Pentair Logix 762 Installer Manual

Installer Manual 255/LOGIX 742-762-764 - Troubleshooting
80 / 92 Ref. MKT-IM-021 / A - 20.02.2019
Hard water
leakage after
regeneration.
Improper regeneration.
Control brine dosage setting and
repeat regeneration.
Leaking of external bypass valve. Replace bypass valve.
O-ring around riser pipe damaged. Replace O-ring.
Incorrect capacity.
Verify appropriate brine amount and
system capacity.
Controller will not
draw brine.
Low water pressure.
Control and adjust setting according to
instructions.
Restricted drain line. Remove restriction.
Injector plugged. Clean injector and screen.
Injector defective. Replace injector and cap.
Valve disc 2 and/or 3 not closed.
Remove foreign matter from the disc.
Check if the disc can close by pushing
on stem.
Replace the disc if needed.
Air check valve prematurely closed.
Put controller momentarily into brine
refill (C8 - cycle).
Replace or repair air check if needed.
Controller will not
regenerate
automatically.
AC transformer or motor are not
connected.
Connect the power.
Defective motor. Replace motor.
Controller
regenerates at
wrong time of day.
Controller set incorrectly.
Correct time setting according to
instructions.
See 6.3.1.5 Regeneration time,
page 47.
Valve will not draw
brine.
Low water pressure.
Set pump to maintain 1.38 bar (20 psi)
at softener.
Restricted drain line. Change drain to remove restriction.
Injector plugged. Clean injector and screen.
Injector defective. Replace injector.
Air check valve closes prematurely on
255 valve or brine pickup tube.
Put controller momentarily into brine
cycle (C2).
Replace or repair air check if needed.
System using
more or less salt
than brine setting.
Foreign matter in valve causing
incorrect flow rates.
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).
Intermittent or
irregular brine
draw.
Low water pressure.
Set pump to maintain 1.38 bar (20 psi)
at softener.
Defective injector. Replace injector.
Issue Cause Reset and recovery

Pentair Logix 762 Specifications

General

Brand	Pentair
Model	Logix 762
Category	Control Unit
Language	English