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2 years agoThere may be a more turnkey way, but I would use a dry contact reversing switch with a DC motor driving the chain from the bottom.
There may be a more turnkey way, but I would use a dry contact reversing switch with a DC motor driving the chain from the bottom.
It really depends on your model. The BMW i3 for instance has a heat pump and a resistance heater, but the range extender version only gets the resistance heater.