Refrigerant Leak / Shortage

What does E57 mean?

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.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

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

2. 4

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