I am replacing my (old) Trane Model BAYSTAT 239 thermostat with a (new)Honeywell RTH7400 programmable thermostat. I need help wiring to the new thermostat. My H/C system is a heat pump system.
My Trane wiring:
X2----|
W ----| X2 and W were jumpered together
O
G
Y
T
R
B

New Honey Well diagram - For Heat Pump
C
G
Y
O/B
Rc --|
R --| R and Rc are jumpered together

Aux
E
L


I have been to the website that has the manual in pdf format, but it doesn't give info on matching up wire letters.

Thanks
MA

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I am replacing my (old) Trane Model BAYSTAT 239 thermostat with a (new)Honeywell RTH7400 programmable thermostat. I need help wiring to the new thermostat. My H/C system is a heat pump system.
My Trane wiring:
X2----|
W ----| X2 and W were jumpered together
O
G
Y
T
R
B

New Honey Well diagram - For Heat Pump
C
G
Y
O/B
Rc --|
R --| R and Rc are jumpered together

Aux
E
L


I have been to the website that has the manual in pdf format, but it doesn't give info on matching up wire letters.

Thanks
MA

Possible match up




And here

[url]https://www.askmehelpdesk.com/heating-air-conditioning/heating-cooling-maintenance-repair-troubleshooting-frequently-asked-questions-58313.html#post268211 (https://www.askmehelpdesk.com/heating-air-conditioning/heating-cooling-maintenance-repair-troubleshooting-frequently-asked-questions-58313.html#post268211)

[/URL]

Possible match up




and here

[url]https://www.askmehelpdesk.com/heating-air-conditioning/heating-cooling-maintenance-repair-troubleshooting-frequently-asked-questions-58313.html#post268211 (https://www.askmehelpdesk.com/heating-air-conditioning/heating-cooling-maintenance-repair-troubleshooting-frequently-asked-questions-58313.html#post268211)

Lo