Honeywell HM506 Humidifier User Manual


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TrueSTEAM Humidification System
19 69-2285EFS—03
TROUBLESHOOTINGTROUBLESHOOTING
No. of
Red
Light
Blinks
Fault Description Auto-
Recoverable?
Steps to Fix
Performed Only by Professional HVAC Technician
4 Heating element
overheated.
No • Followtankcleaningsteps(pages15–17).
• ReassembletankandpresstheGObutton.
• Iffaultreturns,replaceTrueSTEAM.
5 Input voltage insuf-
ficient.
Yes,systemwill
return to “Ready”
if fault no longer
exists in 1 hour.
• Verifythepowercircuitisnotoverloaded.
• Unplugandreplugtheunitintoseeifthefaultreturns.
• Iffaultreturns,unplugunitandremovecover.
• Ensurewiringconnectionsaresecureandattached.
• Iffaultreturns,replacetheTrueSTEAMwithanewone(field
service is not recommended in the event line voltage is lost).
6 Water overflow
sensed.
Yes,systemwill
return to “Ready”
if fault no longer
exists in 1 hour.
• Ensuredrainhoseisnotkinkedorsubmergedinwateratthe
drain. Check functionality of condensate pump if used.
• Checkforwatercomingoutofdrain/overflowline.If
continuouswaterflowispresent,followthecleaningsteps
on pages 15–17.
• PressandholdDRAINbuttontodraintank.
• SethumidistatRHsetpointtoTestmode.
• Iffaultreturns,unplugTrueSTEAM.
• Loosencoverscrewandremovecover.
•
Disconnectwaterlevelsensorwiring,removescreenand
lift snap-hinge clamp.
Remove water sensor assembly.
• Replacewatersensor(#50027998-001).
• Reassemblethesensorassemblyintheunit,replacesnap-
hinge,andreattachandsecurecover.
• Plugunitin,andpressGObutton.
7 HVAC power not
present (monitor this
fault only when DIP 4
and 5 are OFF).
Yes,systemwill
return to “Ready”
if fault no longer
exists in 1 hour.
• Unplugandreplugtheunitintoseeifpowerreturns.
• Ifnot,ensureHVACequipmenthaspower.Checkcircuit
breaker and replace fuse if circuit is tripped.
• UnplugTrueSTEAMandremovecover.
• CheckDIP4positionandverifycorrectwiringbasedonDIP
4 position. See Power Monitoring for more information.
• Plugunitin.
• Iffaultreappears,ensurethecircuitbeingusedhasthe
rating to support the unit. Unplug any additional equipment
pluggedintothiscircuit.Iffaultdisappears,thecircuit
capacity is not properly sized to your unit.
• Iffaultreturns,replaceunit.
8–9 The weld monitor
input is active when
the heater relay is off.
No • Press/holdGOtoclearservicefault.
• Initiateahumiditycall.
• Iffaultreturns,replaceTrueSTEAM.
10–11 The heater relay failed
to turn on.
No • Press/holdGOtoclearservicefault.
• Initiateahumiditycall.
• Iffaultreturns,replaceTrueSTEAM.
M24901
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