AL66 (SPT) Suction Pressure Transducer, (EPT) Evaporator Pressure Transducer

Cause
  • Suction Pressure Transducer (SPT) out of range.
Components Troubleshooting Corrective actions
Suction Pressure Transducer (SPT) Confirm accurate EPT and SPT pressure readings, refer to MANIFOLD GAUGE SET Section 6.2. - Performing a Pre-trip 5-9 test will also check the transducers. Replace EPT/SPT if defective.

Monitor If the alarm persists, it may indicate a failing compressor, refer to COMPRESSOR Service Section 6.8.