Braun NUVL855RM24 service manual Barrier will

Troubleshooting Diagnosis Chart

FUNCTION		POSSIBLE CAUSE	REMEDY
9.00	9.12 Poor plug connections		Check harness connectors A1 and A2, E1, N1,
BARRIER WILL			N2, E1, F1 and F2.
NOT OPERATE			Check power at motor. Slightly lengthen rod
UP OR DOWN	9.13 Barrier actuator motor or
WITH OVER-	actuator out of adjustment		end if release pin is difficult to remove or replace
RIDE SWITCHES	or faulty		actuator if necessary.
OR HAND-HELD
PENDANT	9.14 Bad power and ground		See 1.00
10.00	10.11	Faulty Outer Barrier switch	Check diagnostic LCD for Outer Barrier switch
			status. Adjust or replace switch as necessary.
BARRIER
OPERATES WITH	10.12	Barrier occupied	Remove weight from barrier. See Outer Barrier
OVERRIDE
			Occupied Calibration on page 5.
SWITCH BUT
WILL NOT GO	10.13	Handrail belt unlatched or	Latch handrail belt. Check connectors F1, F2, N1
UP WITH HAND-
HELD PENDANT		faulty harness connections	and N2.
11.00	11.11	Faulty Pressure Transducer	Check Pressure Transducer. Replace or adjust
BARRIER			as necessary. See Ground Sense Calibration on
OPERATES			page 5.
WITH OVER-
RIDE SWITCH	11.12	Below Stow Level switch out	Check diagnostic LCD for Below Stow Level switch
BUT WILL NOT		of adjustment or defective.	status. Adjust or replace switch as necessary.
GO DOWN WITH
HAND-HELD	11.13	Full Out switch out of adjust-	Check Full Out switch for proper operation.
PENDANT
		ment or defective.	Replace or adjust as needed.
12.00	12.11 No power going to switches		Check power on connector A1, pins 1 and 2.
SWITCHES	12.12	Faulty wiring	Check continuity of wires from switches to
DO NOT
			connector A2.
CHANGE
STATE IN	12.13	Faulty connections	Check for proper connections on each switch and
DIAGNOSTIC
			on each connector on the harnesses. Replace
MODE
			contact if necessary. See diagram on following
			page.

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