Pentair Logix 762 Installer Manual

Installer Manual 255/LOGIX 742-762-764 - Troubleshooting
Ref. MKT-IM-021 / A - 20.02.2019 81 / 92
No conditioned
water after
regeneration.
No brine in brine tank. Add brine to brine tank.
Injector plugged. Clean injector and screen.
Air check valve closes prematurely.
Put controller momentarily into brine
cycle (C2).
Replace or repair air check if needed.
Backwashes or
purges at
excessively low or
high rate.
Incorrect drain control used. Replace with correct size controller.
Foreign matter affecting valve
operation.
Remove drain control and clean ball
and seat.
No water flow
display when
water is flowing on
760 controller.
Bypass valve in bypass.
Shift bypass valve to non-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 matter in meter.
Remove meter housing, free up
turbine and flush with clean water.
Turbine should spin freely. If not,
replace meter.
Run out of
conditioned water
between
regenerations.
Improper regeneration.
Control brine dosage set and repeat
regeneration.
Incorrect brine setting.
Set P6 to proper level.
See 6.3.1.9 Amount of salt used per
regeneration, page 48.
Incorrect hardness or capacity
settings.
Set to correct values.
See 6.3. Basic programming, page 46.
Water hardness has increased.
Set hardness to new value.
See 6.3.1.11 Hardness (762 controller
only), page 48.
Restricted meter turbine rotation due
to foreign matter in meter.
Remove meter housing, free up
turbine and flush with clean water.
Turbine should spin freely. If not,
replace meter.
Brine tank
overflow.
Brine valve disc 1 being held open by
foreign matter.
Manually operate valve stem to flush
away obstruction.
Valve disc 2 not closed during brine
draw causing brine refill.
Flush out foreign matter holding disc
open by manually operating valve
stem.
Air leak in brine line to air check.
Check all connections in brine line for
any leaks.
Improper drain control for injector.
Use of small drain control with larger
injector will reduce draw rates.
Drain control clogged with resin or
other debris.
Clean drain control.
Issue Cause Reset and recovery

Pentair Logix 762 Specifications

General

Brand	Pentair
Model	Logix 762
Category	Control Unit
Language	English