Esco Ascent max - Light Always off



38
Problem8:LightalwaysOFF
Cause  CorrectiveAction
SashinSASH
ALARMstate
• MovethesashtoReadyposition(normaloperatingheight).
• SwitchonthelightbypressingLIGHTbuttononthemembrane.
• LightcanonlybeONatReadysashposition.
• IflightcannotbeONwhensashatReadyposition,proceedtonext
step.
Faultyfluorescent
tube
• Replacethefaultyfluorescenttube.
• Fluorescenttubeislocatedinsidethebluepanel.
FaultyFluorescent
ballast
• SeeComponentLayouttolocatethefluorescentballast,connectorC,andrelay
board.
• TurnonthecabinetthenthelightbypressingLIGHTbuttononmembrane.
• CheckACvoltageatballastinput(betweenpinNOonJ13terminalonrelayboardto
neutral),seefigure8
‐1.
• Itshouldbe230VAC±10%for230Vcabinetor115VAC±10%for115Vcabinet.
• Ifnot,checktheLS7relayandF7fuse(refertopossiblecausefaultyrelaybelow).
• Turnofftheunit.
• DisconnectmaleconnectorConelectricalbox.
• Turnontheunit.
•
Turnonthelight,thencheckACvoltageatballastoutput(betweenfemale
connectorCpin1and2),itshouldbearound450‐600Vac.
• Replaceballastifoutputvoltageismuchlowerthanthisrange.

Readymagnetic
switchisnot
connected
properly,faultyor
misaligned
• MovesashtoReadyposition.TheLCDshouldshoweither“FANOFF”orshowing
velocity.
• IftheLCDshowing“SASHALARM”instead,pleasecheckposition/alignmentofthe
magneticswitchesinrelationtothemagnet.Seefigure8‐2.
•
Shifttheswitchormagnetpositionsothedistancebetweenthemisbetween10‐
13mmasexplainedin.Ifthedistanceistoofar,theswitchmaynotbeabletodetect
themagnet.
• IftheLCDstillshowing“SASHALARM”,theswitchmaybefaulty(pleasereplaceit)
ortheconnectionmayhaveproblem.Forcheckingonconnection,follownextstep.

Figure8‐1
Figure8‐2