WarningR-290 Self-Contained Cases
R-290 Case Condenser Fan Failure
The condenser fan on a self-contained R-290 case has stopped or slowed, so head pressure climbs, the compressor overheats/trips, and the case warms. On plug-ins this is one of the most common no-cool causes — usually a failed EC/PSC fan motor, seized bearing, or blocked coil.
Symptoms
- Condenser section hot; fan not spinning or spinning slowly/noisily
- Compressor short-cycling on overload / high head pressure
- Case gradually warming, worse in high ambient or crowded locations
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