Troubleshooting Reference
Manual # 42-02-1P28 A3 5-77
EP COMMAND/EPI MISMATCH (809) Description: The car is communicating with the dispatcher, but its EPI
input status does not match the emergency power command from the dis-
patcher (car detects commercial power loss but group is sending an emer-
gency power OFF command or vice versa). Cars shuts itself down to
prevent overloading the generator if the dispatcher has selected another
car to recall/run.
Troubleshooting:
Check both the car and dispatcher EPI inputs statuses and related circuitry
and make sure that the inputs match.
Check that the ALIVE input is programmed, and related circuitry is function-
ing correctly. This input must be ON only if the dispatcher is powered and
running.
EP RECALL (19) Description: Emergency power is available, and the recall process has
been initiated. Cannot be bypassed.
System Verifies: - EP Data Status = EP Recall - EPI flag = 1 for normal
operation (active low logic)
Troubleshooting:
If in error, check System IO > Programmed Inputs > EPI status.
EP RECALL COMPLETE (21) Description: The car has completed recall to the designated recall floor.
Cannot be bypassed.
System Verifies: - EP Data Status = EP Recall Done
EP RECALL FAIL (22) Description: Emergency power recall has been initiated but the car has
failed to recall. Cannot be bypassed.
System Verifies: - EP Data Status = EP Recall Fail
Troubleshooting:
Check that car is on automatic operation with no active faults.
EP RECALL ISV (20) Description: The car is moving toward the recall floor under emergency
power. Cannot be bypassed.
System Verifies: - EP Data Status = EP Recall ISV
Troubleshooting:
Check the EPI status on CAR DIAG > EMERG. PWR & EARTHQUAKE.
EPI input terminal must be 0V for normal operation.
EP RECALL NEXT FLOOR (282) Description: Emergency power is available and recall to the next floor has
been initiated. Cannot be bypassed.
Troubleshooting:
If in error, check System IO > Programmed Inputs > EPI status.
EP RUN (23) Description: The car has been selected to run under emergency power.
Cannot be bypassed.
System Verifies: - EP Data Status = EP Run
Troubleshooting:
If in error, check that the EP Run has not been erroneously assigned to an
input or, if a valid input has been assigned, verify the electrical state of that
input and that it is wired correctly.
Verify EP Auto (System IO > Programmed Inputs).
EP SHUTDOWN (18) Description: Normal power has been lost and the car is stopped. The car
will remain stopped until backup power becomes active or commercial
power is restored.
System Verifies: - EP Data Status = EP Shutdown
Troubleshooting:
If in error, check status of System IO > Programmed Inputs, EPI.
Verify EPI not programmed if not used.
If used, verify EPI wiring per job prints.
Table 5.10 Touch Screen Event Listings
Event Description
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