Air dehumidifier general troubleshooting methods

Air dehumidifier general troubleshooting methods

An air dehumidifier fault types : 1 the use and operation error ( false fault )

The 2 air ventilation system fault

The 3 electrical control system fault

4 refrigeration system fault

Two, the basic steps of fault maintenance

1 elimination of false fault

2 check the ventilation system fault

3 control system fault analysis and elimination

4 check in refrigeration system fault

5 consider the relationship between aspects of fault system

Three, the phenomena of fault judgment and analysis

1 elimination of false fault

(1 ) reference manual, according to the operating rules of operation of the dehumidifier, can avoid some due to the use of improper regulation dehumidifier can not operate normally or not running of false failure.

(2 ) as the machine protection action caused by false fault

A. Power off, power supply air switch tripping, leakage protection action

B timer time interval greater than the boot

C. The ambient temperature is too low or too high (room temperature more than 38 DEG C )

D low voltage startup difficulties caused by or frequent starting and stopping

E dehumidifier work, room temperature will be slightly elevated, it is reheated and motor heat dissipation caused by

F dehumidification machine works, the room will have some musty, which is the water out.

2 see dehumidification machine operation

(1 ) components of vibration is normal?

(2 ) and a low pressure return pipe of evaporator frosting condensation is uniform?

(3 ) refrigeration pipe wall is the oil? If there is any traces of oil, the point has the leakage phenomenon, because the Freon leak out to volatilize, frozen oil not volatile, so the residue in the wall of the tube, which is also examined in pipeline leakage is an effective way.

(4 ) see the electrical circuit is disconnected, connectors are off, whether the blown fuse, heating surface are charred discoloration ;

(5 ) look at the various connectors, fasteners, check whether the loosening and dropping, corrosion and so on. Especially for the use of or disabled longer dehumidifier, more attention should be paid on the aspects of the case;

(6 ) through listening and touch, a deeper understanding of the operation of the dehumidifier, which is the normal operation of the sound, which is not normal operation fault sound.

A. The wind leaf operation cannot have the rub-impact acoustic, various parts can be caused by the vibration and impact sound, this is the most common of the two fault sound.

B compressor run time should emit only normal uniform electromagnetic acoustic, should not be "all " like liquid impact sound, and "Da " like metal sound. Capillary of the refrigerant in the normal should only be a" hissing " like the flow of sound. A normal dehumidifier in running, should only slight compressor sound and wind, without any other noise.

C. Touch the dehumidifying machine parts, with a hand feel temperature, can determine whether the normal operation of the dehumidifier. But also touch dehumidifier shell, feel the vibration. The fan motor and the compressor can touch its body temperature is too high not normal.

3 test parameters

Electrical apparatus for the detection of dehumidifier running parameters. As with current meter to measure the total current, if less than the rated current, is largely Freon is insufficient. Use megohmmeter check electrical parts of the insulating, can check out the damaged parts. With a multimeter to check out the capacitor is open or short circuit. Thermometer to measure the air temperature.

4 air dehumidifying machine common fault

(1 ) leakage: is the main pipeline of refrigeration system and components leaking fluorine ; outlet water leakage ; electrical system leakage ;

(2 ) blocking : mainly refers to the cooling pipe dirty block and the oil block, blocked welding ; capillary ice blockage; dirty filter plugging ; air inlet filter, evaporator fin plug; the air inlet and outlet disorder;

(3 ) breaking: mainly refers to the electrical circuit, includes a fuse blew the wiring head, connector fault ;

(4 ) : including a blower motor burn burn burn winding winding, compressor, condenser burned, computer boards burned ;

(5 ) card is mainly compressor cylinder clamping, and some connecting pieces, pieces of solid corrosion spaces;

(6 ) the rub: is the main blower fan running with and the volute collision rub.

| Updated:2011.07.14    Source:    Clicks: