Aprilaire 800 - Manual (Page 7)

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TEST/RESET
The Test/Reset feature allows the humidifier operation to be checked even
if there is no call for humidity. See “Check the Humidifier Operation” on
page 13 .
ADDITIONAL INFORMATION – AUTOMATIC MODE
Your humidifier is a precision system that will accurately maintain the
humidity in your home. For every 2°F change in outdoor temperature, the
Digital Humidifier Control will automatically adjust the indoor humidity by
1% .
The Digital Humidifier Control will accurately control the humidity in your
home to a maximum of 45%.
The humidity Values in
Table 3 are targets based on outdoor temperature
and the Digital Humidifier Control setting. The actual humidity may vary due
to conditions in the home (cooking, showering, etc.).
TABLE 3 – % Relative Humidity Guide
Outdoor Temperature (°F)
-10°F 0°F 10°F 20°F 30°F 40°F
1 10% 10% 10% 15% 20% 25%
2 10% 10% 15% 20% 25% 30%
3 10% 15% 20% 25% 30% 35%
4 15% 20% 25% 30% 35% 40%
5 20% 25% 30% 35% 40% 45%
6 25% 30% 35% 40% 45% 45%
7 30% 35% 40% 45% 45% 45%
Dial
Setting
Relative
Humidity
(%)
Set the knob to “Test/Reset”, make sure that the water saddle valve is
open and that the humidifier is on. The HVAC fan must be running for the
humidifier to function. The humidifier will only operate for 1 minute in test
mode. Reduce the Humidifier Control setting to the recommended inside
humidity, depending on the outside temperature.
DO NOT LEAVE IN TEST
MODE AS HUMIDIFIER wILL NOT OpERATE.
CHECk THE HUMIDIFIER OpERATION
DIGITAL HUMIDIFIER CONTROL
TABLE 4 – Operation Guide
Condition Solution
Condensation on windows. Reduce the setting on the control dial by
1 increment .
Lack of humidity. Increase the setting on the control dial by
1 increment .
Humidifier does not turn on . Turn dial to “Test/Reset”. Make certain
HVAC blower is operating. If unit still does
not operate, consult a heating contractor.
Humidifier won’t shut off. Turn control dial to “Off”. If unit continues
to produce steam, turn off the humidifier
and consult a heating contractor.
Test mode . System operation is checked by setting
the knob to “Test/Reset”. Make certain
HVAC blower is operating. Humidifier will
operate for one minute .
Red “Call Dealer for Service”
light flashes (
Figure 2).
Note the error code on the display (E1,
E2, E3 or E4) and call your heating and air
conditioning dealer .