Heat pump with back up heat strips
#1
01-16-23, 12:31 PM
Heat pump with back up heat strips
New t5 Honeywell thermostat connections minus the U connections
Current thermostat connections
Will the t5 Honeywell thermostat work on my unit ?
#2
01-16-23, 02:40 PM
Group Moderator
Welcome to the forums.
Almost any stat will work here. The T5 will too.
It appears you have a heat pump with back up electric strips. That means you use the heat pump labeling which also means that pink jumper is in the wrong place and doing nothing.
R ---------------> red --------------> R (keep slider in one R position)
Y ---------------> yellow ----------> Y
C ---------------> blue -------------> C
O/B ------------> orange ---------> O/B
G ----------------> green ---------> G
AUX ------------> white ----------> AUX/W2
Program the new stat for heat pump operation with back up heat/aux heat.
Almost any stat will work here. The T5 will too.
It appears you have a heat pump with back up electric strips. That means you use the heat pump labeling which also means that pink jumper is in the wrong place and doing nothing.
R ---------------> red --------------> R (keep slider in one R position)
Y ---------------> yellow ----------> Y
C ---------------> blue -------------> C
O/B ------------> orange ---------> O/B
G ----------------> green ---------> G
AUX ------------> white ----------> AUX/W2
Program the new stat for heat pump operation with back up heat/aux heat.
#4
01-16-23, 03:04 PM
Group Moderator
That pink jumper should have gone from AUX to E..... looking at the correct labeling below the terminals. This jumper would have allowed just the electric heat to run when in E (emergency) mode.
They just used the piece of pink wire as a jumper.
The wire that was cut off from the cable is a pink spare wire.
L is light.... as in warning or trouble light.
They just used the piece of pink wire as a jumper.
The wire that was cut off from the cable is a pink spare wire.
L is light.... as in warning or trouble light.
#5
01-24-23, 09:10 PM
Forum Topic Moderator
There is a company here in Houston that wires that way regularly.
I figured it was so the homeowner could see when the expensive heat strips kick in.
I always wire as PJ has posted.
I figured it was so the homeowner could see when the expensive heat strips kick in.
I always wire as PJ has posted.
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