Hunter Controller Troubleshooting: Common Irrigation Issues

Hunter controller troubleshooting starts by determining whether the problem is power/programming related or whether the controller is working but the irrigation field circuit is not. A dead display, one failed station and an entire system that will not water point in different directions.

If the Hunter controller is blank

Check whether the unit has power and note whether the problem followed an outage or storm. A blank controller is different from a powered controller whose valves do not respond.

If only one station fails

One station can fail because of the station output, field wire, splice, solenoid or valve. If the other zones work, shared water supply and controller power are less likely.

If several stations fail

Look for shared causes such as the common wire, a field-cable problem, master valve or controller-side issue. See what the common wire does.

If watering times are wrong

Review all programs and start times. Old programs can remain enabled after seasonal changes, and multiple start times can create repeated cycles.

If the controller runs but sprinklers do not

A station indicator is not proof of water flow. The controller, field wiring, solenoid, valve and water supply form a chain; a failure anywhere can stop the zone.

Sensor-related behavior

Rain-sensor settings and bypass states can affect watering. Before assuming a hardware failure, note any sensor status shown by the controller.

Repair or upgrade?

A controller should not be replaced solely because a valve or wire has failed. Replacement makes more sense when the controller electronics are defective, capacity is inadequate, the enclosure is deteriorated or the homeowner wants smart-control features.

Fort Mill Irrigation provides smart irrigation controller service and troubleshooting for existing residential systems.

Frequently asked questions

Can a Hunter controller show a station running when the valve is not open?

Yes. The display reflects the controller command, not confirmation of hydraulic flow at the valve.

Can a broken common wire disable multiple Hunter zones?

Yes. A shared common-wire fault can affect several valves depending on where the break occurs.

Is a controller replacement the first fix for intermittent zones?

No. Intermittent field wiring, wet splices, solenoids and valves should also be considered.

Need help troubleshooting a Hunter sprinkler controller in Fort Mill or a nearby community? Call or text Fort Mill Irrigation at (803) 710-8008.