Ariston Thermal Protection / Overheating Without Displayed Code

Unit starts then stops after a few minutes without any error code; fan may continue to run.

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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.

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Possible Causes

Blocked outdoor airflow, Dirty condenser coil, Overheating compressor, Faulty thermal protector

How to Fix / Troubleshooting

Safety first: Turn off power before cleaning the outdoor unit.

  • Step 1 – Clear surroundings: Ensure at least 30–50 cm clearance around the outdoor unit. Remove any obstructions.
  • Step 2 – Clean condenser coil: Use a soft brush or low-pressure water to clean the coil fins thoroughly.
  • Step 3 – Check outdoor fan: Confirm the fan runs at full speed when the compressor is on. Replace the fan motor if it is slow or intermittent.
  • Step 4 – Technician check: If the unit still stops prematurely, a technician should measure compressor current and check the thermal protector and refrigerant charge.
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Repair Difficulty

Medium 3/5

Required Part

Outdoor Condenser Coil
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