Up to 72HP (by combining multiple outdoor units) Maximum Piping Length: 1,000 meters (total pipe length)
The table below shows where to find the official Midea VRF V4 Plus service manual and key supporting documents:
: The system can automatically distribute addresses to indoor units, simplifying commissioning.
Bookmark this article and print the error code table (Chapter 2) to keep inside your tool bag. For firmware updates or specific wiring diagrams, always refer to the official manual corresponding to your unit's serial number prefix (MV8-xxxx).
What is the or layout of the outdoor system combination?
The manual’s charging chart notes that for a 560 module at 35°C ambient, target subcooling is 8°C. If subcooling is 2°C, you have a leak. The manual then gives leak detection procedures (soap bubbles, ultrasonic, or nitrogen pressure test).
Replace the thermistor if it reads open-circuit, short-circuit, or deviates significantly from the target temperature curve.
Before checking individual components, technicians should utilize the built-in digital display on the main PCB of the outdoor unit to verify real-time operating parameters. Entering Commissioning / Spot Check Mode
Proper wiring and installation are crucial for system performance and safety. The service manual dedicates significant sections to these topics:
Attach digital manifolds to read low and high-side operating pressures.
When the main controller fails, the provides two emergency protocols:
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