I have old Sears model with wires labled white -W , blue-G , red-RC , orange Y ,black -RH , and want to change over to a new programmable digital Noma 5+1+1 with these wires green, yellow, red, and white.Can you help me know which posts to put these wires onto.
Many ThanksHow do I change a Sears non-programmable thermostat five wire Heat/Cool to Noma Programmable Digital 4 wiresounds like you have a heat pump. the new stat wont work for a heat pump. there is no O terminal for the reversing valve.
if you really do have a heat pump, a programmable stat really is not for you. heat pumps really want to keep your house at an even temp. if you try to swing the temp too much you will put the heat pump into emer heat mode and spend twice the money that you would have saved.
put your old stat back on, and get your money back for the programmable one.
possum,hvac guyHow do I change a Sears non-programmable thermostat five wire Heat/Cool to Noma Programmable Digital 4 wirered-r /white-w /green-g/yellow-y
