Installation guide

Humidification System
 19 69-2307—01
The humidifier has internal system diagnostics that monitor system operation, maintenance sched-
ules, and faults. If a system fault is detected, the system will attempt to recover itself up to five
timesina24hourperiod.Ifunabletorecoverinthattime,theredCallServiceLEDlightwillacti-
vate.
If the humidifier Call Service light is red, a system fault has occurred from which the humidifier
can not recover by itself. The table below shows the possible faults, along with steps to fix the
humidifier.
IftheredCallServiceLEDlightison,press/releasetheRESETbutton.TheredCallServiceLED
light will begin blinking in a series that indicates what fault occurred. Refer to the table below
for the fault signified by the number of blinks that occur. To clear the fault, press and hold the
RESETbuttonfor5seconds.
Press/holdtheEMPTYbuttontocleartheServiceTimerlight(i.e.thePressEmptybutton).
Press/releasetheEMPTYbuttontodrainthetank.
No. of
Red
Light
Blinks
Fault Description Auto-
Recoverable?
Steps to Fix
To be Performed by Professional HVAC Technician Only
1 Water/Heater temper-
ature sensor failed.
Yes,systemwill
return to “Ready”
if fault no longer
exists in 1 hour.
• Unplugthehumidifierandremovecover.
• Checkwatersensorconnectiontoelectronicboard.
• Reattachcoverandplugthehumidifierin.
• Iffaultreappears,followthecleaningstepsonpages23–25.
• ReassembletankandpresstheRESETbutton.
• Iffaultreturns,replacewithapplicablewattageheating
element.
2 Water sensors failed. Yes,systemwill
return to “Ready”
if fault no longer
exists in 1 hour.
Will attempt to
reset itself 5 times
in 24 hours.
• Unplugthehumidifierandremovecover.
• Disconnect water level sensor wiring, remove screen and
lift snap-hinge clamp.
Remove water sensor assembly.
•Cleanwatersensorprobesusingwarmsoapywatersothat
the metal is exposed.
•Reassemblethesensorassemblyintheunit,reattachand
secure cover.
•PlugunitbackinandpresstheRESETbutton.
•Iffaultreappears,replacesensorassembly.
3 Failure to fill tank
with water.
Yes,systemwill
return to “Ready”
if fault no longer
exists in 1 hour.
•Ensureinletwaterison.
•Checkforleaksaroundthetanksealandsolenoid.
•Turnoffwatersupplyandreplacein-linewaterfilter.
•Press/holdRESETbuttonuntiltheredCallServicelight
turns off.
•Iftankstillfailstofill,presstheEMPTYbutton(ifunitfailsto
drain, unplug unit and make sure water in tank is cool).
• Followtankcleaninginstructionsonpage23.Ensureyou
have a firm grip of the tank prior to releasing the tank,
especially if water is present.
• Clearanyexcessdebrisfromthetank’sbottomorificetothe
solenoid.
• Reassembletankandplugunitbackin.PresstheRESET
button.
• Ifwaterstillfailstoflushintothetank,replacethesolenoid
valve.
M24901
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