EWC Controls ULTRA-ZONE ULTRA-TALK UT-3000, Manual

Page: 43 / 56

© 2015 Goodman Manufacturing Company, L.P.
Troubleshooting

Only one device should set the bias on any
ComfortNet controlled system.

Never move the bias switches on the
communicating furnace or air handler.

If necessary, move the bias
switches on the outdoor unit.

Never move the termination
switches on the zone controller.

The zone controller switches
should remain in the off position.
Bias Data Voltages