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Misc1 wire venstar

Jeff1618
Community Member

Going from  p374 1900 venstar to black nest thermostat.   Where do I connect the blue misc1 wire on the nest

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14 REPLIES 14

Patrick_Caezza
Diamond Product Expert
Diamond Product Expert

We need to take a look at the back of the front portion of your current thermostat. Can you post a picture of it here?

 

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Jeff1618
Community Member

Cant see option to attach photo on this reply but it says Rh1bus

Jeff1618
Community Member

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Patrick_Caezza
Diamond Product Expert
Diamond Product Expert

Thanks, but I need a picture of the original thermostat, not the Nest thermostat


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I don't have the venstar anymore.

Patrick_Caezza
Diamond Product Expert
Diamond Product Expert

Post a picture of the terminal block on the control board in the furnace/air handler.

 


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

Hey Jeff1618,

 

I'd like to jump in here and check if you've seen Patrick_Caezza's response. Let us know if you need more help by replying to this thread.
 

Thanks,

Archie

Having trouble attaching pics

Not sure what you are after but the nest works good for the heater.  The problem is when I turn on the AC, only the fan turns on and not the  compressor.

Jeff1618
Community Member

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Jeff1618
Community Member

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Jeff1618
Community Member

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Jake
Community Specialist
Community Specialist

Hey there,

 

Apologies for the delayed reply. I wanted to follow up and see if I could be of any help. I found an article with some troubleshooting steps. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further. 

Best regards,
Jake

Jeff1618
Community Member

Thanks Jake.  I wish I knew more about hvac so I could understand these tips im given.  Heater still works good but doesn't recognize the ac.