Control Test
The Control Test feature can check all of the thermi stor temperature se nsors, including thos e
on the Options modules, pressure transducer s , pu m ps and their associated flow switches, the
guide vane actuator, and other control outputs, such as hot gas bypass. The test s can help to
determine whether a swi tch is defective, or a pump relay is not operating, am ong other useful
troubleshooting test s. During pumpdown ope rations, the pumps are en er gi zed to prevent
freeze-up and the vess el pr e ssures and temperatu r es ar e di splayed. The lockout fea ture will
prevent start-up of the compr essor when no re frigerant is pr esent in the ma chine, or if the
vessels are is olated. The locko ut is then te rminated by the operator by usin g the Terminate
Lockout function aft er th e pumpdown procedure is rev er s ed and refrigerant is added .
Table 10, A - N — LID Primary and Secondary Mess age s a nd Custom Alarm/Alert
Messages with Troubleshooting Guides
Click here fo r Table 10A — Shu tdown with ON/OF F/RESET-OFF
Click here fo r Table 10B — Ti ming Out or Tim ed Out