EWC Controls ULTRA-ZONE ULTRA-TALK UT-3000 Manual page 51

Troubleshooting
Step 2: Check Power Being Supplied to Damper via Board
© 2015 Goodman Manufacturing Company, L.P.

Set meter to ac voltage, and
test power at board output
to the dampers not
responding.

If no power, the 500mA
breaker could be tripped.

Disconnect power to board,
remove damper wires, and
retest.

If power is restored, the
500mA breaker reset itself.

Check disconnected wiring
back to damper for shorts.