Royal Clima Insufficient Heating Performance

The unit does not heat properly in HEAT mode, blowing lukewarm or cold 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

Outdoor temperature below the heat pump's operating range, outdoor unit coil covered with ice, low refrigerant charge, or the reversing valve not switching correctly.

How to Fix / Troubleshooting

Safety first: Turn off the power before removing ice or snow from the outdoor unit.

  • Step 1 – Check outdoor conditions: Verify that the outdoor temperature is within the heating range specified by Royal Clima. In very low temperatures, capacity drops significantly.
  • Step 2 – Inspect for ice buildup: If the outdoor coil is heavily iced, allow the unit to complete defrost cycles. Clear snow around the unit.
  • Step 3 – Verify mode and setpoint: Ensure the unit is in HEAT mode with a set temperature at least 3–5°C above room temperature.

When to call a technician: Persistent poor heating with normal defrosting may indicate low refrigerant or a faulty reversing valve, requiring professional repair.

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Repair Difficulty

Medium 3/5

Required Part

Reversing Valve
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