Owner manual

32
TROUBLESHOOTING GUIDELINES
TROUBLE SHOOTING
Pleasecheckguidelinesbelow.Foryoursafety,waterheaterserviceshouldbeperformedonlybyaqualiedservicetechnician.
ReadtheGENERALSAFETYINFORMATIONsectionrst.
INTELLI-VENT TROUBLESHOOTING CHART - RESIDENTIAL CONTROL
PROBLEM SOLUTION
Inadequateornoearthground 1.Ensurethewalloutletisproperlygrounded.
 1 sensedbytheIntelli-Vent™
  control. 2.Ensureallgroundconnections/wiresonthe
    waterheateraresecure.
  PowersupplytoIntelli-Vent™ 1.Ensurethewalloutletisproperlywired.
 2 controlhasreversedpolarityora
  highresistancetoearthground. 2.Ensureallinternal120VACwiringconnectionsand
    wiringharnesshavenoreversedwires.120VAC
    “hot”wiremustconnecttotheon/offswitch.
   3.Ensurethewalloutletisproperlygrounded.
4.Ensureallgroundconnections/wiresonthewater
 heateraresecure.
  Pressureswitchcircuitremaining 1.Ensureairpressureswitchcircuitwiringiscorrect
 3 closedformorethan5seconds  andtheairpressureswitchisnotjumpered.
  afterheatingcyclebegins.
Blower does not start. 2.Securepowertowaterheater,checkcontinuityofair
    pressureswitchcontactswithwiresdisconnected.
Service Note:
  Disconnectpower-disconnectone  A Ifpressureswitchcontactsshowcontinuity(closed
  wirefromtheairpressureswitch   circuit)replacethepressureswitch.
  ortheventtemperaturelimit
  switch.Turnpowerbackon-  B Ifpressureswitchcontactsareopenandallwiring
  blowershouldstart.   iscorrect-turnthepowerofffor10-20seconds
     thenonagaintocleartheerrorcode-iftheerror
     codepersistsreplacetheIntelli-Vent™control.
  Pressureswitchcircuitremainsopen 1.Ensuretheblowerisrunning-checkfor120VACto
 4 longerthan5secondsaftertheblower  theblowerwhentheheatingcyclebegins,checkthe
  isenergized.  wiring.Ifthecontroldoesnotenergizetheblower-
    replacetheIntelli-Vent™control.Iftheblowerfailsto
Blower may run continuously in   startwhenenergized-replacetheblowerassembly.
this condition.
   2.Ensuretheairpressureswitchsensingtubeisproperly
    connected-notkinkedordamaged.
   3.Checkcontinuityofventtemperaturelimitswitch-replace
    switchifcontactsremainopenunder160ºF(71°C).
   4.Ensurethecorrectsizeofventpipe(2”,3”,4”)wasused
    perinstallationmanualforventlength.Ensuremaximum
    numberofelbowsorequivalentfeetofventpipehasnot
    exceededmaximumlimits.
   5.Ensuretherearenoobstructionsintheventpipe.
   6.Checkairpressureswitchperformance-checkpressure
    withadigitalmanometer-checkcontinuityofcontacts.
    (seeservicenoteinleftcolumn)Iftheswitchproves
    defective-replacetheairpressureswitchandorthe
    blowerassemblyasrequired.
   7.Ifairpressureswitchperformancetestresultsprove
    theairpressureswitchisworkingproperlyanderror
    code4persists-replacetheIntelli-Vent™control.
  TheIntelli-Vent™controlhasdetected 1.Checkwiringtothehotsurfaceignitor-replaceignitor
 5 anopenignitorcircuit.  assemblyifwiringisdamagedorworn.
Service Note: 2.Checkignitorassemblyplugandthesocketonthe
  Theresistance(ohms)ofahotsurface  Intelli-Vent™bodyforgoodconnection.Replace
  ignitorwillincreaseovertime.Ifthe  ignitorassemblyand/orcontrolifnecessary.
  resistanceatroomtemperatureisnear 
  18.8ohms-considerreplacingtheignitor 3.Checkresistanceofignitoratroomtemperature77ºF
  asapreventativemeasure.  (25°C)attheplugend.Replaceignitorifresistance
    isnotwithin11.5and18.8ohmsatroomtemperature.
   4.Ifresultsfromtheabovetestsweregoodanderror
    code5persists-replacetheIntelli-Vent™control.
A B C
A B C
A B C
A B C
A B C
# LED STATUS
WATER HEATER CONTROL