Dec 23, 2017 - Halstead Wickes Combi 102 Manual. I've been doing a lot of the work on it myself Sarah Beeny style but had to call a heating engineer out last. Halstead Boiler Manuals GAS SAFE REGISTERED All Gas appliance products and parts MUST be fitted by a qualified, competent and fully registered member of the Gas Safe Register.

[quote='htg engineer']Halstead boilers have always been cheap and not very reliable. Madness project nexus mods fallout. Sounds like the lockout is the boiler over-heating - because the gas valve is not modulating. The modureg (modulation regulator) on the gas valve controls the flame, if the flame is excessive the boiler will over-heat.

A modureg if available or a new gas valve should solve the problem. Htg[/quote] but theres one problem the boiler does that only when is not used for lets say 8 hours or more then when its time to use it its on lockout in other words you dont use it and she goes in to lockout on its one!!!! Rank: Labourer.