Smeg WO-01 - Manual (Page 18)

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C) Water production not conforming
Display alarm
message
Cause of alarm Solution
Adjust "bypass" needle valve
HHHH
The treated water does not conform
with settings
Replace membranes
Replace pre-filter (see maintenance section)
Replace membranes (see maintenance
section) LLLL The water production is below the set
value
Adjust "bypass" needle valve
Figures
Fig.1
Pressure switch
Fig.2
Delivery pressure
switch with adjust
screw