TrueSTEAM Humidification System
19
69-2285EFS—03
trouBleshootInG
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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
