Specifications

TroubleshootingGuide
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14|Page
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Example:IfUnit#2hasthe“321”errorcode(inletthermistorfailure)
• Waterheater#2:Itwilldisplay“321”onthe7‐SegLED,justlikeintheSingleUnitexample.
• TM‐RE30:Itwilldisplay“232”onitsscreen.Thefirst“2”indicatesthatUnit#2hastheerr o r.The
“32”indicatesthefirsttwodigitsofthe“321”errorcode.
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ERRORCODE031:INCORRECTDIPSWITCHSETTINGS
1) Turnoffthepowersupply.
2) Removefrontcoverandlocatethedipswitchesonthecenterofthecomputerboard.
3) Checkthedipswitchsettingsontheleftandrightbanks.Refertop.22forthecorrectdipswitch
positions.
a. Gastypeisacommondipswitcherror.
b. Mostotherswitchesshouldbeon
defaultsettingUNLESStheparticularsetuprequires
otherwise.
c. Easy‐Linksystems:Themasterheatershallhavethenumber10dipswitchontherightbankin
theONposition(left).Theremainingheaters(theslaveheaters)willhavethenumber10
dipswitchintheOFFposition(right)andthecommunicationwires
willbeattachedtotheslave
in/outplugs.
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ERRORCODE101:ABNORMALCOMBUSTION
1) Blockageintheairway.Checkthefollowingareas:
a. Ventinglengthobstruction(Birds’nests,trash,etc.)
b. Backflowpreventerinstalledbackwards
c. Heatexchanger
d. Fan
2) Checkthemanifoldpressure(p.25).Adjustthemanifoldpressuretothecorrectvaluesifnecessary.
3) Ifintakeairiscontaminatedwith
dust,lint(laundrymachinenearby),grease(kitchens),orother
contaminants,cleantheburner.Seep.28onproceduresforcleaningtheburner&sensor
assembly.
4) Weatherrelatedissues:highwinds,frozenventterminationflap,etc.
5) Installationsataltitudesaroundorover3000feet:Changingdipswitch5and6
ontheleftbankof
dipswitchesonthecomputerboardforFM+modes.Seedipswitchexplanationsonpage21.
6) Makesurealldipswitchesaresetproperlyforthetypeofinstallation.
7) Ifthecauseofthe101errorcodehasbeendeterminedandsolved,resetthecomputerboardto
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cleartheerrorcode(p.26).
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TM‐RE30
Unit#1
MASTER
unit
Unit#2
SLAVEunit
Unit#3
SLAVEunit
Unit#4
SLAVEunit
Figure6