Midea Vrf V4 Plus Service Manual ❲CERTIFIED • SERIES❳

: Supports actual total piping lengths up to 300m and a 130% indoor unit connection ratio. Protection

: Focuses on high-efficiency specifications, including the brushless DC inverter compressor and backup functions. Download/View on Scribd Technical Service Manual (PDF) midea vrf v4 plus service manual

: The system utilizes high-efficiency brushless DC inverter compressors and DC fan motors. This allows for precise speed control based on actual load, reducing power consumption by up to 25% compared to traditional AC systems. : Supports actual total piping lengths up to

| Error Code | Description | Immediate Service Manual Solution | | :--- | :--- | :--- | | | IPM Protection / Short circuit | Check compressor winding resistance (U,V,W to ground). Inspect IPM module with multimeter (Diode mode). | | C5 | Communication fault between IDU and ODU | Check continuity of shielded wire (P/Q/E). Ensure no voltage drop across terminals. | | E1 | High pressure protection | Check for dirty condenser coil, non-condensables, or overcharged refrigerant. | | E3 | Low pressure protection | Check for refrigerant leak, closed service valves, or low ambient operation without kit. | | P6 | DC Fan motor malfunction | Inspect the fan motor hall sensor feedback wire. Manual allows for "Emergency fan rotation check" via SW07. | This allows for precise speed control based on