Troubleshooting Instructions for PS50E LiteGait Power System
Prepare the LiteGait for troubleshooting
Make sure the LiteGait is Unplugged from Power Outlet and turned on. To turn on LiteGait
please make sure the red Emergency Stop button is not depressed by twisting the button
Does the control box recognize the battery?
1) If the battery has a charge and is connected to the control box properly, then the capacity
indicator will show solid black bars indicating a charge.
2) If the battery does not show solid black bars it could mean that the battery is low and requires
charging. Plug the LiteGait into the power outlet. When connected to the outlet, the control
box should have two illuminated LED’s (“ON” and “CHARGE”). If you do not see the “CHARGE”
LED this means that the battery is either not connected to the control box OR that the battery
charge is too low to take a charge.
IF YOU DO NOT SEE THE CHARGE INDICATOR WHEN UNPLUGGED OR YELLOW CHARGE
LED WHEN PLUGGED IN, THEN THE BATTERY IS EITHER DISCONNECTED FROM
CONTROL BOX OR REQUIRES REPLACEMENT.
Does the battery hold charge under load?
3) If the battery capacity indicator shows 100% after charging the battery. Then when you
attempt to raise or lower the actuator, the voltage immediately drops down to 50%, 25% or
THIS INDICATES THAT THE BATTERY IS UNABLE TO SUSTAIN THE VOLTAGE NECESSARY
TO MOVE THE ACTUATOR. THE VOLTAGE IS DROPPING OUT UNDER LOAD AND THE
BATTERY THEN WOULD NEED TO BE REPLACED.
Do all 4 Buttons on Hand Switch Communicate with Control Box?
4) Each button on the handwitch switches a corresponding relay within the control box. If you
press a button on the hand switch you should be able to hear or feel (if you are touching the
control box) a relay switch. If all four buttons switch properly, then it is very likely that the
control box and hand switch are working properly and then you issue is either a connection
issue, battery issue or possibly an actuator cord issue.
If you do not feel clicking for 1 of the buttons on the hand switch, this means that either the
hand switch connection is bad, the control box is bad or the hand switch is bad. The hand
switch can be tested using an ohm meter performing the test listed below. If the hand switch
is functioning properly, then the issue is with the control box and the control box will need to
5) Hand Switch Functionality Test with Ohm Meter
2 of 4 buttons work properly on the LiteGait
6) The actuator on your unit is dual stage
actuator that is controled by two
independent channels on the LiteGait
power system. The top two buttons on
the handwitch control the middle section
of the actuator while the bottom two
buttons control the top most section of
the actuator. Sometimes if the
connections of the actuator cord are
loose either in the control box OR the
back of the actuator, this will effect the
performance of the device.
Check Actuator Cord for Output
7) Using a volt meter the output of the actuator cord
can be tested by inserting the probes into the plug
that is insterted into the actuator. When the hand
switch up or down buttons are pressed for Channel
1, the actuator cord should output a positive or
negative 24V. Channel 2 should output the same
voltage but using the other ports on the actuator
Intermittently the actuator works properly
8) If the battery, hand switch, control box, and actuator cord all independently are working
properly according to the previous checks. Then the issue could be the result of the
combination of the control box and battery. If the battery has a high voltage on the battery and
low impedance of the motor causes an initial current spike which is high enough to trigger current
protection on the control box circuit, cutting off power to the actuator immediately. A test for this
would be to drain the battery down by cycling the section of the actuator that is working proplery.
After draining the battery down, if the second channel starts to work again, the cause was strictly
that the battery voltage was too high. This will happen occasionally with new batteries, but goes
away after the battery is has been used.
If you are unable to diagnose your issue after completing these steps, please feel free to contact technical support for
Technical Support can be reached via email at firstname.lastname@example.org.