Indoor unit shows E5; compressor may not start or stops quickly; sometimes accompanied by humming from outdoor unit.

Safety: This fault involves high current and compressor protection. Turn off power at the main breaker. Do not bypass any safety devices.

Basic checks (user-level):

• Ventilation: Ensure the outdoor Gorenje unit has at least the recommended clearance on all sides and is not blocked by debris, plants, or covers.
• Outdoor fan: With power off, spin the outdoor fan blade by hand. It should rotate freely without scraping. Remove any obstructions.
• Power supply: Confirm the breaker is correctly rated and not tripping repeatedly. If lights dim when the unit starts, have an electrician check supply voltage and wiring.

Advanced checks (technician recommended):

• Measure compressor winding resistance and insulation.
• Check outdoor PCB for burnt components or loose terminals.
• Verify running current against Gorenje nameplate data.

If E5 recurs after ensuring airflow and supply are correct, contact a qualified HVAC technician; compressor or inverter PCB replacement may be required.