Air conditioner compressor does not start maintenance method

- Apr 29, 2020-

1. The wooden hammer percussion method of air conditioning compressor does not start maintenance:

Tilt the front, back, left and right of the air conditioner by 45 °, and then turn on the machine, and knock the lower part of the air conditioner compressor with a wooden hammer to make the internal parts of the air conditioner compressor vibrate and operate. The newly installed air conditioner has a failure of the air conditioner compressor not to start, and the air conditioner may be placed for a long time, so that the piston assembly is still in a state for a long time. In addition, the thick viscosity of frozen oil in winter is also a reason, the use of wooden hammer knocking method can eliminate the fault.

2. Air pressure impact method for air conditioner compressor not starting maintenance:

Measure the socket voltage is normal, disassemble the outdoor unit casing, measure the compressor capacitor charge and discharge is good, measure the overheat and overcurrent protector is good, measure the air conditioning compressor main winding plus secondary winding resistance is equal to the common terminal value. The above four methods did not work, and then the air pressure shock method was used. First, the refrigerant needs to be released, and the high-pressure and low-pressure pipes of the air-conditioning compressor are welded away by gas welding, and a 1.5-meter-long 10mm-diameter copper pipe is welded to the high-pressure air outlet pipe of the air-conditioning compressor. The other end is connected to the decompression outlet of the nitrogen bottle with a nanotube. Nitrogen is used to give a 0.1 MPa reaction force to the air conditioner compressor parts, which loosens the shaft holding parts. Exhale air for 5 minutes with a low-pressure suction port, and then test the machine with a forced lift method. The air conditioner compressor is easy to start running. After the air conditioner compressor runs normally, the measured current is 4.3 amperes, and then the high pressure and low pressure pipes are welded, repressed, leak checked, evacuated, fluorided, and the air conditioner compressor returns to normal.

3. Pressure relief method for air conditioner compressor not starting maintenance:

The resistance of the winding of the air-conditioning compressor is normal. The air-conditioning compressor still cannot be operated by the above three methods. After that, the refrigerant is discharged from the low-pressure gas container of the outdoor unit, and then the lower half of the air-conditioning compressor is knocked at the same time when the power is turned on, and the air-conditioning compressor runs quickly. At this time, 200ml of freezing oil can be sucked from the low-pressure gas fluoride. After the air conditioner compressor is operating normally, the low-pressure gas can be cut in and the low-pressure liquid can be cut in. Then press, leak test, evacuate, add fluorine, air conditioner The compressor returns to normal.

4. The strong method of air-conditioning compressor does not start maintenance:

Use a 220v10a plug. Three wires with a length of 1.5 meters and a cross-section of 1.5 square millimeters are used to make a starting tool. The N terminal wire of the plug is connected to the common terminal C of the air conditioner compressor, the L terminal of the plug is a polar wire, one is surrounded by the M terminal of the air conditioner compressor, and the other The line is suspended. When the air conditioner compressor is energized, it is empty. This line lightly touches the start terminal S of the compressor, and the air conditioner compressor starts. After the air conditioner compressor is started, quickly remove the line touched, pay attention to safety. When the operation is stopped, dial the power plug first, then disconnect the wire, and then connect the air conditioner compressor wire. The test machine air conditioner returned to normal.

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