Ecobee 3 ERV wiring

[Ropscot]

my home came with an erv and I'm trying to figure out how to wire it to my ecobee to replace the standard wall controller. The wall controller is 3 wires but the ecobee only take acc plus and minus. I tried do that and the erv doesn't come on. Any help would be greatly appreciated

[Admin]

What are the terminals your ERV is using now or what is the ERV model number?

[Ropscot]

Attached is how it's wired. It's a healthy climate erv 150.

[Admin]

You have to use the mechanical timer wiring.

See the attached picture.  Install the jumper between ON and RED.  Then wire the Ecobee ACC wires to HI and ON.  The HRV will run in high speed when it's turned on.  You could also use low speed instead.  Just connect the ACC wire to LOW instead of HI.  The Ecobee can only control one speed and not both.

[Ropscot]

Thank you so much!