Midea MV6-R252WV2RN1 - User Manual

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Service Manual167 pages

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Summary

1 OVERVIEW

1.1 Meaning of Various Labels

Explains warning, caution, and information symbols used in the manual for user guidance.

4 BEFORE OPERATING

General Safety and Operation Precautions

Details safety warnings, child usage guidelines, and professional servicing requirements before system operation.

5 OPERATIONS

5.1 Operating Range

Specifies the operational temperature and humidity limits for various cooling and heating modes.

5.2 System Operation Modes

Covers system operation, cooling/heating modes, defrost cycles, and mode conflict resolution.

5.3 Dry Program Usage

Details the function and usage of the dry program for effective humidity control in rooms.

6 MAINTENANCE AND REPAIR

General Maintenance and Repair Safety

Important safety notes and warnings regarding unit maintenance, cleaning, and repair procedures.

6.1 Long-term Storage Maintenance

Procedures for maintaining the unit before and after long periods of inactivity to ensure proper functioning.

6.3 Refrigerant Information

Provides crucial information on refrigerant type, GWP, and safe handling precautions.

6.4 After-Sales Service and Warranty

Outlines warranty period, recommended inspections, and essential service contact details.

7 TROUBLESHOOTING

General Troubleshooting Safety

Crucial safety warning for immediate action during unusual operational situations like fire or shock.

7.1 Error Code Overview

Comprehensive list of error codes, their definitions, and display remarks for diagnosing system issues.

7.2 Non-AC Related Fault Symptoms

Identifies operational issues not directly caused by the air conditioning system, such as noise or smoke.

Summary

1 OVERVIEW

1.1 Meaning of Various Labels

Explains warning, caution, and information symbols used in the manual for user guidance.

4 BEFORE OPERATING

General Safety and Operation Precautions

Details safety warnings, child usage guidelines, and professional servicing requirements before system operation.

5 OPERATIONS

5.1 Operating Range

Specifies the operational temperature and humidity limits for various cooling and heating modes.

5.2 System Operation Modes

Covers system operation, cooling/heating modes, defrost cycles, and mode conflict resolution.

5.3 Dry Program Usage

Details the function and usage of the dry program for effective humidity control in rooms.

6 MAINTENANCE AND REPAIR

General Maintenance and Repair Safety

Important safety notes and warnings regarding unit maintenance, cleaning, and repair procedures.

6.1 Long-term Storage Maintenance

Procedures for maintaining the unit before and after long periods of inactivity to ensure proper functioning.

6.3 Refrigerant Information

Provides crucial information on refrigerant type, GWP, and safe handling precautions.

6.4 After-Sales Service and Warranty

Outlines warranty period, recommended inspections, and essential service contact details.

7 TROUBLESHOOTING

General Troubleshooting Safety

Crucial safety warning for immediate action during unusual operational situations like fire or shock.

7.1 Error Code Overview

Comprehensive list of error codes, their definitions, and display remarks for diagnosing system issues.

7.2 Non-AC Related Fault Symptoms

Identifies operational issues not directly caused by the air conditioning system, such as noise or smoke.

This document is an Owner's Manual for the Midea V6R Series VRF (Variable Refrigerant Flow) air conditioner, distributed by Frigicoll. It provides essential information for the safe and effective operation, maintenance, and troubleshooting of the device.

Function Description

The Midea V6R Series VRF air conditioner is designed for commercial purposes, such as stores, shopping malls, and large office buildings, offering both heating and cooling functionalities. It can also operate in a "mix cooling & heating" mode. The system consists of outdoor units and multiple indoor units, which can be controlled separately. The primary function is to regulate indoor temperature and humidity to create a comfortable environment. A "Dry Program" is available to reduce indoor humidity with minimal temperature drop.

Important Technical Specifications

Refrigerant Type: R-410A
GWP Value: 2088
Operating Range (Cooling Mode):
- Outdoor temperature: -5°C to 52°C (DB)
- Indoor temperature: 15°C to 24°C (WB)
- Indoor humidity: ≤ 80%
- Note: -15°C cooling is possible only with the single MS box; otherwise, the minimum allowable cooling operating temperature is -5°C.
Operating Range (Heating Mode):
- Outdoor temperature: -25°C to 19°C (WB)
- Indoor temperature: 15°C to 30°C (DB)
- Indoor humidity: ≤ 80%
Operating Range (Mix Cooling & Heating Mode):
- Outdoor temperature: -5°C to 27°C (DB) for main cooling; -5°C to 19°C (WB) for main heating.
- Indoor temperature: 15°C to 24°C (WB) for cooling; 15°C to 30°C (DB) for heating.
- Indoor humidity: ≤ 80%
Sound Pressure Level: A-weighted sound pressure of all units is below 70 dB.
Power Supply: The main power supply should be turned on 12 hours before operating the unit to ensure smooth operation.
Safety Devices: The unit includes safety devices such as fuses and circuit breakers.

Usage Features

Control: The indoor units can be controlled separately. The operating program varies with different combinations of outdoor units and controllers. Standard controls are supported, but custom control systems may also be installed.
Mode Selection: Users can select between cooling, heating, and fan modes. However, indoor units connected to the same port of the mode selection (MS) box cannot operate in heating and cooling modes simultaneously. A "mode conflict" (E0 error) will be displayed if this occurs.
Automatic Restart: In case of a power outage, the unit will automatically restart its operation when the power supply resumes.
Dry Program: This program automatically determines temperature and fan rotation speed to reduce humidity, and these settings cannot be manually adjusted via the user interface.
Fan Speed and Air Flow Direction: These settings can be adjusted via the user interface, though the air flow direction function may not be available for all indoor units. The fan speed may not change as expected during heating when the indoor temperature reaches the set temperature, or if another indoor unit is in heating operation.
Defrost Operation: During heating, if the outdoor temperature decreases and frost forms on the heat exchanger, the system will perform a defrosting operation. The indoor unit will display "defrost operation," and the indoor fan motor will stop to prevent cold air discharge. This is a normal function and not a malfunction.
Heating Performance: Heating operation takes longer than cooling. External temperature drops can reduce heating capacity, suggesting the use of supplementary heating equipment if necessary (with proper ventilation).
Room Temperature Rise: It takes some time for the room temperature to rise after the unit starts heating. If hot air rises to the ceiling, a circulating device is recommended to distribute indoor air.

Maintenance Features

Professional Maintenance: All maintenance, repair, and dismantling work, especially involving refrigerant, oil, and other components, must be carried out by authorized installation personnel or qualified air conditioning service engineers. Incorrect servicing can lead to electric shock, fire, or water leakage.
Regular Checks: The refrigerant must be checked regularly for leakages according to applicable law.
Cleaning:
- Air Filter and External Shell: These should be cleaned regularly. The installation/user manuals for indoor units provide specific maintenance tips and cleaning procedures. Ensure the clean air filter is installed in its original position.
- Control Panel: Do not use gasoline, diluent, or chemical dust cloth. Clean with a cloth immersed in diluted neutral detergent, squeezed dry, and then wiped with a dry cloth.
Maintenance After Long Shutdown: Before restarting after a long period (e.g., early summer or winter), check and remove any objects clogging air inlets/outlets, clean the air filter and external shell, and turn on the main power supply 12 hours prior to operation.
Maintenance Before Long Shutdown: Before shutting down for a long period (e.g., end of winter or summer), run the indoor unit in fan mode for about half a day to dry internal parts, then turn off the power supply.
Warranty: The product includes a warranty card completed by the agent during installation. Customers should keep this card for future reference and contact the agent for repairs during the warranty period.
Recommended Maintenance and Inspection: Due to dust accumulation over years of use, unit performance may degrade. Professional skills are required for dismantling and cleaning for optimal maintenance. Contact the agent for details, providing the model name, installation date, and fault symptoms.
Shorter Maintenance Cycle: The maintenance and replacement cycle may be shortened if the unit is used in conditions such as extreme temperature/humidity fluctuations, large power fluctuations, frequent collisions/vibrations, air containing dust/salt/harmful gases, or frequent on/off cycles or prolonged operating times.
Disposal: The unit uses hydrogen fluorocarbons. Disposal must be done by contacting the agent and following regulations for collection, transportation, and destruction of hydrofluorocarbons.
Safety Precautions:
- Do not insert fingers, sticks, or other items into air inlets/outlets.
- Do not remove the fan mesh cover.
- Turn off the main switch before any maintenance work.
- Check the supporting and base structure for damages after long use.
- Do not direct the air outlet at human bodies for extended periods.
- Ensure proper ventilation if the air conditioner is used with a burner device to prevent anoxia.
- Do not operate the air conditioner when applying fumigated insecticide.
- If refrigerant leaks, ensure no fire sources are present, ventilate the room, and contact the agent. Do not use the unit until the leakage is resolved.