12
If the power to the solenoid valve coil
is correct, the following symptoms
indicate that cleaning the solenoid
vavle is required:
• Sluggish valve operation
• Excessive noise
• Constant water spray
• Streaming water
To clean the solenoid valve:
1. Turn the power to the furnace OFF.
2. Turn the humidistat to the OFF
position
3. Turn off the water supply at the
saddle valve
4. Disconnect the power and water
lines from the humidifier
5. Remove the humidifier from the
duct.
6. Remove the drip sleeve from the
nozzle assembly.
7. Using a 3/4” wrench, remove the
nozzle adapter.
8. Remove the solenoid valve
assembly from the case using a
Phillips head screwdriver.
9. Remove the brass nipple from the
OUT port of the valve body.
Remove the street elbow and brass
adapter from the IN port of the
valve.
10. Remove the filter from inside the
inlet brass adapter using a small
nail or paperclip.
Note: Be careful not to
puncture the filter.
11. Remove the coil from the assembly
by turning the valve body counter
clockwise.
12. Clean and remove all particulates
from the brass fittings, filter,
plunger/spring assembly and
orifices in the valve body using a
50/50 solution of white vinegar
and water or a liquid humidifier
cleaner.
13. Reassemble the parts, paying
careful attention to the diagram
below for the correct placement.
14. After completing the assembly,
operate the unit to be sure it is
functioning properly.
Maintenance
NOTE: Teflon tape may be used on the threads for
re-assembly, however, do not use pipe dope, as it
will clog the nozzle assembly.
Coil
IN
OUT
O-Ring
(Rubber)
Valve
Body
(Brass)
Brass Nipple (To Nozzle Adapter)
Street
Elbow
Brass
Adapter
Filter
To Water Tubing
Plunger/Spring
Assembly
