Troubleshooting - A.O. Smith Pro AOW-S400 Owner's Manual

TROUBLESHOOTING

16
Problem
No Soft
Water After
Regeneration
No Soft Water
No Flow Is
Indicated When
Water Is Flowing
Flow Indicated
When Water Is
Not Being Used
No Read-Out In
Display
NEED HELP? GIVE US A CALL 833.232.9712
Possible Cause
No salt in brine cabinet.
Sediment in brine cabinet has plugged
the brine line and air check/draw tube.
Flow control is plugged.
Drain line is pinched, frozen, or
restricted.
Clogged injector assembly.
Salt bridge has formed due to high
humidity or the wrong kind of salt.
The Bypass Valve is in the Bypass
Position.
Appliance is plumbed backwards.
Extended power outage.
Water hardness has increased.
Not metering water.
The Bypass Valve is in the Bypass
position.
Appliance is plumbed backwards.
Sensor not receiving signal from
magnet on turbine.
Turbine is jammed.
The household plumbing system has
a leak.
Electric cord is unplugged.
No electric power at outlet.
Defective transformer.
Defective circuit board.
Solution
Add salt.
Remove the brine line and flush clean.
Remove the air check/draw tube and
flush with clean water. Clean injector
assembly. Clean any sediment from
brine cabinet.
Remove brine piston housing and clear
debris from the flow control.
Straighten, thaw, or unclog the drain
line.
Remove injector cap and clean nozzle
and throat with a wooden toothpick.
Replace entire assembly if throat
removed.
Test with a blunt object like a broom
handle. Push the handle into the salt
to dislodge the salt bridge, or use hot
water around the inside perimeter to
loosen salt.
Place the Bypass Valve in the Service
position.
Check that appliance is plumbed
correctly.
Reset the time of day and regenerate
the unit.
Re-test the water and re-enter a new
setting number.
Flow should be indicated with water
usage. If no flow, see below.
Place the Bypass Valve in the Service
position.
Check that appliance is plumbed
correctly.
Remove sensor from bypass housing.
Test with magnet on either flat side
of sensor. If flow is indicated, check
turbine. If no flow, replace sensor.
Remove Bypass Valve and clear debris
from turbine.
Repair the leak.
Plug in the transformer.
Check power source. Make sure outlet
is not controlled by a switch.
Test with voltmeter for 12 VAC at
control. If less than 10 VAC replace the
transformer.
With 12 VAC present at controller,
replace the controller.