Pentair Autotrol 255 Logix 740-760 Installer Manual page 65

Issue
Low water pressure.
Restricted drain line.
Valve will not draw Injector plugged.
brine.
Injector defective.
Air check valve closes prematurely on
255 valve or brine pickup tube.
System using
Foreign matter in valve causing
more or less salt
incorrect flow rates.
than brine setting.
Intermittent or
Low water pressure.
irregular brine
draw.
Defective injector.
No brine in brine tank.
No conditioned Injector plugged.
water after
regeneration.
Air check valve closes prematurely.
Backwashes or Incorrect drain control used.
purges at
Foreign matter affecting valve
excessively low or
operation.
high rate.
Bypass valve in bypass.
No water flow Meter probe disconnected or not fully
display when connected to meter housing.
water is flowing on
760 controller.
Restricted meter turbine rotation due
to foreign matter in meter.
Ref. MKT-IM-001 / C - 08.10.2019
Installer Manual 255-LOGIX 740-760 - Troubleshooting
Cause Reset and recovery
Set pump to maintain 1.4 bar at
softener.
Change drain to remove restriction.
Clean injector and screen.
Replace injector.
Put controller momentarily into brine
cycle (C2).
Replace or repair air check if needed.
Remove brine controller and flush out
foreign matter. Then advance
controller to brine cycle (C2) to clean
valve (after so doing controller goes to
"2nd fast rinse" cycle (C7) to remove
any brine from tank).
Set pump to maintain 1.4 bar at
softener.
Replace injector.
Add brine to brine tank.
Clean injector and screen.
Put controller momentarily into brine
cycle (C2).
Replace or repair air check if needed.
Replace with correct size controller.
Remove drain control and clean ball
and seat.
Shift bypass valve to non-bypass
position.
Fully insert probe into meter housing.
Remove meter housing, free up
turbine and flush with clean water.
Turbine should spin freely. If not,
replace meter.
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