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Midea MHC - V18W/D2RN8 User Manual

Midea MHC - V18W/D2RN8
93 pages
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M thermal A Series Mono(18~30kW)
Commercial Air Conditioners
R32
Service
Manual
Midea CAC
Confidential

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Midea MHC - V18W/D2RN8 Specifications

General IconGeneral
Cooling Capacity18000 BTU/h
Energy Efficiency Ratio (EER)3.21
Power Supply220-240V, 50Hz
RefrigerantR410A
Indoor Unit Noise Level42 dB(A)
Coefficient of Performance (COP)3.61
Air Flow (Indoor)850 m³/h
TypeSplit Air Conditioner

Summary

Components Layout and Refrigerant Circuits

Layout of Functional Components

Details the physical arrangement and placement of key components within the outdoor unit.

Piping Diagrams

Illustrates the refrigerant circuits and component connections with detailed diagrams.

Refrigerant Flow Diagrams

Visualizes the path of refrigerant during different operating modes like heating and cooling.

Control

Stop Operation

Explains the conditions and reasons for the system entering a stop state.

Standby Control

Describes the system's behavior and component operation when in standby mode.

Startup Control

Outlines the sequence and conditions for starting up the compressor and other components.

Normal Operation Control

Details how components are managed and adjusted during standard heating/cooling cycles.

Protection Control

Covers various safety mechanisms and error conditions that protect the unit.

Special Control

Explains unique operational modes and functions like oil return and defrosting.

Roles of Temperature Sensors in Control Functions

Details how different temperature sensors influence system operation and control logic.

Diagnosis and Troubleshooting

Outdoor Unit Electric Control Box Layout

Identifies the location and arrangement of electrical control components within the unit.

Outdoor Unit PCBs

Describes the main printed circuit boards (PCBs) and their functions in the outdoor unit.

Error Code Table

Lists all error codes, their descriptions, and potential causes for troubleshooting.

Troubleshooting

Provides step-by-step procedures for diagnosing and resolving common issues and errors.

Appendix to Part 4

Contains supplementary information, such as sensor resistance characteristics, relevant to Part 4.

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