Midea Central Air Conditioner Wire Controller

Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your Midea KJR-86S/BK or KJR-86J2/BK central air conditioner wire controller. Please read this manual thoroughly before installation and use to ensure proper function and safety.

1. Setup and Installation

Important: Installation should only be performed by a qualified technician to ensure safety and compliance with local electrical codes. Disconnect power to the air conditioning unit before beginning installation.

1. Mounting: Choose a suitable indoor location for the controller, typically at eye level, away from direct sunlight, heat sources, or drafts that could affect temperature readings. The controller is designed for wall mounting.
2. Wiring:

   

   • Carefully remove the back plate of the controller.
   • Connect the communication wires from your central air conditioning unit to the X1 and X2 terminals on the controller's back plate. Ensure correct polarity if specified by your AC unit's manual.
   • The image indicates a wire stripping length of approximately 8mm. Ensure wires are stripped to the correct length to prevent short circuits or poor connections.
   • The 'UP' arrow on the back plate indicates the correct orientation for mounting.
3. Securing: Secure the back plate to the wall using appropriate screws. Once wiring is complete and the back plate is secured, carefully attach the front panel of the controller to the back plate.
4. Power On: Restore power to the air conditioning unit. The controller display should illuminate.

2. Operating Instructions

The Midea wire controller features an intuitive display and touch-sensitive buttons for easy operation.

• Power Button (开/关): Located at the top right, press to turn the unit ON or OFF.
• Mode Selection: Look for an icon resembling a snowflake (cooling), sun (heating), or water drop (dehumidification) to cycle through operating modes.
• Fan Speed: An icon resembling a fan blade typically controls fan speed (e.g., low, medium, high, auto).
• Temperature Adjustment: Use the up/down arrows (often indicated by '+' and '-' or similar symbols) to set the desired temperature.
• Timer/Clock: An icon resembling a clock or 'L' might indicate timer settings or clock adjustment.
• Lock Function: A padlock icon suggests a child lock or button lock feature to prevent accidental changes. Press and hold to activate/deactivate.
• Menu/Settings: An icon with three horizontal lines may provide access to advanced settings or system information.

Refer to your central air conditioning unit's specific manual for detailed explanations of each mode and advanced functions, as the controller acts as an interface.

3. Maintenance

Regular maintenance ensures optimal performance and longevity of your wire controller.

• Cleaning: Gently wipe the display and casing with a soft, dry cloth. For stubborn marks, use a slightly damp cloth with mild soap, then dry immediately. Avoid abrasive cleaners, solvents, or spraying liquids directly onto the controller.
• Environmental Conditions: Ensure the controller is not exposed to extreme temperatures, high humidity, or direct water contact.
• Connections: Periodically, a qualified technician should check the wiring connections for tightness and corrosion.

4. Troubleshooting

If you encounter issues with your wire controller, try the following basic troubleshooting steps:

• No Display/No Power:
  • Check if the central air conditioning unit has power.
  • Ensure the controller is properly seated on its back plate.
  • Verify wiring connections (X1, X2) are secure (consult a technician).
• Incorrect Temperature Reading:
  • Ensure the controller is not exposed to direct sunlight, drafts, or heat sources.
  • Clean any dust accumulation on the controller's vents (if present).
• Buttons Unresponsive:
  • Check if the lock function (padlock icon) is activated. Deactivate it if necessary.
  • Power cycle the air conditioning unit (turn off, wait 30 seconds, turn on).
• Unit Not Responding to Commands:
  • Verify communication wiring between the controller and the AC unit.
  • Ensure the AC unit itself is functioning correctly.

If problems persist, contact a qualified HVAC technician or Midea customer support.

5. Specifications

6. User Tips

• Always ensure the controller is installed in a location that accurately reflects the room temperature, avoiding areas prone to drafts or direct heat.
• Familiarize yourself with the icons on the display. While universal, specific functions might vary slightly with your AC unit model.
• If the display seems dim or unresponsive, a quick power cycle of the entire AC system can often resolve minor glitches.

7. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the documentation provided with your central air conditioning unit or contact your original point of purchase. Ensure you have your product model number (KJR-86S/BK or KJR-86J2/BK) available when seeking support.