Check Back Pressure Regulator (CR)

Indicates a problem with the suction pressure regulator or back pressure regulator, affecting temperature stability.

Possible causes

Incorrectly adjusted setpoint
Mechanical failure of CR regulator
Defective or uncalibrated pressure sensor
Obstruction in suction line

Recommended actions

Verify setpoint is correct for product
Perform CR regulator diagnostic test
Inspect pressure transducer connections
Calibrate or replace regulator if non-responsive

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