PA: AC Current Protection
PA TROUBLESHOOTING STEPS:
Safety Note: Before any component is electrically disconnected in the unit, shut off main power. Inverter board DC bus voltage can take up to 15 min to discharge.
Caution: Do not plug or unplug components while electrical power is present, this can damage the equipment and control boards.
Step 1: Check for High Voltage
Measure the voltage supplied to the unit to ensure it is within the specified range. Use a multimeter to check the incoming voltage at the designated connection points.
If the voltage is too high, it can trigger the AC current protection. Investigate the cause of the high voltage, which may involve issues with the power supply or electrical circuit.
Inspect the main power connections and look for any loose or damaged wiring that could lead to voltage irregularities.
Ensure that the unit is properly grounded, and there are no issues with the electrical distribution system.