Hi I have a Vaillant VCW GB 242 EH boiler that wont cycle on the roomstat and runs continuously on the boiler stat even if I disconnect the stat from the boiler any ideas. I am a qualified sparks with experience of heating control systems and would guess there is pcb gone but dont know which one.
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problems with roomstat not controlling boiler
- Thread starter Roomstat
- Start date
Hi I have a Vaillant VCW GB 242 EH boiler that wont cycle on the roomstat and runs continuously on the boiler stat even if I disconnect the stat from the boiler any ideas. I am a qualified sparks with experience of heating control systems and would guess there is pcb gone but dont know which one.Well you wouldnt be the first sparky to fit a roomstat and not take out the link.
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