HE225A,B AND HE265A,B BYPASS FLOW-THROUGH HUMIDIFIER
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8. Check the humidifier pad and if excessive mineral
deposits are present, replace with a new antimicrobial
pad.
9. Disconnect the tube from the drain fitting on the bottom
of the humidifier housing.
10. Clean the drain fitting, if necessary.
11. Bend the drain tube to loosen any mineral deposits.
12. Flush the drain tube with pressurized water (a running
tap) to clean the tube.
13. Reattach the drain tube to the drain fitting.
14. Slide the humidifier pad back into the frame.
IMPORTANT
To maintain the antimicrobial properties of the
humidifier, use only a Honeywell HC22E or HC26E
Antimicrobial Pad. See Table 8 List of Replacement
Parts for appropriate pad. Be sure the marked side
of the antimicrobial humidifier pad is facing up for
proper performance.
15. Snap the water nozzle back on the tray.
16. Reattach the tray to the frame.
17. Place the humidifier pad assembly in the humidifier
housing and press until the assembly is completely
seated. Be careful not to pinch or kink the water feed
tube.
18. Replace the humidifier cover.
19. Verify the humidifier operation by following the steps in
the Checkout Procedure section.

End of Humidification Season

At the end of the heating season, follow steps 1 through 18
from the Every 1 To 3 Months section to clean the humidifier
and shut if off.
IMPORTANT
Be sure the humidifier power is off.

Beginning of Humidification Season

Refer to the Checkout Procedure section to complete the
humidifier startup.

Vacation

When leaving on vacation, turn off the humidifier water supply
and the humidity control. When returning from vacation, turn
on the humidifier water supply and reset the humidity control
to restart the humidifier.
CHECKOUT PROCEDURE
After winter startup or servicing, use the following procedure
to check the humidifier operation:
1. Turn on the humidifier power and water supply.
2. Turn the Convertible Humidity Control to the highest
setting, or place the H1008A Automatic Humidity
Control in the Test position and set the thermostat to
10°F (6°C) above the room temperature.
3. Observe that water is flowing out of the drain hose.
NOTE: The furnace blower must be on for the
humidifier to operate.
4. Reset the thermostat and Convertible Humidity Control
to a comfortable setting, or the H1008A Automatic
Humidity Control to the desired frost factor setting, for
automatic operation.
TROUBLESHOOTING
Refer to Table 7 for troubleshooting procedures.
Problem What To Look For What To Do
Low humidity Furnace blower not operating • Reset circuit breaker or check for blown fuse.
• Check that the furnace power is on.
• Check all external wiring connections.
• Check the humidity control setting.
• Call a professional heating contractor.
Rapid air changes. Drafts (cold air
is dry and is an added load to the
humidifier).
• Keep doors and windows closed.
• Close fireplace damper when not in use.
• Keep exhaust fan running time to a minimum.
• Seal around doors and windows.
High humidity Condensation on walls. • Turn humidity control and water off until condensation is
completely evaporated.
Heavy condensation on windows. • Turn humidity control down low enough to eliminate
condensation caused by moisture from bathing, mopping,
cooking, etc. If moisture persists, more ventilation is needed.
Table 7. Troubleshooting Procedures.