Code 5443: “enginefan - voltage low” (Warning)

Situation

Solution

Malfunction SMPS module. All other fans also report voltagelow error.

Replace the SMPS module.

Damaged insulation of the wire unit (reference C ) of the fan (reference F3) in the compartmentof the Light Processor Unit. Note that this fan is located betweenthe compartment of the Input & Communication Unit and the Compartmentof the Light Processor Unit.

Check the insulation of the wire unit of the fan. The fan isaccessible by removing a small cover plate inside the compartmentof the Input & Communication Unit.

  1. Repair the insulation of the wire unit using shrink sleeve.

  2. If not repairable, replace the whole wire unit and/or fan.

Malfunction Fan & Motor Control board.

Replace the Fan & Motor Control board.

Malfunction Power Backplane (bad connection)

Replace the Power Backplane.