HU-LIFT

No sound when the lifting button is pressed

  • Checking method:

    1. Make sure limit switch cables are correctly positioned. Check if any loose connections. Video of repair instruction as below.

    2. Press lifting button and use a multimeter to test if there is voltage on lifting contactor coil.

    If voltage is detected but lifting contactor doesn't work, then contactor is damaged.

    3. If no voltage is detected, check if connection between controller lifting cable and lifting contactor cable is faulty

    If no problem, use a multimeter to check if lifting button is normal

    If above causes are ruled out, the oretically it can only be fault with display circuit board  (but this has never occurred)

Step1:Lifting limit switch check and repair

Check&repair lifting limit switch

Way to repair cable

Step2: Use multimeter to measure the voltage of lifting contactor

Use multimeter to measure the voltage of lifting contactor

Step3:Check the connection between controller lifting cable and lifting contactor cable

Check the continuity of the line with multimeter

Step4: Check if lifting button is normal

Check the lifting button with multimeter

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