Quest Controls BACnet T-Stat Spécifications télécharger pdf (Page 14)

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BACnetT‐StatUser’sManualRev1.1,7/28/11 Page|13

7.0CareandCleaning

TheBACnetT‐Statshouldprovideyearsofuninterruptedservice.Minimalpreventivemaintenanceis

required.However;itisimportanttomakesurethattheT‐

Statiskeptfreeofdust.AdustyT‐Statwillnotallowairto

circulateproperlyaroundthebuilt‐intemperatur e sensor

effectingproperoperation

oftheunit.

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8.0Troubleshooting

LCDScreenisdarkandnocharactersare

displayed

Removecoverandverifypresenceofpoweronthe“R”

terminal,checkconnectionofthecommononthe“C”

terminal.Checkforpresenceof24VACbetweenRandC.

T‐StatmodesayCool1,butcompressor

doesnotengage

VerifyconnectiontoHVACunit.Ensureshort‐cycletimeris

notinhibitingunit.

Clocklosestimeafterpowerfailure ReplacetheCR1025Lithiumbattery

Buttonsdonotrespond Pressbuttonsslowly,somefunctionsmaytakepressingthe

buttontwice.

Displayiscorrupted First,cyclepowertotheunit.Ifthisdoesnotcorrectthe

problem,resetsystembyremovingtheT‐Statbodyfromthe

mountingplate.Thenreturnthebodytothemountingplate

whiledepressingtheuparrow,centerbutton anddown

arrowallatthesametime.

Thedisplaywillrespondwith

“ColdSense”,thesebuttonsmustbehel dforaminimum5

second.Thiswillbegina

systemrestartandthe

displaywillrespondwith

“ColdStart”.Releasethebuttonsatthistime.Thisaction

willresettheT‐Statandreturnallsettingstotheir

factory

defaults.Allcustomscheduleswillbeerased.

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Quest Controls BACnet T-Stat Spécifications Page 14