Gree air-conditioning prevents high temperature-what does Gree air-conditioning prompt hs mean?

Everyone may have the problem of high temperature protection of Gree air conditioner during air conditioning. Today, I will look at the high temperature protection of Gree air-conditioning from the following aspects: what does Gree air-conditioning prompt hs mean, what does Gree air-conditioning display FO mean, how to deal with the high temperature protection of five compressors of Gree air-conditioning, and how to protect Gree from high pressure.

What does Gree air-conditioning prompt hs mean?

Gree air-conditioning display screen shows HS stands for H5, indicating that the module protection is invalid.

The main reasons why Gree air conditioner shows H5:

1. When the module has poor heat dissipation and the temperature is too high, Gree inverter air conditioner displays code H5.

2. Module protection includes overcurrent protection and overheating protection. Check whether the AC /DC voltage is too low and the compressor is overloaded.

Extended data:

Gree air conditioning fault code:

1, code E 1: system high voltage protection.

2. Code E2: Anti-freezing protection of internal machines

3. Code E3: System under-voltage protection

4. Code E4: Compressor Exhaust Protection

5. Code E5: Low Voltage Overcurrent Protection

5. Code E6: Communication failure

7. Code E7: Mode conflict

8. Code E8: High temperature protection

9. Code E9: Cold air protection

What does Gree air-conditioning prompt hs mean?

1) Gree air conditioner has no HS; It should be h5. 2) The meaning of the old code of Gree H5-"mildewproof" 1. Gree inverter air conditioner displays code H5 when the module is not well cooled and the temperature is high. 2. The module protection has overcurrent protection and overheating protection. Please check whether the AC /DC voltage is too low and the compressor is overloaded. 3) The solution of Gree H5 fault code 1. Check whether the compressor running current, outdoor fan speed and outdoor heat dissipation are good. 2. Check whether the thermal paste between the module and the radiator is evenly spread. 3. Method of judging the fault location: disconnect the compressor, see if the output AC voltages of U, V and W are balanced, and see if it will be displayed after running for a period of time. If it is displayed, it should be the motherboard. If it is not displayed, it should be that the outdoor unit has poor heat dissipation.

What does Gree air-conditioning prompt hs mean?

It should be H5. Gree air conditioner has no symbols such as HS. Only H5 indicator module protects against failure.

How to deal with the high exhaust temperature of Gree air-conditioning compressor?

I. Protection caused by temperature:

1, insufficient refrigerant or too small expansion valve opening, too high return air temperature, resulting in exhaust temperature exceeding the protection temperature, temperature protection (accompanied by low pressure).

2. The return air temperature is too high. It causes the exhaust temperature to rise, thus protecting the temperature (accompanied by low pressure).

3. The high temperature component of the expansion valve is too close to the compressor. The temperature detected by the temperature sensor is greater than the actual value, which makes the expansion valve open too much, and the refrigerant evaporates incompletely, and some of it enters the compressor in liquid state, resulting in the phenomenon of liquid hammer.

4. The working conditions of the condenser are relatively poor. Dirty condenser surface (dust or oil) leads to failure of normal heat exchange. Too high ambient temperature of the condenser leads to insufficient heat exchange, which leads to an increase in condensation temperature, a decrease in condensation, and an increase in pressure from the exhaust pipe to the condenser, which leads to high compressor exhaust pressure and temperature (temperature protection).

5. The compressor is short of oil or the motor bearing is damaged, which causes the motor to generate heat, and the heat cannot be released in time, resulting in temperature protection.

6. Wrong refrigerant charging type (different refrigerants, matching of oil and heat exchanger, matching of expansion valve, refrigerant charging amount, etc.). ).

Second, the protection caused by stress.

1, too much refrigerant. Hydraulic hammer occurs, the compressor is difficult to compress, and the load exceeds the standard, which leads to high-voltage protection (the pressure may not necessarily rise when temperature protection is carried out, but it must be accompanied by temperature rise when high-voltage protection is carried out because the motor is hot).

The pipeline is dirty and blocked. Such as filter blockage, capillary blockage, etc. , resulting in an increase in exhaust pressure, thus high-pressure protection.

There is air in the pipeline. Compression is difficult, resulting in high voltage protection.

4. The low pressure is too low. There are several reasons:

(1) There is too little refrigerant in the refrigeration system.

(2) The indoor heat exchanger or filter is blocked.

(3) The electronic expansion valve is too small.

(4) The fan speed of evaporation part is low or stopped.

(5) Semi-blockage of refrigeration system (dirty blockage, ice blockage, oil blockage).

Third, the treatment method:

1, excessive refrigerant, connect the pressure gauge to discharge the excessive refrigerant.

2. The outdoor condenser is dirty and blocked. Just clean the outdoor condenser and improve the cooling conditions of the condenser.

3, outdoor fan (cooling tower) capacitance attenuation, low speed, just replace the fan capacitance.

4. If the pressure switch itself fails, it can be replaced.

Extended data:

Working principle of air conditioning compressor:

1. The air conditioner compressor is used to compress and drive the refrigerant in the air conditioner refrigerant circuit. The working loop is divided into evaporation area and condensation area, and the indoor unit and outdoor unit belong to high pressure area or low pressure area respectively.

Compressors are usually installed outdoors. The compressor pumps the refrigerant from the low-pressure area, sends it to the high-pressure area for cooling and condensation after passing through the compressor, and radiates heat energy into the air through the heat sink. The refrigerant also changes from gas to liquid, and the pressure rises.

Then the refrigerant flows from the high-pressure area to the low-pressure area, and is injected into the evaporator through the capillary tube. The pressure suddenly drops, and the liquid refrigerant immediately becomes gaseous, and a lot of heat in the air is absorbed through the heat sink. In this way, when the machine continues to work, it will continuously absorb the heat energy at one end of the low-pressure zone into the refrigerant, and then send it to the high-pressure zone and radiate it into the air, thus playing a role in regulating the temperature.

2. When the air conditioner is in refrigeration operation, the low-temperature and low-pressure refrigerant gas is sucked by the compressor and pressurized into high-temperature and high-pressure refrigerant gas; The high-temperature and high-pressure refrigerant gas releases heat in the outdoor heat exchange gas and becomes a medium-temperature and high-pressure liquid; The medium-temperature and high-pressure liquid becomes low-temperature and low-pressure liquid after being throttled and depressurized by the throttling component; Low temperature and low pressure liquid refrigerant absorbs heat and evaporates in indoor heat exchange gas, and then enters the compressor for compression and reciprocating circulation.

3. The compressor is the heart of the refrigeration system, whether it is air conditioning, cold storage or chemical refrigeration technology. Air compressor is an important part of the guarantee! There are many kinds and forms of refrigeration compressors, which can be divided into two types according to principle: volumetric type and speed type, of which volumetric type is the most common.

How to deal with the high exhaust temperature of Gree air-conditioning compressor?

1, evaporator dirty: the most common reason for high-voltage protection of air conditioner is poor air conditioner. Of course, the reason why the air conditioner is not good is that the evaporator of the air conditioner is dirty and blocked. These things are interrelated. The solution is to clean the air conditioner evaporator regularly to ensure that the evaporator is not dirty or blocked.

2. Damage to the external fan: The wind speed of the external fan of the air conditioner is slowed down due to rain, rust or blockage, and the external fan is seriously damaged, resulting in high-voltage protection of the air conditioner. The solution is to clean up the bearing difference of air conditioning fan in time. It is best to apply some lubricating oil to the fan shaft to ensure that the fan is more stable and faster. As soon as it was opened, the ancient chapter of high-voltage protection of air conditioning was untied.

3. Air-conditioning outer seat: Some users put sundries around the air-conditioning outer seat, so that the air-conditioning outer seat is covered by objects, which makes the air-conditioning outer seat radiate abnormally, resulting in high-voltage protection of air-conditioning.

The solution is to remember that there are no sundries around the outer seat of the air conditioner, and it is forbidden to cover the things above the outer seat of the air conditioner. Although the cover on the outer baffle of the air conditioner can effectively prevent the air conditioner from being blown, exposed to the sun and rained, it will affect the refrigeration of the air conditioner and cause high-voltage protection of the air conditioner.

4. Too much refrigerant: too much refrigerant in the air conditioning pipeline will also cause high-pressure protection of air conditioning. The solution is to drain the excess refrigerant.

5. Outdoor high temperature: When the weather reaches a high temperature of 43℃, it is difficult for the air conditioner to cool, and high-voltage protection is more likely to occur at this time. This happens only when the external ambient temperature exceeds the standard. The solution is to adjust protective shutdown when the outdoor temperature is too high. We can turn off the air conditioner temporarily and turn it on later. Just turn on the air conditioner.

Extended data:

Compressor maintenance

1. Close the suction stop valve, start the compressor for a few minutes, and drain the refrigerant in the crankcase into the condenser to vacuum the crankcase. Stop the machine, immediately close the exhaust stop valve, slowly unscrew the bypass hole plug of the exhaust stop valve, and discharge the residual gas in the high pressure chamber. Unscrew the plug of the bypass hole of the suction stop valve, and install the conical joint and copper pipe.

2. Prepare lubricating oil. Press the oil suction nozzle with your fingers, start the compressor, and pump out the air in the crankcase. If the liquid hammer is found, let the compressor continue to work for 2-3 minutes, so that the crankcase is in a vacuum state, and stop when the finger pressing the nozzle feels strong suction. Dip the nozzle pressed by your finger into the oil, and then release it, and the oil will be sucked into the crankshaft pipe from the oil pipe.

3. Check whether the oil level indicator reaches the oil level and stop. Remove the copper pipe and connector, screw on the plug and tighten it, start the compressor to pump out the air in the crankcase, and tighten the plug of the exhaust stop valve when the exhaust sound is not heard. Open the cut-off valve of air intake and exhaust to complete the refueling operation.

How to deal with the high exhaust temperature of Gree air-conditioning compressor?

For air conditioners, the refrigerant in the system leaks to a certain extent, which will lead to high exhaust volume; The operation of outdoor fan motor will also lead to excessive exhaust temperature. It is necessary to comprehensively judge the exact cause of excessive exhaust temperature by combining exhaust pressure, working current and other parameters. A simple solution is to clean the outdoor heat exchanger first to see if the air conditioner still has the protection of excessive exhaust temperature.

How to deal with the high exhaust temperature of Gree air-conditioning compressor?

Poor heat dissipation and high heat load. Clean the condenser thoroughly and improve the heat dissipation effect. In addition, check whether the external fan is normal. Are there any obstacles that affect the ventilation of the external machine?

How about Gree high voltage protection?

How about Gree high voltage protection?

Hello! E 1 is the reason, E 1: compressor high pressure protection. If the compressor current is too large and the compressor and exhaust temperature are high, the module should check whether the overload protector is disconnected and the compressor temperature sensor is short-circuited. The troubleshooting method of Gree E 1 first judges whether the air conditioner fails after running for a period of time or when it is turned on, so as to distinguish whether it is a system failure or a circuit failure. The main considerations for the system are: 1 > incomplete evacuation/new installation 2 > excessive injection/maintenance 3 > high temperature of the external machine/poor ventilation? Dirty blockage? Bad environment? Circuit: short circuit the internal machine motherboard ovc and neutral wire. If it continues to fail, the motherboard will be defective/replaced and repaired. If there is no failure, check whether the high voltage switch is turned on. If yes, check the connection between the high voltage switch and ovc. If it fails, repair the high voltage switch. Firstly, it is determined whether the air conditioner fails after running for a period of time or when it is turned on, so as to distinguish between system failure and circuit failure. System considerations: 1 > incomplete emptying/new installation 2 > excessive injection/maintenance 3 > high temperature/poor ventilation of the external machine? Dirty blockage? Bad environment? Circuit: short circuit the internal machine motherboard ovc and neutral wire. If the fault persists, the motherboard will fail/be replaced and repaired. If the fault does not appear, check whether the high voltage switch is turned on. If yes, check the connection between the high voltage switch and ovc. If not, repair the high voltage switch.

How about Gree high voltage protection?

1. Is the fan working normally? If not, check whether the fan is mechanically blocked or whether the starting capacitor fails. 2. Is the system overfilled with fluorine? For example, fluorine is discharged to a normal number. 3. Is the outdoor radiator dirty and blocked? If so, clean it up. 4. Pressure switch failure? Replace pressure switch. 5. Accidentally inhaling air when moving the machine for installation? The freon in the system is completely discharged, and it is charged to a positive constant after vacuum pumping.

How about Gree high voltage protection?

Hello! E 1 is a fault signal. E 1: The high-pressure compressor of the machine ensures that the compressor current is too large, the compression heat and exhaust temperature are high, and the module is protected. Whether the overload protector is disconnected and the compressor temperature sensor is short-circuited. The troubleshooting method of Gree E 1 first judges whether the air conditioner fails after running for a period of time or when it is turned on, so as to distinguish whether it is a system failure or a circuit failure. The main considerations for the system are: 1 > incomplete evacuation/new installation 2 > excessive injection/maintenance 3 > high temperature of the external machine/poor ventilation? Dirty blockage? Bad environment? Circuit aspect: short-circuit ovc and neutral wire of internal machine motherboard. If it continues to fail, the motherboard will be defective/replaced and repaired. If there is no failure, check whether the high voltage switch is turned on. If yes, check the connection between the high voltage switch and ovc. If it fails, repair the high voltage switch. Firstly, it is determined whether the air conditioner fails after running for a period of time or when it is turned on, so as to distinguish between system failure and circuit failure. The main considerations for the system are as follows: Dirty blockage? Bad environment? Circuit: short circuit the internal machine motherboard ovc and neutral wire. If the fault persists, the motherboard will fail/be replaced and repaired. If the fault does not appear, check whether the high voltage switch is turned on. If yes, check the connection between the high voltage switch and ovc. If not, repair the high voltage switch.

What does Gree Air Conditioning mean by displaying FO?

F0 is the misjudgment of fluorine deficiency/blockage protection/system inspection, and the specific fault causes need to be detected and handled by Gree service personnel. Please click here or contact Gree national unified customer service hotline 4008-365-3 15 to make a service reservation.

What does Gree Air Conditioning mean by displaying FO?

There are three F0 symbols of Gree air conditioner.

The faults of 1 and F0 are interpreted as indoor environment sensor obstacles. If it is F0, first check whether it is an environmental sensor fault, which may be loose wires or poor wire contact. Long-term operation of the sensor will accelerate the aging. Check whether there is any fault in the circuit board.

2. F0 will also be displayed if the air conditioner compressor fails. If the compressor breaks down, the air conditioner will stop working.

3. Insufficient refrigerant will reduce the refrigeration efficiency, so the refrigerant should be replenished in time. The fault codes of different air-conditioning models are also slightly different, and specific problems need to be analyzed.

F0 troubleshooting

1, indoor temperature sensor failure.

2. Presumably, it is because the remote controller has started a new defrosting function by misoperation. When the remote control is turned off, press the mode key and the drying key on the remote control at the same time, and the auxiliary heating "key" exits the new defrosting function.

3. If the outdoor temperature is very low, the air conditioner will defrost frequently and the heating will suddenly drop.

4. After the automatic recovery is completed, clean the filter once a month.

Please don't turn off the air conditioner when defrosting. Defrosting is a normal working state of air conditioning in winter.

Extended data:

Gree air-conditioning fault code

E 1 system high voltage protection

E2 internal machine antifreeze protection

E3 system under-voltage protection

E4 compressor exhaust protection

E5 Low Voltage Overcurrent Protection

E6 communication failure

E7 mode conflict

E8 high temperature protection

E9 cold air protection

F 1 Open circuit and short circuit at room temperature

F2 inner tube temperature open circuit, short circuit

F3 outer ring temperature open circuit, short circuit

F4 condenser tube temperature open circuit, short circuit

F5 external exhaust pipe is open and short.

What does Gree Air Conditioning mean by displaying FO?

There are three reasons why the F0 symbol appears in Gree air conditioners.

1 and f0 are interpreted as indoor environmental faults. If it is f0, check whether it is an environmental sensor fault. It may be caused by loose sensor wires or poor line contact. Long-term operation of sensors will accelerate aging. Check the circuit board for faults.

2. If the compressor fails, f0 will also be displayed. If the compressor fails, the air conditioner will stop working.

3. Insufficient refrigerant will reduce the refrigeration efficiency, so the refrigerant should be replenished in time. The fault codes of different air-conditioning models are also slightly different, and specific problems need to be analyzed.

F0 troubleshooting

1, indoor temperature sensor failure.

2. Presumably, it is because the remote controller has started a new defrosting function by misoperation. When the remote control is turned off, press the "mode" key and the "dry" key on the remote control at the same time. Auxiliary heating "key" exits the new defrosting function.

3. If the outdoor temperature is very low, the air conditioner will defrost frequently and the heating will suddenly drop.

4. Automatically recover after completion, and clean the filter screen about once a month.

Please don't turn off the air conditioner when defrosting. Defrosting is a normal working state of air conditioning in winter.

Extended data:

Gree air-conditioning fault code

E 1 system high voltage protection

E2 internal machine antifreeze protection

E3 system under-voltage protection

E4 compressor exhaust protection

E5 Low Voltage Overcurrent Protection

E6 communication failure

E7 mode conflict

E8 high temperature protection

E9 cold air protection

F 1 Open circuit and short circuit at room temperature

F2 inner tube temperature open circuit, short circuit

F3 outer ring temperature open circuit, short circuit

F4 condenser tube temperature open circuit, short circuit

F5 external exhaust pipe is open and short.

What does Gree Air Conditioning mean by displaying FO?

Fault code F0

Fault content, indoor ambient temperature fault

Cause of failure

Sensor pins are loose or touching.

The sensor is damaged and the resistance value is wrong.

The control circuit board is out of order and cannot receive and send control signals.

Gree air conditioner shows H 1, indicating that the air conditioner is defrosting. At this time, don't turn off the air conditioner just because the computer is broken. If the air conditioner is turned off, the frost will not dissolve so quickly, and it will be more difficult to dissolve if the temperature is already very low.

When the air conditioner is running, the outdoor temperature is low and the humidity is high. After the air conditioner is running for a period of time, the heat exchanger of the outdoor unit will frost, which is normal. The air conditioner will automatically turn on the defrosting function. At this time, H 1 will be displayed on the screen, and the air conditioner will resume normal operation after 3-5 minutes.