Braun NUVL855R service manual Lift will GO UP with

Troubleshooting Diagnosis Chart

FUNCTION		POSSIBLE CAUSE	REMEDY
	4.11	Barrier Down LED (D29) illuminated	Barrier is down, barrier release pin partially out
4.00			or Barrier Down switch out of adjustment. Make
			adjustments as necessary.
LIFT WILL
GO UP WITH	)XOO2XW/(''QRWLOOXPLQDWHG		&KHFN)XOO2XWVZLWFKIRUSURSHURSHUDWLRQDGMXVW-
OVERRIDE
			ment. Replace or adjust as necessary.
SWITCH BUT
NOT WITH	4.13 Remote not working properly		Check for Up LED D20 when hitting Up button on
REMOTE
			remote. Check battery in remote. Replace bat-
			tery/remote as necessary.
5.00	5.11	Hydraulic Down valve bad	Check for power on valve “T” wire going to so-
LIFT WILL			lenoid when pushing manual override or remote
NOT GO			button. Replace if necessary.
DOWN WITH	5.12	Dirty Down valve (clogged)	)OXVKYDOYHE\SXVKLQJPDQXDORYHUULGHXSDQG
MANUAL
OVERRIDE			down buttons at same time for 4 to 5 seconds
OR WITH			several times.
REMOTE OR
GOES DOWN
SLOWLY
OR DRIFTS
DOWN BY
ITSELF
6.00	)XOO2XW/(''QRWLOOXPLQDWHG		&KHFNIRUSURSHURSHUDWLRQRI)XOO2XWVZLWFKZLWK
LIFT WILL GO			LED on P.C. board. Replace or adjust switch as
DOWN WITH			necessary.
OVERRIDE
BUT NOT WITH
REMOTE
	7.11	Defective self-reset breaker	Check for power through 20 amp self-reset breaker.
			Replace if necessary.
7.00	7.12 No power on terminal 9		&KHFNYHKLFOH'RRU)XOO2SHQVZLWFKDQGZLULQJ
LIFT WILL NOT	7.13	Interlock circuit incomplete	9HULI\LQWHUORFNLQVWDOODWLRQ
GO OUT WITH
OVERRIDE OR	7.14 Poor plug connections		Check harness connections A1, A2, B1 and B2
REMOTE
	7.15	Bad in/out motor	Check power at motor. Replace motor if necessary.
	7.16 Bad power and ground		See 1.00
	)DXOW\%HORZ6WRZVZLWFK%HORZ		Check for proper operation of Below Stow switch.
8.00		Stow LED (D24) not illuminated
LIFT WILL NOT	8.12	Pressure LED (D18) illuminated	Remove weight from platform. See Platform
STOW WITH
REMOTE			Sense Calibration on page 5.

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