i installed a honeywell thermostat on a heat pump..now my unit won't come on?

Question

the thermostat say "heat on" but my outside unit won't come on. I left the tan wire off from my trane unit.

Answer 1

not compatible put the old one back on

Answer 2

I have no idea, but I suspect that the tan wire needs to hook up to the thermostat some how. Get the manual for the Trane and the Honeywell and find out where that tan wire is to connect. Make sure that all the other connections are correct. Colour to colour should do, but read what each wire is feeding so that it does go to the correct connection, even if it is a different colour.

Answer 3

Some Honeywell Manuals Will Give You The Wiring Schematic To The Trane.

There Are Programming Steps That You Must Enter In Order For The Trane To Work.

In Most Cases The Tan Wire is Not Used. If You Call Honeywell You May Get Someone In India.

In Some Cases That Honeywell Thermostat Is Not Designed For Your Trane Unit.

Trane Has Thermostats That Are Designed For Trane Units...



Here Is The Wiring Reference Used By All Manufactures



Possible Wires What They Control



R or V or VR RH and RC Single power for HEAT and COOL

RH or 4 RH Power for HEAT (RH not connected to RC jumper clip removed)

RC RC Power for COOL (RH not connected to RC jumper clip removed)

W W Heat control

W2 W2 2nd stage HEAT or heat pump auxiliary heat

W3 W3 3rd stage HEAT or 2nd stage of 2 stage auxiliary heat

Y Y COOL control or 1st stage compression for heat pump

Y2 Y2 2nd stage COOL control or 2nd stage compression for a heat pump

G or F G FAN control

C or X C 24VAC power (to power thermostat) NOTE: TRANE uses B for this connection

H H External Humidifier

DH DH External De-Humidifier

EX EX external fresh air baffle

B B Heat pump changeover (cool to heat, powered in heat)

O O Heat pump changeover (heat to cool, powered in cool)

E Emergency heat

L System monitor

T Outdoor sensor

Answer 4

Did you buy a heat pump thermostat? If it is a thermostat designed for a straight cool it will not call for the out door unit to run in heat because a straight cool does not use the outdoor unit for heating.

Answer 5

Its probably not wired right, there is supposed to be a jumper from rch to rh, and I suspect that there's a chance you don't even have the correct thermostat. Plus it has to be programmed to be able to recognize the unit.



The wiring colors really mean nothing. The reality is that whomever set up the original wiring might not have followed the standard. A qualified tech can straighten it out for you. Do keep in mind that we charge extra for jobs when people try to be their own tech and F something up.



Thanks for all the thumbs down,..... I guess ignorance is bliss....