Troubleshooting Reference
Manual # 42-02-1P28 A3 5-63
DLAT OPEN-RUNNING (238)
REAR DLAT OPEN_RUNNING (793)
Description: Asserted if the top floor door lock string is not made during a
run. The car will make an emergency stop.
Troubleshooting:
Verify DLAT/R input electrically and mechanically.
Trouble shoot lock string.
DLMS OPEN-RUNNING (237)
REAR DLMS OPEN-RUNNING (792)
Description: Asserted if the middle door lock string is not made during a
run. The car will make an emergency stop.
Troubleshooting:
Verify DLMS/R input electrically and mechanically.
Trouble shoot lock string.
DOB BYPASSED FRONT (35)
DOB BYPASSED REAR (780)
Description: The Door Open Button is stuck. Fault-bypassed in Construc-
tion/Inspection.
System Verifies:
- Door Flags, Stuck DOB Timer = Elapsed
- Door Flags, DOB Bypassed and DOB Failed are not true.
Troubleshooting:
Verify input and switch.
See if continuously active on System IO > Programmed Inputs, DOB.
DOB FAIL (Not Used) (36) Description: The door open button has failed. Fault-bypassed in Construc-
tion.
System Verifies:
- Door Flags = DOB Failed
Troubleshooting:
Verify DOB switch and wiring.
Verify door operator functioning properly.
DOL INPUT FAILURE (469)
DOLR INPUT FAILURE (500)
Description: The Door Open Limit (DOL/R) input is not in the correct state
for the position of the door as determined by the Door Position Monitor
(DPM/R) input and the Gate Switch (GS/R) input.
1. If DPM/R is high, DOL/R must also be high. Check the wiring to terminal
HC-CTL board DOL/R.
2. If the GS/R input is high, DOL must also be high. Check the wiring to ter-
minal DOL/R.
3. Replace the HC-CTL-2 board.
DOL LOW - DCL LOW (224)
DOL LOW - DCL LOW REAR (225)
Description: The door open and close limits are not made (DOL and DCL =
0). If the DOOR CONTACT FLT ENABLED option = YES, the car is shut down
and the door close button is rendered inoperative as long as the fault is
present (per applicable elevator safety code). If the option = NO, the fault
is logged but otherwise ignored.
Troubleshooting:
Check door open and close limit inputs and contacts.
DOL LOW - DLAB HIGH (233)
DOLR LOW - DLABR HIGH (234)
Description: Car is at the bottom floor with doors open but the bottom
door lock string is made (DOL = 0, DLAB = 1). If the DOOR CONTACT FLT
ENABLED option = YES, the car is shut down and the door close button is
rendered inoperative as long as the fault is present (per applicable elevator
safety code). If the option = NO, the fault is logged but otherwise ignored.
Troubleshooting:
Check door open limit and bottom door lock string inputs and contacts.
Table 5.10 Touch Screen Event Listings
Event Description
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