Control Test

The Control Test feature can check all of the thermistor temperature sensors, including those on the Options modules, pressure transducers, pumps and their associated flow switches, the guide vane actuator, and other control outputs, such as hot gas bypass. The tests can help to determine whether a switch is defective, or a pump relay is not operating, among other useful troubleshooting tests. During pumpdown operations, the pumps are energized to prevent freeze-up and the vessel pressures and temperatures are displayed. The lockout feature will prevent start-up of the compressor when no refrigerant is present in the machine, or if the vessels are isolated. The lockout is then terminated by the operator by using the Terminate Lockout function after the pumpdown procedure is reversed and refrigerant is added.

Table 10, A - N — LID Primary and Secondary Messages and Custom Alarm/Alert Messages with Troubleshooting Guides

Click here for Table 10A — Shutdown with ON/OFF/RESET-OFF

Click here for Table 10B — Timing Out or Timed Out

Page 227
Image 227
Carrier PC211 specifications Control Test