Contents

Introduction
Check on your delivery
Contents
Safety Precautions
Operation
- 1. Features
- 2. Functions in each mode
- 3. Names and Function of Each Part
- 4. Explanation of Control and Movement
  - 4.1 Details of Display of Power Factor Status and Auto/Manual Control Changeover
  - 4.2 Status of Power Factor
  - 4.3 Auto / Manual Control Changeover
  - 4.4 Features of each Control
  - 4.5 Cyclic Control Operation
  - 4.6 Priority Control Operation
  - 4.7 Optimal Control Operation
  - 4.8 Capacitor Changing Control at Optimal Control Operation
  - 4.9 Light Load Disconnection Operation
  - 4.10 Forced Disconnection Operation
- 5. Set-up
  - 5.1 Flow of Set-up (Measure Set-up Mode)
  - 5.2 Flow of Set-up (Control Set-up Mode)
  - 5.3 Measure Set-up Menu 1 (Set-up of Phase/Wire Type Using VT/direct input Primary Voltage Primary Current)
  - 5.4 Measure Set-up Menu 2 (Setup of Combination)
  - 5.5 Control Set-up Menu 1 (set-up of Target Power Factor)
  - 5.6 Control Set-up Menu 2 (Set-up of Light Load Power Ratio)
  - 5.7 Control Set-up Menu 3 (Set-up of Delay Time)How to
  - 5.8 Control Set-up Menu 4 (Set-up of Control Method)
  - 5.9 Control Set-up Menu 5 (Set-up of Capacity)
  - 5.10 TEST Menu (Operation Tests for the Connecting/Disconnecting)
  - 5.11 Set-up of Auto/Manual Control
  - 5.12 Priority Order of Control
- 6. Operation
  - 6.1 Changing of the Display
  - 6.2 Changing of the Phase
  - 6.3 Display of Capacity
  - 6.4 Reset of Capacity
- 7. Others
  - 7.1 Operation
  - 7.2 Troubleshooting
  - After-sale service
Installation
- 1. Dimensions
- 2. Attachment
- 3. Wiring
- 4. Wiring Diagram
Specifications
- Specifications
- Set-up Table

Mitsubishi Electric VAR 6A, VAR 12A User's Manual

Mitsubishi Electric VAR 6A, VAR 12A manual cover

Pages 52

Year 2021

Language(s)

of 52

Mitsubishi Electric VAR 6A, VAR 12A Specification

The Mitsubishi Electric VAR 6A and VAR 12A are advanced Variable Air Volume (VAV) systems designed to enhance HVAC efficiency and performance in commercial and industrial settings. The VAR 6A is engineered to handle airflows ranging from 150 to 1,200 cubic feet per minute (CFM), while the VAR 12A accommodates larger airflows from 1,200 to 2,400 CFM. Both models feature Mitsubishi's proprietary high-efficiency fan technology, which optimizes energy consumption by adjusting airflow based on real-time demand, resulting in significant energy savings and improved indoor air quality.

The units are equipped with intelligent control systems that integrate seamlessly with building management systems (BMS), allowing for precise regulation of temperature and air distribution across different zones. This integration supports Modbus and BACnet communication protocols, ensuring compatibility with a wide range of existing infrastructures. The VAR series is designed for quiet operation, utilizing advanced sound attenuation materials to minimize noise, making them ideal for environments where noise reduction is critical, such as offices and healthcare facilities.

Both the VAR 6A and VAR 12A are constructed with durable, corrosion-resistant materials, ensuring longevity and reliability even in demanding conditions. They incorporate easy-access panels for simplified maintenance and serviceability, reducing downtime and operational costs. The units are also designed with sustainability in mind, utilizing eco-friendly refrigerants and components to minimize environmental impact. Mitsubishi Electric's commitment to innovation and quality is evident in the VAR series, providing robust solutions for efficient climate control tailored to varying building requirements. These systems are ideal for facilities seeking to improve energy efficiency, comfort, and operational efficiency through cutting-edge HVAC technology.

Mitsubishi Electric VAR 6A, VAR 12A F.A.Q.

How do I perform a basic setup of the Mitsubishi Electric VAR 6A?

To perform a basic setup of the Mitsubishi Electric VAR 6A, first ensure that the unit is properly mounted and connected to your electrical system. Then, follow the installation manual to configure the settings according to your specific application requirements. Make sure to check all electrical connections and perform a test run to verify functionality.

What should I do if the Mitsubishi Electric VAR 12A is not powering on?

If the VAR 12A is not powering on, first check the power supply to ensure it is connected and functioning properly. Inspect the fuses and circuit breakers for any issues. If the problem persists, consult the troubleshooting section of the user manual or contact Mitsubishi Electric support for further assistance.

How can I maintain the Mitsubishi Electric VAR 6A for optimal performance?

To maintain the VAR 6A, conduct regular inspections for dust and debris, clean the unit as needed, and check all electrical connections for signs of wear or corrosion. Schedule periodic maintenance checks and update any firmware as recommended by Mitsubishi Electric.

What are common troubleshooting steps for VAR 12A overheating issues?

To troubleshoot overheating in the VAR 12A, ensure that the ventilation around the unit is unobstructed. Check for any dust buildup on cooling fins and clean if necessary. Verify that the ambient temperature does not exceed operational limits. If the issue continues, contact technical support.

Can the Mitsubishi Electric VAR 6A be integrated with a building management system?

Yes, the Mitsubishi Electric VAR 6A can be integrated with a building management system. It supports various communication protocols that facilitate such integration. Refer to the technical specifications for detailed information on compatible systems.

How do I reset the error codes on the Mitsubishi Electric VAR 12A?

To reset error codes on the VAR 12A, first address the underlying issue that triggered the error. Once resolved, use the control panel to navigate to the error reset option and follow the prompts. Refer to the manual for specific button sequences if necessary.

What preventive maintenance should be performed on the VAR 6A?

Preventive maintenance for the VAR 6A includes regular cleaning, inspection of electrical connections, and checking for loose components. It's also important to monitor performance metrics and schedule professional servicing at recommended intervals.

How can I improve the energy efficiency of the Mitsubishi Electric VAR 12A?

To improve energy efficiency, ensure that the VAR 12A is properly sized for the application, and that it runs at optimal load levels. Regular maintenance can prevent energy loss due to wear and tear. Consider upgrading to any available energy-saving features or settings.

Why is the VAR 6A making unusual noises during operation?

Unusual noises from the VAR 6A could be due to loose components, worn bearings, or debris in the system. Inspect the unit for any visible signs of damage or looseness and tighten or replace parts as necessary. If the noise persists, consult a professional technician.

Is it possible to upgrade the firmware of the Mitsubishi Electric VAR 12A?

Yes, firmware upgrades for the VAR 12A are possible. Check the Mitsubishi Electric website or contact their support to find the latest firmware version. Follow the instructions provided to safely update the firmware without disrupting the unit’s operation.