Troubleshooting Reference
Manual # 42-02-1P28 A3 5-73
DVR2 MUSE FAIL TO DEACT (625)
DVR3 MUSE FAIL TO DEACT (658)
DVR4 MUSE FAIL TO DEACT (691)
Description:
The MUSE input monitors the status of the USE triac and the USE triac soft-
ware output. When USE fails to deactivate when expected this fault is gen-
erated. When the doors are locked, the 2L bus is high, USL1 and USL2
limits are closed, the up normal limit (UNTD) is closed and the car is idle,
terminals US and USE should be 120VAC.
Troubleshooting:
1. Check the associated wiring.
2. Check the up fast valve coil.
3. The USE triac may have shorted. Replace the HC-DVR board
DVR2 OLM INPUT FAILURE (636)
DVR3 OLM INPUT FAILURE (669)
DVR4 OLM INPUT FAILURE (702)
Description: The OLM input monitors the status of the both the thermal
overload and the starter overload contacts. Bus 2L should be 120VAC and
relay SAFL should be picked only if the doors are locked. 2MV bus must also
be active.
Troubleshooting:
1. Check that IDC terminal 2L on the HC-CTL-2 board connects to IDC ter-
minal 2L on the HC-DVR board.
2. Check the wiring of the thermal overload between terminals TO1 and
TO2 on the HC-DVR board.
3. Check the wiring of the starter overload between terminal OL1 and OL2
(if present).
4. Replace the HC-DVR board.
DVR2 OLM INPUT IS LOW (637)
DVR3 OLM INPUT IS LOW (670)
DVR4 OLM INPUT IS LOW (703)
Description: The OLM input monitors the status of the both the thermal
overload and the starter overload contacts. Bus 2L should be 120VAC and
relay SAFL should be picked only if the doors are locked. 2MV bus must also
be active.
Troubleshooting:
1. Check the wiring of the thermal overload between terminals TO1 and
TO2 on the HC-DVR board.
2. Check the wiring of the starter overload between terminal OL1 and OL2
(if present).
3. Replace the HC-DVR board.
DVR2 RP SENSOR TRIPPED (638)
DVR3 RP SENSOR TRIPPED (671)
DVR4 RP SENSOR TRIPPED (704)
Description: The Reverse Phase sensor detected a problem with the
incoming power and the RP sensor’s N/C contacts activated HC-DVR board
RP1 input (active high - 120VAC). The car returns to the bottom landing,
cycles the doors and shuts down. The DOB can cycle the doors.
Troubleshooting:
1. Verify that HC-DVR board terminal RP1 to ground = 120VAC.
2. Check the wiring (phase rotation) to the motor starter.
3. Check the wiring to the RP sensor (incorrect, loose, or missing wires).
DVR2 STARTER TYPE ERROR (617)
DVR3 STARTER TYPE ERROR (650)
DVR4 STARTER TYPE ERROR (683)
Description: The HC-DVR board has received an invalid starter type from
the from the MPU-2-TS board.
Troubleshooting:
May be caused by a communication error between the HC-MPU-2-TS and
HC-DVR boards, call MCE Tech Support.
DVR2 UP NORMAL LIM OPEN (647)
DVR3 UP NORMAL LIM OPEN (680)
DVR4 UP NORMAL LIM OPEN (713)
Description: This message indicates that the car has traveled beyond the
top terminal landing and has opened the up normal (directional) terminal
switch.
Troubleshooting:
1. Check the location of the car.
2. Check the voltage at terminal UNTD.
3. Check the limit switch connections.
4. Replace the HC-DVR board.
5. Verify integrity of the landing system.
Table 5.10 Touch Screen Event Listings
Event Description
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