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Hi, There are only the controls you said (OFF/HOT WATER & CH/RESET) on the Duotec and the temp control only goes down to 25c. I've spoken to Baxi technical about this because I paid extra for the built in digital clock and this has no off facility on it. (rip off) They told me that I should...

Thanks for all your suggestions. I will speak to BG and see if they can help. :wink:

Its not nitrogen opps I mean HYDROGEN in the towel because it will not ignite with match. Regarding air getting in the system before the pump has anyone got any ideas where this might be. BG keep telling its from sludge and probaly want to charge for a power flush. (£440). I rather put that...

Air is in the towel rail as we speak, the last time the system emptied was about 6 weeks ago. I have to bleed the towel rail every week. The top 4 to 6 inches of the rail are usually cold till bled.

I do have a contract with BG. BG changed the central heating heat exchanger because it had a leak. They changed the combustion chamber because that to had a leak on what to me looked like a pipe that wraps around the chamber but is part of it (welded to it). The water in the rads is not as...

Combustion chamber and heat exchanger were replaced by BG about 3 months ago. I have since drained down system to replace a broken TRV. It has been getting air in the towel rail for about 12 months. BG says its rust in the radiators creating gas, but I was under the impression that you had to...

Thanks Jamie I will try that.

Hi, My Vaillant combi compact WCWGB221H is running fine, (both heating & hot water). But I keep getting air in the towell rail in the bathroom. I have to bleed this about once a week and yet I dont lose any pressure on the pressure gauge. (1bar when cold, 1.5 bar when up to temp). The system...

Thanks but I tried there but no luck. :cry:

Hi, Does anyone know where I can download the manufactures instructions for a Vailant VCW GB 221 H combi boiler :?: