Heliocol Electrical Noise or Voltage Drop Affecting Controller

Solar controller frequently resets or reboots when pump or other large loads turn on.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Controller and pump on same undersized circuit, Loose neutral or ground connection, Inductive kick from relay coils, Inadequate surge protection

Safety first: Turn off power at the breaker before working on electrical connections.

Check circuit loading: Ensure the controller is on a properly sized circuit that is not overloaded by pump and other equipment.
Tighten connections: Tighten all neutral and ground connections in the equipment panel and controller.
Add surge protection: Install a surge suppressor or line conditioner as recommended for sensitive electronics.
Separate circuits: If possible, power the controller from a separate, stable low-voltage transformer or circuit.

Hard 4/5

Solar Controller Power Transformer

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