Unit shows EC and stops cooling; may restart and then show EC again.

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

Leak in evaporator coil, Leak in condenser coil, Loose flare joints on line set, Faulty leak detection algorithm or sensor

Safety first: Do not attempt to tighten refrigerant joints with the system pressurized unless you are qualified.

User-level steps:

Visual check: Look for oily stains on indoor and outdoor coils and at flare connections.
Check airflow and filters: Ensure airflow is not restricted, as this can trigger false EC codes.
Power reset: Turn off power for 10 minutes, then restart and monitor operation.

Technician-required: A certified technician must locate leaks, repair them, evacuate, and recharge the system to the exact Tristar specification.

Professional Required 5/5

Evaporator Coil

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