A7D9 : Unexpected Current Gun 5
To avoid serious injury follow all warnings and instructions in the manual. Wear appropriate personal protective equipment.
- Swap in known good gun.
- Swap in known good hose.
- Check for damaged wiring inside the gun manifold that could cause a short circuit to the grounded gun body.
- Check gun heater resistance to ground at the gun connector.
- See connector wiring diagram in the corresponding gun instruction manual.
- Replace faulty gun heater.
- Replace faulty AMZ circuit board.
- Replace faulty MZLP circuit board.