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The unit isn’t lifting up & lowering down or oil cylinder lowered itself, Troubleshooting
operations as below steps:
1.
2. Press the lower button. The red light of the lower solenoid valve signal should be
steady on.
If the oil cylinder is lowered after being lifted to the top.
Check whether the red mark of the lower solenoid valve
core is loose or not. If not clean or replace it .
Here is the coil wiring of the lifting contractor (wire
No.5&No.15) After power on, Press lifting button and
then measure whether there is a voltage about 24V
from these two places. If yes, and there is no sound of the
contractor, then should be Contractor Failure. If there is
no 24 Voltage. Then pls check whether the metal button is
well connected
The red light is signal light of lowering solenoid valve. If this light is not
On, measure whether the connection between Line 16 and the
handle is well connected
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