Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the Midea KJR-12B/DP (T)-E Fixed Frequency Line Controller for central air conditioning systems. Please read this manual thoroughly before installation and operation to ensure proper use and optimal performance.
Setup and Installation
The controller is designed for fixed frequency central air conditioning systems. Proper installation is crucial for safe and efficient operation. It is recommended that installation be performed by a qualified technician.
Package Contents:
- KJR-12B/DP (T)-E Wire Controller (English Version)
- 12B Connection Cable
- 12B Socket Terminal
Installation Steps:
- Mounting: Choose a suitable location on a wall, away from direct sunlight, heat sources, or drafts, and at a height that allows for easy operation. Secure the controller to the wall using appropriate fasteners through the mounting holes on the back of the unit.
- Wiring: Connect the provided 12B connection cable to the terminal block on the back of the controller. Ensure that each wire is correctly matched to the corresponding terminal (A, B, C, D, E) as per the air conditioning unit's wiring diagram.
- Secure Connections: Double-check all wiring connections to ensure they are secure and properly insulated.
- Power On: Once installation is complete and verified, restore power to the air conditioning system.
Operating Instructions
The controller features an intuitive interface with a digital display and various control buttons. Lift the front flap to access all control buttons.
Display Indicators:
- AUTO: Automatic operating mode.
- COOL: Cooling mode.
- DRY: Dehumidification mode.
- HEAT: Heating mode.
- FAN ONLY: Fan operation without heating or cooling.
- FAN SPEED: Indicates the current fan speed setting.
Button Functions:
| Button | Function |
|---|---|
| MODE | Cycles through operating modes: AUTO, COOL, DRY, HEAT, FAN ONLY. |
| FAN SPEED | Adjusts the fan speed (e.g., Low, Medium, High, Auto). |
| TEMP (Up/Down) | Adjusts the desired temperature setting. |
| TIME ON | Sets a timer for the unit to turn on. |
| TIME OFF | Sets a timer for the unit to turn off. |
| FOLLOW ME | Activates a feature where the controller senses the temperature at its location and adjusts operation accordingly. |
| AUX HEATER | Engages auxiliary heating (if available and connected). |
| ECO | Activates energy-saving mode. |
| SWING | Controls the louver swing function (if applicable). |
| RESET | Resets the controller settings. |
| LOCK | Locks the controller to prevent unauthorized changes. |
Maintenance
Regular maintenance ensures the longevity and optimal performance of your controller.
- Cleaning: Wipe the surface of the controller with a soft, dry cloth. Do not use abrasive cleaners, solvents, or wet cloths, as these may damage the unit.
- Inspection: Periodically check the connection cable for any signs of wear or damage.
- Power Cycle: If the controller behaves erratically, try turning off the power to the air conditioning unit at the circuit breaker for a few minutes, then restore power.
Troubleshooting
If you encounter issues with your controller, refer to the following common troubleshooting steps:
| Problem | Possible Cause / Solution |
|---|---|
| Controller not powering on. | Check the power supply to the air conditioning unit. Ensure the connection cable is securely attached to the terminal block. |
| Display is blank or flickering. | Verify power supply. Try pressing the RESET button. If the issue persists, contact support. |
| Buttons are unresponsive. | Check if the LOCK function is active. Press the RESET button. |
| Air conditioner not responding to commands. | Ensure the controller is correctly wired to the air conditioning unit. Check the air conditioning unit's own power and status. |
Specifications
| Feature | Detail |
|---|---|
| Model | KJR-12B/DP (T)-E |
| Type | Fixed Frequency Line Controller for Central Air Conditioning |
| Brand | Midea |
| Origin | Mainland China |
| Dimensions (Approx.) | 10 cm (Length) x 10 cm (Width) x 10 cm (Height) |
| Weight (Approx.) | 0.5 kg |
| Chemicals | None (High-concerned chemical) |
User Tips
- Verify Compatibility: Before installation, always confirm that the back of your unit matches the provided images and that the model number KJR-12B/DP (T)-E is compatible with your Midea central air conditioning system.
- Wiring Check: Pay close attention to the terminal labels (A, B, C, D, E) during wiring to ensure correct connections and prevent damage.
Warranty and Support
For warranty information, technical support, or service inquiries, please contact your original point of purchase or an authorized Midea service center. Keep your purchase receipt as proof of purchase.
