Midea Vrf V4 Plus Service Manual [Latest × WORKFLOW]

Features an advanced oil-balancing pipe between outdoor units to prevent compressor failure. Installation Guidelines

| Section | Content | |---------|---------| | | Capacity, power, refrigerant, dimensions | | Wiring diagrams | Power & communication wiring | | Refrigerant piping | Max pipe length, branch methods | | Troubleshooting | Error codes (E0, E5, P0, etc.) | | Dip switch settings | Address setting, mode config | | Maintenance | Component checks, recovery, vacuum | | Exploded views | Parts numbers for ordering | midea vrf v4 plus service manual

| Error Code | Description | Common Fix | |------------|-------------|-------------| | | IPM Module Overcurrent | Check compressor winding resistance, replace IPM board | | P4 | Compressor Discharge Temp > 115°C | Low refrigerant charge, expansion valve stuck closed | | E1 | High pressure protection | Condenser coil dirty, fan motor failure, overcharge | | Ed | Communication fault between ODU and IDU | Broken H1/H2 wiring, wrong addressing | | L5 | Outdoor fan motor stall | Replace fan motor or check DC bus voltage | 115°C | Low refrigerant charge