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JayOne23

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I need help with a new thermostat i swapped out. The old thermostat (see attached photo) had a jumper between W & Y. The new thermostat which is the Honeywell touch RTS8500 series says it doesn’t require a jumper. The heat seems to work and the fan works but I’m not getting any cold air. Any help would be greatly appreciated. Thanks in advance

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Fitter30

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How many wires and colors? Can't have a jumper between w & y .
W is heat
Y cooling
R is power
G is fan
W heat
C is common
R to G should turn on fan
R to W heat
R to Y cooling outside unit
Normal colors
R red
W white
G green
Y yellow
C black
Do not touch R to C
 
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WorthFlorida

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What type of system do you have? Pages 16,17, &18 of the installation manual. The orange wire (O terminal) is for Heat Pump operation and the the important setting is on page 17, function 0190. Most HP/AC units default to heat mode and power has to be applied to the O terminal so the reversing valve operates to places it in cool mode. There are some that are opposite. Power to the O lead to place the unit in HP mode. Your new thermostat this should be set to 0 since you get heat when you change the mode to cool.
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