Rain Bird Controller On But Pump Not Starting: Test PS/MV Terminal Voltage

Pump Worked 2 Weeks Ago, Rain Storm Since

Check rain sensor (disable or disconnect). Then test controller output to pump start relay.

Test

1. Find wire on MV or PS terminal.
2. Measure that terminal (+) vs C/common (-) while zone runs.
3. 22–26 VAC → controller OK; fault in relay or its wiring.
4. Low voltage → controller or rain sensor issue.