I have been pulling my hair out trying to get this to work right.

The Honeywell is wired:

G... Green
C... Blue
R... Red
W1 and Y... jumped together
L... empty
W2 and E... jumped together
B... empty
O... Orange

The Hunter says:

RH... 24 volt
RC... 24 volt cool
Y/O... a/c compressor
W/B... heating
G... fan
Y1... heat pump compressor


I am trying to hook this up to a Trane A/C unit. I appreciate any help.

I'm not familiar with Hunter but, it looks to me as though you have a single stage heat pump thermostat and you need a two stage heat pump thermostat. ( one with W2 ) The second stage W2 is what brings on your second heat source.

I only have one heat source. I think some of the problem is that my house was wired at one time for 2 separate heating and cooling systems. We have only had this place for a year and are quickly finding out the joys of owning a 30 year old house.

Is this a Heat Pump? I assume it is and does it have back up electric strip heat? The Honeywell has a wire to W2 & E and that would tell me it has some kind of auxiliary heat.

Was the AC added to a furnace or does it have its own air handler?