WarningR-290 Self-Contained Cases
R-290 Case Iced-Up Evaporator
The evaporator in a self-contained R-290 case is frosted/iced, blocking airflow so the case slowly warms. Usually a defrost, drain, or airflow issue on the sealed unit.
Symptoms
- Heavy frost/ice on the evaporator coil; reduced airflow
- Case warming even though the compressor runs
- Water in the case or a frozen/blocked drain
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