Problem
Possible Cause
Solution
Wi-Fi connected but
weather info missing
Unknown location
Enter ZIP/Postal Code Menu > Settings > Services & Voice > Weather
Heating (orange
setpoint screen), but
floors do not feel
warm
Setpoint too low to feel
warm to the touch
Increase the setpoint
Faulty wiring
Have the sensor and power lead wiring checked by a certified electrician
Display is off
Thermostat in off mode
To resume operation, touch the display for power on option
Power off at the breaker
Check the breaker or fuse in the electrical panel supplying power to the thermostat
Faulty Wiring
Have the power supply wiring checked by a certified electrician
Heat is on before the
scheduled time
Smart Start feature enabled
Floor heating will begin early to meet the scheduled temperature on time
Memory Error
Thermostat cannot read its
settings
Verify all settings or reload factory defaults Menu > Settings > Reset > Factory Reset
Floor Sensor Error
Faulty sensor or wiring
Have the sensor resistance and wiring checked by a certified electrician
Replace wired sensor
Pair ConnectPlus Smart Sensor and accept to use as floor temperature
It is strongly recommended that a qualified, licensed electrician install the heating cables and related electrical components. If problems
with the system arise, please consult the troubleshooting guide below.
Troubleshooting Guide
SunTouch warrants this control (the product) to be free from defect in material and workmanship for a period of (3) years from the date of original purchase from authorized
dealers. During this period, SunTouch will replace the product or refund the original cost of the product at SunTouch’s option, without charge, if the product is proven
defective in normal use. Please return the control to your distributor to begin the warranty process.
This limited warranty does not cover shipping costs. Nor does it cover a product subjected to misuse or accidental damage. This warranty does not cover the cost of
installation, diagnosis, removal or reinstallation, or any material costs or loss of use.
This limited warranty is in lieu of all other warranties, obligations, or liabilities expressed or implied by the company. In no event shall SunTouch be liable for consequential
or incidental damages resulting from installation of this product. Some states or provinces do not allow limitations on how long an implied warranty lasts, or the exclusion
or limitation of incidental or consequential damages, so the above exclusions or limitations may not apply to you. This warranty gives you specific legal rights and you
may also have other rights that vary from state to state.
Limited 3 Year Warranty
Operation
Any electrical troubleshooting work should be performed with the power removed from the circuit, unless otherwise noted.
SunTouch Customer Support
USA Toll-free: (888) 432-8932
Canada Toll-free: (888) 208-8927
Latin America Tel: (52) 81-1001-8600
SunTouch.com
©2022 Watts
Power Up
• Switch on the circuit power supply at the breaker
• The ConnectPlus will load stored settings into memory
Heating Operation
By default, the ConnectPlus controls the heating system to
maintain the floor temperature at the setpoint of 85°F (29°C).
Room temperature control can be selected in the Temperature
Settings. Floor and Room maximum settings are also available
to limit temperatures.
GFCI Testing and GFCI Light Operation
• Press the TEST button on the GFCI monthly to verify that it is
operational. The GFCI RESET light will flash red. To resume normal
operation, press the RESET button.
• If pressing TEST does not display a flashing red GFCI RESET light,
protection is lost, and the unit will need replacement.
• If the GFCI RESET light continues to flash after pressing
the RESET button, protection is lost, and the unit will need
replacement.
• If the GFCI trips during normal operation, press the RESET button
to resume operation. If it trips again, the floor heating system should
be inspected and tested by a qualified electrician.
• If the GFCI TEST light stays on solid, a welded relay has occurred,
and the unit will need replacement.
Power Off
• Menu > Power > Power Off
• To resume operation, touch the display for power on option
Home/Away Settings
• Menu > Home/Away
• Home mode is normal operation
• In Away mode, the heating system is controlled to the Away
temperature
• Set Floor or Room Away corresponding to Temperature Settings
Control
• Away mode is entered from the Menu, the mobile app, voice
services, or a home automation system
Temperature Settings
• Menu > Settings > Temperature
• Floor and Room Max are used to protect temperature-sensitive
flooring or prevent space overheating
• “MAX” displays when the floor or room has reached its maximum
allowed temperature
• Control determines whether the floor or room temperature will
be controlled
• Weather Compensation adjusts heating operation to compensate
for changing weather conditions
• Warm Weather Shut Down saves energy by turning off the
heating system when the outdoor temperature is above the
setting
• Floor and Room Offsets allow for corrections to the sensor readings
Services & Voice Settings
• Menu > Settings > Services & Voice
• Weather uses the ZIP/Postal Code to get local weather data
• Watts Home registers the device to the mobile app
• See Voice Control for a link to setup
Display Settings
• Menu > Settings > Paired Devices > Pair Device
• Select Language, Orientation, screen Brightness and Timeout
• If the Schedule is enabled, set screen Brightness for Wake/
Return and Leave/Sleep
• If enabled, the Night Light will keep the screen on from dusk
to dawn
• Clean Screen allows the screen to be cleaned without affecting
operation
Pair Devices Settings
• Menu > Settings > Pair Devices
- Press and hold RESET button on the R4 Relay for 3 seconds
- Press and hold the button on the ConnectPlus Smart Sensor
for 3 seconds
• The list of paired devices is shown
• Limit of 6 paired devices
• Any mix of SunStat
®
R4 Relays and ConnectPlus Smart Sensors
Make sure the mortar has had time to fully cure before operating the system for more than a brief test.
Before first using the Wi-Fi features of this product, you must accept the Terms of Use, as amended from time to time and available
at https://www.watts.com/terms-of-use. If you do not accept these terms, this product can still be used without Wi-Fi features.
Touchscreen Operation
IOM-ST-ConnectPlus Thermostat 2202 EDP# 81021014
Schedule
• Menu > Schedule
• The default schedule has a Weekdays program and a Weekends
program (the default is Schedule Off)
• To edit the time or temperature for a Wake, Leave, Return, or
Sleep event select the day group
• To create a new schedule, select Change Days
• Smart Start will begin heating the floor early to meet the
scheduled temperature on time
Notifications
• Firmware Update
New firmware is available for the device
•
Ground Fault
A ground fault has been detected
• Welded Relay
The device must be replaced
• Over Current Erro
r
The current limits of the device have been exceeded
• Voltage Error
The line voltage does not match the heating mat/cable
• Floor Sensor Error
The floor sensor is disconnected or needs to be replaced
• Memory Error
Programming may be lost—verify all settings
• Water Leak
The ConnectPlus Smart Sensor has detected moisture
• Low Battery/Sensor Lost
Replace the batteries in the ConnectPlus Smart Sensor
Remote Access Setup
• Download the Watts
®
Home mobile app from the Apple
App Store or Google Play
• Create an account and/or sign in
• On a Location page, select Add New Device
• On the ConnectPlus, get a registration code either from the
guided setup or from Menu > Settings > Services & Voice >
Watts Home
• Enter the registration code on the mobile app, name your
device, and save
• To disable mobile access, go to Menu > Settings >
Services & Voice > Watts Home
Tap here to change the display
• Floor temperature
• Room temperature
• Weather info
• Date
• Clock
Notes
• “MAX” indicates floor or room
has reached its maximum allowed
temperature
• “+” indicates Second Stage
is active
Wi-Fi Status
Tap to access settings
Menu
Tap to open
Chevrons
Tap to adjust the setpoint
Swipe left/right to change the Home
Screen Setpoint/Weather/Clock
Tap pin on Weather/Clock to pin as
the Home Screen on screen wakeup
Menu
Display
Language
English, Español, Français
Orientation
Portrait, Landscape
Brightness
30% to 100%
Timeout
Never, 30 sec, 1 min, 2 min, 5 min
Night Light
Off, 30% to 100%
Pair Devices (# paired)
Wireless pairing mode
Reset
Factory Reset
Delete all settings, reload factory
defaults
Unpair Devices
Unpair wireless devices
Reboot Device
Reset device
SCHEDULE
Schedule
On, Off
Smart Start
On, Off
(days)
Edit Wake/Return/Leave/Sleep settings
Change Days
Create new schedule
Usage
YEARLY, WEEKLY
ABOUT
Model Name
Model Number
Software
Event Log
POWER
Power Off
Touch display for power on option
Cable/Mat
Voltage
120 V, 240 V
Cable/Mat
Current
1 A to 15 A
Second Stage
Off, 2°F to 10°F (1°C to 5.5°C), 0 min to 60 min
Momentary Test
Test system against Cable/Mat Voltage & Current
Diagnostics
Voltage, Amp Draw, Sensor readings
Notifications
HOME/AWAY
Away
On, Off
Floor Away
Off, 40°F (4.5°C) to Floor Max
Room Away
Off, 40°F (4.5°C) to Room Max
SETTINGS
Temperature
Units
°F, °C
Floor Max
40°F to 99°F (4.5°C to 37°C)
Room Max
Off, 60°F to 95°F (15.5°C to 35°C)
Control
Floor, Room
Weather Compensation
On, Off
Warm Weather Shut
Down
Off, 40°F to 99°F (4.5°C to 37°C)
Floor Offset
Off, -5°F to 5°F (-2.5°C to 2.5°C)
Room Offset
Off, -5°F to 5°F (-2.5°C to 2.5°C)
Date & Time
24-Hour Time
On, Off
Set Automatically
On, Off
Date
Time
Time Zone
HT, AKT, PT, MT, CT, ET, AT, NT
Daylight Savings
On, Off
Wi-Fi
Wi-Fi
On, Off
Network
Signal Strength
Services & Voice
Weather
ZIP/Postal Code
Watts Home
Connect to mobile app
Voice Control
Info on setup
