Vaillant ecoTEC showing F28 in Coventry? It means the boiler failed to light after several attempts. What to check yourself and what comes next.
No gas at the hob means no gas at the boiler. Prepayment meter credit is the cheapest fix there is.
Frozen condensate stops an ecoTEC dead. Warm water along the outside pipe, then one reset.
F28: never managed to light. F29: lit, then lost the flame. They share causes but point an engineer in slightly different directions.
Gas pressure, the electrode and its gap, the gas valve and the flue. Rarely a reason to replace the boiler.
No, the lockout is the boiler protecting itself. Smell gas? Leave the house, do not use switches, and call the National Gas Emergency line on 0800 111 999. A fault code is never a gas leak, but a smell always is.
That usually means a worn electrode or a marginal gas supply - a small repair, best done before it stops completely.
Ask for the Gas Safe ID card and read the back, which lists what they are signed off to work on.
A new boiler supplied and fitted by Gas Safe registered engineers - honest advice on the r…
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