ACRD301S Low Superheat Alarm

[Simon410067]

  Low superheat alarms keep sounding at the site, how to solve it?

[KarimEissa · Accepted solution]

Hello,

First an SR is required to update the unit J5   controller firmware to the latest version and then verify if The evaporator coil outlet temperature sensor is located in a horizontal section of the suction pipe on ACRD30x cooling units. When the compressor is first started, or on units with low load, some liquid refrigerant may be present in this section of pipe, which affects the superheat measurement. Additionally, certain default settings within the display can result in low suction pressure alarms during compressor start-up or during low heat load conditions.

so the SR is required to Relocate the evaporator coil outlet temperature sensor to the vertical section of the suction pipe and adjust various settings in the display

and ensure that there is a sufficient heat loads applied to the unit and verify the gauge readings 

Regards,

Karim

[SergioGonzalezQ]

Thank you Karim!