What is the problem with the Gree 5 HP air conditioner showing E4?

Gree five-horse air conditioner failure**e4: means that the exhaust temperature of the outdoor unit compressor is too high protection, which is usually caused by the following situations:

1: The refrigerant is insufficient, and the system pressure is low, resulting in the compressor exhaust temperature being too high;

2: In refrigeration mode, the condenser of the outdoor unit is dirty and the heat dissipation is poor, and the speed of the outdoor fan is not enough, which leads to the high exhaust temperature of the compressor.

3: In the heating mode, the filter screen of the inner machine is too dirty, or the speed of the indoor fan is not enough, which causes the compressor exhaust temperature to be too high.

4: There is a slight blockage in the system, which causes the compressor exhaust temperature to be too high for protection.

Gree air conditioner failure**Gree: 1Inverter cabinet E1-E5E1: press overcurrent, overheating, exhaust over-high, module protection;

E2: Indoor anti-freezing protection;

E3: Indoor temperature temperature sensor package open, short circuit;

E4: Indoor pipe temperature open, short circuit;

e5: Indoor and outdoor communication failure.

Fixed frequency machine failure**:

E1: Compressor high pressure protection.

E2: Evaporator anti-freeze protection.

E3: Compressor low pressure protection.

E4: Compressor exhaust temperature is too high protection.

E5: Overcurrent (Low Voltage Protection).

KF-60L WAK Split Vertical Cabinet Room Air Conditioner Failure** E1 1 There is an obstacle in front of the condenser.

2 The control loop is constant.

3 Start cooling when the outdoor ambient temperature is higher than 43 degrees.

4. The pressure of the high-pressure pipe is over-pressurized, and the high-pressure switch is activated.

E2 1 The indoor fan does not rotate or the tuyere is blocked.

2 The indoor ambient temperature is lower than 18 degrees.

3. The temperature sensing head of the tube is broken.

4. The plug of the thermometer plug is not plugged in properly.

5 The control loop is constant.

6 Capacitor C7 leakage.

Hello, the appearance of "E4" in the household air conditioner may be due to the exhaust high temperature protection Compressor exhaust protection Compressor exhaust high temperature protection, the specific cause of the fault needs to be determined after testing by a professional master.

The Gree air conditioner shows E4 because the air conditioner's air compression and shrinking machine exhaust temperature is too high.

Causes and maintenance methods of excessive compressor exhaust temperature protection:

1. The compressor cylinder is stuck or the refrigeration oil is insufficient, and the compressor coil is aging, etc., at this time, we replace the refrigeration oil in time or directly replace the compressor.

Second, the refrigeration system is dirty and blocked. Yes, the pipeline system is blocked, resulting in excessive locking pressure, and the compressor discharge temperature rises to the protective action. Maintenance method: timely cleaning of the system, replacement of refrigeration oil, replacement of filter capillary and replacement of refrigerant.

Wait and so on. There is also a dirty heat dissipation fin. The outdoor unit has poor heat dissipation, resulting in high pressure exhaust temperature and protection.

Extended Information: Gree Air Conditioner Failure**.

E1 system high voltage protection.

E2 internal freeze protection.

E3 system low voltage protection.

E4 compressor exhaust protection.

E5 low voltage overcurrent protection.

E6 sells faults.

E7 mode: Punch Pie.

E8 High Temperature Protection.

E9 cold wind protection.

F1 is open at room temperature and short-circuited.

F2 inner tube temperature open, short circuit.

F3 outer ring temperature open, short circuit.

F4 condenser.

The tube temperature is open and short-circuited.

The F5 outer exhaust pipe is open and short-circuited.

H1 defrosting. H2 electrostatic precipitator protection.

H3 compressor overload protection.

The H4 system is abnormal.

H5 module protection Gree air conditioner maintenance.

Gree air conditioner shows that E4 is the compressor exhaust temperature is too high protection.

Causes and solutions for the protection of excessive compressor exhaust temperature:

1. Compressor failure, compressor jamming cylinder or insufficient refrigeration oil, aging compressor coil, etc. will lead to high exhaust temperature.

2. The refrigeration system is dirty and blocked. The piping system is blocked, causing the locking pressure to be too high, and the compressor discharge temperature rises to the protective action.

3. The heat dissipation fins are dirty and blocked. The heat dissipation of the outdoor unit is poor, and the heat cannot be dissipated, resulting in the high pressure exhaust temperature being too high and protected.

4. Small air volume. The compressor exhaust temperature is too high due to damage to the fan or insufficient capacity of the fan starting capacitor.

5. The high-voltage protection device is damaged.

6. The compressor exhaust temperature switch is damaged. Measurement is not passable, open circuit state.

Small air volume solution: if the compressor exhaust temperature is too high caused by small air volume, you need to observe whether the outdoor unit fan rotates when the compressor starts, if not, use the multimeter ohm file to measure the resistance value of the starting capacitor and fan winding, if the resistance value is zero, it means that there is a problem, and directly replace the corresponding damaged parts.

Gree air conditioner malfunction** and meaning:

1. E1 protection: high-voltage protection for the system.

When the high-voltage protection is detected for 3s in a row, turn off other loads except the light box, shield all keys and remote control signals, and the indicator flashes and displays the fault**e1

2. E2 protection: indoor anti-freezing protection.

In the refrigeration and dehumidification mode, the compressor starts for 6min, and when the T evaporation <-5 is detected for 3min continuously, the indicator light flashes and displays fault **E2, and the compressor and external fan are stopped; When T steaming》6 and the compressor has been stopped for 3min, the indicator light is off, the LCD recovery display, and the original state is running. Keys are not blocked.

3. E3 protection: low-voltage protection for the system.

After the compressor starts for 3min, it starts to detect the low-pressure switch signal, if the low-pressure switch is detected to be disconnected for 3min in a row, the whole machine will stop, and the indicator light will flash and display the fault **e3 to prompt fluorine leakage.

4. E4 protection: high temperature protection for 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.

5. E5 protection: low voltage protection.

Hello, I have seen your question and am sorting out the answer, please wait a while

Gree five-horse air conditioner failure**e4: It means that the exhaust temperature of the compressor of the outdoor unit is too high to protect it.

It is usually caused by the following conditions:

1.The refrigerant is insufficient, and the system pressure is low, resulting in the compressor exhaust temperature being too high;

2.In refrigeration mode, the condenser of the outdoor unit is dirty and the heat dissipation is poor, and the speed of the outdoor fan is not enough, resulting in the compressor exhaust temperature being too high to protect it;

3.In heating mode, the filter screen of the inner unit is too dirty, or the speed of the indoor fan is not enough, which causes the compressor exhaust temperature to be too high.

4.There is a slight blockage in the system, which causes the compressor exhaust temperature to be too high to protect it.

Repair method:1First of all, distinguish whether it is a fixed frequency machine or a frequency conversion machine;

2.For the fixed frequency machine, E4 means that the outdoor unit should be maintained, of course, it may also be a false fault, that is, the temperature sensor head is short-circuited or open-circuited.

3.If it is a frequency converter, you need to check the temperature sensing head of the evaporator in the management room, and if there is too much dust, you can clean it up to make the circuit unblocked.

4.If you can't find the problem, you can ask a professional to repair it.

E4 compressor exhaust temperature sensor head failure!

There are a number of possible reasons for this:

1. The exhaust gas temperature sensor is faulty.

2. 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 showing E4).

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