Hardie Controller: Pump Won't Start — Test Controller, Relay, Wire, Pump

Pump not running but zones flow at municipal pressure = pump start circuit fault.

Test Sequence

1. At controller: run zone, measure PS/MV to Common → 24–26 VAC?
2. If no → controller bad.
3. If yes, at relay coil → same voltage?
4. If voltage at controller but not relay → wire break.
5. If voltage at relay but no click → relay bad.
6. If all good → pump/motor fault.