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Problem
Softener fails to draw
brine
Controller cycles
continuously
Drain flows continuously
Upper drive
synchronization
Ref. MKT-IM-013 / E - 23.09.2020
Cause
Plugged drain line flow control.
Plugged injector and/or filter.
Low water pressure.
Internal valve leak.
Bad programming.
Power head not operating
properly.
Power head not operating
properly.
Faulty microswitch or wiring
loom.
Defective or badly set cycle cam.
Foreign elements in the valve.
Internal valve leak.
Valve blocked in brine refill or
backwash.
Defective or blocked motor.
Power head not operating
properly.
Power failure while the electronic
was compiling data.
The board doesn't receive the
signal from the homing
microswicth (motor runs for the 6
first minutes of UD display then
shows ER0).
Er 0 was shown, power switch off
and on: UD---- is displayed at
power restoration and motor runs
for 6 minutes looking for its
position, finally shows Er0 again if
expected signals from
microswicthes aren't received.
Installer manual Fleck 5600 SXT - Troubleshooting
Solution
Clean drain line flow control.
Clean or replace injector and/or
filter.
Raise inlet pressure to 1.8 bar
minimum.
Change seals & spacers and/or
piston assembly.
Program correctly.
Change power head.
Change power head.
Change microswitch or wiring
loom.
Reposition or change cycle cam.
Clean valve and check it in the
different regeneration positions.
Change seals & spacers and/or
piston assembly.
Change motor and check gear
teeth.
Change power head.
System will recover automatically
within a few minutes.
Check microswicthes and
associated wiring.
89 / 104
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