AutoFlo S2020 - Manual (Page 7)

7
A.
G.
B.
C.
D.
E.
F.
The green "Power" light does not blink off and on.
1. The S2000 is not connected to an active 120
VAC 15 Amp power source. (S2020, 240 VAC,
10 AMP).
2. Call the Technical Support Hotline.
The "HEATER" LED does not illuminate.
1. The humidistat is not closed, calling for humidity or the
humidistat is wired incorrectly.
2. The unit is in the maintenance cycle.
The HVAC Blower will not operate, but the "Blower"
LED is on.
1. The blower "Field" wiring and/or interlock circuitry is
incorrect.
2. The HVAC electric power is disconnected.
3.The humidifier internal "Blower" relay is defective. Call
the Technical Support Hotline.
4. The HVAC Blower motor has failed.
The HVAC Blower will not operate and the "Blower"
LED is not on.
1. The water pan temperature has not reached a high enough
temperature to activate the "Blower" relay, about 170
degrees Fahrenheit. This takes several minutes after the
"HEATER" LED is illuminated. Depending on the water
temperature and the surrounding condition, this may take
up to 12 minutes. If the problem continues, the heater
element may be defective, the thermistor temperature probe
may be defective. Contact the Technical Support Hotline.
Red Service Light (error #1) is on constantly.
THERMISTOR ...This is an indication that the temperature
probe is open or shorted to ground. May also indicate the
probe has detected a pan temperature below 32 degrees F.
Or in excess of 230 degrees F., resulting in a total shutdown.
Try to reset the unit by unplugging the cord and
reconnecting, or call Technical Support.
Red Service Light (error #2) is on constantly.
WATER ...This is an indication that the water fill time has
been exceeded. The water level did not reach the probe tip
in the given amount of time. It may also indicate an
unsuccessful drain cycle.
1. The water line is shut off at the saddle valve.
2. The water line is crimped or pinched.
3.The water valve inlet screen is plugged. Remove the
water line from the unit and check the screen found inside
the inlet side of the valve.
4.Unit is connected to a water source which is distilled,
over-filtered, de-mineralized, or from a reverse osmosis
system. Minimum 25 ppm water conductivity is
required.
*The unit supply water must contain dissolved
solids in the water, or the processor will not be able to
detect the water level.
5.The water valve may be defective and must be replaced
See replacement parts.
6. The drain valve is unplugged or defective.
7. Debris is clogging the drain valve or drain line.
8. Reset the unit by unplugging the power cord and re-
connecting.
Both Red Service Lights (error #3) are on.
HEATER FAILURE...This is an indication that the water
temperature is not increasing or reaching the boiling
point.
1. Faulty heater element or faulty wire connection.
2. This can happen if the unit is operated without water
in the pan as a result of a water level probe malfunction,
due to lack of maintenance. The pan boils dry and over-
heats the water pan. If this condition occurs, call the
Technical Support Hotline.
3. The unit has operated for 45 minutes without a request
for water, due to a leaking water fill valve, which is filling
the tank continuously.
If the humidifier seems to operate in a random manner
that doesn't seem to fit any of the pre-described
conditions, check the following:
1. Check to make sure that the wires used to connect the
humidifier to the humidistat are separate wires and not
part of a multi-wire bundle used to hook up the furnace
thermostat or any other device. The associated close
wires may create an induced voltage in the humidistat
wiring.
2. Make sure that the water level probe and plastic
insulator are clean and free of mineral build-up. It may
become electrically conductive to ground, sensing a false
indication that the water level is correct.
3. If the electric solenoid valve makes a loud noise when it
closes, install an optional water hammer arrester to absorb
the spike. Frequent or erratic water fill cycles can be due
to air turbulence, when mounted in the supply air plenum.
4. The water probe uses the natural conductivity of the
water, to determine the proper water level in the reservoir.
Water that has been de-mineralized or over treated may
not allow the unit to function properly. Minimum 25 ppm
of total dissolved solids must be present in the water.
Add approximately 1 tablespoon of salt to the tank, to
temporarily remedy this problem.
5. These steam humidifiers must be connected to
dedicated outlets of the proper current and voltage ratings.
The use of extension cords is not recommended.
DO NOT cut off the grounded plug and/or
hard wire this humidifier to line voltage.
This will void the warranty.
H.
SERVICE INDICATORS