mcquay chiller model hsa205q127ya

[chilledright]

does anyone know why this unit would be intermittantly cutting out on pressure differential fault, always at 12 degrees celcius leaving water temperature.

[HallsEngineer]

It can't get the suction pressure down quick enough so throttle suction or liquid line to get away or install an mop valve.

[MQFS OZ]

Chilledright,
Like HallsEngineer said suction pressure most likely to high. Check your load solenoid and your loading pulse rates, may need to quicken up the loading. What is the chiller model no? The number you have posted is the compressor model no.
Regards