Refrigerant Leak / Shortage

Was bedeutet E57 ?

This indicates a refrigerant leak or shortage of refrigerant (specific to FDCVA151-251 models), leading to insufficient cooling or heating performance. A low refrigerant charge can cause compressor overheating and damage.

• Insufficient refrigerant charge in the system leading to low operating pressures.
• Significant leak in the refrigerant lines or components.
• Blockage in the liquid or suction line restricting refrigerant flow.

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1. 1

   Perform a thorough leak test on the entire refrigerant circuit using an electronic leak detector, focusing on all joints and connections.

2. 2

   Recover any remaining refrigerant and evacuate the system to a deep vacuum (e.g., 500 microns) for at least 30 minutes.

3. 3

   Charge the system with the specified amount of new refrigerant by weight, as per the unit's nameplate.

4. 4

   Inspect all flare connections and brazed joints for signs of oil leakage, which can indicate a leak point.