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vr940f

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    Unable to connect VR940F to TurboTec Plus

    Hello everyone, I’m having trouble connecting the Vaillant VR940F module to my TurboTec Plus boiler (manufactured in 2015). What I’ve done so far: 1. Connected the module to the BUS terminals on the boiler. 2. Checked the voltage on the BUS — it’s 21 V, which seems...
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