Installation Guide
69-2307—01
20
TRoubleshooTIng
No. of
Red
Light
Blinks
Fault Description
Auto-
Recoverable?
Steps to Fix
To be Performed by Professional HVAC Technician Only
4
Heating element
overheated.
No
• Follow tank cleaning steps (pages 23–25).
• Reassemble tank and press the RESET button.
• If fault returns, replace with applicable humidifier.
5
Input voltage insuf-
ficient.
Yes, system will
return to “Ready”
if fault no longer
exists in 1 hour.
• 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 humidifier 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 23–25.
• Press EMPTY button to drain tank.
• Set humidistat RH setpoint to Test mode.
• If fault returns, unplug the humidifier.
• Loosen cover screw and remove cover.
• Disconnect water level sensor wiring and lift snap-hinge clamp
to remove water sensor assembly. See image on page 19.
• Clean probes using warm soapy water so that the metal is
exposed.
• Reassemble the sensor assembly in the unit, reattach and
secure cover.
• Plug unit in, and press RESET button.
• If fault reappears, replace water sensor assembly and/or
solenoid valve.
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 the humidifier and remove cover.
• Ensure DIP 4 is ON and reattach cover.
• 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.
