tekmar 479 User Switch Installation - Manual (Page 3)

3 of 4 © 2007 D 479 - 05/07
Error Messages
Error Messages & Troubleshooting
Applications using Multiple User Switches
Multiple User Switches can be used together when:
1) For convenience, User Switches are required at different
locations.
2) Scenes other than the three pre-programmed scenes
in the 479 are requried. In this case, a 480 or 481 User
Switch can be added.
Symptom Cause Corrective Action
3 Buttons
Flashing Red
Away
User Switch
disconnected from
tN4 bus.
• • Check tN4 and common
wires for loose wire
connections.
• • Ensure the tN4 controls have
power.
• • Check R and C wires for
correct polarity.
Each tN4 bus cannot exceed 24 devices. Devices include
thermostats, setpoint controls, mixing expansion modules,
and user switches.
When using multiple User Switches at the same location,
they can be installed adjacent to each other in the same
switch box.