Variable-speed Onga pump shows E07 and stops, often when changing speeds.

Safety: Disconnect power and wait several minutes for internal capacitors to discharge before opening any control covers.

• Reset the controller: Turn off power at the breaker for 5 minutes, then restore power and attempt to restart the pump.
• Check control connections: Inspect low-voltage harnesses between the Onga control keypad and drive module for loose or corroded plugs. Reseat connectors firmly.
• Inspect for damage: Look for burn marks or a burnt smell from the control housing. Any visible damage indicates the drive PCB should be replaced.
• Ventilation: Ensure the control module is not enclosed in a sealed box without airflow. Overheating can trigger drive faults.

Persistent E07 indicates an internal drive fault. Replacement of the control/inverter module or complete pump is usually required and should be done by an authorized Onga service agent.