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DISpLAy pANEL
TABLE 1 – Display panel
Indicator
Light
Function
Off
Humidifier is turned off or not receiving power .
Solid
Green
Humidifier is turned on .
Flashing
Green
Humidifier is preparing to turn on . Occurs if power is
disconnected, then restored with switch ON . Flashes for
one minute .
Solid
Green
Normal Operation . Fill valve is energized allowing water
to flow into canister via fill cup . (Does not illuminate when
tempering water during drain cycle .)
Flashing
Green
Fill and Drain Valves are pulsing to dislodge mineral build-up
in canister . Flashes 10 times in four seconds .
Solid Red
Fault Mode . Indicates canister needs water but cannot fill .
Humidifier shuts down . (Occurs if high water probe does not
detect water after fill valve is energized for 40 minutes .)
Solid
Green
Normal Operation . Humidistat is calling for steam and
humidifier is operating .
Solid
yellow
Humidifier is operating but is not delivering steam at rated
capacity . Occurs if humidifier has operated for 168 hours
at less than rated capacity due to low water conductivity .
Light will turn green once water conductivity increases and
humidifier is delivering rated capacity .
Flashing
Green
Humidifier is preparing to drain . (Fill valve is open
tempering water in canister .) Occurs when humidifier
is turned off, at end of season drain (72 hours with no
operation) and during forced drain down (168 hours of
operation with no drain activity .)
Fill and Drain Valves are pulsing to dislodge mineral build-up
in canister . Flashes 10 times in four seconds .
Solid
Green
Drain valve is energized and open, draining canister . Valve
remains energized for four minutes .
Indicates end of season shut-down . Occurs if humidifier
does not receive call for humidity in 72 hours . Light remains
on for 24 hours .
Flashing
Red
Canister has reached the end of its life and needs to be
replaced . Occurs after humidifier has operated for at least
168 hours and for an additional 24 hours at a current level
below 75% of the maximum operating current . Humidifier
continues to operate, but at reduced capacity .
Solid Red
Operational problem with humidifier . Humidifier shuts
down . Occurs when unit detects over-current which can be
caused by failure to drain or other system failures . Call your
heating and air conditioning dealer for service .
HUMIDIFIER CONTROL & OpERATING INSTRUCTIONS
The control provided with your humidifier is mounted either in your return
air duct or on a wall in the living space . The control has a set of contacts
which close when the RH is below the set point . That signal tells the
humidifier to energize the electrodes in the canister to generate steam,
provided the indoor unit blower is on . If the blower activation relay is
installed, a call for humidity will turn on the indoor unit blower .
It is important to anticipate changes in outdoor temperature and adjust
the setting accordingly to avoid excessive condensation when outdoor
temperature is low . For example, with an outdoor temperature of 20°F the
correct setting will be 35% . If the temperature is expected to fall to 0°F
that evening, then merely reduce the setting to 25% several hours prior to
the temperature change .
See
Table 2
for the recommended settings . These settings, which are
based on years of research, represent a compromise between humidity
levels that would be most desirable for comfort and humidity levels that
are suitable for protection of your home and to avoid condensation on
your windows . For example, a wintertime indoor humidity of 50% may be
considered ideal for comfort, but unfortunately, it probably would result
in condensation, which can cause damage to your home . Observing the
recommended humidity levels on your Humidifier Control is an important
safeguard . Condensation of water on the inside surface of windows in
the form of fogging or frost is usually an indication of too much humidity .
This same condensation can occur in other areas in your home, possibly
resulting in damage .
TABLE 2 – Outdoor Temperature/Indoor Relative Humidity
Outside Temperature
Recommended RH
+40°F
45%
+30°F
40%
+20°F
35%
+10°F
30%
0°F
25%
–10°F
20%
–20°F
15%
