How to Check the Refrigerant Level in Your Air Conditioner

If you’re concerned that your air conditioner might be low on refrigerant, it’s important to understand that a Fujitsu General air conditioner is a closed system.
This means the refrigerant is sealed within the system and does not get used up or require regular “topping up.”

If the refrigerant level is low, it usually indicates a leak somewhere in the system that must be found and repaired by a licensed refrigeration technician.

What the Technician Will Do

  1. Recover and Measure the Refrigerant
    The technician will safely recover all refrigerant from the system and weigh the amount collected.
    This is then compared with the factory-specified refrigerant charge listed on the unit’s nameplate.

  2. Check for Leaks
    If the recovered amount is less than specified, the technician will:

    • Inspect both the indoor and outdoor units for visible signs of leakage.

    • Check the connecting pipework, joints, and flare fittings for small or hidden leaks.

  3. Repair and Re-Evacuate the System
    Once any leaks are repaired, the system will be evacuated (vacuumed) to remove air and moisture.
    This step is essential to protect the compressor and maintain system performance.

  4. Recharge the System
    The technician will then weigh in the precise refrigerant charge as shown on the unit’s nameplate.
    Correct refrigerant levels are critical for efficient operation and long-term reliability.

Important Warranty Information

If this inspection takes place as part of a warranty service, please note:

  • The refrigerant circuit is sealed at installation, so checking or repairing leaks caused by installation issues is not covered under warranty.

  • Fujitsu General’s warranty applies to manufacturing defects, not to workmanship or damage from external causes.

In Summary

Your Fujitsu General air conditioner is a closed, sealed system — it does not require routine refrigerant top-ups.
If your system isn’t cooling or heating properly and you suspect low refrigerant, it’s best to contact a licensed air conditioning technician or a Fujitsu General Authorised Service Agent.
They will test, locate any leaks, and correctly restore the refrigerant charge to ensure your system performs as designed.