Heat Pumps and Electric Heating - Need help changing a Coleman t-stat

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lrcj100
11-01-09, 05:45 PM
I currently have an old Coleman 7 wire thermostat (it has 9 terminals 2 unused) running my heat pump system and I would like to change it out, but I'm not sure which wires go where. I have a Hunter model 44360 thermostat that says it will run a heat pump but only has 6 terminals! HELP!

Here are the terminals and wire colors if it will help for the Coleman thermostat

R - RED
G - GREEN
X - BLACK
W2 - WHITE
O - ORANGE
L - GRAY
Y - YELLOW
E - NC
B - NC

The Coleman thermostat has 3 switches and 2 lights on it.

SW1 - Heat / Off / Cool
SW2 - Fan On / Auto
SW3 - Norn / Emerg

LT1 - Aux. heat (Blue)
LT2 - Emerg. heat (Red)

Most of the time none of the lights are on when the heater kicks on. If you turn the thermostat up the blue light will come on and then go out after a while. My concern is the Hunter thermostat I have doesn't have all the features I need to run my system correctly.

Here are the terminals on the Hunter

G
RC
RH
WB
Y0
Y1

And it only has 2 switchs

SW1 - Heat / Off / Cool
SW2 - Fan On / Auto

Any help would be very welcome!
Thanks<
Larry


Houston204
11-01-09, 06:06 PM
You are correct, your new stat will not support your multistage heatpump.

I recommend a Honeywell RTH7500D or a RTH7600D.

dun11
11-02-09, 10:31 AM
I recommend a Honeywell RTH7500D or a RTH7600D.

Agreed, stay away from Hunter stats


GRIMKNOTME
11-02-09, 06:17 PM
Flickr: GRIMKNOTME's Photostream (http://www.flickr.com/photos/43836364@N03/?savedsettings=4070610538#photo4070610538)

GRIMKNOTME
11-03-09, 08:33 AM
Flickr: GRIMKNOTME's Photostream (http://www.flickr.com/photos/43836364@N03/?savedsettings=4070610538#photo4070610538)

T-STAT CROSSREF. CHART on Flickr - Photo Sharing! (http://www.flickr.com/photos/43836364@N03/4070610538/?rotated=1&cb=1257262310152)