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Cabinet Troubleshooting
3-1
The master control display and the row displays show error messages when there is a problem. The
messages are shown in the matrix below along with possible causes and diagnostic tests.
Error Message Cause Tests
Call service row display
error
Rownumberalsodisplayed*
Themastercontrolboardhaslost
communicationwiththespecified
board.
• Turnthecabinetoffandbackon.
• Ensuretherearenosoftware
incompatibilities.
• Inspectribboncableconnections.
Call service distribution
board 0 error*
Themastercontrolboardhaslost
communicationwiththetop
distributionboard.
• Adisplayconnectioncanproduce
thisdisplay.Beforereplacinga
distributionboard,removepower
fromtheunitanddisconnectthe
displaysfromtheaffected
distributionboard.Returnpower
totheunitand,oneata
time,plug
inthedisplays,cyclingpowereach
time.Iftheproblemisdisplay‐
relateditwillgoawaywiththe
affecteddisplaydisconnected.
Call service distribution
board 1 error*
Themastercontrolboardhaslost
communicationwiththebottom
distributionboard.
Call service rate of
rise top**
Row’stopplatefailedtoreach
requiredtemperatureinprescribed
timewindowafterstartuporwhen
switchingbetweenmenus.
• Turnthecabinetoffandon,which
cancleartheproblemifitis
softwarerelated.
• ChecktopplateRTDoutputagainst
chartonpage2‐4.
• Enter
servicecode(seepage2‐1)
andswitchtopplateonandoffto
ensureitisrespondingtocabinet
circuits.
Call service rate of
rise bot**
Row’sbottomplatefailedtoreach
requiredtemperatureinprescribed
timewindowafterstartuporwhen
switchingbetweenmenus.
• Turnthecabinetoffandon,which
cancleartheproblemifitis
softwarerelated.
• CheckbottomplateRTDoutput
againstchartonpage2‐4.
• Enterservicecode(seepage2‐1)
andswitchbottomplateonandoff
toensureitisrespondingto
cabinetcircuits.
Call service top row temp
too high**
RTDsensorisproducingareading
thatisoutofrange.Theproblemcan
beafailedRTD,heateror
distributionboard.
• Compareplatetemperatureto
displayedtemperature.
• CompareplateRTDresistanceto
chartonpage2‐4.
• Switchplateon/offwithservice
codetoensureitis
respondingto
cabinetcircuits.
• Withplateonandcallingforheat,
checkampdrawonleadsbetween
distributionboardandheater
plate.Ampdrawonaproperly
functioningplateshouldbe1.67.
Call service bot row temp
too high**
Call service top row temp
too cool**
Call service bot row temp
too cool**
Call service top sensor
error hi temp**
Call service bot sensor
error hi temp**
Call service top sensor
error low temp**
Call service bot sensor
error low temp**
*Shownonmastercontroldisplay.**Shownonaffectedrowdisplay.