The air conditioner will show E3 after 2 minutes, and what should I do if I turn it off

- Is the air conditioner malfunctioning? With my 8 years of experience in repairing air conditioners, I will tell you how to solve these faults, which should save you a lot of detours.

When encountering a failure of the air conditioner, we must strictly follow the scientific procedures, and do not act blindly and disassemble at will when the situation is unclear, the fault is unclear, and there are countless in the heart. The consequence of this often amplifies existing faults, increases operating costs, shortens the normal service life of equipment, and leads to early scrapping of equipment.

The air conditioner is not refrigerated or does not refrigerate.

This problem is most common, and the lack of fluorine in air conditioners is the key.

When the machine is turned on, first touch the trachea and judge it by the temperature.

If it is cold, the speed of the fan may be low.

The inner tube scales and dust are cleaned or replaced.

If the inner tube is not considered cool, the thick tube may be flattened.

The return air temperature is not cool, and then touch the intake air to judge.

The air intake is cold and frosty, and fluoride is added to try again.

If the frost slowly disperses, it is a good decision to lack fluoride.

It is not difficult to see the aging of the press, and the lack of exhaust is the key.

Four-way gas is also commonly judged by fluoride collection.

High-pressure scales must be seen to be dirty, and they will be slow to refrigerate.

- Finally, I wish the work to go well, fix the air conditioner earlier, live a happy life——— please give an answer if you think it is good, give a good review, and wish you a better life———

Could it be that the room temperature has reached the set temperature?

Causes and solutions of air conditioner E3 failure: E3 error refers to abnormal high pressure pressure. This is mainly due to the abnormally high pressure of the outdoor unit.

Remedies for this differ when cooling and heating are used. If you get an E3 error** when using the air conditioner, first check the heat exchanger of the outdoor unit. It is a heat exchanger that is often located on the back of the outdoor unit, but if dust accumulates here, the heat does not cool down well and the internal temperature rises, resulting in abnormal pressure.

1.Dirt on the aircon internal filter If you receive an E3 error** when using heating, it is most likely due to dirt on the aircon internal filter. Please open the lid of the air conditioner and check the filter.

If dirt builds, wash it off with water or remove it with a specialist cleaner. 2.Power Break Try to turn off the power circuit breaker of the air conditioner, wait for about 30 seconds, if you can confirm that it does not respond even if you press the remote control operation button that is the target of the fault, turn on the circuit breaker again and check if it can be operated.

3.Leakage of air conditioning refrigeration pipes, cracking and leakage of screws, or long-term vibration and friction due to the quality of the air conditioner itself, resulting in perforation of pipeline parts and leakage of refrigerant. Replenish the refrigerant or replace the refrigeration pipes.

4.The circuit is damaged and the microcomputer control system of the air conditioner is the nerve center of the air conditioner, and once it fails, the whole air conditioner will be paralyzed. Therefore, it is necessary to ask a professional technician to check the repair.

Summary. The air conditioner will be turned on for a while to show what is the reason for E3: 1. The set temperature and indoor and outdoor ambient temperature are too low, and the air volume is too low, and the air conditioner is normally protected (the temperature will be lifted after the temperature rises); 2. Lack of fluorine, check whether the thin pipe of the air conditioner and the indoor heat exchanger are frosted, if there is frost, it is because of the lack of fluorine, and it is necessary to find after-sales leakage detection and fluoride; 3. The filter screen or indoor heat exchanger is dirty, resulting in low air volume, and the system cannot exchange heat in time, resulting in low temperature of the indoor coil, just clean the filter screen or indoor heat exchanger; 4. The failure of the fan and related circuits causes the air volume to be low, and the system cannot exchange heat in time, resulting in the temperature of the indoor coil being too low, so find after-sales maintenance.

I'm sorry I don't understand, but can you elaborate on that?

The air conditioner will be turned on for a while to show what is the reason for E3: dry 1, the set temperature and indoor and outdoor ambient temperature are too low, and the air volume is too low, and the air conditioner is normally protected (the temperature will be lifted after the temperature rises); 2. Lack of fluorine, check whether the thin pipe of the air conditioner and the indoor heat exchanger are frosted, if there is frost, it is because of the lack of fluorine, and it is necessary to find after-sales leakage detection and fluoride; 3. The filter screen or indoor heat exchanger is dirty and blocked, resulting in low air volume, and the temperature of the indoor coil is too low due to the timely heat exchange method of the system without cracking, so it is good to clear the filter screen or indoor heat exchanger; 4. The failure of the fan and related circuits causes the air volume to be low, and the system cannot exchange heat in time, resulting in the temperature of the indoor coil being too low, so find after-sales maintenance.

1. If the set temperature and indoor and outdoor ambient temperature are too low, and the air volume is too low, the air conditioner will be protected normally (the temperature will be lifted after the temperature rises); 2. Lack of fluorine, check whether the thin pipe of the air conditioner and the indoor heat exchanger are frosted, if there is frost, it is because of the lack of fluorine, and it is necessary to find after-sales leakage detection and fluoride; 3. The filter screen or indoor heat exchanger is dirty and blocked, resulting in low air volume, and the temperature of the indoor coil is too low due to the timely heat exchange of the system without the Huai staring method, so it is good to clear the filter screen or indoor heat exchanger; 4. The failure of the fan and related circuits causes the air volume to be low, and the system cannot lead the sail and heat exchange in time, resulting in the temperature of the indoor coil being too low, and the after-sales maintenance is found.

E3 means compressor low pressure protection.

Causes and how to fix them:

1. Determine whether the ambient temperature is too low before the collapse.

2. To determine whether it is a control fault or a system fault, 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 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 ohm 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 of the shirt pin 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.

What to do if the air conditioner shows that the dust is full.

The main purpose of "dusty" is to remind users to clean the filter. Many people do not pay attention to the bending cleaning filter, and even do not know the consequences of not cleaning the filter for a long time: first of all, it may affect the operation and refrigeration effect of the air conditioner, resulting in a reduction in air volume, poor refrigeration effect, and then affect the service life of the air conditioner, and secondly, the air inhaled by the air conditioner when working contains a certain amount of dust, mites, viruses and other harmful substances, some of them adhere to the filter screen, and if the filter is not cleaned for a long time, such bacteria and fungi will breed inside the air conditioner, resulting in mildew and even odor. It pollutes the indoor air-conditioning environment and affects the health of the family.

1. First of all, the power supply is cut off.

2. Disassemble the lower part of the cabinet machine; If it is hang-up, there are two hidden handles (grooves) on both sides of the indoor unit, and you can lift the panel outward with a little force with both hands. If it is a cabinet machine, there are two plastic decorative caps on the plastic fence of the air inlet panel at the lower part of the machine, and the fixing bolts will be exposed when the decorative caps are removed, as long as the fixing bolts are removed.

3. Attention! It is said that the air inlet filters are made of nanomaterials, so it is necessary to clean them properly, and use a soft brush to brush and shoot along the lines, and it is best not to wash with water.

4. Find the screw position or some of them are through a card position to strengthen the shell, and you can see the dust filter after disassembling the shell; Remove it, wash it with water, dry it and put it back on.

In addition to the normal operation of the air conditioner, there are fault signs and reminder signs, E3 is a suggestive sign, the so-called suggestive sign, it is to remind everyone that the current use of the air conditioner is not very good, we should pay attention to their own use behavior, or voltage, current and other problems, this situation should be extra careful. The fault mark means that there is a problem inside the air conditioner, which has affected the normal use of the air conditioner, so you need to find after-sales personnel to repair it in time.

Hello dear, cause analysis: E3** means low-voltage protection, so the fault can be locked as the fault of the outdoor mechanism cooling system. Turn on the machine to observe whether there is frost on the high-pressure pipe of the outdoor unit, and the frost proves that the snow type of the machine is insufficient.

Then insist on whether there is a possibility of leakage, open the low-pressure pipe valve and use a pressure gauge to measure the pressure value, the pressure value is too low to prove that the refrigerant is missing, and it proves that there is a leakage, and it is necessary to check the leakage point and deal with it before adding the refrigerant, otherwise it will be missed sooner or later. E3 Fault SolutionThe method of checking the refrigerant leakage of the air conditioner can be used to detect the leakage of the interface of the copper pipe inside and outside the room with soapy water, usually the refrigerant leakage in these parts. If there is no leakage after inspection, open the outdoor casing to check whether there are oil stains at the bottom of the casing, if there is a leak in this place, check whether the oil stains at the capillary are obvious, and if the capillary is rubbed against the chassis, it is the place that causes the refrigerant to leak.

After re-welding with oxygen welding, re-vacuum and refrigeant, the fault can be eliminated.