Zepro Z 1500 Technical Manual page 19

Control cards
Fault indication
When the ZePRO1 control card detects a fault, it displays a fault code on the display to assist troubleshoo-
ting. The fault code consists of a letter followed by a two digit number. The letter indicates the type of fault
and the number provides additional information about the fault.
If the card detects several faults, they are prioritised in the following order: L/H, E, F, U and A. When the cabin
switch is turned off, the system scrolls through a list of the last five errors detected before the display turns
off after approx. 5 minutes when the control card goes into sleep mode.
All fault codes can be reset manually by switching the cabin switch (if present) off and then back on again.
A - Internal fault
Fault code A is displayed when the control card has detected an internal fault. In some cases the tail lift can
be used as normal when this code is displayed as long as it functions correctly. If the lift is not functioning
correctly however, the control card needs to be replaced.
E - System locked
Fault code E is displayed when the control card is locked by a control device equipped with a locking fun-
ction, most commonly a radio control device or a spiral cable control device. The number following the letter
identifies the card input that the device used to lock the system is connected to. For example E1 indicates
Ctrl1, E2 indicates Ctrl2 and so on.
Once a spiral control device equipped with a locking function has been used, the control system is locked
to the current control device until it is unlocked manually with the respective control device's unlock button.
The radio control device is also equipped with a locking function. The control system can then be locked/un-
locked by pressing and holding the lock/unlock button. In the event of a fault in the remote control, it can be
unlocked by turning the cabin switch off and then back on.
The fault code resets automatically if the control system has not received a signal from the relevant control
device for 6 minutes.
F - Output short circuit
Fault code F is displayed when the card detects an unusually high current draw through one of the outputs
which implies a short circuit on that output. The number following the letter identifies the output in question
with 0-7 denoting output U1 through U7, the number 8 denoting the control device output section and the
number 9 denoting the sensor power output section.
The fault code is reset automatically when/if the card can detect normal current draw through the output.
H - High voltage
Fault code H is displayed when the card detects an input voltage that is higher than expected. The number
following the H indicates the measured voltage. For example, H32 means that the measured voltage is 32
Volts.
The fault code resets automatically once the voltage becomes acceptable again.
L - Low voltage
Fault code L is displayed when the card detects an input voltage that is lower than expected. The number fol-
lowing the L indicates the measured voltage. For example, L9 means that the measured voltage is 9 Volts.
The fault code resets automatically once the voltage becomes acceptable again.
U - Output not connected
Fault code U is displayed when the card powers an output with nothing connected to it. The number 0-7 fol-
lowing the letter U identifies the output in question, U0 through U7.
The fault code is reset automatically when/if the card can detect normal current draw through the output.
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