1. Introduction
This manual provides essential information for the safe and effective handling, installation, and maintenance of the Fujitsu Inverter Air Conditioner Internal Computer Board, model K06AL-04-02 9707386042. This component serves as the main control board for compatible Fujitsu inverter air conditioning units. It is intended for replacement purposes and should only be installed by qualified technicians.
2. Safety Information
WARNING: Risk of electric shock. Installation and servicing should only be performed by qualified personnel.
- Always disconnect power to the air conditioning unit before attempting any installation, removal, or maintenance of the internal computer board.
- Wear appropriate personal protective equipment (PPE), including anti-static gloves, to prevent electrostatic discharge (ESD) damage to sensitive electronic components.
- Do not touch the board with wet hands.
- Ensure all connections are secure and correctly oriented before restoring power.
- Keep the board away from moisture, extreme temperatures, and direct sunlight.
3. Installation (Replacement)
This section outlines the general steps for replacing the internal computer board. Refer to your specific Fujitsu air conditioner service manual for detailed, model-specific instructions and wiring diagrams.
- Power Disconnection: Locate the main power supply to the air conditioning unit and switch it off at the circuit breaker. Verify that power is completely off using a voltage tester.
- Access the Unit: Open the air conditioner's outdoor or indoor unit casing to gain access to the existing computer board. This may involve removing screws and panels.
- Document Connections: Before disconnecting any wires, take clear photographs or make detailed diagrams of all existing wire connections to the old board. Pay close attention to the color coding and terminal labels.
- Disconnect Old Board: Carefully disconnect all wiring harnesses, connectors, and mounting screws securing the old computer board. Handle the board by its edges to avoid touching components.
- Install New Board: Position the new K06AL-04-02 9707386042 board in the same location as the old one. Secure it with the appropriate mounting screws.
- Reconnect Wiring: Using your documented connections (photos/diagrams), carefully reconnect all wiring harnesses and connectors to the new board. Ensure each connection is firm and correctly seated.
- Inspect: Double-check all connections for accuracy and security. Ensure no wires are pinched or loose.
- Close Unit: Carefully close and secure the air conditioner's casing.
- Restore Power: Restore power to the air conditioning unit at the circuit breaker.
- Test Functionality: Power on the air conditioner and test its various functions (cooling, heating, fan speeds, modes) to ensure proper operation.
4. Operation
The K06AL-04-02 9707386042 internal computer board is a core component that controls the functions of your Fujitsu inverter air conditioner. It does not have direct user-operable controls. Once correctly installed, the air conditioner unit should operate as designed, responding to commands from the remote control or unit's control panel.
Refer to your Fujitsu air conditioner's user manual for instructions on how to operate the air conditioning unit itself.
5. Maintenance
The internal computer board itself requires minimal direct maintenance. However, proper care of the overall air conditioning unit contributes to the longevity of all its components, including the main board.
- Keep Unit Clean: Ensure the air conditioner's filters are regularly cleaned or replaced to maintain optimal airflow and prevent dust buildup inside the unit, which can affect electronic components.
- Avoid Moisture: Protect the air conditioning unit from excessive moisture or water ingress, especially the outdoor unit where the main board might be located.
- Professional Inspection: It is recommended to have your air conditioning unit professionally inspected and serviced annually to ensure all components, including the main board, are functioning correctly.
- Power Surges: Consider using surge protectors for your air conditioning unit to protect sensitive electronics from electrical spikes.
6. Troubleshooting
If your Fujitsu air conditioner is not functioning correctly after replacing the internal computer board, consider the following troubleshooting steps. Due to the complexity of this component, professional diagnosis is highly recommended.
- No Power:
- Check if the circuit breaker for the AC unit is tripped.
- Verify all power connections to the board are secure.
- Error Codes:
- If the AC unit displays an error code, consult your Fujitsu air conditioner's service manual to interpret the code and identify the potential issue.
- Some error codes may indicate a problem with the main board itself or other connected components.
- Incorrect Functionality:
- If the unit powers on but functions incorrectly (e.g., no cooling/heating, fan not working), re-check all wiring connections to ensure they match the original configuration.
- Ensure the correct board model (K06AL-04-02 9707386042) was installed and is compatible with your specific Fujitsu AC unit model.
- Component Damage:
- Visually inspect the board for any signs of physical damage, burnt components, or loose connections.
If these steps do not resolve the issue, contact a certified HVAC technician for further assistance.
7. Specifications
| Feature | Detail |
|---|---|
| Product Type | Internal Computer Board / Main Board |
| Model Number | K06AL-04-02 9707386042 |
| Compatibility | Fujitsu Inverter Air Conditioners (specific models may vary, verify with your AC unit's service manual) |
| Brand (Board Manufacturer) | OLOEY |
| Package Dimensions (Approx.) | Length: 8 cm, Width: 6 cm, Height: 5 cm |
| Package Weight (Approx.) | 0.01 kg |
8. User Tips
- Verify Compatibility: Always confirm the exact model number of your existing board and air conditioner unit before purchasing a replacement to ensure full compatibility.
- Professional Installation: For optimal performance and safety, it is strongly recommended to have this component installed by a certified HVAC technician.
- Static Protection: When handling the board, use anti-static precautions (e.g., anti-static wrist strap, mat) to prevent damage from electrostatic discharge.
9. Warranty and Support
For any questions regarding the functionality, installation, or potential defects of this product, please contact the seller or your authorized service provider. Keep your purchase records for any warranty claims.
This manual is for informational purposes only. The manufacturer and seller are not responsible for any damage or injury caused by improper installation or misuse of this product.
