Chief Engineer on a fishing vessel on the Bering Sea. We have a Sabroe 125 and a 110 running R-22. A new issue has crept up recently and i am stumped. Normally an issue like this relates to some sort of change but that's not the case this time.

I run the 125 as master(1) and the 110 as slave(2) on full auto based on demand. The 110 is alarming on a (decreased load) shutdown, normally between 10-20%.

The alarm is "high suction superheat".

Any idea's would be appreciated as i have few resources out here and my go to guy is also stumped.

I hope this is in the right section, if not let me know....thick skin here.