Soleus Air Heat Pump Heating Failure

Soleus Air AC in heat pump mode (if equipped) does not produce warm air; blows cool or room-temperature air.

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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

Reversing valve not shifting, Low refrigerant charge, Outdoor coil iced over, Faulty temperature sensor

How to Fix / Troubleshooting

Safety: Unplug the unit before accessing internal components. Heat pump and refrigerant work require a licensed technician.

  • Check mode and setpoint: Confirm the unit is in HEAT mode and the set temperature is above room temperature.
  • Inspect outdoor coil: For through-the-wall or window heat pump units, check the outdoor coil for heavy frost or ice. If iced, allow defrost or switch to FAN-only until clear.
  • Listen for reversing valve: When switching between HEAT and COOL, you may hear a brief whoosh or click. If not, the reversing valve coil or control may be faulty.
  • Professional service: Diagnosis of reversing valve, refrigerant charge, and defrost control should be done by a qualified HVAC technician.
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Repair Difficulty

Professional Required 5/5

Required Part

Reversing Valve Coil
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