Specifications

TroubleshootingGuide
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13|Page
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5.3TROUBLESHOOTING‐ERRORCOD ES 
• Allunitsareselfdiagnosticforsafetyandconveniencewhentroubleshooting.
• Ifthereis a problemwiththeinstallationortheunit,itwilldisplayanumericalerrorcode on
the TM‐RE30 Remote Controller (if installed) or on the 3‐digit 7‐Seg LED at the center
 of the
computerboardtocommunicatethesourceoftheproblem.
• Consultthefollowingchartforthecauseofeacherrorcode.
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SINGLEUNIT
• The3‐digit7‐SegLEDdisplayserrorcode,ortheTM‐RE30(ifinstalled)displaysthe3‐digiterrorcode.
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EASY‐LINKSYSTEM
The7‐SegLEDoftheindividualunitwiththeerrorinquestiondisplaysthewhole3‐digiterrorcode.
TheTM‐RE30(ifinstalled)displaysa3‐digitnumberwhichsignifieswhichunithastheerror,andwhat
theerrorcodeis.
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Table3–ErrorCodes
Error Symptom Error Symptom Error Symptom
031 IncorrectDipswitch
Settings
391 Air‐fuelRatioRodFailure 661 AbnormalWaterBypassValve
101 Warningfor991
ErrorCode
441 FlowSensor 701 ProportionalValve/
Computer
111 IgnitionFailure 510 AbnormalMainand
SolenoidGasValve
711 Hi‐Limitswitch/
OverheatCutoffFuse
121 FlameLoss 551 SolenoidValves 721 FalseFlameDetection
311 OutputThermistor 611 AbnormalFanMotor 741 RemoteController
CommunicationFailure
321 InletThermistor 621 ExhaustFanMotor
(Indoormodelsonly)
761 CommunicationFailure
(Easy‐Link)
331 MixingThermistor 631 ExternalPump 941 AbnormalExhaust
Temperature
341 ExhaustThermistor 651 AbnormalFlow
AdjustmentValve
991 Abnormalcombustion
7‐SegLED
Figure4
Figure5
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TM‐RE30(Optional)