Goodman mini-split or inverter condenser displays E5 and compressor does not start or trips quickly

Safety first: Turn off power at the main breaker and outdoor disconnect. High voltage and stored energy are present; do not attempt live testing without proper training.

Steps to check (visual and basic):

• 1. Inspect power connections: Remove the service panel on the Goodman condenser. Check that line power lugs are tight and there are no signs of overheating or melted insulation.
• 2. Check contactor (non-inverter models): Look for pitted or welded contacts. If the contactor is badly burnt, it should be replaced by a technician.
• 3. Listen for compressor: When calling for cooling, listen for a humming or clicking from the compressor. A loud hum with no start may indicate a locked rotor or failed start components.
• 4. Verify supply voltage (if you have a meter and training): Confirm voltage at the contactor matches nameplate requirements. Low voltage can cause overcurrent trips.

When to call a professional: E5 typically requires an HVAC technician to test compressor windings, measure current draw, and evaluate the inverter or start components. Do not attempt to open the refrigerant circuit or replace the compressor yourself.