12-22-2021 03:18 AM
The connections from the zone controller are
R - C - Y1 - Y2 - Y3 - O - G
Y3 is connected to W2.
The problem is the furnace never goes to into stage three heating.
The Y1 - Y2 are the only wires that come on
the chart included in the zone controller
operation modes Y1 Y2 W O G
Heating 1st stage on off off off on
Heating 2nd stage on on off off on
Heating 3rd stage on on on off on
Heating Emergency off off on off on
Cooling 1st stage on off off on on
Cooling 2nd stage on on off on on
Constant Fan off off off off on
Any suggestions on how to get the thermostat in to 3rd stage heating
07-21-2022 01:47 PM
Hi everyone,
In an effort to keep content fresh on the forums here and prioritize current issues, I'm going to go ahead and close up this thread. If you have any outstanding issues from this post or any other problems, please feel free to open up a new discussion.
Thanks,
Jeff