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Summary of Contents for YoSmart YoLink Thermostat 2
- Page 1 °F SEN1 °F SEN2 LOCAL YoLink Thermostat 2 YS4004-UC Installation & User Guide Revision Apr. 29, 2024...
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Page 2: Table Of Contents
Contents . Welcome . Before You Begin . In the Box . Required Items . Get to Know Your Thermostat 2 . Install the App . Add Your Thermostat 2 to the App . Installation . Operations: Set the Cool/Heat . -
Page 3: Welcome
Welcome! Thank you for purchasing YoLink products! We appreciate you trusting YoLink for your smart home & automation needs. Your 100% satisfaction is our goal. If you experience any problems with your installation, with our products or if you have any questions that this manual does not answer, please contact us right away. -
Page 4: Before You Begin
Before You Begin Visit our YoLink Thermostat 2 support page on our website, for the latest installation guides, additional resources, information and videos by visiting: https://www.yosmart.com/support/YS4004-UC Or by scanning the QR code: Download the most current version of the user... - Page 5 Before You Begin, Continued Before you begin installation, please note, the Thermostat requires a C (Common) wire. It will not function without a C wire. If the thermostat location does not have a C wire, a new C wire, or a C wire adapter, must be installed.
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Page 6: In The Box
In the Box Thermostat 2 Mounting Plate (“Back Plate") & Wall Screws (4) & Drywall Anchors (4) Quick Start Guide xxxxxx xxxxxx xxxxxx xxxxxx xxxxxx xxxxxx xxxxxx xxxxxx Wire Labels... -
Page 7: Required Items
Required Items The following items may be required: Drill with Drill Bits Multimeter Medium Phillips Screwdriver Small Slotted Screwdriver Level Pencil Alternative Mounting Hardware... -
Page 8: Get To Know Your Thermostat
Get to Know Your YoLink Thermostat 2 Please take a moment to familiarize yourself with your new Thermostat. °F SEN1 °F SEN2 LOCAL 1) Current day of the week 15) Fan status 2) Current time of day (“AUTO" if fan will run on 3) Current Date demand, “ON"... -
Page 9: Install The App
Follow the instructions, to set up a new account. Allow notifications, when prompted. You will immediately receive a welcome email from no-reply@yosmart.com with some helpful information. Please mark the yosmart.com domain as safe, to ensure you receive important messages in the future. -
Page 10: Add Your Thermostat 2 To The App
Add Your Thermostat to the App 1. Tap Add Device (if shown) or tap the scanner icon: Scanner icon 2. Approve access to your phone’s camera, if requested. A viewfinder will be shown on the app. 3. Hold the phone over the QR code so that the code appears in the viewfinder. - Page 11 Add Your Thermostat to the App, Continued 4. You can change the device name and assign it to a room later. Tap Bind device. 5. If successful, the screen will appear as shown. Tap Done.
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Page 12: Installation
Installation This installation manual assumes the Thermostat 2 is replacing an existing thermostat. For new installations please disregard references to the existing thermostat, etc. CAUTION: To prevent personal injury and damage to property, always remove power to the thermostat by turning off the HVAC equipment at the circuit breaker panel, prior to performing any steps related to connecting or changing the thermostat wiring! - Page 13 Installation, Continued THERMOSTAT TYPICAL WIRE FUNCTION REMARKS TERMINAL DESIGNATIONS NON-HEAT PUMP : STAGE 1 COOL MODE TYPICALLY HEAT PUMP : YELLOW STAGE 1 COMPRESSOR ON/OFF CONTROL NON-HEAT PUMP : STAGE 2 COOL MODE TYPICALLY HEAT PUMP : YELLOW OR STAGE 2 LIGHT BLUE COMPRESSOR ON/OFF...
- Page 14 Installation, Continued THERMOSTAT TYPICAL WIRE FUNCTION REMARKS TERMINAL DESIGNATIONS AUXILIARY HEAT TYPICALLY C OR COM 24VAC COMMON CYAN, SEE NOTE #1 TYPICALLY R, RC, RH 24VAC POWER Note #1: Confirm the presence of a C wire, or one labeled COM or COMMON. The Thermostat 2 will not function without a C wire (or C wire adapter, as previously noted).
- Page 15 Installation, Continued 1. Refer to the chart above, match up your ther- mostat wires with their matching screw terminal on the Thermostat 2 terminal strip. 2. Turn off power, as required, to ensure there are no energized wires at the thermostat location. 3.
- Page 16 Installation, Continued 6. Terminate each conductor on its respective screw terminal. You will need to loosen each screw terminal, first. When finished, gently tug on each wire, to ensure a good connection. 7. Refer to the rear of the Thermostat 2. Set the HP/GAS slide switch to HP for heat pump systems otherwise to GAS.
- Page 17 Installation, Continued 9. Gently push the thermostat down onto the back plate. You may hear an audible click, as it snaps into place. Observe the rear thermostat sides, near the wall, to ensure there are no uneven gaps between the plate and the thermo- stat.
- Page 18 Set the Cooling or Heating Setpoint 1. First, tap the up or down button. Tap the appropriate buttons, to adjust the setpoint up or down. 2. When finished, tap the DONE button. To exit this process, tap the BACK button. Tap to raise the setpoint Cool Temp...
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Page 19: Operations: Navigating The Menu System
Navigating the Menu System 1. First, tap the MENU button. 2. Use the UP and DOWN buttons to navigate up or down the menu items. 3. Use the ENTER button to select an item. 4. Tap DONE when finished, or tap BACK to exit without saving. - Page 20 Schedules: Editing & Copying This section demonstrates viewing and editing the schedule from the thermostat. See section T for viewing/editing from the app. The Scheduling Submenu: One day of the week is displayed at a time. The current day is identified at the top of the screen, abbreviated Mon, Tue, Wed, etcetera.
- Page 21 Schedules: Editing & Copying, Continued Mon Schedule Time Wake 06:00 AM Leave: 08:00 AM Return: 05:00 PM Sleep: 11:00 PM Copy to... DONE NEXT 1. To edit a schedule, tap MENU. Navigate to Schedules, tap ENTER. 2. To change the selected day, tap the NEXT button until the correct day is displayed.
- Page 22 Schedules: Editing & Copying, Continued Copy Schedule To Sun: Mon: Tue: Wed: Thu: Fri: BACK COPY 1. After editing a day of the week that you wish to copy to another day, select Copy To. Tap the COPY button. A screen similar to the one below is displayed, showing the six other days of the week.
- Page 23 Y & Aux Config Y & AUX Config Y1 OFF: Y1 OFF under: AUX only: AUX start time: 45min AUX degree: 24hour BACK DONE This menu screen allows for configuring heat pump-related settings for the thermostat. If in doubt about the correct setting, please contact customer support (refer to the last page of this user guide).
- Page 24 Y & Aux Config, Continued AUX duration: This option sets a maximum time that auxiliary heating can run. AUX differ: This setting determines the minimum temperature gap between the heat setpoint and the current temperature, before the aux heating will run. Y2 start time: This option sets a time that 2-stage heating or cooling start to run Y2 duration: This option sets a maximum time...
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Page 25: Date And Time
Date & Time Date & Time Auto Update: Format: Time: 03: 11 AM Date: 02 / 11 / 23 Day: Wednesday BACK DONE This menu screen allows for changing the time and date. You have the option of either manually changing the time and date, or time and date being managed by the app. - Page 26 Date & Time, Continued Auto Update: Set to YES to allow the app to manage thermostat date and time. Format: Set to 12 for 12 hour format (e.g. 1:11 PM), set to 24 for for 24 hour format (e.g. 13:11). Time: Set the current time.
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Page 27: Operations: Temperature Settings
Temperature Settings Temperature ECO: ECO setting: 2 ° F/C Mode: Fahrenheit Calibration: +0.0 ° Current: 32.0 ° BACK DONE This menu screen allows for changing temperature-related settings for your Thermostat, such as Fahrenheit or Celsius format. ECO: (Energy Conservation Operation). While in ECO mode, your thermostat will adjust your normal setpoint to a more economical setting (e.g. - Page 28 Temperature Settings, Continued Calibration: If the thermostat temperature is different from the correct temperature (based on a calibrated thermometer, etc.), change this number to offset the displayed temperature by that amount. For example, if the actual temperature is .5 degrees colder, set this number to -0.5 °.
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Page 29: Display And Sound
Display & Sound Display & Sound BG Color: Black Brightness: BL Timeout: Sound: BACK DONE This menu screen allows for changing settings related to the appearance and sound of your Thermostat. BG Color: Select Black or Blue background color. Brightness: Adjust screen brightness or intensity. -
Page 30: Operations: Factory Reset
Factory Reset Factory Reset Factory Reset Network Reset BACK ENTER This menu screen provides access to factory reset and network reset functions. These functions are not typically used without the direction of a customer support agent or technician. Performing a factory reset will restore all settings to default. - Page 31 Factory Reset, Continued Factory Reset: Select this item, then tap ENTER to start the factory reset. The display will go blank, and in a moment or two the thermostat should return to normal, online status. Verify the mode and settings are correct, otherwise update them as needed, either from the app or the thermostat.
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Page 32: Master Sensor
Master Sensor Master Sensor LOCAL:0300005917 SEN1: 03000080C9 YES PAIR SEN2: 0000000000 NO PAIR DEL : SEN1 SEN2 Wait seconds to refresh sensor id after pair press BACK DONE The YS4004 Thermostat supports pairing with two YS8007 Thermometer Hygrometers to serve as temperature sources for the thermostat. - Page 33 Master Sensor, Continued When pairing the outside temperature sensor (support YS8007 Thermometer Hygrometer only) at the device end, you need to first press and hold the SET button on the sensor for 5 seconds until the green light flashes. Then, on the YS4004 thermostat Master Sensor interface, use the left and right arrow buttons to navigate to "PAIR,"...
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Page 34: App Functions: Device Screen
App Functions: Device Screen In the app, tap on your Thermostat icon. Your Thermostat main screen should be similar to the one shown below. Tap to Exit This Screen Device Name Tap for Contact & Support Resources Tap to Device Details Screen Connection Status Swipe left or right to adjust... - Page 35 App Functions: Device Screen, Continued Indicates the current mode Green if active Gray if inactive/disabled Indicates current fan mode Green if on Indicates the current run mode Green = running on the schedule (auto mode) Gray = not running on a schedule (auto mode) Master Sensor Tap to switch the master...
- Page 36 App Functions: Device Screen, Continued 1. To protect the HVAC from damage due to frequent starts, it waits 5 minutes before restarting cooling or heating after a mode change or a previous cycle. 2. The HVAC will run (or stop) heat mode until the room temperature is 1°F below (above) the heating setpoint or run (or stop) cool mode until it's 1°F above (below) the cooling setpoint.
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Page 37: App Functions: Device Details Screen
App Functions: Device Details Screen Tap the three dots (in the upper right corner) to open the Thermostat Details screen. Your Thermostat’s screen should be similar to the one shown below. Device Type Device Name (Tap to Edit) Room (Tap to Edit) Favorite (Red if Favorite, Tap to Edit) Device history... - Page 38 App Functions: Device Details Screen, Continued AUX Heat Tap to AUX heat settings 2 Stage Heat/Cool Tap to 2 stage heat/cool (Y2) settings State Time Tap to sync with mobile Model Number Device EUI Unique Identifier Number Device Serial Number Signal Intensity (From YoLink Hub) Firmware Revision...
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Page 39: App Functions: Schedule
App Functions: Schedule You can set four schedules per day for a week Tap to edit the schedule for this day Tap to copy current day’s schedule to any other days 1. Prevent frequent startups from damaging the HVAC, the cooling and heating set points difference must be at least 2°F (1°C). -
Page 40: App Functions: Eco Settings
App Functions: ECO Settings Under ECO mode, HVAC will automatically adjust the cooling or heating set temperature to a cooler or hotter temperature according to the personalized ECO settings in the YoLink app. For example, the ECO value (adjust temperature) is 5°F, Heating point is 62°F, Cooling point is 80°F, HVAC will automatically adjust the heating point to 57°F (62 minus 5), and cooling point to 85°F... -
Page 41: App Functions: Smart - Scene
App Functions: Smart - Scene Tap to save the settings Name Tap to edit the scene name Sleep Icon Tap to select a scene icon Favorite Tap to make it a favorite scene Assign the scene to a scene group Delete the behavior Add behavior Tap to add a behavior... -
Page 42: App Functions: Smart - Automation
App Functions: Smart - Automation The Thermostat can be set up as an action or in automation. Tap to save the settings Edit the name of the automation Tap to set a schedule for the automation Add behavior Tap to add a behavior Delete the behavior Tap to sort behaviors Always Working... -
Page 43: App & 3Rd-Party Services
App & 3rd-Party Services The YoLink Thermostat 2 works with several voice assistants, such as Alexa, and it works with other automation platforms such as IFTTT and Home Assistant. To set up 3rd-party integrations (Alexa and IFTTT), in the app, go to Settings, Third-Party Services, and follow the instructions. -
Page 44: Firmware Updates
Firmware Updates Your YoLink products are frequently being improved, with new features and functions added over time. It is periodically necessary to make changes to your fob’s firmware. For optimal performance of your Thermostat, and to give you access to any improvements made to your fob’s model, these firmware updates should be installed (added to your Thermostat) when they become available. -
Page 45: Specifications
Specifications Voltage: 24V AC/500mA Temperature Range 40°F-95°F, (Scheduled): (4.4°C-35°C) ECO Setting Range: 2°F-9°F, (1°C-5°C) Calibration Range: -9°F-9°F, (-5°C-5°C) Dimensions, Imperial 4.52 x 4.52 x 0.87 (L x W x D): inches Dimensions, Metric 115 x 115 x 22.2 mm (L x W x D): Environment: Working Temperature: -4°F-122°F... - Page 46 Specifications, Continued 4.52” (115.0mm) 0.87” (22.2mm) FRONT SIDE 4.52” (115.0mm) 0.87” (22.2mm)
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Page 47: Aa Troubleshooting
Troubleshooting SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION 1.) Blown fuse or 1.) Replace fuse or tripped circuit breaker reset breaker 2.) Furnace power 2.) Turn switch to ON switch to OFF 3.) Furnace blower 3.) Replace door panel compartment door in proper position to panel loose or not engage safety properly installed... - Page 48 Troubleshooting, Continued SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION 1.) System switch not 1.) Switch system to set to HEAT HEAT 2.) Loose connection 2.) Verify thermostat to thermostat or wires are securely No Heat system attached Diagnostic: Set mode to HEAT and raise the setpoint above the 3.) Heating system room temperature.
- Page 49 Troubleshooting, Continued SYMPTOM POSSIBLE CAUSE CORRECTIVE ACTION Perform a network Numerous causes reset of the Thermostat is thermostat per section Offline, No Other Devices Online Thermostat is out of Move Hub closer to range from the hub the Thermostat or add a hub If the thermometer is Thermostat and...
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Page 50: Ab Warnings
Warnings This product is powered by 24V AC only. Please do not connect the product to the high or wrong voltage Please install, operate and maintain the Thermostat only as outlined in this manual. Improper use may damage the unit and/or void the warranty Do not install or use the device outside of the temperature and humidity range listed in the... - Page 51 Warnings, Continued Do not install or use this device where it will be subjected to high temperatures and/or open fame Do not install or use this device where it will be subjected to physical impacts and/or strong vibration. Physical damage is not covered by the warranty Please contact Customer Service before attempting to repair, disassemble or modify...
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Page 52: Ac Warranty
This warranty is limited to the repair or replacement of the device, only, at YoSmart's sole discretion. YoSmart will NOT be liable for the cost of installing, removing, nor reinstalling this product, nor direct, indirect, or consequential damages to persons or property resulting from the use of this product. -
Page 53: Ad Fcc Statement
FCC Statement This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. - Page 54 To maintain compliance with FCC’s RF Exposure guidelines, This equipment should be installed and operated with minimum distance between 20cm the radiator your body: Use only the supplied antenna. PRODUCT NAME: YOLINK THERMOSTAT 2 PARTY: YOSMART, INC. TELEPHONE: 831-292-4831 MODEL NUMBER:...
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Page 55: Ae Contact Us
Support Home Page Finally, if you have any feedback or suggestions for us, please email us at feedback@yosmart.com Thank you for trusting YoLink! YoLink Customer Support 25172 Arctic Ocean Drive, Suite 106 Lake Forest, CA 92630 © 2024 YOSMART INC. CALIFORNIA, USA...
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