GE air conditioner shows E5 and may shut down compressor or fan unexpectedly

Safety: Unplug the unit. High voltage and high current are present; if you are not experienced with electrical testing, contact a technician.

Basic checks:

• Verify power supply: Plug the unit into a dedicated outlet. Avoid extension cords or power strips. Use a multimeter to confirm voltage is within the range specified on the rating plate (typically 115V ±10% or 230V for some models).
• Reset: Unplug for 10 minutes, then plug back in and try again. If E5 reappears quickly, continue diagnosis.
• Inspect wiring: Remove the front panel and control cover. Check for burnt wires, melted connectors, or signs of overheating near the compressor relay on the control board.
• Compressor condition (visual): From the rear (with cabinet removed), inspect the compressor terminals and overload protector for discoloration or burnt smell.
• Fan operation: Ensure the condenser fan motor runs freely and is not seized, as a stalled fan can cause high current draw and E5.
• If compressor or wiring is burnt: Do not attempt to run the unit. This requires professional repair or replacement of the compressor and possibly the control board.
• If supply voltage is unstable: Correct the electrical supply issue (dedicated circuit, electrician inspection) before using the unit again.

Warning: Testing compressor windings and current draw should be done only by qualified personnel with proper tools.