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honeywell with 8 wire heat pump with duel fuel supply

rmb1
Community Member

I am hoping to replace honeywell thermostat with 8 wiring with Nest 3rd generation. I have heat pump with duel fuel (electric and propane). can someone advise on wiring please - where each color wiring will go with nest. thanks 

1 Recommended Answer

Patrick_Caezza
Diamond Product Expert
Diamond Product Expert

@rmb1 

Give this wiring a try.

Blue - C to C

Red - R to Rc (jumper to Rc not needed)

Black - S1 -tape off, not used

Brown - S1 - Tape off, not used

Orange - O/B to OB

Yellow - Y to Y1

Green - G to G

White - AUX/E to W2/AUX (set as Aux heat)


To ensure that I see your reply, please tag me using @Patrick_Caezza

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2 REPLIES 2

rmb1
Community Member

Screenshot.png

Patrick_Caezza
Diamond Product Expert
Diamond Product Expert

@rmb1 

Give this wiring a try.

Blue - C to C

Red - R to Rc (jumper to Rc not needed)

Black - S1 -tape off, not used

Brown - S1 - Tape off, not used

Orange - O/B to OB

Yellow - Y to Y1

Green - G to G

White - AUX/E to W2/AUX (set as Aux heat)


To ensure that I see your reply, please tag me using @Patrick_Caezza