EWC Controls ULTRA-ZONE ULTRA-TALK UT-3000 - Symptom 1: LCD & LEDs not responding

©2015GoodmanManufacturingCompany,L.P.
Troubleshooting
 LCD&LED’snotrespondingproperly,andHVACsystemismalfunctioning.
 Communicatingthermostatmaydisplay faultmessages.
Solutions
 CheckHVACsystemandUT‐300024vactransformersforpropervoltage.
 Checksystemwiringforshortsorimproperwiring.
 Testdamperwiresforcontinuity/shorts.
 Checkzonethermostatsforshorts/improperwiring.
 CheckBIASDCvoltages.
Symptom1