Toro Vision 1: All 7 Zones On Simultaneously—Controller Failure

Toro Vision 1 Powers All Zones at Once: Terminal Fault

First startup of year. All 7 zones trickle water. Valves manually closed. Pressure normal.

Diagnosis: Hot Terminal on Controller

The controller has a shorted output terminal energizing all zones simultaneously. This is a known failure mode for aging Vision 1 controllers.

Fix: Replace Controller

1. First, check wiring: ensure common wire (white) isn't touching zone wires.
2. If wiring clean → replace controller. Vision 1 units are obsolete and failure-prone.

Don't waste time troubleshooting—replace it.