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AC Heat not working properly

Darkhawk76
Community Member

I have a heat pump with Aux heat and I wire my nest to what I believe is correct. I get hot air when trying to get AC, Ive tried switching the O/B equipment setting but no luck.

I have a Honeywell thermostat I'm trying to replace. I'm attaching both my original Honeywell and the Nest wiring. Any help would be appreciated. 

20220421_190425.jpg

7 REPLIES 7

Darkhawk76
Community Member

Here's my nest wiring

Screenshot_20220508-220227_Gallery.jpg

Patrick_Caezza
Platinum Product Expert
Platinum Product Expert

Great job on the wiring. That's what I would recommend.

Just checking, but you have tried the?

If your system starts to blow cool air when your Nest thermostat is in Heat mode (or if it blows warm air when it's in Cool mode), change the settings for orientation of your heat pump.

Nest Learning Thermostat

  1.  On your thermostat, go to Settings.
  2. Select Equipment.
  3. Select Continue > Continue.
  4. Select Heat Pump.
  5. The Nest Thermostat defaults to an O setting for heat pumps. 
    • If the O option is highlighted, select B.
    • If the B option is highlighted, select O.
  6. To make sure the issue is resolved, test your heating and cooling again.

 

 


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

Thanks. I'll take a look at the setting again, but I'm pretty sure I flipped it to B then back to O when it didn't work. I'll test it again. It won't let me test cooling cause the temp has been below a certain degree, but when I tested heat the air blowing out seemed to be at room temp. I may pop a thermometer in the vent to double check the air temp coming out of the vent. 

 

Patrick_Caezza
Platinum Product Expert
Platinum Product Expert

Try doing a reset to factory default if it still doesn't work.


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

MelbaDT
Community Specialist
Community Specialist

Hey folks, 

 

Thanks for answering here, Patrick_Caezza. 

 

Darkhawk76, I'm chiming in to ensure everything is good to go here. How's your Nest thermostat now?

 

Best, 

Melba

 

MelbaDT
Community Specialist
Community Specialist

Hey Darkhawk76, 

 

Checking back in if you still need our help with your Nest thermostat. Let us know by replying to this thread. 

 

Best, 

Melba

MelbaDT
Community Specialist
Community Specialist

Hi, 

 

I haven't heard from you in a while so I'll be locking this thread if there is no update within the day. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the community.

 

Best, 

Melba