I have a Vaillant ecoTEC plus 428 boiler and I'd like to use OpenTherm to control the temperature. I have purchased a VR33 module but wanted to check if anyone had successfully used this with my particular model of boiler. Does anyone know if it is compatible?
I'm aware of the warranty issues but my boiler is out of it's 5 year period now. I also understand there are concerns about self-install and that I'd need to get a qualified person to install or at least test my installation.
I'm aware of the warranty issues but my boiler is out of it's 5 year period now. I also understand there are concerns about self-install and that I'd need to get a qualified person to install or at least test my installation.
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