AC Display Not Working? Here's How You Can Fix It Yourself

If your AC display is not working, it might be a bit confusing because you are not aware whether the AC is working or not, what mode the AC is in, or whether there are any errors in the AC. The display panel of a modern AC displays various information such as temperature, mode, timers, and error messages. If the display panel of your AC stops working, the possible reason might be related to power, the display panel, wiring, or sensors.

Fortunately, in most of the cases, the reason might be minor, and you might be able to troubleshoot the problem yourself without calling a technician.

Quick Fix if the AC Display is Not Working

Before jumping to conclusions that there is something seriously wrong with your AC, here are some quick fixes you should try:

1. Switch off your AC from the main switch and then restart it after 5 minutes.
2. Check if the remote display light button has switched off your AC display.
3. Change your remote batteries and try to change your AC settings again.
4. Also, check if there is any power fluctuation or if your plug is loose.
5. Lastly, try cleaning your front panel and display to ensure they are free from dust.

You may be surprised at how these quick fixes may solve your AC display problem instantly!

Common Reasons Why AC Display Is Not Working

There are several reasons why the display is not working. Knowing the actual reason helps in solving the problem easily.

• Power Supply Problem- If the indoor unit is not properly powered, the display screen does not show any information.
• Faulty Display LED Panel- The display screen is composed of an LED or LCD panel. It is possible that the display screen is damaged.
• Loose Internal Wiring- Wiring connections between the display board and the indoor PCB are sometimes disconnected during servicing of the air conditioner.
• Remote Control Settings- It is possible that the user has set the display light off using the remote control in order to avoid disturbing the user during sleep.
• PCB (Printed Circuit Board) Faulty- The indoor PCB is faulty and does not transmit any signal to the display screen.
• Moisture and Dust Damage- Moisture and dust accumulation in the indoor unit can damage the electronic devices, including the display screen.

AC Display Not Working But AC Is Running

In some instances, the AC display might not be working, but the AC might be running normally. This might be a clear indication that the AC is working normally, but there might be a problem with the display panel.

Possible reasons why this might happen include:

• Display light off through the remote- In most AC remotes, there is a display button, which, when pressed, turns off the display of the indoor AC unit so as not to interfere with sleeping at night.
• Failure of the LED display panel- The display panel of the AC might fail to display information even though the AC is running normally due to some damage to the panel.
• Loose ribbon cable connected to the display board- Sometimes, the ribbon cable connected to the display panel might be loose, thereby failing to display information even though the AC is running normally.
• Small problem with PCB that affects the display- In some cases, there is a minor problem with the indoor PCB that affects the display unit, while the compressor, fan, and cooling system operate normally.

In such cases, the AC will continue to cool the room, although you may not be able to see the temperature, mode, timer, and error codes on the display unit.

How to Fix AC Display Not Working – Step-by-Step Troubleshooting

If the display is not working, you can try the following troubleshooting steps.

1. Unplug the AC and turn it off.
2. Wait for about 5-10 minutes and then turn it on.
3. Check the display/light button on the remote display to ensure that the display is enabled.
4. Replace the remote display batteries and try the above steps.
5. Check the power socket and the stabilizer to ensure that there is no voltage problem.
6. If the display is not working, it could be due to the LED panel and the indoor PCB, which requires technician’s inspection.

Brand-Wise AC Display Is Not Working Issues

When the display is not working, issues might be slightly different for different AC brand models, as different AC brands are equipped with different display panels, control boards, and sensors.

Brand	Possible Display Issue	Cause of the Issue
Daikin AC display is not working	Display panel blank, display light not turning on.	The display light setting might have been disabled, a PCB fault, or a sensor fault.
Lloyd AC display is not working	The indoor display is not showing the temperature.	The display connector is not connected, and there is a voltage fluctuation.
Voltas AC display is not working	The LED display is not turning on.	There might be damage to the display panel or a fault in the indoor PCB.
Godrej AC display is not working	Blank or partially working display.	Dust might have been a buildup or display module problem.
Samsung AC display is not working	The display is not responding or is switching off randomly.	This could be a software problem or remote display settings.
Blue Star AC display is not working	The display light is flickering or invisible.	The reason could be a faulty LED display or a wiring problem.
Carrier AC display is not working	The screen is blank when running the AC.	In most cases, the problem is with the display board or a loose cable.
Haier AC display is not working	The display stopped showing temperature.	There might be a sensor problem or a display board problem
Onida AC display is not working	The display is switching off suddenly.	Power fluctuation or internal wiring problem.
Panasonic AC display is not working	The indoor display is not showing mode and temperature.	This could be a PCB problem or a damaged display module.

The above table shows different problems with the AC display for different brands of air conditioners, which can be easily identified and explained to the repairer for proper troubleshooting of the problem.

Split AC Display Not Working – Common Causes

In cases where the split AC display is not working, the main causes are as follows:

• Indoor PCB Malfunction- A malfunction in the indoor PCB can prevent the display panel from working properly since it does not receive any signals.
• Loose Ribbon Cable- The small ribbon cable connecting the display panel and the main PCB can be disconnected during servicing.
• Faulty LED Panel- The display panel can be faulty because of faulty components, power surges, and other manufacturing problems.
• Presence of Excessive Dust in the Indoor Unit- Excessive amounts of dust can interfere with the internal electronic components and sometimes the display board.

Window AC Display Not Working – Possible Issues

If your window AC display is not working, then it may be due to issues with the internal control panel, since it is connected to the display.

• Control Panel Malfunction- The internal control panel of your window AC may face issues, which may result in your display not working.
• Damaged LED Display Module- The display module may be damaged due to some issues like power surges or long-term usage.
• Faulty Control Board- If your window AC’s internal control board is damaged, then your display may stop working.
• Power Fluctuation Issues- There is a chance that your window AC may face issues due to power fluctuations, which may result in your display not working.

AC Display Showing Error or Blank Screen

In some cases, the display screen of the AC device might show some error codes, while in other cases, the screen might be blank.

Display Problem	Possible Cause
Blank display screen	Not receiving power supply or improper wiring.
Display screen flickers	Voltage fluctuations or problems with the PCB.
Part of the display screen works	LED panel is damaged
Display screen shows error codes	System error, sensor error, etc.
Display screen turns off abruptly	Overheating, problem with the PCB, etc.

Cost to Fix AC Display Problems

The repair charges vary depending on the type of fault in the AC and the model of the AC.

Problem	Estimated Cost (India)
Remote control replacement	₹300 – ₹1,200
Display panel repair	₹800 – ₹2,500
Indoor PCB repair	₹2,000 – ₹6,000
PCB replacement	₹6,000 – ₹12,000
Technician inspection	₹300 – ₹500

The charges for repairing the AC vary depending on the brand name of the AC and the service center where it is being repaired.

When Should You Call a Professional AC Technician?

You should consider calling a professional AC technician in the following cases:

• The display is blank even after restarting the AC- If you are still having trouble with the display even after restarting the AC and checking the remote settings, it could be an electrical problem with the AC.
• The display flickers or displays incorrect information- If the numbers displayed on the screen are flickering or showing incorrect temperatures, it is a problem with the display board.
• The AC is not responding to the remote- If the indoor unit is not responding to the remote control along with the display problem, it could be a problem with the sensor or receiver of the AC.
• There is a problem with the PCB or internal wiring of the AC- If you suspect a problem with the PCB of the indoor unit of your AC, it is always best to seek professional help to avoid causing damage to your AC system.

Tips to Prevent AC Display Problems

Here are some simple tips to avoid display problems in your air conditioner:

• Use a voltage stabilizer for your AC- A voltage stabilizer will safeguard your air conditioner from voltage fluctuations, which may harm sensitive electronic components of your air conditioner.
• Clean your air conditioner regularly- Regular cleaning of your air conditioner will ensure that dust does not settle inside your air conditioner, which may interfere with the working of electronic components.
• Avoid pressing your air conditioner’s display panel frequently- Excessive pressing of your air conditioner’s display panel may damage your air conditioner’s display panel.
• Get your air conditioner serviced regularly- Regular servicing of your air conditioner will ensure that any minor electrical issues are identified at the earliest to avoid display problems.
• Avoid exposing your air conditioner to moisture or water- Moisture or water may enter your air conditioner, which may damage your air conditioner’s display panel and other electrical components.

FAQ’s

1. Why is my AC display not turning on?

Ans- AC display is not turning on due to issues with the power supply, faulty display panels, disabled display settings, and faulty indoor PCBs.

2. Why is my split AC display not working, but the AC is running?

Ans- If the display is not working, and the AC is running, it is due to issues with the display panel and the wires, and the AC is working normally.

3. How do I reset my AC display panel?

Ans- To reset the display panel, you need to turn off the AC using the main switch, wait for 5-10 minutes, and turn it on again.

4. Why is the display light on my Daikin AC not working?

Ans- The display light on the AC is not working due to disabled display settings, faulty display panels, and faulty indoor PCBs.

5. What is the reason for the failure of the AC display panel?

Ans- The failure of the AC display panel is due to voltage fluctuations, dust accumulation, faulty display boards, and faulty internal wires.

6. What is PCB?

Ans- PCB (Printed Circuit Board) is the “brain of the AC” and is defined as the main electronic board inside the AC that connects and controls all the electrical components inside the AC.

7. What causes my AC display to go blank unexpectedly?

Ans- A blank AC display can be caused by power supply issues, faulty wiring, or a malfunction in the display panel or PCB (Printed Circuit Board). Voltage fluctuations or excessive dust accumulation can also lead to a blank screen.

8. Can a dirty AC unit cause the display to stop working?

Ans- Yes, dust accumulation inside the AC unit can damage the internal components, including the display. Regular cleaning of the AC unit can prevent dust buildup and ensure that the display continues to function properly.

9. Is it necessary to replace the entire PCB if the display is not working?

Ans- Not necessarily. In many cases, a faulty PCB can be repaired. However, if the damage is extensive or irreparable, replacing the PCB might be the best solution to restore proper display functionality.

10. Why is my AC display screen not responding to remote control?

Ans- The remote’s batteries might be dead, or there could be a faulty sensor or PCB issue affecting the response.

11. Why is my AC display flickering occasionally?

Ans- Flickering AC displays are usually caused by power fluctuations, a faulty display panel, or loose wires. Check for a stable power source and ensure all connections are secure.

12. How can I fix an AC display that shows incorrect information?

Ans- If your AC display is showing incorrect temperatures or modes, it could be due to a faulty display board or issues with the PCB. Try restarting the AC, resetting the remote settings, and checking the wiring connections. If the problem persists, a technician may be needed.