Check Filter Indicator
The ability of any humidifier to efficiently supply humidity output relies heavily on the
condition of the filter. As the filter loads with impurities it gradually loses its wicking
capability. When this happens, moisture output is reduced and the humidifier has to work
longer to satisfy the selected setting. This humidifier has a check filter reminder timed to
appear after 720 hours of operation. When the Check Filter (CF) message is displayed,
disconnect the power cord and check the condition of the filter. If a build-up of deposits or
severe discoloration is evident replace the filter to restore maximum efficiency. The CF
message is reset when the humidifier is plugged back in.
If your humidifier is equipped with a Digital Humidifier Control with Water
Panel change indicator, after replacing the Water Panel, turn the control
knob to the "Test/Reset" position until the "Humidifier On" light blinks to
reset its timer. (Blower must be operating and HVAC calling for heat.) Be sure
to turn the control knob back to it's original setting. If the "Humidifier On"
light continues to blink, your humidifier is in Test mode. DO NOT LEAVE THE
CONTROL IN TEST MODE OR HUMIDIFIER WILL NOT OPERATE.
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