EWC Controls ULTRA-ZONE ULTRA-TALK UT-3000 Manual page 53

Troubleshooting
Check Transformer Voltage

Set meter to ac voltage, and test
power at terminals R and C on
UT‐3000.
© 2015 Goodman Manufacturing Company, L.P.

If no 24VAC present, test transformer
supplying power to UT‐3000.