BMW

Error codes, malfunctions and repairs of Carrier air conditioners. What do the words and symbols on the air conditioner remote mean? The red pre def light is flashing on the air conditioner.

Is your air conditioner blinking instead of turning on normally? We assure you, this is not a reason to panic. The fact that the split system generates an error indicates that its self-diagnosis system is triggered, which prevents the failure of expensive parts. What to do if the air conditioner blinks? Urgently contact our company “Climate Pro”. You can do this by calling us at the phone number listed on the website. When placing an order, it is advisable to briefly describe your problem. This will help our technician suggest the cause of the problem and ways to eliminate it. We carry out professional diagnostics and all repair work at the installation site of the air conditioner. This means that you don’t need to remove it yourself and take it to the workshop. Our company's repair team arrives the next day after receiving the order. You can also place an urgent order, and then we will solve your problem within 24 hours. Our visit to the site located within the Moscow Ring Road is free.

Why is the air conditioner blinking?

The blinking of the air conditioner indicates errors in its operation. It warns the user about the presence of malfunctions, which, if ignored, can lead to extremely undesirable consequences - failure of the engine, compressor or board. Blinking indicators are equipped with those models of home air conditioners that are equipped with a self-diagnosis system. It prevents the device from turning on and causes the timer to blink.

The blinking of the air conditioner may indicate the following malfunctions:

Data transmission between the indoor and outdoor units is disrupted;
Increased or decreased voltage in the network;
The refrigerant pressure has been exceeded;
The compressor temperature is outside the limits;
The evaporator temperature sensor is broken;
There is no condensate drainage, etc.

It is impossible to independently determine the cause of the air conditioner blinking, much less eliminate the malfunction. This can only be done by experienced specialists, who are the masters of our company. Right on the spot, they will conduct a full diagnosis of the air conditioner and carry out all the necessary repair work. Very soon your device will stop blinking and will work stably, performing its assigned functions - air conditioning in the room.

Troubleshooting if the air conditioner blinks

If the air conditioner blinks, repairs in Moscow are performed at the customer’s home. It is preceded by diagnostics, which makes it possible to establish the cause of his blinking and determine ways to eliminate it. The cost of diagnostics performed by our company’s specialists is 1,500 rubles. It is a mandatory procedure. Without it, we do not begin any repairs.

Further actions of our specialists will depend on what testing of the air conditioner showed. You may need:

Extended cleaning, the cost of which is 2500 rubles;
Comprehensive maintenance, the price of which, taking into account the diagnostics performed, is 3,500 rubles;
Additional cleaning of the indoor unit;
Replacement of worn parts and components.

We perform all types of cleaning of the indoor and outdoor units, as well as comprehensive maintenance of the air conditioner on the day of your call. As for carrying out repairs, which involve replacing worn parts and assemblies, we discuss the feasibility of carrying it out together with the customer after announcing the final amount for the work.

Deciphering error codes for General Climate air conditioners makes it possible to troubleshoot problems without calling a service technician.

Air conditioner error codes , displayed on the remote control:

E2 – no contact with temperature sensor;
E3 – no contact with the evaporator temperature sensor;
E4 – no contact with the condenser temperature sensor;
E5 – the temperature of the drain pump motor is increased;
E6 – the protection mode of the outdoor unit is turned on (electrical circuit break, overheating protection);
E7 – no contact with EEPROM;
E8 – the water drain pan is filled to the top.

Error codes on displays

Some errors can be corrected yourself. To eliminate others, you will have to contact a specialist:

operation+timer+def/fan – too much voltage is supplied to the compressor more than once every 15 minutes. The air conditioner should be unplugged from the electrical outlet;
water alarm LED (blinking) – there is too much water in the condensate container for no longer than 3 minutes. The sump pump must be started manually;
water alarm LED (constantly lit) – the container is overfilled for more than 3 minutes. The device is in emergency mode. In order to clear this error code, you should disconnect it from the electricity supply;
def/fan (pre/def) – no contact with the temperature sensor on the condenser. The device will start working as soon as the temperature sensor turns on;
All the lights are blinking - a malfunction of the outdoor unit (overheating or hypothermia, power failure);
Timer – short circuit or no contact with the internal temperature sensor;
Operation – there is no contact with the temperature sensor on the evaporator or there is a short circuit in it;
operation+timer – contact failure with EEPROM. You cannot fix this error yourself, since you need to install a new control board.

Error codes for split systems type S-HR

Even among one equipment manufacturer, the designations always differ, so you should carefully study the instructions and know the exact model of your air conditioner and its units (internal and external). Only after these steps can you select the exact decoding of such codes on the air conditioner as pre/def. Below is a table for just such a case.

Be careful, these codes are valid for the following models: S12HR, S09HR, S18HR, S07HR.

operation	timer	defrosting	What is the problem
blinks	does not burn	blinks	Compressor receives too high voltage four times in a row
Does not burn	blinks	blinks	The indoor module fan has been running for more than a minute
blinks	blinks	blinks	The compressor costs
does not burn	does not burn	blinks	There is no contact with the temperature sensor on the pipes of the indoor module
does not burn	blinks	does not burn	There is no contact with the indoor module temperature sensor that measures the room temperature
on	blinks	does not burn	EEPROM function failure

General Climate air conditioner error for model S24HR

operation	timer	defrosting	auto	What is the problem
blinks	blinks	blinks	blinks	Overvoltage on the compressor was observed four times
Does not burn	blinks	Does not burn	Does not burn	The temperature sensor of the indoor module does not function
blinks	Does not burn	Does not burn	Does not burn	The temperature sensor on the pipes of the indoor module does not function
Does not burn	Does not burn	blinks	Does not burn	The temperature sensor of the external module does not function
Does not burn	Does not burn	blinks	blinks	Excess voltage on the external module or thermistor function is broken
Does not burn	Does not burn	Does not burn	blinks	EEPROM function failure

The indoor unit of the air conditioner can diagnose problems and fix them at the same time (if possible). The list of faults and their codes are contained in the table (see below).
While diagnosing a malfunction, the green indicator (P) and orange indicator (R) flash at a frequency of 0.1 seconds, indicating the malfunction code. The orange indicator (R) corresponds to the tens in the number - the fault code. The green indicator (P) corresponds to the units in the number - the fault code.
2 seconds pass between flashing orange and green indicators. The sequence is repeated at intervals of 4 seconds.

Example: fault code 13:

Orange indicator flashes once
Both indicators are off for 2 seconds
The green indicator flashes three times at 0.5 second intervals.
Both indicators are off for 4 seconds

The sequence is repeated until the fault is eliminated. If the fault code is less than 10, the orange indicator does not blink.

Code Description
2 - Malfunction of the room temperature sensor
3 - Malfunction of the temperature sensor of the internal heat exchanger Tc
6 - Malfunction of the reversing valve of the outdoor unit
8 - Malfunction of the fan motor in the indoor unit
9 - Power is not supplied to the indoor unit
11 - Drain pump malfunction or other drainage problems
12 - Error in the indoor unit software (incorrect addressing)
13 - Configuration error
14 - Loss of signal from the central control system
15 - Malfunction of internal heat exchanger temperature sensor Tcj
18 - Malfunction of the outdoor unit control unit (short circuit protection G-Tr)
20 - Error in the block position recognition circuit
21 - Malfunction of the current sensor in the outdoor unit
22 - Malfunction of the external heat exchanger temperature sensor
23 - Discharge temperature sensor malfunction
24 - Malfunction of the outdoor unit fan
26 - Other malfunction of the outdoor unit
27 - The compressor of the outdoor unit is blocked
28 - Inadmissible discharge temperature
29 - Malfunction of the outdoor unit compressor
31 - Increased pressure in the outdoor unit circuit

If an air conditioner malfunction is detected, write down its code, turn off the air conditioner, disconnect it from the power supply and contact a service center.

SYMPTOMS THAT ARE NOT AIR CONDITIONER DEFECTS
Symptom 1: Air conditioner not working
■ The air conditioner does not start immediately after pressing the power ON/OFF button on the remote control. If the operation indicator is lit, the system is in normal condition. To prevent overload of the compressor motor, the air conditioner starts 3 minutes after pressing the button.

■ If the operation and defrost indicators "PRE-DEF*" are lit, the heating mode is selected. When the air conditioner is turned on, the compressor does not start immediately (if the cold air protection function is activated) due to the temperature of the air leaving the indoor unit being too low.

Symptom 2: Switching to Fan Only Mode During Cooling Mode Operation
■ To prevent the indoor unit evaporator from freezing, the system automatically switches to Fan Only mode and returns to Cooling mode after a while.

■ When the room temperature drops to the set value, the compressor stops and the indoor unit automatically switches to Fan Only mode, and when the temperature rises, the compressor starts again. The same principle of operation is incorporated into the control system when operating in heating mode.

Symptom 3: White mist coming out of the unit
Symptom 3.1: indoor unit
■ If the relative air humidity is high and the internal surface of the unit operating in cooling mode is heavily soiled, the temperature distribution in the room becomes uneven. It is necessary to completely clean the indoor unit. Consult your local dealer for detailed cleaning information. This work must be carried out by a qualified specialist.

Symptom 3.2: indoor and outdoor units
■ When the system switches to heating mode after the defrosting operation is completed, the moisture generated during defrosting turns into steam and is removed from the system.

Symptom 4: The air conditioner makes noise in cooling mode
Symptom 4.1: indoor unit
■ When the system is in cooling mode or in stop state, a continuous low hissing sound is heard.
A sound is heard when the drain pump (optional accessory) is running.

■ When the system is stopped in heating mode, a quiet crackling noise is heard.
The reason for the appearance of sounds is the deformation of plastic parts when their temperature changes.

Symptom 4.2: indoor and outdoor units
■ A continuous low hissing sound is heard when the system is operating. The sound is caused by the passage of refrigerant vapor through the indoor and outdoor units.

■ A low hissing sound is heard during startup, immediately after a stop operation is completed, or during a defrost operation. The sound occurs when the rate of refrigerant circulation through the refrigeration circuit changes.

Symptom 4.3: Outdoor unit
■ The pitch of the air conditioner operating sound changes. A change in pitch is caused by a change in rotation speed
fan

Symptom 5: Dust is blowing out of the unit
■ When using the air conditioner for the first time after a long period of inactivity.
Dust that has accumulated in it during a period of inactivity is blown out of the unit.

Symptom 6: The unit emits strange odors
■ The unit can absorb odors from the room, furniture, tobacco smoke, etc., and then release them into the air stream.

Symptom 7: Low outdoor unit fan speed
■ When the air conditioner is running, the fan speed is adjusted to optimize system performance.

TROUBLESHOOTING
Air conditioner malfunctions and causes of their occurrence
If any of the following malfunctions occur, stop the air conditioner, turn off the power, and contact your local service organization.

■ The unit operation indicator blinks quickly (5 blinks per second). The operation indicator continues to flash quickly after turning the power off and on again (see Tables 7-1a, 7-1b and 7-2).
■ The remote control has malfunctioned or the remote control buttons do not function.
■ A safety device (fuse or circuit breaker) trips frequently.
■ Foreign objects or water have entered the unit.
■ Water is leaking from the indoor unit.
■ Other malfunctions have occurred.
If malfunctions of the air conditioner occur, except for the above cases or malfunctions whose causes are obvious, analyze the behavior of the air conditioner according to the recommendations below (see table).

Table 1 (data for inverter models)

№	Malfunction	Indicator work	Indicator timer	Indicator PRE-DEF	Indicator emergency alarm	Digital display
1	indoor unit fan drive			©	©	E8
2	Communication failure between blocks		©			E1
3		©				E2
4	Pipe temperature sensor error T2	©				EZ
5	T2B pipe temperature sensor error	©				E4
6	EEPROM failure			©		E7
7					©	HER
8					O	Ed
9	Communication failure between master and slave indoor units		©		©	F3
10	Other malfunction of the master or slave unit	©			©	F4
© - Flicker with a frequency of 2.5 times per second, O - Flicker with a frequency of 1 time per 2 seconds

Table 2 (data for constant performance models)

№	Malfunction	Indicator work	Indicator timer	Indicator PRE-DEF	Indicator emergency alarm	Digital display
1	Room temperature sensor error		©			E2
2	Pipe temperature sensor error	©				EZ
3	Outside temperature sensor error			©		E4
4	Outdoor unit malfunction	©	©	©	©	E6
5	Pump temperature sensor error				©	E5
6	EEPROM failure	©	©			E7
7	Overfill protection triggered				©	E8
8	Rotation speed control error engine		©		©	Eb
9	Triggering of low pressure protection	©	©	©		Ed
© - Flickering at a frequency of 5 times per second

Air conditioners have become indispensable household appliances designed to maintain human comfort. But due to the many different buttons, sometimes, especially for beginners, it is difficult to select and find the appropriate air conditioner mode.

Using this device is not as difficult as it might seem at the very beginning. As a rule, the buttons and their designations are the same on all remote controls, and if you learn and remember them, you can easily use different models in the future.

The remote control is a candy bar with control buttons and a display that shows the selected mode. At the very end there is a special LED with infrared rays. Thanks to this diode, when directing the device to an air conditioning device, it is possible to remotely control household appliances. When you constantly press the button with your finger, the signal is sent to the air conditioner all the time, and the battery charge is wasted. But in the quiet state of the remote control, the battery is not active, which helps to economically consume electrical energy.

Remote control with a classic set of buttons

Symbols on the air conditioner remote control

Let's look at the main symbols on the control device:

The dry function, located in the air conditioner, dehumidifies the air in the apartment. This button is very helpful during rainy periods, in the fall or spring before turning on the heating, when the humidity in the room is high.
The TRV button means the operation of the thermostatic valve. In other words, using this function you can adjust the cooling operation.
The fan icon means adjusting the fan speed or air flow intensity mode. By pressing this button again, you can change the operating speed to the required one.
The heat function on any air conditioner literally translates as heating. You can turn on the heating of the room thanks to warm air flows. The heat heating mode is indicated by a schematic drawing of the sun on the air conditioner.
The dehumidification mode is the same as the dry mode in the air conditioner, only it is called differently and has a designation in the form of a drop.
The cool button performs the opposite function of heating. Thanks to this button, you can turn on the room cooling mode. This is especially good on hot summer days, when the heat makes staying in a city apartment unbearable. This button is indicated by a snowflake.
The TURBO function means increased airflow. By turning it on, you can force the fan to supply increased air flow at high speed. Thus, the room is artificially ventilated without opening windows. And it will take much less time.

TURBO button

The Swing function helps the air to be distributed evenly throughout the apartment. This happens thanks to the special movement of the dampers.
Ifeel mode is designed to determine an individual comfortable temperature. Due to the fact that users often do not know what temperature in the room will be most comfortable for them, there is a thoughtless waste of electricity. And in this case, the I feel digger comes to the rescue. The technology is highly accurate: if for some reason the temperature in the apartment is below the required degree, the household appliance set to this mode begins to warm the air, automatically turning on the heat mode. And, conversely, when the temperature rises, the device immediately turns on air cooling. Thanks to this function, the room temperature will be maintained as comfortable as possible for your stay.
Hi or H1 - the designation of these characters appears on the screen during failures as an error. When these combinations appear on the display, you should know that for some reason the device has entered the defrost mode. In order to eliminate the error, simply turn off the remote control, wait a while and turn it on again. After this, you can set the desired mode.
Pre def is also an error code that is often found in the operation of air conditioners. It means that contact with the temperature sensor is temporarily lost. This happens due to various failures in the electronic system or problems with electricity. In order to restore the operation of the device, you just need to wait until contact with the temperature sensor is restored.
On timer / Off timer – setting will help set the device to automatic mode. It can be configured to turn off or turn on the desired mode at a specific specified time. This function is very convenient at night or when the owners of the apartment are away.

On/off timer button

Buttons for turning on and off a household appliance are necessary in order to turn the equipment on or off if necessary.
The cancel or CANCEL button helps the user to cancel a mode set by mistake.
Using the CLOCK button, you can set the time, which is very convenient for automatic mode, on/off timer, and simply using this device as a clock.
The LOCK function helps you lock all buttons on the remote control. This function helps out when there are children or pets in the family, and they can accidentally press and thereby reset all settings.
If the remote control has a backlight function, the LED button may be useful. It is needed for automatic backlighting of the remote control. Helps well in the dark.

What to do if the air conditioner does not follow the remote control commands

If the device does not respond to the remote control, you should:

make sure that the power supply system is working;
check the integrity of the case, screen, buttons;
make sure that the remote control emits infrared rays by taking a photograph, otherwise you will need to purchase a new remote control;
check the electrical network in the room to eliminate the cause of power fluctuations;
check the batteries for functionality.

To ensure that the remote control is not lost and is not subject to mechanical stress, shock, or pressure, you must purchase a special mount for it. It must be installed in a place that is accessible for use, handy and convenient.

The air conditioner remote control is an important component of this household electrical appliance. Without it, the air conditioner can only be started in automatic mode. But if for some reason the remote control is lost or broken and cannot be restored, you can purchase a universal one, suitable for all models and manufacturers.

Universal air conditioner remote control

An inverter air conditioner is a device whose operation is independently controlled by a compressor. When the maximum temperature is reached, such an air conditioner does not turn off, but reduces the degrees to maintain a constant comfortable temperature.

If you take a little time and understand the symbols of the buttons on the air conditioner remote control, you will find that using this device is not so difficult. Moreover, only a few main buttons stand out, the rest are used quite rarely.