Otis · 400 Elevator
Indicates that the refrigeration temperature is 1.5º C above the compressor cut-in setting, suggesting the unit is not cooling sufficiently. This can compromise product integrity and safety.
Click steps to track your progress.
Verify the accuracy of the refrigeration temperature sensor against a calibrated reference thermometer.
Measure the supply voltage at the compressor input terminals and verify compressor operation (audible running, vibration).
Inspect condenser and evaporator coils for cleanliness, obstructions, and verify proper airflow from fans.
Check the refrigeration unit's control parameters, specifically the compressor cut-in/cut-out temperature setpoints, against documentation.