Toro Vision II Controller Fuse Keeps Blowing: Transformer Voltage Check

Right Fuse Blows Immediately on Toro Vision II

The right fuse (¾ A) protects the controller from excessive input voltage. If it blows instantly, the transformer is likely outputting too high a voltage.

Test Transformer Output

1. Measure AC voltage at the controller’s 24 VAC input terminals.
2. Reading should be 22–25 VAC. Higher voltage means the transformer is faulty—replace it.

The left fuse protects against field wiring/solenoid shorts; since the right fuse blows, the issue is on the power‑input side.