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- 10 Oct 2020
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Hi all,
Our Vaillany ecotech 637 boiler fires up and rads come on even though thermo in the house is at lowest setting eg it's not requesting the heating. Its driving me mad as its completely unpredictable.
Could anyone please suggest a way to fix this?
Many thanks
Jim
Our Vaillany ecotech 637 boiler fires up and rads come on even though thermo in the house is at lowest setting eg it's not requesting the heating. Its driving me mad as its completely unpredictable.
Could anyone please suggest a way to fix this?
Many thanks
Jim