I want to Replace a Baystat 240 3AAT80B1A1 with a White-Rodgers 1F89-211 but I am not sure how to wire it. I have attached a pic of my Baystat, along with a link for the WR Thermostat. Thanks! 46733http://www.emersonclimate.com/Documents/White-Rodgers/instruction_sheets/0037-6997.pdf

Open up your furnace and find the thermostat wires. Let us know what color wire is attached to what terminal.

Open up your furnace and find the thermostat wires. Let us know what color wire is attached to what terminal.

First, I changed to a Honeywell RTHL2510/RTHL2410 Series since the White-Rodgers stat was not programmable.

Okay... here goes! I have no clue where the wires go in the Central Electric Furnace 3500A812 . There are two sets of thermostat wires and both blacks and one green is not used. I noticed the blue and the green thermostat wires are connected to 3500-5841 AC Control Pkg, and the yellow wires on that pkg are cut. I do have a heat pump.


The terminals for the Honeywell are B, O ,G, Y, W/AUX, NOT USED, R, RC The R and RC have a jumper wire.
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Enclosed are some pics... thanks for your help!

The pic's are so large I can't make any sense out of them. Is there a terminal strip in the furnace?

The pic's are so large I can't make any sense out of them. Is there a terminal strip in the furnace?

Holy smokes, you are right! Can you possibly save them and view them, or CTRL -

And where would I find the terminal strip? Is it behind the panel where the Sequencer is?

Tried to save them and view, failed. The more I looked I don't think the furnace has a terminal strip.

Tried to save them and view, failed. The more I looked I don't think the furnace has a terminal strip.

It may not. The heat pump is a Trane TWR036C100A1... 1993 and the furnace is a Coleman 3500A812. I don't know. The way I understand it, the O and B is for the reversing valve, and the new thermostat says NOT to connect the B if there is a separate O wire. I don't know, seems kind of odd since the B wire is what is connected to the AC Pkg. I will also leave the Black wire disconnected since it was not connected on the BAYSTAT240. I kind of have a feeling everything may have to be replaced soon. Hopefully it will get me through the winter. I had a technician out here last year on New Year's Eve and NY day and he replaced the Sequencer, and Defroster. I have several burned wires and he told me not to be concerned about them... well, I am concerned!