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 8, A - N — LID Primary and Secondary Messages and Custo m Alarm /Alert
Messages with Troubleshooting Guides
Click here for Table 8A — Shutdown with ON/OFF /RESET-OFF
Click here f or Table 8B — T iming OUT or Ti med OUT