Unit displays E7 and will not start compressor; sometimes occurs after installation or wiring changes.

Safety first: Turn off power at the outdoor disconnect. Ensure the fan is not moving before working near the blades.

Steps to try:

• Inspect fan blade: Check for sticks, leaves, or ice blocking the fan. Remove obstructions and ensure the blade is not bent and can spin freely.
• Check wiring and connector: Open the service panel and verify the fan motor connector is secure and wires are intact.
• Examine capacitor (if fitted): On non-inverter Tristar units, the fan may share a capacitor with the compressor or have its own. Replace if bulged or leaking.
• Test operation: Restore power and observe if the fan starts. If the compressor runs but the fan does not, shut down immediately to avoid high-pressure damage.

When to call a technician: A non-spinning fan with correct voltage present indicates a failed motor that should be replaced by a professional.