Klarstein Cooling Mode Failure / Reversing Valve or Refrigerant Issue

Klarstein air conditioner blows warm air in cooling mode.

Advertisements

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.

Advertisements

Possible Causes

Unit accidentally set to heat or fan mode, low refrigerant charge, stuck four-way valve (heat pump models), compressor not running, blocked condenser

How to Fix / Troubleshooting

Safety: Unplug before internal inspection; refrigerant work must be done by a professional.

Steps:

  • Verify mode: Confirm the unit is set to Cool mode and not Heat or Fan.
  • Check compressor: Listen for compressor operation. If only the fan runs, see the "Compressor Not Starting" scenario.
  • Clean coils: Clean both indoor and outdoor coils and ensure fans are running.
  • Heat pump valve: On heat pump models, if the unit heats when set to cool, the four-way valve may be stuck. This requires a technician to diagnose and possibly replace the valve or coil.

If airflow is good and compressor runs but air remains warm, the refrigerant charge is likely incorrect and must be checked by a licensed technician.

Advertisements

Repair Difficulty

Hard 4/5

Required Part

Four-Way Reversing Valve (Heat Pump Models)
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements