Wyze Thermostat Installation with No C-Wire at the Wall

[agnetman]

The Wyze T-Stat installation video shows C-wire adapter installed (magnetized on the furnace). The adapter input has 5 wires including a C-wire that connects to the existing furnace wire terminals. The four existing wires from existing T-Stat connect to the C-wire adapter output. After this, the video shows the existing wires at the wall and all of a sudden a Fifth Blue Wire (the C-wire) shows up coming out of the Wall…!!! How that wire got there…!!!

Also, the C-wire provides continuous 24 volt power to the thermostat… Why then the thermostat cannot be Always-On on the screen…?!

[Brlepage]

@agnetman

all of a sudden a Fifth Blue Wire (the C-wire) shows up coming out of the Wall…!!! How that wire got there…!!!

I never noticed that. My guess is it is to show people who have the C-wire to connect it. You just have to connect the wires you have with the matching terminals on the thermostat and adapter. The C-wire adapter does not require any wires to be ran to the thermostat. I have my thermostat setup with the included C-wire adapter and 4 wires going to the thermostat itself, it works perfectly for me.

@agnetman

Also, the C-wire provides continuous 24 volt power to the thermostat… Why then the thermostat cannot be Always-On on the screen…?!

I think this is to save energy. The thermostat has a PIR sensor and the screen turns on when you come near it.

[agnetman]

@Brlepage

I never noticed that. My guess is it is to show people who have the C-wire to connect it. You just have to connect the wires you have with the matching terminals on the thermostat and adapter. The C-wire adapter does not require any wires to be ran to the thermostat. I have my thermostat setup with the included C-wire adapter and 4 wires going to the thermostat itself, it works perfectly for me.[/quote]

Well then the video needs to be modified to show or indicate what you just mentioned above and also clarify one of the four wires carries the 24 volt power to T-stat in lieu of a separate C-wire.

@Brlepage

I think this is to save energy. The thermostat has a PIR sensor and the screen turns on when you come near it.

If the T-Stat was battery operated, I would agree, But the energy saving for not having an always-on screen will be minuscule…! Hardly in cents never in dollars…!

[Bam]

having the screen off would save the life of the screen. this might be one reason.

[sgreeley14]

I’m having trouble getting my thermostat to display the WYZE logo on instillation. All I get is a continuous clicking sound. I have a four wire setup on the thermostat - RC, W1, Y1, G (which becomes the C wire after installing the bypass provided)

Any ideas? Have you heard of the thermostats being bad on arival?

[Brlepage]

I have herd of this. You should contact support about this!
phone: (206) 339-9646 Available Monday - Friday 5 am - 6 pm PT and Saturday 8 am - 4 pm PT
Or online: Wyze.com/support
phone support is typically faster however this isn’t always true due to fluctuation in the amount of calls.

[sgreeley14]

Hi Brlepage

I got it to work . . . not with the wiring I had but I rewired. It was an easier fix then trying to make four wires work. Thanks for your help!

[agnetman]

Did you wire a new fifth (C) wire?

[johnjonz]

The R carries 24 volts to the thermostat. The purpose of the C wire is to complete the circuit, so thermostats that are not battery powered can power up. The C itself does not send power to the thermostat. It’s like the nuetral wire in 120 volt home systems.