A8AC : No Current Unit A Zone 12

To avoid serious injury follow all warnings and instructions in the manual. Wear appropriate personal protective equipment.

  • Check for loose or disconnected wires or plugs.  
  • Check for blown fuses on MZLP.  
  • Check heater resistance for open circuit.  
  • Check for shorts between heater and ground.  
  • Verify cable is plugged into zones 3-4.  
  • Replace heater is necessary.