Specifications

TroubleshootingGuide
8|Page
5.TROUBLESHOOTING
5.1PRELIMINARY
CHECKLIST
Checkallofthesebasicitemsbeforeproceedingontoanyothersection:
GAS/WATER/ELECTRIC:
o Thegassupplyvalveshouldbefullyopen.
o Verifythecorrectgastypeisbeingused,NGorLP.
o Thewatersupplyvalveshouldbefullyopen.
o Theunitshouldbeconnected
toa120VAC60Hzpowersupply.Thiscanbeverifiedby
observingthecomputerboard3digitLEDdisplay.Ifitisnotlit,thecomputerboardis
notbeingpowered.ChecktoseeiftheON/OFFswitchbelowthefuseboxissettothe
onposition,or
ifthefuseinthefuseboxisblown.
REMOTE:Ifyouareusingaremotecontroller,theremote’spowerbuttonmustbeturnedon.
HIGHALTITUDE:Isyourlocationatanaltitudeofover3000feet?Thismaycausealack ofair.
Seethehighaltitude
procedureintheTroubleshootingProceduressection.
HARDWATER:Whatisthehardnessofthewater?Asoftenerisalwaysrecommended,butif
thewaterisabove7grainsofhardnessor70140ppm,onemustbeinstalled.Ifthereisno
watersoftenerinstalled,existinginstallationswillgraduallyaccumulate
scalebuilduponthe
heatexchangerandcausealeak.Heatexchangerleaksduetohardwaterscalearenotcovered
underthewarranty.
NEWINSTALLATIONS:Isthisinstallationafewyearsoldorbrandnew?
o Aunitthathasworkedproperlyforawhilebutisnowstruggling
mayhavebecome
scaleduporcontainsadirtyburner.
o Anewinstallationismostlikelyinstalledorplumbedincorrectly.
EXTERNALPROBLEM:Testwhethertheproblemiswithintheunitorexternaltotheunit(i.e.in
theplumbingsystem)byattemptingtorunhotwaterlocallythrough
thepressurereliefvalve
(PRV).
o Doestheheaterigniteandremainrunningproperly? Ordoestheheatershutdowninto
anerrorcode?IfitrunsfinethroughthePRVtheplumbingsystemisatfault.
NEXTSTEP:Finally,checktoseeiftheunithasanerrorcode.
Theerrorcodewillbedisplayedonthe3
digitsevensegmentLEDPCBatthecenteroftheunit.(Seefigure4)
Ifitisdisplayinganerrorcode,proceedtotheErrorCodessection(p.13).
Ifthereisnoerrorcode,proceedtotheGeneralProblems
section(p.9).