9
TROUBLESHOOTING
Number of
“Service” red
light blinks
Description
Possible Cause
Corrective Action
2
Water level sensors
failed to detect tank
water
Scaling on the sensor
Replace #1 sediment filter and
#2 RO filter. See steam
humidifier manual trouble-
shooting section for specific
humidifier steps
3
Failed to fill steam
humidifier tank
Expired #1 and #2 water fil-
ters
Missing flow control in drain
line
Replace flow control (provided
with 50046086-001 / 011)
Storage tank air charge is
less than 5-7 psi
Drain the storage tank. Check
tank air pressure and, if low,
pressurize to 6 psi
4
Heating element
overheated
Scaling on element
See steam humidifier manual
for cleaning steps
6
Water overflow
sensed in tank
Heavy sediment in tank
13
Tank failed to drain
Blinking “Cleaning
required” light on
steam humidifier
“Water hammer” or
leaks at initial instal-
lation (Model
50045947-002 / 012
only)
Dry filters may have higher
potential for this as water
works through the dry filter
initially
Fill the filters with water before
connecting the RO outlet to
the humidifier, letting the water
run into the drain or a bucket.
Once air is out of the RO out-
let line, turn off the water and
connect RO outlet to humidifi-
er. Turn water back on
The following table refers to the steam humidifier’s fault detection feature.
