ALr 19 - How the 'Terminal Alarm' works
If the compressor in a cooler has run continuously for the configured time without reaching the setpoint temperature, the SCS Controller can switch off all the outputs to protect the asset and trigger an alarm (ALr 19).
Review the fault logic for the "Terminal" or "Refrigeration Failure" alarm in the following graph:
Possible causes and actions
The compressor has run continuously for the configured time without reaching the setpoint temperature. There are multiple possibilities preventing the system from achieving temperature.
- There are two actions:
- (For all FW Versions prior to 1574) Write to the “Clear Terminal Alarm” parameter.
- (In all FW versions from 1574 onwards) Reset the system by power cycling off and on.
Find out how to clear the terminal alarm with Field app