Got an issue with my vaillant vr66 controller, its not putting 240 to DHW motorized valve, if i was to straight swap this myself (i am an electrician, commercial though never really touch heating systems) would that need programming, and if so would this be possible by myself?
Vaillant VR66 straight swap?
- Thread starter Owzy
- Start date
A straight swap, no problem. No programming necessary.
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