Yes, the YoLink Thermostat is designed to be user-friendly and easy to install for most users. The installation process typically involves removing your old thermostat, labeling the wires, connecting the wires to the new thermostat, and following the setup instructions provided in the user manual.

Yes, the YoLink Thermostat does require a C wire (also known as a "common" wire) for proper installation and functionality. The C wire is essential for providing continuous power to the thermostat.

No, the YoLink Thermostat does not support 2-stage heating and cooling systems. YoLink Thermostat is designed to be a simple, cost-effective, and user-friendly device. It is primarily intended for use with single-stage heating and cooling systems, which are more common in residential settings. As a result, it does not have the advanced features required to support multi-stage systems like 2-stage thermostats. As of now, there are no official announcements regarding plans to update the YoLink Thermostat to support 2-stage systems. We recommend staying up-to-date with YoLink's product releases and announcements to be informed of any future changes or new product offerings.

The YoLink Thermostat is compatible with most 24V HVAC systems, including gas, electric, and heat pump systems. However, it's essential to verify compatibility with your specific system before installation.

The YoLink Thermostat is designed to work with a variety of smart home systems and platforms, such as Amazon Alexa and Google Assistant. However, to fully integrate the thermostat with these systems, a YoLink Hub is required. The YoLink Hub serves as a central communication point between your smart home devices, enabling seamless integration and control.

Yes, the YoLink Thermostat can work as a stand-alone unit. Without the YoLink Hub, customers can still use it as a regular thermostat to manually control their heating and cooling systems. However, the smart features and remote access through the app will not be available. 

When used as a stand-alone unit, the YoLink Thermostat functions like a traditional thermostat, allowing you to manually adjust temperature settings, set schedules, and control your heating and cooling systems. However, you won't have access to remote control, smart home integration, or other advanced features available through the YoLink app.

The HP/GAS slide switch is used to set the thermostat for heat pump systems (HP) or gas systems (GAS). Set the switch to HP for heat pump systems, otherwise set it to GA

If you set the HP/GAS switch to HP, set the O/B slide switch to O for energizing the reversing valve on cooling (hot climates) or B for energizing the reversing valve on heating (cold climates) operation. If you set the HP/GAS switch to GAS, the valve will only energize for heating.

 No, currently the YoLink Thermostat does not support YoLink Control-Device to Device Tech.

To set the minimum running time, make sure your app and device firmware are updated to the latest versions, then go to the details settings to set the minimum running time from 1 to 60 minutes.

In case of a damaged mounting plate, please get in touch with YoLink Customer Support for assistance.

If you don't have a C wire, you'll need to add a 24 VAC power adapter and apply 24VAC to the R and C terminals.

No, there is no battery-powered version of the YoLink Thermostat.

 Yes, the YoLink Thermostat is compatible with Alexa. You can use voice commands to switch between modes (Auto, Cool, Heat, Off) and to request information about the device's running mode, Cooling Point, and Heating Point.

The YoLink Thermostat does not have an RC slot. Connect both R and RC wires to the R slot of the YoLink Thermostat, as they are the same wire in your HVAC system.

If you are experiencing issues with the YoLink thermostat not staying attached to the wall plate, ensure that you heard a click sound when you initially pushed the thermostat onto the plate. If you heard the sound but still face issues with the thermostat detaching from the wall when using the physical buttons, please contact YoLink customer support for further assistance.

If your YoLink thermostat is stuck in a power-on loop with a blinking display, try connecting only the R and C terminals to check if the thermostat continues to blink. If the issue persists, contact YoLink customer support for further assistance.

To accomplish this, you should acquire and set up a 24VAC transformer. Connect the 24VAC transformer to the C and R terminals on the thermostat.

To swap out your 2-wire heater, adhere to these instructions:

Adjust the HP/Gas switch to the Gas position; the O/B switch's position is irrelevant.

Link the 24VAC transformer to the C and R terminals on the thermostat.

Attach one heater wire to the R terminal, and connect the other heater wire to the W terminal on the thermostat.

To control a 2-wire heating or cooling system with the YoLink YS4003 thermostat, follow these steps:

For a 2-wire heating system:

a. Set the Hp/Gas switch to the Gas position.

b. Ensure you have a 24VAC power supply. Connect one wire from the power supply to the C terminal and the other wire to the R terminal.

c. Connect one wire from your existing 2-wire heating system to the R terminal (along with the 24VAC wire) and the other wire to the W terminal.

For a 2-wire cooling system:

a. Set the Hp/Gas switch to the Gas position.

b. Ensure you have a 24VAC power supply. Connect one wire from the power supply to the C terminal and the other wire to the R terminal.

c. Connect one wire from your existing 2-wire cooling system to the R terminal (along with the 24VAC wire) and the other wire to the Y terminal.

To resolve this, manually set the thermostat to HOLD mode. Without a network connection, the clock won't sync, which can prevent the system from operating correctly. Switch the Mode to Auto first, then set SCHD to Hold again. If this doesn't resolve the issue, please manually create a schedule on the thermostat.