TROUBLESHOOTING continued
255/440i Troubleshooting
Problem Cause Correction
Control will not draw brine. Low water pressure. Set pump to maintain 20 psi at softener.
Restricted drain line. Change drain to remove restriction.
Injector plugged. Clean injector and screen.
Injector defective. Replace injector. (Contact dealer.)
Air check valve closes prematurely. Put control momentarily into brine/slow rinse.
Replace or repair air check if needed. (Contact
dealer.)
System using more or
less salt than regenerant
setting.
Foreign matter in controller causing
incorrect flow rates.
Remove brine control and flush out foreign matter.
Manually position control to brine/slow rinse to
clean controller (after so doing position control to
"purge” to remove brine from tank).
Intermittent or irregular
brine draw.
Low water pressure. Set pump to maintain 20 psi at softener.
Defective injector. Replace injector. (Contact dealer.)
No conditioned water after
regeneration.
No salt in brine tank. Add salt to brine tank.
Injector plugged. Clean injector and screen.
Air check valve closes prematurely. Put control momentarily into brine/slow rinse.
Replace or repair air check if needed. (Contact
dealer.)
Control backwashes or
purges at excessively low or
high rate.
Incorrect drain controller used. Replace with correct size controller. (Contact
dealer.)
Foreign matter affecting controller
operation.
Remove drain controller and clean ball and seat.
255/460i/460TC Troubleshooting
Problem Cause Correction
No water flow display when
water is flowing.
Bypass valve in bypass. Shift bypass valve to not-in-bypass position.
Meter probe disconnected or not fully
connected to meter housing.
Fully insert probe into meter housing.
Restricted meter turbine rotation due to
foreign material in meter !
Remove meter housing, free up turbine and flush
with clean water. Turbine should spin freely. If not,
replace meter. (Contact dealer.)
Defective meter probe. Replace meter cable (no meter cable for the 460TC)
(Contact dealer.)
Continuous regeneration.
Camshaft does not stop at
the end of regeneration.
Misaligned optical sensor. Replace optical sensor (no sensor for the 460TC).
(Contact dealer.)
Run out of soft water
between regenerations.
Improper regeneration. Repeat regeneration, making certain that correct
salt dosage is used.
Incorrect salt setting. Set salt control to proper level. See salt setting
chart.
Incorrect hardness or capacity settings. Set to correct values. See Programming section.
Water hardness has increased. Set hardness or days to new value. See
Programming section.
Restricted meter turbine rotation due to
foreign material in meter !
Remove meter housing, free up turbine and flush
with clean water. Turbine should spin freely; if not,
replace meter. (Contact dealer.)
AUTOTROL
®
255 Valve/400 Series Service Manual • 15
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