1560-457 Compressor ZPD42KSE-PFZ-522 Digital Scroll is the factory-fitted single-phase Digital Scroll compressor (ZPD42KSE-PFZ-522) for ESP Plus Series 2 split ducted systems requiring digital capacity modulation, compressing R410A refrigerant to drive the system's heating and cooling cycle at the heart of the outdoor unit. A failed compressor causes complete system shutdown with loss of digital capacity control that enables zone-by-zone comfort management. Isolate power and recover all refrigerant before replacement -- compressor replacement must be performed by an ARCtick-licensed refrigeration technician.