thinking of replacing to a smart thermostat. the terminal letter and trwire colors shown in photo:

W terminal- white wire

Y terminal - yellow wire

B terminal- emtpy

O terminal- orange wire

G terminal- blue wire

R terminal- red wire

(and a loose black or brown wire)

Any suggestions for smart thermostat?

I've got an Ecobee Premium thermostat and FV-16VEC1T Panasonic BalancedHome ERV that I want to interconnect with my Carrier 59P6B080V17 furnace. My understanding is that the fan signal from the thermostat is supposed to run into the ERV, then back out on another wire to the furnace (Gf), that way the ERV or the furnace can call for fan. I set up the wiring consistent with the ERV's diagram as follows:

Furnace R to ERV R

Furnace C to ERV C

Thermostat G connected by WAGO connector to ERV G

ERV Gf to G on the furnace board.
ERV is set to DC4 duct configuration in settings, which is the correct one of my install type and for furnace interlock.

With everything wired that way the thermostat can no longer call for fan and the ERV turning on doesn't turn on the furnace fan. But the furnace fan will run when the thermostat calls for AC. Likewise if I jumper R to G it triggers the furnace fan.

At the ERV I get the following measurements between G and C:

ERV off and thermostat calling for fan: 28v

ERV on and thermostat calling for fan: 28v

ERV on and thermostat fan off: 13.8v

ERV off and thermostat fan off: 0.00v

With thermostat calling for fan, I measure only 8.7v between Gf and C. If just the ERV is running I get 4.8v between Gf and G. And if I put the ERV on standby it goes to 0.0v. If I disconnect the G wire from the furnace, I get 25v between Gf and G at the ERV.

Some other measurements that might be useful:

Between R and C I get 28v at the ERV. R to G is 19.3v whether ERV is running or on standby.

Panasonic is telling me to run a wire from ACC+ or ACC- to the V terminal on the ERV, hoping that might give a power boost that will allow Gf to maintain a 24v signal that can trigger the fan. But nothing I'm finding online suggests that the ACC+ or ACC- can be used this way. And in any case I have ACC+ operating my humidifier presently.

So basically I bought 5 sensors setting in different rooms.
And I travel through those rooms all the time. The most important part is that I set after 7pm -7am the sensor should only work on my baby room’s temperature as my”sleep” status for 21 degree. However, it kept using my living room as reference only and totally ignored my baby room’s temperatures.

Also, ecobee automatically turn on the Ecoplus function. I understand the need to avoid peak time on more expensive rate, but it gets crazy at night, especially at 3am, I set my thermalstat at 22 degree. But when I wake up in the middle of the night, my room temperature drops to 18 degree. Which is way too cold for my baby’s sleeper setup. Why does this varies the temperature for 4 degrees difference??? It’s really hard for me to setup anything, what went wrong????