Help replacing Nest with Honeywell RTH9585WF1004
#1
08-21-19, 07:28 PM
Help replacing Nest with Honeywell RTH9585WF1004
Hello Everyone,
I was attempting to replace my Nest thermostat with a new Honeywell RTH9585WF1004. I was installing the wires into the Honeywell unit and I had 2 wires left. W1 and OB. The Honeywell only has 1 wire slot with W-OB on it. Has anyone ever run into this before.
My air handler has all the same wires attached. Should I combine the W and OB wires?
Any help will really be appreciated.
-Beau
I was attempting to replace my Nest thermostat with a new Honeywell RTH9585WF1004. I was installing the wires into the Honeywell unit and I had 2 wires left. W1 and OB. The Honeywell only has 1 wire slot with W-OB on it. Has anyone ever run into this before.
My air handler has all the same wires attached. Should I combine the W and OB wires?
Any help will really be appreciated.
-Beau
Last edited by PJmax; 08-21-19 at 08:19 PM. Reason: reoriented/resized pictures
#2
08-21-19, 08:25 PM
Group Moderator
Welcome to the forums.
You've got an awful lot of bare wire at the control board. You don't want those wires touching.
What is the heating system.... a two stage gas furnace ?
You may need a dual fuel thermostat because if you have a gas furnace..... the heat pump is heating 1, and the furnace is heat 2 and heat 3 and you need the heat pump to shut off when the furnace is running.
You've got an awful lot of bare wire at the control board. You don't want those wires touching.
What is the heating system.... a two stage gas furnace ?
You may need a dual fuel thermostat because if you have a gas furnace..... the heat pump is heating 1, and the furnace is heat 2 and heat 3 and you need the heat pump to shut off when the furnace is running.
Last edited by PJmax; 08-21-19 at 10:11 PM.
#5
08-22-19, 11:00 PM
Group Moderator
We had discussed these stats and dual fuel but I forgot the thread.
I'm fairly certain the Ecobee 3 lite can't be used with dual fuel either.
The Ecobee 3 can and also the Ecobee 4.
I'm fairly certain the Ecobee 3 lite can't be used with dual fuel either.
The Ecobee 3 can and also the Ecobee 4.
#6
08-23-19, 04:03 PM
Hmm, when I set it up after install it had options for dual fuel and aux heat. It recognized that I had a 2 stage furnace, etc. So, so far so good I guess. I appreciate the reply!
#7
08-23-19, 06:14 PM
Group Moderator
