Chunlai 3 hp air conditioner boot display fault E4 is the cause of the fault how to repair

The air conditioner reports that E4 is faulty, which means that the compressor exhaust temperature sensor head is faulty, and the compressor exhaust is protected. This may be due to insufficient refrigeration oil in the compressor jam, aging compressor coils, or dirty and clogged refrigeration systems. The solution is to replace the refrigeration oil, or simply replace the compressor, clean the refrigeration system, and replace the filter capillary.

Air conditioner, i.e., air conditioner, refers to the equipment that uses artificial means to regulate and control the parameters such as temperature, humidity, and flow rate of the ambient air in the building cavity or the ambient air in the structure. <

Demo model: Gree KFR-35GW NHA1BAJ System Version: Inverter Air Conditioner The E4 fault of the air conditioner indicates that the compressor exhaust temperature sensing head is faulty, and the compressor exhaust is protected.

This may be due to insufficient refrigeration oil in the compressor jam, aging compressor coils, or dirty and clogged refrigeration systems. The solution is to replace the refrigeration oil, or simply replace the compressor, clean the refrigeration system, and replace the filter capillary. Air conditioner, that is, air conditioner, refers to the equipment that uses artificial means to regulate and control the temperature, humidity, flow rate and other parameters of the ambient air in the building or structure.

There are two main situations when the air conditioner appears E4:

1. The problems of air conditioner E4 include compressor cylinder blockage or insufficient refrigeration oil, or compressor coil long-term suspicion. At this point, the refrigeration oil or compressor must be replaced immediately.

2. The air-conditioning and refrigeration system is dirty and blocked for a long time, the pipeline system is blocked, the locking pressure is too high, and the exhaust temperature of the compressor rises to the protective effect. In this case, the system needs to be cleaned, the air conditioner refrigeration oil replaced, and then the filter capillaries replaced.

The main inspection and judgment methods are as follows:

1. Plugging and unplugging method.

The "Plug-and-Plug Method" is a way to "unplug" or "plug in" plug-ins to find faults. For example, if the machine has a "deadlock", unplug the plug-in boards one by one in this way. If the machine is back to normal, it indicates that the fault is on the circuit board.

2. Alternative method.

3. Comparative law.

The "comparison method" is to compare the correct characteristics (waveform or voltage) with the characteristics (waveform or voltage) of the faulty machine to determine which component has inconsistent waveform or voltage, measure pole-by-pole according to the logic circuit diagram, make the signal detect point by point along the source direction, and determine the fault position after analysis.

Chunlan air conditioner shows E4 as high voltage protection, the main reason:

1. Line problems.

2. Motherboard problems.

3. The protector itself is a problem.

E4 appears after working after booting for a while

1. The outdoor condenser is dirty.

2. Too much refrigerant.

3. The current is too large.

It is recommended that you first clean the heat sink of the external machine and the filter screen of the internal machine, if it is still not solved after cleaning, it is recommended that you find the manufacturer to check it, Chunlan other faults**:

Fault**. The E1 exhaust temperature is too high.

E2 compressor overcurrent.

E3 phase sequence error.

The E4 system pressure is too high.

The E5 system pressure is too low.

What is the fault of the Chigo air conditioner showing E4**? What to do?

E4** is a fault of the temperature sensor of the outdoor unit, or an open circuit or short circuit of the temperature sensor of the outdoor unit.

For the anomaly of the outdoor unit, it needs to be analyzed on a case-by-case basis: if the E4 is still working and cooling, it is the temperature inside the pipe. Check whether the temperature sensor terminal plug is loose or in poor contact, and make sure that the temperature sensor is wired correctly.

The air conditioner shows that room E4 is a fault of the temperature sensor of the external unit. Please check whether the external condenser is dirty or blocked. The fan does not rotate or the fan speed is slow, resulting in poor heat dissipation.

Check that the connections are in good contact with the plug-ins on the circuit board, that they are securely fastened, that the evaporation of the pipe temperature sensor is good, and that the temperature detected by the pipe temperature sensor is good for the rental wheel, and that the temperature detected by the pipe temperature sensor reaches the cooling or heating temperature.

What does Gree 5P air conditioner failure **E4 stand for?

The exhaust temperature is too high to clean the machine.

Gree 5 HP air conditioner shows what is the problem with E4.

E4 is compressor exhaust protection. The specific cause of the failure needs to be checked and handled by Gree service personnel. Please contact Gree National Customer Service**4008-365-315 to feedback your needs and suggestions, or click here to make an appointment for service.

Air purifiers are more efficient than 3599. Air purifiers are more efficient than 3599. The air purifier is more effective than the homemade disinfectant 498, and the Gree Pearl inverter air conditioner is cool and naturally warm, and even the 26999 is more viewing.

E4 Protection: Exhaust pipe high temperature protection. After the compressor is started, when the discharge temperature is higher than 120 or the discharge temperature sensor is short-circuited (or open-circuited) for 30 seconds, the indicator flashes and the fault code E4 is displayed.

Fault code E4 cause: The motherboard or display board is faulty. Exhaust gas temperature sensor short circuit; Poor system leakage, clogging, or emptying.

Fault **E4: The first step is to determine the control fault or system failure, you can first disconnect the indoor unit motherboard outdoor compressor control row typesetting, if the indoor unit is running normally, you can determine that there is no problem with the indoor unit motherboard and display board, the fault fluorine leakage, blockage or bad empting system, can be judged by the pressure.

<> air conditioning failure**E4 may be caused by the failure of the detection circuit, focusing on checking the temperature sensor, connecting wire and connection plug-in, cabinet machine also need to check whether the connecting wire of the internal and external unit is bitten by mice, as well as the temperature sensor of the external unit, high and low voltage switch and other sensors.

The air conditioner displays E4, which means that the compressor exhaust temperature sensing head is faulty, and E4 protection: It is the high temperature protection of the exhaust pipe. After the compressor starts, when the exhaust temperature is detected to be higher than 120 or the exhaust temperature sensor is short-circuited (or open-circuited) for 30 consecutive seconds, the indicator flashes and shows fault **e4.

There are a number of possible reasons for this:

1 System blockage.

Compressor aging.

3 The heat dissipation of the external unit is not good.

4. The exhaust gas temperature sensor is faulty.

5. Lack of fluorine in the system (the pressure required for heating in winter, if the refrigerant is insufficient, the compressor will work aggravated, and the tube temperature will be overheated, thus displaying E4).

6. If the system is dirty or the heat dissipation is not good, it is recommended to clean the internal filter and the external condenser.

It may be that the exhaust temperature of the outdoor unit is too high to protect it, check whether the cooling fan of the external unit is running, whether the heat sink is too dirty, and clean the heat sink.

Chunlan air conditioner shows E4 as high voltage protection, the main reason:

1. Line problems.

2. Motherboard problems.

3. The protector itself is a problem.

E4 appears after working after booting for a while

1. The outdoor condenser is dirty.

2. Too much refrigerant.

3. The current is too large.

It is recommended that you first clean the heat sink of the external machine and the filter screen of the internal machine, if it is still not solved after cleaning, it is recommended that you find the manufacturer to check it, Chunlan other faults**:

Fault**. The E1 exhaust temperature is too high.

E2 compressor overcurrent.

E3 phase sequence error.

The E4 system pressure is too high.

The E5 system pressure is too low.

E4 IPM Protection, E4 System Pressure Over, E4 Refrigeration System Overpressure Protection, RT5 Sensor Abnormality, E4 Outdoor Tube Temperature Sensor Open or Short Circuit.