Heat pump heater shows E09; unit may trip breakers or not start.

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

Shorted compressor, Shorted fan motor, Wiring short to ground, Faulty current sensor on PCB

Safety first: Turn off power at the breaker. Do not repeatedly reset a breaker that trips immediately.

Visual inspection: Look for burnt wires, melted insulation, or scorch marks inside the electrical compartment.
Isolate components: A qualified technician can disconnect the compressor and fan to determine which component is causing overcurrent.

Due to shock and fire risk, E09 faults should be handled by a licensed electrician or refrigeration technician.

Professional Required 5/5