3801923 Charging Switch Unit Reman | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta remanufactured charging switch unit from the Alternator, Charging, Electric Motor and Electric Drives group, listed for 2 applications across the HPCU and TB series. It is part of the electric drive and battery installation rather than the diesel engine, so the system it belongs to has to be identified before ordering. This unit is supplied on an exchange basis: core deposit 3804923 is charged alongside it and refunded once the old unit is returned, so both numbers appear on the order.

🚤 Compatibility

Typically suits:

• Volvo Penta HPCU-A
• Volvo Penta TB66-150-A

• Engine Family: HPCU, TB

⚙️ Key Features

• 2 listed applications across the HPCU and TB series
• Remanufactured exchange unit
• Part of the electric drive and charging installation

🔌 Function

Switches and isolates the charging path into the battery system, connecting it when the control system calls for charge and separating it when it does not.

⚠️ Common Signs of Failure

• Charging will not start, or stops shortly after connecting
• Fault codes from the charging or battery system
• Contactor heard chattering, or not heard operating at all
• Burnt smell or discoloured terminals at the unit
• Charge current far below normal for the installation

🛠️ Service Notes

• This sits in a high-voltage system - it must only be worked on by a technician trained and equipped for the isolation procedure
• Confirm the system configuration before ordering; several units in this family share a common description
• Check the cable terminations and their torque, and have the system fault codes read before and after fitting
• Core deposit 3804923 is charged with this unit and refunded when the old one is returned - order both together

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging