What is the fault when the indicator light of the indoor unit of the air conditioner flashes 4

The probable cause is the phenomenon of the compressor protection device tripping.

Compressor overload protection will trip, indicating that the system is too high-pressure, the pressure is too high, or the overheating current is too high.

Causes and elimination of high pressure and overheating:

1. Too much refrigerant. Reduce the refrigeration dose appropriately.

2. Poor heat dissipation. Check the condenser pipe for dirt and dirt and clean the condenser.

3. The pipeline system is blocked. Refer to the pressure gauge to judge, eliminate, and re-process systematically.

4. Dust and fouling of the evaporator or filter screen. The airflow becomes smaller, the system pressure and temperature are unstable, and the evaporator or filter is cleaned.

5. Fluoride deficiency is also possible. When there is a lack of fluorine, the compressor discharge temperature will overheat, causing the overheating load protection switch to trip.

The electrical problem is:

1. Control circuit board failure.

2. The temperature sensor is overloaded and the information is wrong.

3. The power supply wiring is loose and the contact is poor.

4. The starting capacitor or compressor starting coil is burned out.

The information is insufficient, it can only be analyzed in this way, and there are many other possibilities, it is recommended to find a professional maintenance personnel to check it.

Hope it can help you, satisfied. Thank you.

When encountering a failure of the air conditioner, we must strictly follow the scientific procedures, and do not act blindly and disassemble at will when the situation is unclear, the fault is unclear, and there are countless in the heart. The consequence of this often amplifies existing faults, increases operating costs, shortens the normal service life of equipment, and leads to early scrapping of equipment.

Haier air conditioner power lamp flashing time 5 is a failure of the indoor thermostat, which should be faulty** display.

Haier Air Conditioner Failure**:

E0 row system failure.

E1 Room thermostat malfunction.

E2 Indoor Coil Sensor Failure.

E3 Outdoor Ambient Temperature Sensor Failure.

E4 Outdoor Coil Sensor Fault.

E5 overcurrent protection.

E6 Line Pressure Protection.

The E7 panel is faulty with the motherboard.

E8 motherboard communication with the outdoors is faulty.

E9 Phase Sequence Failure.

The phase sequence may be inaccurate. FYI.

Causes

1. Too much refrigerant. Reduce the refrigeration dose appropriately.

2. Poor heat dissipation. Check the condenser pipe for dirt and dirt and clean the condenser.

3. The pipeline system is blocked. Refer to the pressure gauge to judge, eliminate, and re-process systematically.

Refrigeration settingsFrom the perspective of the summer air conditioner boot index, 30-33 belongs to level 4, and 70% of people need to turn it on; 33-35 is class 5, 90% of people need to turn it on. After turning on the air conditioner, pay attention to adjust the indoor and outdoor temperature difference, the room temperature should be set at about 24 -18, and the indoor and outdoor temperature difference should not exceed 7.

If the outdoor temperature is 32 degrees, the indoor air conditioner is generally 25 degrees.

When the air conditioner is cooling, the temperature is set to about 26-28, in this case, not only the human body feels more comfortable, but also conducive to energy saving. When the air conditioner is cooling, do not set too low temperature, when the room temperature is adjusted to 26-27 degrees, the cooling load can be reduced by more than 8%. Experiments have shown that under normal circumstances, the room temperature is kept at 28-29 degrees, the humidity is kept at 50-60%, and people do not feel stuffy and do not sweat.

It is in the comfort range. When people are sleeping, the metabolic amount is reduced by 30-50%, and the air conditioner can be set in the sleep switch gear, and the temperature can be set 1 degree higher, which can achieve 10% power saving;

The air conditioner does not work: Generally, the main control board is broken, the connection line is broken, the joint is loose, the contact is poor, the compressor is broken, etc. If it is not possible to shut down and restart, it is recommended to contact the after-sales service, or ask a professional maintenance personnel to check and repair. FYI.

If the air conditioner flashes five times and the external unit does not work, the air conditioner is faulty, and you need to refer to the manual to check the type of fault, or find someone to check and repair it.

Summary. The timing light flashes 5 times because of the communication failure with the strong current board of the electronic expansion valve.

Running the light flashing 5 times is an abnormality in the evaporation temperature sensor, but it is also possible.

1. The ambient temperature of indoor and outdoor units is too low.

2. The air volume of the internal fan motor is too small.

What is the fault of Haier five-horse air conditioner patio machine running light flashing 5.

Hello, very happy to serve you, the light flashes 5 times when the hall is sleepy is a communication failure with the electronic expansion valve strong current board. Running the light flashing 5 times is an abnormality in the evaporation temperature sensor, and it is also possible. 1. The ambient temperature of the indoor and outdoor machines is too low.

2. The air volume of the internal fan motor is too small.

How many ks is this sensor.

Hello closed width, the most common 15k sensors are 5k, 10k, 15k, usually the air conditioner below the horse is basically 5k, 2-3 hp is more than 10k temperature control reed probe, 5 hp is 15k.

Indicator flashing: pressure protection (high voltage protection, low voltage protection).

Causes and solutions:

1. When the outdoor computer board detects that the high-pressure pressure switch is frequently disconnected, it will report a fault for the sake of protecting the system, and stop at the same time.

Solution: Check whether the pipeline is blocked, the inflation volume exceeds the standard, and the ambient temperature exceeds the specified requirements.

2. When the outdoor computer board detects that the low-pressure pressure switch is disconnected, it will report a fault for the sake of protecting the system, and stop at the same time.

Solution: Check the system pressure during operation, confirm whether there is refrigerant leakage or pipeline blockage, and re-power on after the above conditions are lifted to work normally.

3. The high-pressure pressure switch or low-pressure pressure switch is broken, and the contact still cannot be restored to the conduction state after the pressure returns to normal.

Solution: Replace the corresponding pressure switch, note: the replacement of the pressure switch needs to be carried out after the refrigerant is discharged, and it is necessary to confirm that there is no leakage after replacement.

4. The pressure switch detection circuit on the computer board is not correct, which causes the closed signal to be unable to input normally inside the chip.

Solution: Replace the computer board.

Who knows what is the fault of Haier's five-horse ceiling machine air conditioner running lights flashing four times? How should I fix it?

Who knows what is the fault of Haier's five-horse ceiling machine air conditioner running lights flashing four times? How should I fix it? Hello dear, the indicator light flashes to indicate pressure protection (high voltage protection, low voltage protection rise).

Causes and solutions for flickering: 1. The outdoor computer board detects that the high-pressure pressure switch is frequently disconnected, and the fault is reported for the sake of protecting the system, and the machine is shut down at the same time. Workaround:

Check whether there is a pipeline blockage, the inflation volume exceeds the standard, and the ambient temperature exceeds the specified requirements, and after these conditions are lifted, it can work normally when the power is turned on again. 2. The outdoor computer board detects that the low pressure is noisy and the wide front is closed and disconnected, and the fault is reported for the sake of protecting the system, and the machine is shut down at the same time. Workaround:

Check the pressure of the system during operation, confirm whether there is a refrigerant leak, or a blocked pipeline, and when these conditions are removed, the power is back on and can work normally. 3. The high-pressure pressure switch or low-pressure pressure switch is broken, and the contact still cannot be restored to the conduction state after the pressure returns to normal. Workaround:

Replace the corresponding pressure switch, pay attention to the refrigerant when replacing the pressure switch, and confirm that there is no leakage after replacement. 4. The pressure switch detection circuit on the computer board is abnormal, resulting in the closure signal being unable to be input into the chip normally. Hope it helps.

Summary. Hello, glad to answer for you.

Reasons: 1. The ambient temperature of indoor and outdoor units is too low.

2. The air volume of the internal fan motor is too small.

Solution: 1. Communication fault solution:

1. Phenomenon: see "Alarm display".

2. Detection: Test with multimeter AC voltage 250V, if the voltage changes back and forth between the neutral line (white line) and the signal line, and the communication indicator light of the indoor unit continues to flash, it indicates that the communication is normal, otherwise it will be faulty.

Solution: 1. Check whether the communication line is in good contact; whether the power cord is in good contact; Whether the neutral line and the live line are inverted.

2. Check whether the circuit board is damaged.

3. If the communication indicator of the indoor unit is "flashing" and "bright", it means that the outdoor substrate is broken.

4. If the communication indicator of the indoor unit is always on, it means that the indoor substrate is broken.

Second, Haier air conditioning failure**:

E0 row system failure.

E1 Room thermostat malfunction.

E2 Indoor Coil Sensor Failure.

E3 Outdoor Ambient Temperature Sensor Failure.

E4 Outdoor Coil Sensor Fault.

E5 overcurrent protection.

E6 Line Pressure Protection.

The E7 panel is faulty with the motherboard.

E8 motherboard communication with the outdoors is faulty.

E9 Phase Sequence Failure.

What is the fault of Haier five-horse air conditioner patio machine running light flashing 5.

Your question has been received, it will take a little time to type, please wait a while, please don't end the consultation, you can also provide more effective information, so that I can answer for you more coarsely and dry.

Hello, I am glad to answer the reasons for you: 1. The ambient temperature of indoor and outdoor units is too low. 2. The air volume of the internal fan motor is too small.

Solution: 1. Communication fault solution: 1. Phenomenon:

See "Alarm Display". 2. Detection: Test with multimeter AC voltage 250V, if the voltage changes back and forth between the neutral line (white line) and the signal line, and the communication indicator light of the indoor unit continues to flash, it indicates that the communication is normal, otherwise it will be faulty.

Solution: 1. Check whether the communication line is in good contact; whether the power cord is in good contact; Whether the neutral line and the live line are inverted. 2. Check whether the circuit board is damaged.

3. If the communication indicator of the indoor unit is "flashing" and "bright", it means that the outdoor substrate is broken. 4. If the communication indicator of the indoor unit is always on, it means that the indoor substrate is broken. Sakura Akira.

2. Haier air conditioner failure**: The E0 row system is faulty. E1 Room thermostat malfunction.

E2 Indoor Coil Sensor Failure. E3 Outdoor Ambient Temperature Sensor Failure. E4 Outdoor Coil Sensor Fault.

E5 overcurrent protection. E6 Line Pressure Protection. The E7 panel is faulty with the motherboard.

The E8 motherboard is late in communicating with the outdoors. E9 Phase Sequence Failure.