Nelson EZ Jr Controller: All Valves Pulse On Then One Stays On – Wiring Error

When a station activates, all valves open briefly then only the correct one stays on.

Cause

Common wire and zone wires are cross-connected or touching. Each valve needs:

• One wire to common (daisy-chained).
• One dedicated zone wire to its controller terminal.

Fix

1. Secure common wire connections; separate from zone wires.
2. Ensure no zone wires are spliced together.
3. Verify wiring against diagram: Sprinkler Warehouse.