Pentair Fleck 5800 LXT - Page 79

Installer manual Fleck 5800 LXT - Troubleshooting
Ref. MKT-IM-005 / F - 30.04.2020 79 / 96
Problem Cause Solution
Loss of water pressure. Scaling/Fouling of inlet pipe. Clean or replace pipeline.
Pretreat to prevent.
Fouled resin. Clean the resin. Pretreat to
prevent.
Improper backwash. Too many resin fines and/or
sediment. Call dealer, reset
backwash flow rate, and/or adjust
time.
Excessive water in brine
tank and/or salty water to
service.
Plugged Drain Line. Check flow to drain. Clean flow
control.
Dirty or damaged brine valve. Clean or replace brine valve.
Plugged injector. Clean injector and replace screen.
Low inlet pressure. Increase pressure to allow
injector to perform properly (1.4
bar minimum).
Timer not cycling. Replace controller.
Softener fails to use salt. Plugged/restricted drain line. Clean drain line and/or flow
control.
Injector is plugged. Clean or replace injector and
screen.
No water in brine tank. Check for restriction in BLFC.
Ensure safety float is not stuck.
Water pressure is too low. Line pressure must be at least 1.4
bar.
Brine line injects air during brine
draw.
Check brine line for air leaks.
Internal valve leak. Call dealer. Check piston, seals
and spacers for scratches and
dents.
Valve cycles continuously. Faulty controller. Replace controller.
Continuous flow to drain. Foreign material in control valve. Call dealer. Clean valve, rebuild
unit.
Internal control valve leakage.
Valve jammed in brine or
backwash position.
Motor stopped or jammed during
regeneration.
Replace motor.