Unexpected shutdowns on a twin-screw compressor usually come from motor overload, pressure faults or temperature trips.
Check the Motor
Inspect for overload, winding faults and correct supply voltage before looking elsewhere.
Pressure Faults
Residual pressure at start, a faulty pressure sensor or a stuck inlet valve can cause a fault on start or load.
Temperature Trips
Blocked coolers, low oil or a failed thermal valve cause high-temperature shutdowns.
Control System
Read the fault history, verify sensors, and reset only after the root cause is confirmed.