Yolink YS4003-UC Mode d’emploi
YoLink Thermostat
(Heat Pump Compatible)
YS4003-UC
Installation Manual & User Guide
Rev 1.1
March 29,2023
SECTION TOPIC PAGE
A Welcome! 1
B Before You Begin 2
C What's in the Box? 3
D Install the YoLink App 4
E Add Your Thermostat to the App 6
F Prepare for Installation 8
G Installation 9
H Get to Know Your Thermostat 13
I Set the Cooling or Heating Setpoint 14
J Navigating the Menu System 15
K Schedules: Editing & Copying 16
L Y & Aux Config 19
M Date & Time 20
N Temperature Settings 21
O Display & Sound 22
P Factory Reset 23
Q App Functions: Device Screen 24
R App Functions: Device Details Screen 26
S Automation 28
T Voice Assistants & Integrations 29
U Troubleshooting 30
V CE Mark Warning 31
W FCC Statement 32
X 1-Year Warranty 33
Y Warnings 33
Z Contact Us & Customer Support 34
TABLE OF CONTENTS
Congratulations on the purchase of your YoLink Thermostat!
When connected to the internet via one of our hubs, you can
manage and control your thermostat remotely, including
changing the set temperature, the mode and schedule. The
YoLink Thermostat is the perfect choice if you travel, own a
vacation home, business or rental property, or simply want
the peace of mind of a smart thermostat with 24/7 remote
access and supervision.
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.
See the Contact Us section for more info.
Thank you!
Eric Vanzo
Customer Experience Manager
Welcome!
A
User Guide Conventions
To assure your satisfaction with your purchase, please read
this user guide we have prepared just for you. The following
icons are used to convey specific types of information:
Very important information (can save you time!)
1
Good to know info but may not apply to you
Mostly unimportant (it’s ok to breeze past it!)
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. Please contact
us for additional information and technical support on this
topic.
Please also note, your smart Thermostat connects to the
internet via one of our hubs (original YoLink Hub or the
SpeakerHub), and it does not connect directly to your WiFi or
local network. In order for remote access to the Thermostat
from the app, and for full-functionality, a hub is required.
Otherwise, your Thermostat will have limited functionality with
no remote access. Please contact us for additional information
on this topic.
Before You Begin
B
2
This thermostat works with common single-stage 24 volt
systems such as forced air, hydronic, heat pump, oil, gas, and
electric. It will not work with millivolt systems, such as a gas
fireplace, or with 120/240 volt systems such as baseboard
electric heat.
Need Help?
Please contact us via the Contact Us section of this user
guide, for assistance, before returning your Thermostat.
ThermostatQuick Start Guide
Mounting Plate
(“Back Plate”)
Screws (2)
Drywall Anchors (2)
xxxxxx
xxxxxx
xxxxxx
xxxxxx
xxxxxx
xxxxxx
Wire Labels
What’s in the Box?
C
3
Retain your username and password in a secure location
If you encounter an error message attempting to create
an account, disconnect your phone from WiFi, and try
again, connected only to the cellular network
Apple phone/tablet
iOS 9.0 or higher
Android phone/tablet
4.4 or higher
Install the YoLink App
D
If you are new to YoLink, please install the app on your phone or
tablet, if you have not already. Otherwise, please proceed to part
E.
Scan the appropriate QR code below or find the “YoLink app” on
the appropriate app store.
Open the app and tap Sign up for an account. You will be
required to provide a username and a password.
Follow the instructions, to set up a new account
Allow notifications, if prompted.
1
4
Install the YoLink App, Continued
5
. You will
D
QR code scanner icon
You will immediately receive an email from
no[email protected] with some helpful information. Please
mark the yosmart.com domain as safe, to ensure you receive
important messages in the future.
2
Log in to the app using your new username and password. The
app opens to the Favorite screen, as shown. This is where your
favorite devices will be shown. You can organize your devices by
room, in the Rooms screen, later.
3
Tap Add Device (if shown) or tap the scanner icon
3
XXX
6
Add Your Thermostat to the App
E
Approve access to the camera, if requested. A viewfinder will be
shown on the app.
4
Hold the phone over the QR code (on the rear of the thermostat)
so that the code appears in the viewfinder. If successful, the Add
Device screen will be displayed
5
Refer to Figure 1 on the next page. You can edit the name of the
Thermostat, and assign it to a room, if desired. Tap the Favorite
heart icon to add this device to your Favorites screen. Tap Bind
device
6
Approve access to your phone’s camera, if requested.)
Hold the phone over the QR code (on the underside of
the hub) so that the code appears in the viewfinder. If
9
Figure 1 Figure 2
If successful, close the Device Bound pop-up message by tapping
Close
7
Tap Done as shown in Figure 2.
8
If this is your first YoLink system, please visit our product support
area at yosmart.com for an introduction to the app, and for
tutorials, videos, and other support resources.
Add Your Thermostat to the App, Cont.
E
7
Ensure your YoLink Hub or SpeakerHub is setup and online before
proceeding to the next step.
9
Prepare for Installation
F
The following items may be required for the installation of
your Thermostat:
Medium Phillips Screwdriver Small Slotted Screwdriver
Pencil
Level
Alternative Mounting Hardware
Drill with Drill Bits Multimeter
8
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