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Cooling (Heating) efficiency is not good

Cooling or heating efficiency is poor

York · Air Conditioning

What does Cooling (Heating) efficiency is not good mean?

The air conditioner is not cooling or heating the space as effectively as it should.

Common Causes

  • Dirty air filters
  • Obstructed air inlet or outlet
  • Indoor fan speed set too low
  • Incorrect room temperature setting
  • External heat source in the room

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Clean the air filters.

  2. 2

    Check that the air inlet and outlet vents are not blocked.

  3. 3

    Adjust the indoor fan speed to a higher setting.

  4. 4

    Verify the set temperature is appropriate for the desired cooling or heating.

  5. 5

    Ensure there are no heat-generating appliances or direct sunlight impacting the room.

Browse all codes in this manual (26)
Verified technical data. Last updated: April 2026

Related Faults

Abnormal heat in power supply cord and power plugAbnormal heat in power supply cord or plugAccidental pour of impurities or water into machine or remote controlLiquid or foreign objects inside the unit or remoteAir conditioner can not operate at allAir conditioner will not operate at all
Source: York Air Conditioning
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