Ofs Softcontrol Smart, Instruction Manual

Page: 18 / 24

18
12. Malfunctions and possible causes
Problem To do
1. Signaling that the threshold value has been exceeded with normal soft water hardness
below the limit value
to low water flow through measurement
chamber when the valve is switched on, water must
come from the drain
the raw water valve does not close com-
pletely (e.g. due to deposits in the valve
seat), which means that small amounts of
raw water flow into the measuring cell in
addition to the soft water
replace valve
low brine concentration in soft water
rinse active column of softening plant once
again
sensor possibly contaminated
or damaged by brine
replace sensor
2. Sensor not recognized
sensor not plugged in correctly
or electrical plug connection defective Check plug connection or connection cable
for continuity
3. Brine alarm
high concentration of brine in the soft wa-
ter, conductivity compared to the raw wa-
ter is significantly higher
rinse the active column again
raw or soft water flow interrupted, sensor
no longer rinsed with soft or raw water
restore the water supply
sensor possibly contaminated or damaged
by brine
replace sensor
4. Valve leaking
one of the two valves no longer closes
properly
remove the hoses from the measurement
chamber and check whether drops of water
are escaping despite the closed valves

replace affected valve
5. Raw or soft water does not flow
sample inlet closed check shut-off valves
pre-filter blocked clean fine-filter
sample hose blocked check sample hose for flow
defective valve replace valve