Troubleshooting - TCS UbiquiSTAT US4050 Configuration Manual

Configuration

Troubleshooting

This section discusses the most common issues users encounter when using their UbiquiSTAT room controller. Before
contacting TCS Technical support, try the remedies shown here.
If you are still experiencing issues with your UbiquiSTAT room controller, do not hesitate to contact TCS Technical Support
at 800-288-9383, ext. 2. Our Technical Support Department hours are Monday – Friday, 7:00 a.m. to 7:00 p.m. (CST).
Issue
No display
Fan does not come on (
is animated to indicate the fan
is on)
Heating or cooling does not
come on when UbiquiSTAT
is calling ( or icon is
showing on display)
Wrong temperature display
• UbiquiSTAT is overcooling or
underheating
21 21
Probable Cause(s)
• No power to the device
• Front cover not properly seated
• Faulty wiring
icon
• Faulty relay
• Incorrect programming
• Faulty wiring
• Faulty relay
• Room temperature is above the cooling
setpoint or below the heating setpoint
• Ubiquistat not properly calibrated
• Remote sensor defective or Ubiquistat is not
properly calibrated for lead resistance
• Weighting value for room temperature source
is incorrect
• UbiquiSTAT is placed too close to an air vent,
in direct sunlight, or air is coming in through
the wiring opening in the wall
• The room temperature does not match the
temperature displayed
2800 Laura Lane • Middleton, WI 53562 | 800.288.9383 | www.tcsbasys.com
Solution
• Remove cover and check for 24 VAC (22.8 to
27.6 VAC) on terminals labeled "+/- 24V".
• Replace the cover and check for proper fit.
• Ensure the two internal board connectors snap
into place.
• Check wiring
• Check system modes
• Connect a jumper between the "R" and "G"
terminals to see if the fan comes on. If the fan
comes on, the relay in the thermostat may be
faulty, or programming is incorrect.
• Check wiring
• Check for a relay failure by connecting a jumper
across terminals "R" to "W1"; the heating
should turn on. Connect a jumper across
terminals "R" to "Y1"; the cooling should come
on. If this does not happen, check the relay.
• Fine-tune the temperature calibration based
on the configuration of your system. Refer to
"Temperature Calibration" on page
• Adjust the weighting value for the room
temperature source. Refer to
Temperature Source" on page 14
• Relocate the UbiquiSTAT
• Redirect the air flow from vents
• Seal the wall where the wires enter the
UbiquiSTAT
• Use a remote sensor
• Adjust the calibration dettings for the
room temperature source. Refer to
Temperature Source" on page 14
14.
"Room
"Room