F5 error, unit shuts down shortly after starting in very hot conditions
Safety Warning
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
How to Fix / Troubleshooting
Safety first: Disconnect power before cleaning or servicing. Components may be hot immediately after shutdown.
- Step 1 – Improve ventilation:
- Ensure at least the manufacturer-recommended clearance around the unit (typically 30–50 cm from walls or obstacles).
- For portable units, verify the exhaust hose is short, straight, and properly vented outdoors.
- Step 2 – Clean condenser coil and fan:
- Remove rear panel to access the condenser coil and fan.
- Clean dust and lint from the coil fins and fan blades.
- Step 3 – Check fan operation:
- Reassemble, power on, and observe the condenser fan in COOL mode.
- If the fan does not start or is slow/noisy, replace the Pro Breeze Condenser Fan Motor.
If F5 persists in normal ambient temperatures with good airflow, a refrigerant or sensor issue may exist and should be checked by a technician.
Repair Difficulty
Required Part
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