Are the thermostats connected to separate HVAC/furnish units?

Jul 3, 2024
7:25:29am

oilman Contributor

Seems weird that both screens are dead unless they are both connected to the same main unit. I’m not sure how two thermostats can control one unit unless it is a mini split with one compressor/condenser and 2 evaporator/air blowers

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oilman

Bio page: oilman
Joined: Aug 3, 2007
Last login: Jul 5, 2024
Total posts: 713 (0 FO)

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Messages

Author

Time

Need help troubleshooting my Nest thermostat not working. In the app it says "can't connect to wifi since it isn't

Chemish All-American

Jul 3, 4:42am

GFI outlet or breaker?

WDaddy

Jul 3, 4:47am

No breaker switches are flipped. I flipped the AC breaker off and on just to see if that would do anything. It didn't.

Chemish

Jul 3, 5:04am

Do you have your old thermostats stashed in a drawer? Maybe reattach those and see if you can get it to work. Stop gap

WDaddy

Jul 3, 5:13am

I'm pretty sure we do. Whether I'll be able to figure out how to reconnect it is another story.

Chemish

Jul 3, 5:22am

Can you disconnect the thermostat to restart them?

SWKTNative

Jul 3, 4:55am

You can pull them off the wall. The wires seem to be connected fine. But it would be weird if both thermostats had wire

Chemish

Jul 3, 5:09am

I agree. I'm just thinking maybe a restart to both devices would help flush out

SWKTNative

Jul 3, 6:07am

You can charge them via usb. They should be getting power from the furnace but it’s a vampire charge not a dedicated

LaserCoug

Jul 3, 5:56am

This is the correct answer. I’ve had this happen

DavisCoCoug

Jul 3, 7:38am

I was able to disconnect the wall unit and charge that with the USB. So, I'm getting the display now. But it's still

Chemish

Jul 3, 7:58am

Charge the head unit fully with USB

DavisCoCoug

Jul 3, 8:25am

Check the fuse on the furnace.

byubryce

Jul 3, 5:57am

I went up to the attic to check the furnace. I'm sure there must be a fuse there but I certainly couldn't find it.

Chemish

Jul 3, 6:53am

Take off the panel. It’s a small rectangle with a number on it. Most like 5.

byubryce

Jul 3, 8:01am

Question - what happens to your HVAC operations when you lose internet service?

Acorn

Jul 3, 6:48am

They've always continued to work even if we lose internet

Chemish

Jul 3, 6:51am

So the internet connection is more about making changes than operating?

Acorn

Jul 3, 6:54am

Yes

ryebrye

Jul 3, 6:55am

Are the thermostats connected to separate HVAC/furnish units?

oilman

Jul 3, 7:25am

I've seen two thermostats on one unit before. Usually the second thermostat controls a damper to let air through that

WDaddy

Jul 3, 7:53am

I need this to force more air into the master bedroom at night.

oilman

Jul 3, 10:50am

Yeah, it's one AC unit but it's split for upstairs and downstairs

Chemish

Jul 3, 11:01am

Ended up being a loose wire in a panel board in the attic. So, $79 later is running again.

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