Cooler’s control panel is showing an error code.

E1 – Over Current Protection

Current draw is too high.

  • Check extension cord size.
  • Check that motor spins freely.
  • Check that airflow is not obstructed.
  • Replace motor.

E2 – Over Voltage Protection

Supply voltage is too high (≥ 132 V).

  • Try a different circuit.
  • Install a voltage regulator.

E3 – Low Voltage Protection

Supply voltage is too low (≤ 108 V).

  • Try a different circuit.
  • Install a voltage regulator.

E4 – Loss of Phase Protection

Motor phase imbalance.

  • Check for loose or disconnected motor wire.
  • Replace motor.

E7 – Overload Protection

Motor is running too hot.

  • Check extension cord size.
  • Check that motor spins freely.
  • Check that airflow is not obstructed.
  • Replace motor.

F6 – Communication Failure

Communication failed between control panel and control board.

  • Check control cable connection.
  • Check that control cable is not broken.
This applies to these products: Cold Front 500

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