Recent content by abzman1

  1. A

    Wiring for Vaillant 938 NEST install

    The heatlink connects upto 230V L/N/E, however which should the 2 call for heat wires go? Is it the 24V RT or the 230V RT?
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    How to install a Hive Thermostat to a Vaillant 938 Combi Boiler

    I would like to do the same install with a NEST. Would the L, N, E piggy back off the 230v, and the call for heat into the 24v?
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    Vaillant combi 938 thermostat doesnt get up to temperature

    Hi everyone I recently (couple months ago) had a new Vaillant ecotec 938 installed. However, when i set the thermostat to temperature, the radiators get hot, then after a little while cool down. When i check the boiler, it is off and not providing heat despite the thermostat calling for it...
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