Why the air conditioner does not respond to the control panel: reasons and what to do

Many users get so used to controlling the split system by hand that the situation when The air conditioner does not respond to the remote controlseems like a disaster to them. And although the failure of a box with buttons is not surprising, to understand reasons definitely necessary.

Types of faults - diagnostics

There are several failure options that could result in The air conditioner stopped responding to the remote control. To establish the cause, it is necessary to sequentially diagnose all links in the chain: from the remote control to the air conditioner control board. This is the only way to find the reason why electronics air conditioner does not respond to remote control.

Diagnostic scheme:

1. The remote control is checked and the batteries are replaced with known working batteries.
2. The power supply is being checked to determine whether the board responds to commands.
3. The board is dismantled and a control part that is known to be working is installed. If air conditioner responds to commands, then the problem is block electronics.

Oddly enough, but in 70% of cases it is the fault Remote Control. This is where you need to start diagnosing.

First check

Home split systems are controlled using the infrared LED of the remote control and the air conditioner receiving sensor located on the front panel. Often the window is even tilted down, as, for example, in split-systems Samsungso that the glare does not interfere with reception signal.

If the system does not respond to the remote control management, then the first thing that comes to mind is to come closer, reach out and press the button harder. Sometimes this works if you are very discharged batteries and the signal is weak. Therefore, it is necessary to replace the batteries and try again. If the split system does not respond, then more detailed diagnostics will be required.

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Radiation testing

What to do if the remote control is broken? Often problem, due to which the system does not respond to commands, is faulty LED Unfortunately, a person cannot see the flashes of the emitting element; his eyes do not react to infrared radiation.

But you can use a special multimeter equipped with an infrared port. Just bring the remote control to the receiving window device and turn on signal reception mode. If the multimeter shows no signal and there is no response from pressing the buttons, then the device being tested may be faulty.

To eliminate the error, it is necessary to conduct a control test. Use a working device from the TV, for example, a universal remote control Hisense. If the multimeter responds to Hysens, then the problem is clearly in the remote control.

Check The device can be used using a smartphone that has a night shooting mode. Just point the camera and press the power button a couple of times. On the screen you will be able to see a “queue” of barely visible flashes. If they are not there, then the split system will obviously not turn on from the remote control due to a breakdown of the device.

Replacement check

Often you simply don’t have a multimeter or a smartphone with a good camera at hand, but to establish the reason why the air conditioner won't turn on, need it urgently.

One of the verification methods involves the use of universal PUs, such as Lessar or Gree. Their built-in command set is suitable for any device, so there is a chance that the air conditioner will respond at least on and off.

What to do if the split system control panel does not work

Before buying a new one, you need to try to repair the “native” PU. In approximately half of the cases, the split system does not work with the control unit due to a non-working keyboard.

There are two options:

• due to pressing the buttons of the silicone keyboard too hard, the ferrite inserts were crushed;
• track contacts are dirty.

First All you need to do is remove the batteries and disassemble the case. Inside you will see an electronic board and a silicone pad with buttons on top. You can feel the board and silicone with your fingers. Often the batteries short out, the electrolyte leaks out and ends up on the board. The contact disappears, as a result the air conditioner will not respond, even if new batteries are inserted.

All that is required is to wash the keyboard under water and liquid soap. Any spare toothbrush will do for this. You need to wash it thoroughly, especially the ferrite inserts in the buttons. If even a little electrolyte remains, the control unit will not respond to button presses.

The board is not washed; the contact tracks are wiped with alcohol several times to remove plaque. Before assembling, the parts must be dried to remove any remaining moisture.

You should immediately pay attention to the condition of the keyboard. The ferrite “spots” inserted into each button must be intact. But even if the ferrite is cracked, it can be repaired. For example, rub it with graphite or stick pieces of foil on top.

You need to glue it carefully, using a minimum amount of conductive glue.In this case, the air conditioner may not respond to pressing the button the first time. A damaged button will require three to four presses.

What to do if the remote control is working but the air conditioner is not working

If a preliminary check has shown that the “native” control unit is working properly, but the split system is silent and does not respond to pressing even the outer panel of the unit, the reason must be sought in the electrical wiring.

First of all, you need to check the voltage in the network. If the multimeter shows 220-235 V, then the socket is working and there are no complaints about it.

The next steps are more complex:

• The air conditioner must be de-energized and unplugged;
• Next, you need to lift the block cover and remove it from the hinges;
• remove the filter mesh;
• Use a screwdriver to remove the screws and remove the casing lining.

Right on internal The split system unit contains a power supply. You need to get to it and check the supply voltage at the input terminals. Often this requires removing additional blocks.

Advice! This is not difficult, but you need to remember the location of the parts and the method of fastening them. Therefore, before removing the knot, it is photographed on the phone. This will be a hint during assembly.

As soon as you have access to the power supply, you will need to remove the terminals in the power supply housing, then plug the air conditioner cord into the outlet and check the voltage again. If power is supplied, then remove the plug from the socket and remove the power supply and control board.

You can repair the power supply yourself; sometimes, in order for the air conditioner to start responding to commands, it is enough to clean the contacts or replace the fuse. In more complex situations, it is necessary to replace the burnt-out filter capacitor.

The board is usually rejected if, after restoring the power supply and installing it on the air conditioner, it still does not respond to commands, both from the remote control and from the external panel. To check, you can temporarily install for air conditioning working control board, connect power supply and power cord. If the split system begins to respond and execute commands from the remote control, then the problem is in the board.

There is no point in repairing it; it is cheaper to buy a Chinese equivalent. Before installing a new part on an air conditioner, it is better to test it on a working split system. Since the cause of the board failure could not be determined, it is possible that the culprit for the board not executing the remote control commands is the power supply.

Therefore, a new control unit is installed on the air conditioner only after checking its performance. If in the future it turns out that the split system again stops responding to commands from the remote control, then it will not be difficult to determine the culprit; it will be the power supply.

How to control an air conditioner without a remote control

Some manufacturers of split systems indicate in the instructions the models of remote controls from other air conditioners that can be used for this brand. But complete interchangeability, as a rule, does not happen, so the air conditioner can only respond to some built-in commands. In addition, the layout of the buttons on the keyboard is different, so you need to get used to using a different remote control.

The easiest way is to buy a universal model for controlling a TV, split system or home theater. But such remote controls require “training” and software configuration. The new device can only respond to on and off commands. The rest will need to be recorded from the air conditioner window.

In addition, there are many ready-made applications for smartphones.If your phone has an infrared port, it can be configured to control the air conditioner. Moreover, the air conditioner will respond and execute commands as if it were a native remote control.

Moreover, the application may have additional functionality that will allow you to program the operation of the split system. But first you need to establish the range with which the air conditioner reacts and executes commands from your smartphone. The phone will have to be stored somewhere within reach of the split system.

Air conditioning is possible launch and stop manually, simply pressing control button on the front panel of the case. True, for this you will have to climb to the split system every time using a folding ladder.

Healthy: Correct use of a split system

Results

If the split system does not respond from the remote control, then this is not a reason to panic. In most cases, the reason for the stop is a soured keyboard or dead batteries. It is quite possible to restore the operation of the control unit with your own hands; only in some cases you will need a multimeter or a smartphone.

Tell us about your experience restoring the operation of the split system. How did you manage to get it to work on the command of the PU? Also, if you found the information useful, share the article on social networks and bookmark it.