Troubleshooting Your Daikin Inverter AC: Why the Compressor Won’t Turn On After Automatically Shutting Off the Condenser Fan
Introduction
Have you ever encountered a situation where your Daikin inverter air conditioner's compressor does not turn on after the condenser fan has been switched off automatically after only ten seconds of operation? This can be quite frustrating, and it is essential to understand the potential causes and what steps to take to resolve the issue.
Potential Causes
There can be several reasons why your Daikin inverter AC compressor might not start after the condenser fan has been switched off. Here are the most likely causes:
1. Faulty Power Supply
The first thing to consider is whether the power supply to your AC unit is functioning correctly. A faulty or intermittent power supply can cause the compressor to fail to start. Ensure that the power outlet is properly connected and that there are no voltage drops in your power grid.
2. Defective Compressor
The compressor is a crucial component of your air conditioner, and a defective one can cause the system to malfunction. This could be due to wear and tear, damage, or a manufacturing defect. If the compressor is not operating as it should, it may not start when the condenser fan is switched off.
3. Broken Wires
Corroded or damaged wiring can prevent the compressor from receiving the necessary electrical signals to start. Inspect all the wires connected to the compressor and ensure that they are not frayed, broken, or exposed. Professional rewiring might be necessary if you find any issues.
4. Defective PCB
The Printed Circuit Board (PCB) plays a critical role in controlling and managing the various components of your AC. A faulty PCB can send incorrect signals to the compressor, causing it to fail to start. This could be a result of age, overheating, or a manufacturing defect. In such a case, replacement of the PCB is often required.
Why Turning Off the Condenser Fan Automatically Causes Compressor Failure?
In an inverter AC, the compressor and the condenser fan typically start and stop together. However, some newer models feature an automatic shutdown mechanism for the condenser fan. In these systems, the fan may turn off after a set period, but the compressor is supposed to continue running until the desired cooling level is achieved. If the compressor fails to start after the condenser fan has been switched off, it can indicate several issues:
1. Inverter Malfunction
The inverter circuit board is responsible for controlling the power supply to the compressor. If the inverter is malfunctioning, it might not provide the necessary signal to start the compressor after the fan has been turned off.
2. Compressor Control Relay Failure
A relay is used to control the connection between the power source and the compressor. If the relay has failed, it may not be able to complete the circuit, preventing the compressor from starting.
3. Compatibility Issues
Some AC models are designed with specific compatibility settings for the condenser fan and compressor. If there are compatibility issues, the fan turning off automatically can cause a chain reaction that prevents the compressor from starting.
How to Troubleshoot and Resolve the Issue
Given the potential causes, the best course of action would be to call a qualified AC technician to examine and diagnose the issue. Here are the steps involved in the process:
1. Visual Inspection
The technician will first perform a visual inspection of all the components, including the compressor, condenser fan, and wiring. Any visible damage or issues will be identified and addressed.
2. System Diagnosis
The technician will use diagnostic tools to check the system's performance and identify any underlying issues. This could involve testing the power supply, measuring the resistance of the compressor, and verifying the functionality of the inverter and PCB.
3. Replacement Parts
If the technician identifies a faulty component, such as the compressor, a defective PCB, or a broken wire, replacement parts may be necessary. The old components will be removed, and new ones will be installed to ensure the system works correctly.
4. Testing and Verification
Once the repairs or replacements are completed, the technician will test the AC system to verify that the compressor starts correctly after the condenser fan has been turned off.
Conclusion
When your Daikin inverter AC's compressor fails to turn on after the condenser fan has been switched off, it can be a significant inconvenience. By understanding the potential causes and seeking professional assistance, you can ensure that your AC system operates efficiently and effectively. Remember to call a qualified AC technician to diagnose and resolve the issue properly.