The air conditioner of the Kelon 120 shows what is wrong with the E3

KFR LW A01

Display** Cause of failure.

E1 Three-phase power supply is in the wrong phase.

The e2 power supply is out of phase.

E3 Indoor and outdoor communication failure.

E4 Indoor Ambient Temperature Failure.

E5 Indoor tube temperature failure.

E6 Outdoor tube temperature failure.

E8 Three-phase Electric Compressor Thermal Overload Relay Acting.

P1 Refrigeration System Overpressure Protection.

P2 Subcooling protection (refrigerated state).

P3 Overheat Protection (Heating State).

P4 Indoor machine A tube temperature sensor is faulty.

Model: Huabao 1-in-3 KF-[22GX2+47L]W MP5 Indoor B unit tube temperature sensor is faulty.

Model: Huabao 1-to-3 KF-[22GX2+47L]W M Huabao KFR LW C2SD1, C3SD1

Display** Cause of failure.

E1 Subcooling protection (refrigerated state).

E2 overheat protection (heating state).

E3 Outdoor Pressure Relay Protection.

Hello, if you need help, call 4006111 111 Hisense Kelon air conditioner national unified 24-hour service**!

E1 Three-phase power supply is in the wrong phase.

The e2 power supply is out of phase.

E3 Indoor and outdoor communication failure.

E4 Indoor Ambient Temperature Failure.

E5 Indoor tube temperature failure.

E6 Outdoor tube temperature failure.

E8 Three-phase Electric Compressor Thermal Overload Relay Acting.

P1 Refrigeration System Overpressure Protection.

P2 Subcooling protection (refrigerated state).

P3 Overheat Protection (Heating State).

P4 Indoor machine A tube temperature sensor is faulty.

There is a yellow signal line from the external unit to the internal unit, which is connected to the control board, through two 15k resistors, a diode, an optocoupler, to the controller. Most of them are、Optocoupler、Broken。 If the wiring is fine, that's the matter of these components.

E3 is refrigeration overload protection, that is, the evaporator of the internal machine is frozen.

The reasons for the occurrence of E3 are as follows:

1. The possibility of mice biting off the sensor wire is more than 60%, especially in public places such as restaurants.

2. The filter screen of the internal machine is dirty and blocked, and the possibility is more than half.

3. The reduction of the capacity of the internal fan leads to the low speed of the internal fan.

4. The back of the evaporator of the internal machine is too dirty, resulting in the evaporator not being ventilated.

5. Sensor resistance drift.

The correct way to use the air conditioner

1. Closed doors and rotten windows can not rely on air conditioning for a long time to raise and lower the temperature, disconnect the windows for ventilation, maintain indoor air circulation, and avoid lack of fresh air.

2. If ventilation equipment is not installed, a negative oxygen ionizer and a ventilator are installed at the same time as the air conditioner is installed, which can deliver a large amount of filtered fresh air to the air-conditioned room.

3. The temperature difference between indoor and outdoor is too large, do not adjust the indoor temperature too low in summer, and the temperature difference between indoor and outdoor should be 5 8.

4. The air conditioner and dehumidification device should be checked and cleaned regularly, especially the filter screen should be cleaned on time, so that it can really play the role of filtering dust, germs and harmful gases.

5. During daily use, do not set the temperature too low, so as not to affect the service life of the air conditioner in high-speed operation for a long time. It is best to set it in automatic mode, which can not only quickly refrigerate several rows, but also save electricity.

Hello Xinke air conditioner E3 fault ** means refrigeration overload protection, that is, the evaporator of the internal machine is frozen, it is likely that the line of the sensor is broken, the easiest way to deal with it is to remove the outer cover of the internal machine to check it, to see if the line of the internal fan is broken or the contact is poor, and the broken wire is connected.

The display E3 is compressor low pressure protection. Solution: 1. Determine whether the ambient temperature is too low.

2. Short connect the LPP plug on the main control board and the neutral line N on the motherboard, if the indoor unit is running normally, you can determine that the main board or display board of the indoor unit is fine, and the fault appears on the indoor and outdoor unit connection wires, plug joints or low-voltage switches of the outdoor unit. 3. Connect the cable and plug of the external machine, adjust the multimeter to the ohmic block, connect one meter pen to the LPP protection wire unplugged on the motherboard, and connect the other meter pen to the zero line N, if the resistance value is 0, it means that the fault is on the low-voltage switch, otherwise it is a line problem. 4. Use the pressure gauge to determine whether the system is leaking fluorine or blocked.

Extended information: Xinke air conditioning common faults**Maintenance: 1. Fault**E2 Fault causes:

Indoor evaporator temperature sensor short circuit or open circuit, compressor low pressure protection mechanism. Fault phenomenon: E2 is faulty, the air conditioner does not start and does not work.

Solution: 1. Overheat, try it after 30 minutes of inactivity. 2. The sensor is damaged and needs to be repaired.

3. Insufficient refrigerant. 4. The expansion valve is half-blocked, and the solenoid valve is faulty. 5. The filter is half blocked.

1. The sensor pins are loose or in poor contact. 2. The sensor is damaged and the resistance value is wrong. 3. The control circuit board is faulty, and it cannot receive and send the control signal.

In this case, it is recommended to call the product after-sales service for professional inspection and maintenance.

The fault of the Xinke air conditioner**E3 is the refrigeration overload protection, that is, the evaporator of the indoor unit is frozen. The main reasons for this failure are as follows:

The temperature sensor circuit is open.

The filter or evaporator of the indoor unit is clogged because it is too dirty.

The capacitance capacity of the indoor unit fan decreases or fails, resulting in the speed of the indoor unit fan being too low or not rotating.

The temperature sensor is damaged.

Hello dear! We'll be happy to answer for you. What is the fault of Xinke air conditioner E3 Answer:

The bridge of the new technology E3 means pressure seepage shrinker low pressure protection. Causes and solutions: 1. Determine if the ambient temperature is too low.

2. To determine whether it is a control fault or a system failure, you can first short connect the LPP plug on the main control board and the neutral line N on the motherboard, if the indoor unit is running normally, you can determine that the main board or display board of the indoor unit is fine, and the fault appears on the indoor, outdoor machine even Sun Shoumeng wiring, plug connector or outdoor unit low-voltage switch. 3. Connect the cable and plug of the external machine, adjust the multimeter to the ohmic block, connect one meter pen to the LPP protection wire unplugged on the motherboard, and connect the other meter pen to the zero line N, if the resistance value is 0, it means that the fault is on the low-voltage switch, otherwise it is a line problem. The fourth step is to determine whether the system is leaking fluorine or clogging through the pressure gauge.

E3 error** usually indicates that the outdoor unit of the air conditioner is malfunctioning. This could be due to one of the following reasons:

1.There is a problem with the power line of the outdoor unit, such as a short circuit or a broken circuit in the power line.

2.The electronic element of the outdoor unit has failed, such as a capacitor or circuit board.

3.The sensors of the outdoor unit, such as the temperature sensor or the pressure sensor, are faulty.

If your aircon shows an E3 error**, turn off your aircon immediately and contact a professional technician for inspection and repair. Do not attempt to repair it yourself to avoid causing greater damage or safety hazards.

The E3 fault of Xinke air conditioner refers to the E3 refrigeration overload protection, that is, the evaporator of the internal unit is frozen. Cause of failure:1

Rats bite off sensor wires, especially in public places such as restaurants. 2.The filter screen of the internal machine is dirty and blocked.

3.The reduced capacity of the internal fan leads to a low speed of the internal fan. 4.

The back of the internal machine is too dirty, resulting in the evaporator not notifying Yuyoufeng. 5.Sensor resistance drift.

E3 refrigeration overload protection, i.e. the evaporator of the internal machine is frozen. Cause: Dead branches 1, the possibility of rats biting off the sensor wire is more than 60%, especially in public places such as restaurants.

2. The filter screen of the internal machine is dirty and blocked, and the possibility is more than half. 3. The reduction of the capacity of the internal fan leads to the low speed of the internal fan. 4. The back of the evaporator of the internal machine is too dirty, resulting in the evaporator not being ventilated.

5. There is no sensitivity sensor resistance drift. The above is the reason for the failure of the new air conditioner**E3, it may be that the mouse bites off the sensor, or it may be that the filter screen of the new air conditioner is blocked or dirty, we need to correctly understand the reason for the occurrence of the **E3 of the new air conditioner, so that we can carry out the correct maintenance of the new air conditioner E3, and avoid the inconvenience of using the new air conditioner because of the failure of the new air conditioner.