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  1. Harryw66

    How to bypass or override Vaillant Timeswitch 140

    Hi all, Apologies if this is a dumb question but.. I am planning to replace the VRT 30 thermostat connected to my Ecotec Plus boiler with the new Nest Thermostat E. The boiler also has a Timeswitch 140 fitted. So, I was wondering how I can bypass or override the Timeswitch so that I can do all...
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