Although the precision air conditioner has many advantages such as simple operation and convenient maintenance, in order to ensure the normal operation and service life of the air conditioner room, it is very necessary for the customer to understand the common fault repair methods of the precision air conditioner. So what are the faults in precision air conditioning ? The following decoration home decoration network Xiaobian will bring you the common fault repair methods for precision air conditioners, for your reference.
What are the common faults of precision air conditioners?
Precision air conditioning failure 1, the unit does not start:
(1) The unit is not connected to the power supply: check the input power of the equipment, and the wiring is secure;
(2) Power phase sequence connection error: Check the power phase sequence and wiring.
Precision air conditioning failure 2, air duct failure alarm:
(1) Improper adjustment of the air channel differential pressure gauge: re-adjust the differential pressure gauge;
(2) The filter is clogged and the airflow is short-circuited: the air filter is replaced to remove obstacles;
(3) Fan reversal, lack of phase: check the power phase sequence and wiring;
(4) Fan failure: measure the three-phase static resistance of the fan motor, should be the same, the grounding resistance should be above 5 megohms; if the coil is burned, the fan should be replaced;
(5) There is a blockage in the detection tube of the air channel differential pressure gauge: the differential pressure gauge is removed to detect the foreign matter in the tube.
Precision air conditioning failure 3, high voltage protection alarm:
(1) High voltage protection switch failure: replace the high voltage protection switch;
(2) The expansion valve is adjusted too loosely: the opening of the expansion valve is properly adjusted;
(3) The expansion valve is faulty or the temperature sensor package is installed incorrectly: replace the expansion valve and correctly install the temperature sensor package position;
(4) Excessive refrigerant in summer: Excluding excess refrigerant, control high pressure between 1.5 and 1.8 Mpa;
(5) Dirty plugging of the outdoor condenser: cleaning the surface dust and dirt of the condenser;
(6) The axial flow fan does not rotate: check the static resistance value and grounding resistance of the axial flow fan, if the coil is burned, the fan should be replaced;
(7) Non-condensable gas is mixed into the system: some gas is discharged from the high point of the system, and if necessary, the system is vacuumed and filled with fluorine.
Precision air conditioning fault 4, low voltage protection alarm:
(1) Low voltage protection switch failure: replace the low voltage protection switch;
(2) The opening degree of the expansion valve is too small: the opening degree of the expansion valve is appropriately adjusted;
(3) The expansion valve is faulty or the temperature sensor package is installed incorrectly: replace the expansion valve and correctly install the temperature sensor package position;
(4) Insufficient refrigerant in the system: filling the refrigerant, controlling the low pressure between 0.4 and 0.5 Mpa ;
(5) clogging of the drying filter: replacing the drying filter;
(6) Evaporator frosting: defrosting the evaporator;
(7) fouling on the surface of the evaporator: cleaning the evaporation surface of the evaporator;
(8) The air volume is too small: check whether the air filter and the return air line are blocked;
(9) The low-voltage protection delay setting is incorrect: reset the low-voltage delay time.
Precision air conditioning failure 5, compressor overload:
(1) Excessive heat load: check the insulation and sealing of the air-conditioned room, and increase the equipment if necessary;
(2) Excessive refrigerant in the system: release excess refrigerant in the system;
(3) The compressor itself is faulty: the compressor has a shaft, and the motor coil has a problem in insulation, and the compressor must be replaced;
(4) Power supply voltage value: Eliminate the instability of the power supply voltage;
(5) Loose compressor wiring: Retighten the compressor wiring.
Precision air conditioning failure 6, fan overload:
(1) The airflow is too large: check the installation of the filter, and choose whether the windshield is wrong;
(2) The voltage is too low: check the input power;
(3) Fan motor winding fault: Check if the motor winding is normal.
Precision air conditioning failure 7, humidification fault alarm:
(1) The humidifier has no current: check the power supply wiring, and the phase sequence is correct;
(2) Excessive humidification current: Check if the water supply hardness is too large, check if the humidification tank is too dirty and need to be replaced;
(3) The humidification current is too small: check whether the conductivity of the water supply is too small. If it is too small, add salt to increase the ion concentration.
(4) Dehumidifier lack of water: Check whether the tap water tap is open, check whether the inlet solenoid valve is loose, and whether the solenoid valve is damaged;
(5) The humidifier is not drained: Check if the drain solenoid valve wiring is loose and the solenoid valve is damaged.
Precision air conditioning failure 8, electric heating overheat alarm
(1) dirty air filter: replace the air filter;
(2) The air volume is too small: check whether the airflow is smooth and remove obstacles.
Precision air conditioning failure 9, high temperature alarm:
(1) The upper temperature limit setting is unreasonable: resetting;
(2) The unit load design is too small: check the room seal and increase the equipment if necessary;
(3) The refrigeration system is not turned on: check the operation of the refrigeration system.
Precision air conditioning failure 10, low temperature alarm:
(1) The lower temperature limit setting is unreasonable: resetting;
(2) Unusual conditions of the site: Check the sealing of the room in winter, and whether the site is abnormal;
(3) The working current of the electric heating pipe is unreasonable: check the working condition of the electric heating pipe.
Precision air conditioning failure 11, high humidity alarm:
(1) The humidity upper limit setting is unreasonable: resetting;
(2) The room is not protected against moisture: the room is protected from moisture.
Precision air conditioning fault 12, low humidity alarm:
(1) The lower limit of humidity setting is unreasonable: resetting;
(2) The device is not equipped with a humidifier: if necessary, please choose a humidifier;
(3) The humidifier is not normal: Check the working status of the humidifier.
The above is what Xiaobian brings to you is a precision air conditioner? What are the characteristics of precision air conditioners? I believe that everyone has a basic understanding of what is a precision air conditioner after reading this article. If you want to know more about decoration, please click on the decoration knowledge channel .
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