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Q Check whether the compressor has process defects
A Generally, for new unit equipment and newly replaced compressors, check the compressor electricity and whether there are process defects, and carry out unit equipment debugging in advance. Otherwise, the unit will malfunction soon after use.
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Q It is forbidden to use the compressor to vacuum
A Air has certain insulating properties. If the compressor is evacuated, it will cause the electrode in the closed container to prevent electricity and cause the compressor to malfunction.
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Q Give the compressor enough cooling time.
A After a period of operation of the compressor, the body heats up. After the unit stops running, the compressor will slowly stop operating. If the unit and the compressor are started quickly, the compressor motor coil will not be properly cooled and the unit will operate again. The return air temperature of the compressor interacts with the exhaust temperature, which will cause certain damage to the compressor.
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Q Clean the metal shavings in the winding in time.
A During the operation of the air-conditioning unit, some fine metal shavings will be generated, and the metal shavings will remain in the windings. When the compressor starts, the windings oscillate slightly under the influence of electromagnetic force, and the metal shavings in between will cause friction between the movements of the two, which will cut the insulation layer of the circuit envelope and cause the circuit to short circuit, which affects the motor and other units. The normal operation of the device.
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Q Clean up the refrigeration system in time
A If the compressor is burned and not treated in time, the strong acid generated by the damaged compressor system will have an effect in the system. The residual strong acid will corrode the new compressor, destroy the motor insulation layer, and continue to burn the new compressor And air conditioning system. Therefore, if the compressor is burned out, it is necessary to thoroughly clean the refrigeration system before replacing it with a new compressor instead of directly replacing it.
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Q Check whether the compressor contactor is faulty.
A Compressor's starting contactor malfunctions, which may cause excessive resistance, excessive starting current, or poor line contact, etc., which will affect the compressor, and short circuit will burn the compressor.
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Q Pay attention to the jamming of the rotating parts of the compressor.
A In general, if the thermal protector of the unit fails or the suction and exhaust valves are not closed tightly, it may cause the compressor to jam. In this case, immediately check whether the power circuit is normal, whether the compressor is short of oil, and whether the suction and exhaust are normal, etc. , Respond in time, the motor protection failure will cause the compressor to burn out due to overload.
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Q It is forbidden to start the compressor frequently.
A Frequent start-up of air-conditioning units and excessively high compressor start frequency will cause the compressor temperature to rise and fall, and the compressor system is prone to fatigue damage. Although the air conditioning unit is equipped with a step-down start, the current at the start will exceed the rated current. The operating temperature of the compressor under excessively high current start rises quickly. If the temperature of the air conditioning unit is set to be too high or too low, it will cause the compressor to switch on and off frequently. If this happens, the service life of the compressor will be greatly reduced. The compressor can be said to be the heart of the swimming pool heat pump dehumidification unit. Once the heart is damaged, the life of the unit will not be long.
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Q Clear the moisture in the copper pipe of the air conditioner.
A The water contained in the copper pipe of the air conditioner is not cleaned. If the water remains in the copper pipe system, it will lead to poor insulation of the compressor. The system refrigerant refrigerating oil is mixed with water, which produces acidic properties under the interaction of high temperature and low temperature, and the motor insulation layer will be corroded and damaged. The motor will burn out after a long time.
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Q Ensure the stability of current and voltage during the operation of the unit.
A The operation of the unit is mainly driven by the compressor. If the current and voltage in the operating procedures are unstable, high or low, it will affect the compressor. If the compressor runs under the condition of excessive voltage for a long time, the compressor will be in an inefficient and overheated state. Can not effectively prevent the current from passing, and the motor windings are easily burned out. In addition, the unstable current will also increase the energy consumption of the motor, resulting in excessively high temperature of the compressor coil and easily burned out.
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Q Causes and solutions for non-operating fan and frost on the evaporator
A The reasons for the fan not rotating and the evaporator frosting are as follows: 1. Bad coil sensor; 2. Bad fan capacitance; 3. Bad motor.
The troubleshooting methods are as follows: 1. Judge by querying parameters (replace the coil sensor); 2. Replace the fan capacitor; 3. Replace the motor.
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Q Causes and solutions for high voltage failures
A The reasons for the high pressure failure are as follows: ⒈The water tank temperature sensor is not placed correctly, which leads to accurate temperature detection; ⒉The water tank sensor is bad; ⒊The high pressure switch is broken; ⒋The system is blocked; 5. The stop valve is not opened or not fully opened.
The troubleshooting methods are as follows: ⒈Detect the actual temperature of the water tank, if the detected temperature is higher than the displayed temperature, the sensor needs to be replaced; 2. Replace the water tank sensor; 3. If the pressure is normal, the pressure switch is broken, replace the pressure switch; 4. Check the high pressure of the system If the pressure is too high, the throttling element is blocked, and the system is cleaned; 5. Fully open the shut-off valve.
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Q Causes and solutions for the failure of excessive exhaust
A There are three reasons for the failure of excessive exhaust gas: ⒈ fluorine leakage and lack of fluorine in the system; ⒉ blockage in the system; ⒊ bad exhaust sensor.
The troubleshooting methods are as follows: ⒈Check the actual discharge temperature of the compressor and the high pressure of the system. The discharge temperature will be high, low pressure will not necessarily be low, high pressure will be low, use foam check points to make up leaks and fluoride; ⒉ use nitrogen to clean the system , Replace the throttling element, add a detachable filter before the throttling element; ⒊ Replace the exhaust temperature sensor when the temperature is normal.
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Q Causes and solutions for the failure of the water flow switch
A The cause of the failure of the water flow switch is either a problem with the parameter setting or the water flow port is not short-circuited.
The troubleshooting methods are as follows: 1 reset the parameters and short-circuit the water flow port.
