes - smallmediumgrande
How to clear error F.28 & F.29 issue with Vaillant ecoTEC water heater - YouTube
Vaillant UK on Twitter: "If you are experiencing problems with your boiler related to fault codes F28 and F29, it may be likely your boiler condensate pipework has frozen. Here are some
How to reset a Vaillant ecoTEC boiler - AB Plumbing Heating