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Primary and Redundant Car Bypass Switch Inputs don’t match
The Car Door Bypass Switch signals have a primary and a redundant input terminal on the
controller. Under normal conditions, the two inputs should change together. If the controller
detects a difference on the inputs, a redundancy fault is declared.
Check wiring between Car Door Bypass switch and Machine Room SRU.
Verify that both Car Door Bypass witch input LEDs transition at the same time when toggling
the switch.
Attempting to bypass locks when car is not on correct mode of Inspection.
If the controller is equipped with Hall Lock Bypass switch, it must be in the off position when
not on Cartop or In-Car Inspection.
Car Door Bypass Switch error
Attempting to bypass gate switch when car is not on correct mode of Inspection.
If the controller is equipped with Car Door Bypass switch, it must be in the off position when
not on Cartop or In-Car Inspection.
Low pressure input is active
This applies only to hydraulic controllers. The car is not allowed to move if low pressure is
detected.
Verify that Low Pressure switch is wired and operating correctly.
If Low Pressure switch is not needed, connect a permanent jumper from M24 to Low Pressure
input terminal on Machine Room SRU
Controller is on emergency power and not selected to run
The Emergency Power input on the car or group SRU board is active but this car is not selected
to run.
Check generator Up to Speed input. If this input is not active no car will be allowed to run. If
no Generator Up to Speed contact is present on the generator, jump the Generator Up to
Speed input to the Emergency Power input on the controller board.
Check that the Emergency Power Selector Switch is set to AUTO or set to this car.
Wait for group control board to select this car to run. In a multi-car group, normally only one
car is allowed to run at a time under emergency power.
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