Honeywell HM512W1005 - Page 33

OPERATION
AND SERVICE
TrueSTEAMHumidicationSystem69-2285EF—01
31
No. of
Service LED
Blinks
Fault Description Auto-Recoverable? Steps to Fix
(Performed Only By Professional HVAC Technician)
4 Heating element
overheated.
No Followthetankcleaningsteps.1. See “Manual Cleaning Cycle”
on page 24.
ReassembletankandpresstheGobuttontoreset.2.
Ifthefaultreturns,replaceTrueSTEAM.3.
5 Input voltage
insufcient.
Yes,systemwill
returnto“Ready”
if fault no longer
existsinonehour.
Verifytheelectricalcircuitisnotoverloaded.1.
UnplugandreplugTrueSTEAMintoseeifthefaultreturns.2.
Ifthefaultreturns,unplugTrueSTEAMandremovecover.3.
Ensurewiringconnectionsaresecureandattached.4.
Ifthefaultreturns,replaceTrueSTEAM.(Fieldserviceisnot5.
recommendediflinevoltageislost.)
6 Wateroverow
sensed.
Yes,systemwill
returnto“Ready”
if fault no longer
existsinonehour.
Ensuredrainhoseisnotkinkedorsubmergedinwateratthe1.
drain.Checkfunctionalityofcondensatepump,ifused.
Checkforwatercomingoutofthedrain/overowline.If2.
continuouswaterowispresent,followthetankcleaning
steps.See “Manual Cleaning Cycle” on page 24.
Aftercleaning,ifthefaultreturns,unplugTrueSTEAM.3.
Loosencoverscrewandremovecover.4.
Disconnectwaterlevelsensorwiring,removescreenandlift5.
snap-hingeclamp.
Removewatersensorassembly.6.
Replacewatersensor(#50027998-001).7.
Reassemblethesensorassemblyintheunit.Replacesnap-8.
hinge,andre-attachandsecurecover.
PlugTrueSTEAMbackinandpresstheGobuttontoreset.9.
7 HVACpower
notpresent.
Yes,systemwill
returnto“Ready”
if fault no longer
existsinonehour.
UnplugandreplugTrueSTEAMintoseeifpowerreturns.1.
Ifpowerdoesnotreturn,ensureHVACequipmenthaspower.2.
Checkcircuitbreakerorreplacefuseifcircuitistripped.
UnplugTrueSTEAMandremovecover.3.
CheckDIP4positionandverifycorrectwiringbasedonDIP44.
position.See “Make Power Monitoring Decision” on page 14
for more information.
PluginTrueSTEAMandpresstheGobutton.5.
If the fault reappears, ensure the circuit being used has the 6.
ratingtosupporttheTrueSTEAM.Unpluganyadditional
equipmentpluggedintothiscircuit.Iffaultdisappears,the
circuitcapacityisnotproperlysizedtoyourunit.
Ifthefaultreturns,replaceTrueSTEAM.7.
8 Theweldmonitor
inputisactivewhen
theheaterrelayisoff.
No PressandholdtheGobuttontoclearthefault.1.
Initiateahumiditycall.2.
Ifthefaultreturns,replaceTrueSTEAM.3.