Pentair Autotrol 255 Installer Manual page 80

Installer Manual 255/LOGIX 742-762-764 - Troubleshooting
Issue
Improper regeneration.
Hard water
Leaking of external bypass valve.
leakage after
O-ring around riser pipe damaged.
regeneration.
Incorrect capacity.
Low water pressure.
Restricted drain line.
Injector plugged.
Injector defective.
Controller will not
draw brine.
Valve disc 2 and/or 3 not closed.
Air check valve prematurely closed.
AC transformer or motor are not
Controller will not
connected.
regenerate
automatically.
Defective motor.
Controller
regenerates at Controller set incorrectly.
wrong time of day.
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.
80 / 92
Cause Reset and recovery
Control brine dosage setting and
repeat regeneration.
Replace bypass valve.
Replace O-ring.
Verify appropriate brine amount and
system capacity.
Control and adjust setting according to
instructions.
Remove restriction.
Clean injector and screen.
Replace injector and cap.
Remove foreign matter from the disc.
Check if the disc can close by pushing
on stem.
Replace the disc if needed.
Put controller momentarily into brine
refill (C8 - cycle).
Replace or repair air check if needed.
Connect the power.
Replace motor.
Correct time setting according to
instructions.
See 6.3.1.5 Regeneration time,
page 47.
Set pump to maintain 1.38 bar (20 psi)
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 1.38 bar (20 psi)
at softener.
Replace injector.
Ref. MKT-IM-021 / A - 20.02.2019