19P03-DOC01E REV-3
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Troubleshooting after a fatal error
When the control box is in fatal error mode, a fatal error beep will be present each time a
button is pressed to alert the user of the condition. In addition, all lights will flash when
the system is in fatal error. Each function of the control box responds to fatal errors in a
specific manner. Here are the types of possible errors:
1) Error of positioners on actuators: occurs when the control box expects to see
positioning pulses when an actuator moves but does not see these pulses.
2) Error of a motor output: occurs when power demand is generated, but there is no
command to go with it. This error is generated for safety reasons, so that no
involuntary movement occurs on the bed without a specific code having been
generated (the press of a button generates a unique code).
3) Error actuator (s) missing occurs when a function is called, but the actuators
required for the function are not all present.
A fatal error is to be deleted by pressing the buttons for raising and lowering the height of
the bed on the nurse control at the foot of the bed or on the removable control (hand
control) for 5 seconds. You will hear the beeps (10) from the resetting of the fatal error
while this is done. When the beeps stop, the reset is complete.
A fatal error should not lead to the loss of memory of the actuators position. It is up to the
user who resets the fatal error to determine if the system is in a safe position.