@calinatl , yep same guy.
I had power to the unit automated using a GE zwave switch, and then an LFM20 relay (dry contact relay) to toggle hi/low speed. That's it. In retrospect, I wouldn't bother with the high low speed unless you're covering a very small space (as on high, it's only 30 CFM fresh air supply). I removed the unit as 30 CFM was not enough for a family of four, and at cold temps (below -7 C) the unit spent most of it's time in exhaust mode only which made the problem worse. I've replaced it with this setup which can vary between 50, 60, 75 and 90 CFM at a much higher efficiency than the small Panasonic spot ERV: Success! 0-10 Volt Control of AC Infinity (or any EC fan motor) using Leviton ZS057-D0Z Zigbee Dimmer or Zooz Zen54 zWave 0-10V dimmer
More on the spot ERV setup here: Panasonic ERV review (FV-04VE1) | The Garage Journal
