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Machine fault self check list


dehumidifier
LF-826E

         Fault phenomenon

     Cause of failure

Solution

                    1、Fault codeE1

                  Humidity sensor failure

                    Humidity sensor wire or sensor falls off

                     Change humidity sensor

                    2、There is no display state on the display screen when the power is turned on

                  Is the power line connected

                  Check the power cord connection

                    Whether the connection line between the main board and the display screen falls off

                    Adjust connection line

                    Is the main board fuse blown

                    Replace the fuse

                   Mainboard or display failure

                    Replace the motherboard or display

                    3、The display shows but the fan does not work

                    Key stuck

                    Change the surface paste or adjust the screws of the control board

                    Loose wiring

                    Check whether the wiring is loose

                    Bad motherboard

                    Replace the motherboard

                    Motor stuck

                    Replace the motor

                    Poor capacitance

                    Change capacitor

                    4、The fan is in normal operation and dehumidification is not obvious

                  Are doors and windows open

                    close the doors and windows

                    Is the filter screen blocked

                    Clean the filter screen

                    Is the humidity too low

                    Adjust humidity setting

                    Is the ambient temperature too low

                   Heating with heating equipment

                    Is there any obstruction at the air outlet

                    Remove obstacles

                    The environmental area is too large

                    Change dehumidifier or supplement dehumidifier

                    5、The whole machine runs normally and has little water output

                    Is the filter screen blocked

                    Clean the filter screen

                   Is there any obstruction at the air outlet

                    Remove obstacles

                    Too little refrigerant or capillary oil resistance

                    Contact manufacturers

                    Is the wind speed working normally

                    Exchange wind speed

                   Is the room temperature above 5 ℃ and below 38 ℃

                    The set temperature is lower than the ambient temperature

                    6、The fan operates normally without dehumidification

                   Is the humidity set higher than the ambient temperature

                    Adjust the humidity value

                    Is the refrigerant leaking

                    Check the copper tube for leakage

                    Compressor not started

                    Compressor wiring loose

                    Check the main board circuit for output

                    If the overload protector is poor, replace the protector

                    Contact the manufacturer for compressor failure

                    If the capacitance is poor, replace the capacitor

                    7、It is noisy during operation

                    Is the machine placed smoothly

                    Adjust machine position

                    Is the filter screen blocked

                    Clean the filter screen

                   Whether the anti vibration screw of compressor is loose

                    Adjust the anti vibration nut of compressor

                    The wind leaves swing a lot

                    Adjusting blade screw

                    Is there any obstruction at the air outlet

                    Remove obstacles

                   Piping collision with structural parts

                    Adjust piping

                    8、water leakage

                   Is there any foreign matter blocking the water pipe

                    Remove foreign matter

                   Sand hole in water pipe

                    Replace the water connection pipe



Civil aircraft lf-838e / 8150e below

Fault phenomenon

Cause of failure

Solution

                    1、Fault code    E1

                  Temperature sensor failure

                   Replace the temperature sensor

                    2、Fault code     E2

                    Humidity sensor failure

                    Humidity sensor wire or sensor falls off

                    Replace humidity sensor

                    3、382E/582E   E4

                    Water tank not in place

                    Adjust the water tank

                    Full of water

                    Pour water

                    Poor microswitch

                    Replace microswitch

                    Wrong switch wire insertion

                    Adjust the switch wire

                    4、There is no display state on the display screen when the power is turned on

                    Is the power line connected

                    Check the power cord connection

                    Whether the connection line between the main board and the display screen falls off

                    Adjust connection line

                    Is the main board fuse blown

                    Replace the fuse

                    Mainboard or display failure

                    Replace the motherboard or display

                    Key stuck

                   Change the surface paste or adjust the screws of the control board

                    5、The display screen shows that the whole machine is not turned on or the code is garbled or broken

                   Key failure or wrong insertion of flat cable

                    Replace the surface paste or adjust the cable

                   Loose wiring

                    Adjust the wiring

                    Bad motherboard

                    Replace the motherboard

                    Poor display

                    Replace the display

                    6、The dehumidification is not obvious or the water output is small

                   Are doors and windows open

                    close the doors and windows

                   Is the filter screen blocked

                    Clean the filter screen

                   Is the humidity too low

                    Adjust the humidity value

                    Is there any obstruction at the air outlet

                    Remove obstacles

                    The environmental area is too large

                    Change the humidity machine or add the dehumidifier

                    Clogged capillary or filter

                    Contact manufacturers

                    7、The fan operates normally without dehumidification

                    Is the humidity set higher than the ambient humidity

                    Adjust humidity setting

                    Is the ambient temperature too low

                    Heating with heating equipment

                    Is the refrigerant leaking

                    Check the copper tube for leakage

                    Compressor not started

                    Compressor wiring loose

                    Check the main board circuit for output

                    If the overload protector is poor, replace the protector

                    Contact the manufacturer for compressor failure

                    If the capacitance is poor, replace the capacitor

                    8、water leakage

                    Machine imbalance

                    Adjust machine position

                    Outlet pipe blocked

                    Remove foreign matter

                    Water tank not in place

                    Adjust the position of water tank

                    There are sand holes in the water tray

                    Pour in the glass glue

                    Loose connection pipe

                    Tighten the water connection pipe

                    9、It is noisy during operation

                    Is the machine placed smoothly

                    Adjust machine position

                    Is the filter screen blocked

                    Clean the filter screen

                    Whether the anti vibration screw of compressor is loose

                    Adjust the anti vibration nut of compressor

                    The wind leaves swing a lot

                    Adjusting blade screw

                    Air outlet blocked

                    Remove obstructions

                    Piping collision with structural parts

                    Adjust piping


Failure of wet film humidifier

Fault phenomenon

Cause of failure

Solution

                    1、Fault codeE3

                    Sensor wire not connected

                    Connect the sensor wire

                    Sensor failure

                    Replace the sensor

                    2、No display on the display screen

                    Is the power line connected

                    Check the power supply

                    Whether the connecting wire falls off

                   Connect the connecting wire

                    Is the main board fuse blown

                    Replace the fuse

                    Display failure

                    Replace the display

                    3、Control panel failure

                    Key failure

                    Replace the mask