Heat pump wiring new thermostat


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Old 01-14-19, 05:33 PM
L
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Heat pump wiring new thermostat

Ok so I have a trane xl1200 old thermostat had red to r blue wire to b yellow wire to y orange wire to O black wire to X2 white wire to w green to g on new thermostat has C B O W W2 Y Y2 RH RC G and A new thermostat is a ct101
 
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Old 01-14-19, 06:02 PM
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Welcome to the forums.

Turn off power to air handler before changing wiring.

R - red ---------> Rh/Rc
B - blue --------> C
Y - yellow ------> Y
O - orange ----> O
X2 - black ------> tape off - not needed
W - white ------> W
G -green -------> G

System must be set before connecting the WiFi.
HVAC type switch to HP
Heat type - electric
HVAC setup - C

CT-101 install guide
 
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Old 01-16-19, 01:02 AM
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Ok well I checked voltage and blue has nothing black has 14 v?
 
  #4  
Old 01-16-19, 09:24 PM
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You need to be checking for AC voltages.
With no thermostat connected...... you should read 24vAC from R to each letter listed.

R - C
R - Y
R - O
R - W
R - G
 
 

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