You may have the problem that Gree air conditioner does not start and displays E3 during the air conditioning process. Today, I will explain to you the following aspects: What should I do if Gree air conditioner displays E3 fault code? , what is the problem of E3 when the air conditioner is turned on and how to solve it? What does it mean when Gree air conditioner displays E3? What is the fault of Gree air conditioner when it displays E3? What is the fault of Gree air conditioner when it displays E3? Let’s take a look at the problem of Gree air conditioner not starting and displaying E3.
What is the fault of Gree air conditioner E3?
E3: low voltage protection. 1. Generally, it is caused by fluorine deficiency. Check whether the low pressure is 4.5 kg. If it is lower, then you need to check for leaks and replenish fluoride. 2. There is another situation, but it is relatively rare, that is, the low-voltage pressure switch fails or the circuit connected to it is disconnected. You can open the cover of the outdoor unit of the air conditioner. There is a copper pipe connected with a bakelite plastic tail. Check whether the two leads are open (make sure there is no lack of fluorine) and see if they are open. If so, you can put them together for emergency use (but remember to replace them, otherwise the compressor may be burned if there is a real lack of fluorine). If the switch is not open, then check the leads and it will usually solve the problem. It is recommended to find professional maintenance personnel to operate.
What is the fault of Gree air conditioner E3?
E3 refrigeration overload protection, the evaporator of the machine is frozen. Reasons: 1. There is more than 60% chance that a rat bites off the sensor wire, especially in public places such as restaurants. 2. The internal machine filter is dirty and clogged, more than half the possibility. 3. The reduction of the electric capacity of the internal fan causes the internal fan speed to be low. 4. The back of the evaporator of the indoor unit is too dirty, causing the evaporator to be unventilated. 5. The sensor resistance drifts. Solution: 1. The on-hook E3 code indicates that there is a problem with the PG motor feedback line. 2. Remove the outer cover of the internal unit and check. Several wires of the internal fan should be broken or not broken. 3. Just disconnect it and reconnect it. If it is broken at the root of the inner fan, then the only option is to replace the inner fan.
What is the fault of Gree air conditioner display E3?
E3 means that the cooling is overloaded, that is, the inner generator is frozen.
Causes:
The possibility of rats chewing off transmission lines is more than 60%, especially in public places such as restaurants.
The possibility of the internal machine filter being dirty and blocked is more than half.
The reduction in the electric capacity of the internal fan causes the internal fan to rotate at a low speed.
The back of the evaporator of the internal unit is too dirty, causing the evaporator to not be ventilated.
Sensor resistance drift.
Solution:
The on-hook E3 code is a problem with the PG motor feedback line.
Remove the outer cover of the internal unit and check the wires of the internal fan. There should be some wires that are broken or not broken.
Just disconnect it and reconnect it. If it is broken at the root of the inner fan, then the only option is to replace the inner fan.
What is the problem and how to solve the problem of E3 when the air conditioner is turned on?
The speed of the indoor unit fan should be out of control.
There are three specific situations:
1. The indoor fan does not rotate, very slowly, or very quickly.
2. The fan motor has no feedback signal output and the motor needs to be replaced.
3. The fan detection circuit of the indoor unit computer board is faulty and the computer board needs to be replaced.
How to troubleshoot E3:
1. Check whether the wind wheel assembly is loose or stuck; if so, make adjustments.
2. Check whether the wiring of the indoor electronically controlled fan is secure; if there is any problem, adjust it.
Extended information
Common malfunctions of air conditioners
Dirty blockage and ice blockage in the refrigeration system; clogged air filter; air inlet and outlet blocked by obstacles wait. The windings of the motor, fan motor windings, solenoid valve coils, relay coils and contacts were burned. The fan is stuck, the bearings of moving parts are stuck, etc.
In order to accurately determine the nature and location of the fault, instruments and meters are often used to check and measure the performance parameters and status of the air conditioner.
For example, use a leak detector to check whether there is refrigerant leakage; use a multimeter to measure whether the power supply voltage, the current to ground of each terminal and the operating current meet the requirements. For air conditioners controlled by a computer, you should also measure whether the potential of each control point is normal, etc.
What is the problem and how to solve the problem of E3 when the air conditioner is turned on?
E3 is a pressure protection. 1. Focus on checking whether the refrigerant is missing and whether the pressure switch is damaged. 2. It may also be that the radiator and filter of the indoor and outdoor units are too dirty. 3. It is also possible that the circuit board-related circuits are damaged. Solution: 1. Add refrigerant. 2. Clean the filter. 3. Replace the circuit board.
What is the problem when the air conditioner is turned on and E3 is displayed? How to solve it
It is Gree's hang-up.
If the internal indicator light of Gree air conditioner goes out 3D and flashes 3 times during the process, and then an E3 code is provided on the display, it means that the system has entered the low-voltage protection program. Generally, it is caused by fluorine deficiency, or it may be The expansion valve is clogged, the solenoid valve is faulty, and other problems.
If the machine prompts an E3 error, you need to analyze the following issues. The first step is to determine whether the ambient temperature is too low. The second step is to determine whether it is a control failure or a system failure. The third step is to determine whether the indoor temperature is too low. , whether the outdoor unit connecting wires and plugs are loose, etc. The fourth step is to use the pressure gauge to determine whether there is leakage of fluorine or the refrigerant is blocked.
The simplest solution is to notify Gree’s after-sales service department for on-site inspection. Especially for Gree air conditioners that are still under warranty, the charge for on-site inspection is very low. If it is a fault with the machine itself, , then the replacement of internal parts or repairs are free of charge, and the warranty period of new parts is recalculated from the time of replacement.
What is the problem when the air conditioner is turned on and E3 is displayed? How to solve it
Midea air conditioner shows that E3 is the fan speed out of control. E series cabinet machine. E3 undercurrent protection. Tannoy machine. E3 is a temperature sensor. If the controller is not variable frequency, E3 indicates that the speed of the internal fan is out of control. If it is variable frequency, the full DC digital variable frequency (25, 32BP2Y) displays E3: high and low voltage protection. R type S type V type AC inverter series U type V type E series M series N series W series full DC inverter series shows E3 as the internal unit fan speed is out of control, C series full DC inverter hang-up shows E3 as a zero-crossing detection error, if it is The fault of cabinet E3 is caused by T3 sensor failure, that is, the temperature sensor of the outdoor unit is faulty. Check whether the sensor is faulty and whether the connection line between the sensor and the main board of the internal unit is disconnected.
What is the problem and how to solve the problem of E3 when the air conditioner is turned on?
E3 is a pressure protection. You can use these methods to solve the problem. If it doesn't work, you can contact customer service. Add refrigerant. Clean the filter. Replace the circuit board.
What does Gree air conditioner display E3 mean?
Cause of failure: System low voltage protection.
1. Insufficient refrigerant (fluorine leakage in the system)
2. The expansion valve is half blocked and the solenoid valve is faulty.
3. The filter is half blocked.
4. The main board or display board is faulty. E. The indoor and outdoor unit connections and plug connectors are in poor contact. F. The low-voltage protection switch is broken.
Solution:
1. Determine whether the ambient temperature is too low.
2. To determine whether it is a control fault or a system fault. A. You can first short-circuit the LPP plug on the main control board and the neutral line N on the main board. If the indoor unit is running normally, it can be determined that there is no problem with the indoor unit mainboard or display board. The fault occurs in the indoor and outdoor unit connecting wires, plug connectors or the outdoor unit low-voltage switch. It is recommended to find professional maintenance personnel to operate.
3. Determine the indoor and outdoor unit connection lines and plugs A. Set the multimeter on the ohm block, connect one test lead to the unplugged LPP protection line on the motherboard, and connect the other test lead to the neutral 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. It is recommended to find professional maintenance personnel to operate.
Extended information
Notes:
1. The power supply voltage cannot fluctuate too much (±10% fluctuation is allowed), and the air conditioner should be powered by a dedicated line. Use a single-phase three-hole socket, and insert the plug all the way.
2. The casing of the indoor unit must be cleaned frequently. Generally, it can be wiped clean with a clean dry cloth or wiped with a neutral detergent. It is absolutely not allowed to rinse directly with water. If you use a cloth to wipe it, you must also clean it. Do this after a power outage.
3. The indoor temperature cannot be adjusted too low, otherwise it will be harmful to the human body. The set temperature should be adjusted appropriately.
4. If you feel that the indoor temperature is too high, you can appropriately lower the set temperature.
5. Effective use of timers can achieve both energy saving and comfort.
What does the E3 display on Gree air conditioner mean?
The E3 display is low voltage protection. Generally, it is caused by low voltage. Just check whether the low voltage is 4.5 kg. If it is low, then it is It is necessary to check for leaks and replenish fluoride. Another reason is low pressure caused by the outdoor fan not rotating.
Extended information:
Solution:
1. The on-hook E3 code indicates that there is a problem with the PG motor feedback line.
2. Remove the outer cover of the internal unit and check the wires of the internal fan. There should be some wires broken or not broken.
3. If it is broken and reconnected, it will be fine. If it is broken at the root of the inner fan, then the only option is to replace the inner fan.
What does Gree air conditioner display E3 mean?
E1 compressor overflow, exhaust temperature is too high, module protection E2 overprotection (indoor pipe temperature sensor abnormality or refrigeration system failure) E3 indoor temperature sensor is open or short circuited. E4 outdoor temperature sensor is open or short circuited. E5 Indoor and outdoor communication failure. (The power supply is zero and the live wire cannot be connected reversely)
What should I do if the Gree air conditioner displays the E3 fault code?
1. Measures:
(1) The simplest solution is to notify Gree’s after-sales service department for on-site inspection.
(2) Self-test to check whether the refrigerant power is sufficient. If it is not enough, more refrigerant needs to be added.
(3) Check the pressure switch and the circuit of the pressure switch, and test whether the low-pressure pressure switch is connected.
(4) Finally, pull out the wire and test whether there is 220V power.
2. Reasons:
(1) E3 is displayed because the indoor temperature sensor is open or short-circuited.
(2) If the indoor unit indicator light goes out 3D and flashes 3 times during operation of the Gree air conditioner, and then an E3 code is provided on the display, it means that the system has entered the low-voltage protection program.
(3) It may also be caused by fluorine deficiency.
(4) It may also be caused by expansion valve blockage, solenoid valve failure and other problems.
Extended information:
Gree air conditioner fault code:
1.E1 system high pressure protection
2.E2 indoor unit antifreeze protection< /p>
3.E3 system low voltage protection
4.E4 compressor exhaust protection
5.E5 low voltage overcurrent protection
6 .E6 communication failure
7.E7 mode conflict
8.E8 high temperature protection
9.E9 cold wind protection
10 .F1 Open at room temperature, short circuit
11.F2 Open at inner tube temperature, short circuit
12.F3 Open at outer ring temperature, short circuit
13.F4 condenser The pipe temperature is open and short circuited
15.F5 The external exhaust pipe is warmed and short circuited
16.H1 defrost
17.H2 electrostatic dust removal protection
p>18.H3 compressor overload protection
19.H4 system abnormality
20.H5 module protection Gree air conditioner maintenance
21.FC sliding Door failure
Baidu Encyclopedia - Gree air conditioner fault code
What should I do if Gree air conditioner displays E3 fault code?
E3 is system low voltage protection. The low-voltage switch signal will be detected 3 minutes after the pressure is started. If the low-voltage switch is detected to be disconnected for 3 consecutive minutes, it will stop, the indicator light will flash and the fault code E3 will be displayed to indicate fluorine leakage.
The solution is to notify Gree’s after-sales service department for on-site inspection, especially for Gree air conditioners that are still under warranty. The charge for on-site inspection is very low. If it is a fault with the machine itself, then replace it Internal parts or repairs are performed free of charge, and the warranty period for new parts is restarted from the time of replacement.
These malfunctions of the air conditioner will cause the malfunction of the air conditioning and refrigeration system. Such malfunctions are caused by one part being damaged and multiple parts not functioning. Therefore, it is very troublesome if the refrigeration system of the air conditioner fails, and there will be difficulties in confirming the fault point.
Extended information
Causes of E3 failure:
1. The power supply voltage is too low and the symmetry of the three-phase voltage is poor;
2. The compressor motor runs at low speed for an extended period of time;
3. The compressor motor runs at low voltage and load for a long time;
4. The cooling medium path of the compressor motor is blocked;
5. The operating environment temperature is too high.
What should I do if Gree air conditioner displays E3 fault code?
Gree air conditioner code E3 is: Compression pressure protection failure. Do you want the refrigeration pressure to be sufficient?
Gree air conditioner maintenance:
1. Gree air conditioner shows that E3 is low pressure protection. First check whether the refrigerant pressure is enough (0.4-0.5MPA in operating state). If the pressure is enough Then check the pressure switch and the circuit of the pressure switch, and test whether the low-voltage pressure switch is connected. If it is connected, pull out the wire and check whether there is 220V power. If not, check the circuit. If there is no problem with the above, replace it. Got it.
2. The resistance of the sensor on the Gree fixed-frequency machine is relatively small, which means it is more accurate, but it is also the most susceptible to damage!
Common faults include
1. The press stops for about 20 minutes during cooling;
2. The heating external fan does not work;
3. It is most likely a problem with the indoor pipe temperature! [Applicable to all fixed frequency machines]
3. Ordinary split machines
Some machines with E3 faults do not have low-voltage protection switches at all, but replacing all the control components still cannot solve the problem. It turns out that many control boards nowadays are universal. Just short-circuit the LPP line on the control board and the neutral line!
Extended information:
Gree air conditioner fault codes and maintenance methods 1.?E1 protection: system high-voltage protection
When high-voltage protection is detected for 3 consecutive seconds, close For other loads except the light box, all buttons and remote control signals are blocked, the indicator light flashes and the fault code E1 is displayed.
2.?E2 protection: indoor anti-freeze protection
In refrigeration, In the dehumidification mode, the compressor is started for 6 minutes, and the T steam is detected at 6°C for 3 consecutive minutes. When the compressor has been stopped for 3 minutes, the indicator light goes out, the LCD resumes display, and the machine runs in its original state. Keystrokes are not blocked.
3. E3 protection: system low pressure protection
The compressor starts to detect the low-pressure switch signal 3 minutes after starting. If the low-pressure switch is detected to be disconnected for 3 consecutive minutes, the whole machine will stop and the indicator will The light flashes and displays fault code E3 to indicate fluorine leakage.
4.?E4 protection: exhaust pipe high temperature protection
After the compressor is started, it is detected that the exhaust temperature is higher than 120°C for 30 seconds or the exhaust temperature sensor head is short-circuited (or When open circuit), the indicator light flashes and fault code E4 is displayed.
5. E5 protection: low voltage protection
After the compressor is running, if the current exceeds 25A for 3 consecutive seconds, the indicator light flashes and the fault code E5 is displayed.
6.?EH protection: Electric heating failure
A "BB" alarm sounds and the red light flashes. When the ambient temperature is >35°C, refrigeration is forced. The causes of the failure are as follows:
1) The AC contactor is stuck internally and the AC contactor must be replaced.
2) The fuse is not working properly and must be replaced.
Baidu Encyclopedia - Gree air conditioner fault code
What is the fault of Gree air conditioner showing E3?
The code E3 displayed on Gree cabinet machine is: compressor low pressure protection.
The E3 fault is: low pressure protection
1. The situation is caused by lack of fluorine. Just check whether the low pressure is at 4.5 kg. If it is lower, then you need to check for leaks. , fluoride supplementation.
2. There is another situation, but it is relatively rare, that is, the low-voltage pressure switch fails or the circuit connected to it is disconnected. You can open the cover of the outdoor unit of the air conditioner and there is a copper pipe connected to it. Measure something with a bakelite plastic tail and two leads (to confirm that there is no lack of fluorine) to see if it is open. If it is open, you can put it together for emergency use (but remember to replace it, otherwise it is really lacking of fluorine, but If the compressor is burning), if the switch is not open, then check the leads and it will usually solve the problem. It is recommended to find professional maintenance personnel to operate.
Extended information:
Gree Group was established in March 1985, formerly known as the Special Economic Zone Industrial Development Corporation. In 2009, it completed the corporate restructuring and changed its name to "Zhuhai Gree Group Co., Ltd." , the company has a registered capital of 800 million yuan.
Zhuhai Gree Electric Appliances Co., Ltd., established in 1991, is a professional air-conditioning enterprise integrating R&D, production, sales and service. In 2012, it achieved total operating income of 100.11 billion yuan, a year-on-year increase of 19.87%; net profit was 7.380 billion yuan, a year-on-year increase of 40.92%, becoming a professional home appliance enterprise that has achieved 100 billion yuan.
Independently developed ultra-low temperature digital multi-split units, high-efficiency DC variable frequency centrifugal chillers, multi-functional floor heating household central air conditioners, 1 Hz variable frequency air conditioners, R290 environmentally friendly refrigerant air conditioners, ultra-efficient fixed-speed compressors, etc. A series of "internationally leading" products fill the gaps in the industry. Good air conditioner, made by Gree.
Gree Air Conditioner Baidu Encyclopedia
What is the fault of Gree Air Conditioner showing E3?
What is the fault of Gree Air Conditioner showing E3:
1. Entering low pressure Protection procedures are generally caused by a lack of fluoride.
2. It may also be caused by expansion valve blockage, solenoid valve failure and other problems.
1. Error problem analysis
If the machine prompts an E3 error, then the following issues need to be analyzed. The first step is to determine whether the ambient temperature is too low. The second step is to determine whether the ambient temperature is too low. Whether it is a control failure or a system failure, the third step is to determine whether the connecting wires and plugs of the indoor and outdoor units are loose. The fourth step is to use the pressure gauge to determine whether there is fluorine leakage or the refrigerant is blocked.
2. How to solve the error
The simplest solution is to notify Gree’s after-sales service department for on-site inspection, especially for Gree air conditioners that are still within the warranty period. The charges are very low. If the fault is caused by the machine itself, replacement of internal parts or repairs are free of charge, and the warranty period of new parts is recalculated from the time of replacement.
If you want to troubleshoot the problem at home first, you need to self-test to see if the refrigerant pressure is enough. If it is enough, then check the pressure switch and the circuit of the pressure switch, and test whether the low-pressure pressure switch is connected. If Once the connection is clear, pull out the wire and check whether there is 220V power. If there is no problem with the above inspection steps, you must contact the after-sales department to come to your home.
What is the E3 fault on Gree air conditioner?
The E3 fault is: the system low pressure guarantees that the compressor starts to detect the low-pressure switch signal for 3 minutes after starting. If the low-pressure switch is disconnected for 3 minutes continuously, the whole machine Stop, the indicator light flashes and the fault code E3 is displayed to indicate fluorine leakage.
Cause of failure:
1. Insufficient refrigerant.
2. The expansion valve is half blocked and the solenoid valve is faulty.
3. The filter is half blocked.
:
Gree air conditioner fault code
E1? System high pressure protection
E2? Indoor unit antifreeze protection
E3? System low voltage protection
E4? Compressor exhaust protection
E5? Low voltage overcurrent protection
E6? Communication failure
< p> E7? Mode conflictE8? Protection against high temperature
E9? Protection against cold wind
F1? Open at room temperature, short circuit
F2? The inner tube is warm and open, short circuit
F3? The outer ring is warm and open, short circuit
F4? The condenser tube is warm and short circuit
F5? External exhaust The air pipe is open and short circuit
H1? Defrost
H2? Electrostatic dust removal protection
H3? Compressor overload protection
H4 ? System abnormality
H5? Module protection Gree air conditioner repair
FC sliding door failure