Specifications

TroubleshootingGuide
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20|Page
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e. Testtheheater.
6) Thewatercontrolvalvemayneedtobereplacedifthevalvecannotbecleaned.Contactthe
technicalservicedepartment. 

ERRORCODE661:ABNORMALWATERBYPASSFA ULT
1) Turnoffpowersupply.
2) Checkthatallwireconnectionsaresecureandfreeofburns.Theflowadjustmentvalveislocated
behindthecomputerboardandattachedtothecol dwaterinlet.
3) Checkforwaterleakagefromthevalve.
4) DoavisualinspectionofthePCB.Check
forconnection/breakageofwiresand/orburnmarkson
theboard.PCBmayneedtobereplaced.
5) Thebypassvalvemayneedtobecleaned.Toremove,followthestepsbelow:
a. Removethefourwaterwayclipsoneachsideofthevalves.
b. Slidethevalveupoffthe
inletwaterconnection.
c. Checkbothendsofthevalveforsedimentordebris.Useabrushordescalingsolutionto
removethesediment.
d. Re‐installthevalveandclips.
e. Testtheheater.
6) Theflowadjustmentvalvemayneedtobereplacedifthevalvecannotbecleaned.

ERRORCODE701:PROPORTIONALGASVALVE/COMPUTER
1) Turnoffthepowersupply.
2) Theproportionalvalveislocatedatthebottomofthe
gasvalveassemblywitharedandwhitewires
connectingtoit.
3) Checkallwireconnectionsandmakesuretheyare
secureandfreeofburnsorcuts.
4) InspectthePCBfor
connection/breakageofwires
and/orburnmarksontheboard.
5) Verifythatsupplygaspressureiswithinspecifications.
6) Contactthetechnicalservicedepartmentforfurther
assistance.
ERRORCODE711:HI‐LIMITSWITCH/OVERHEATCUTOFFFUSECOMPROMISED
Thiserrorcodemayappearinsteadofthe“111”or“121”
errorcodes.
1) ChecktheHi‐Limitswitch
a. Visualinspection:Connection/breakageofwires.
b. Normal:Lessthan1Ωbetweenblue&blue
2) OverheatCutoffswitchcompromised
a. Visualinspection:Connection/breakageofwires.
b. Normal:Lessthan1Ωbetween
blue&blue
c. Checkforcontinuity.SeetheTroubleshooting:
GeneralProceduresectionforinstructions.
3) PCBand/orgasvalvefault
a. Drivingcircuitfaultforgassolenoidvalve.Inspect
thePCBconnectionofthegasvalve.
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Figure21
Figure22