Smeg WO-01 - Manual (Page 16)

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6- Faults
Front door leds
The door has two leds to indicate:
- Green: power on, normal operation;
- Red: fault, production of osmosis-treated water stopped
Important:
THE DOOR GIVES NO INDICATION OF DELIVERY
CIRCUIT FAULTS
See below for details.
Green
Red
List of faults
A) No osmosis-treated water delivery
Possible causes Subcause Solution
Display alarm
message
No water in vat See point "B" see point "B"
Check power supply and power switch ON
(see “Positioning and installation”)
No electrical power
Power plug not inserted in electrical panel
(insert)
Check connections and whether board
is sending a signal
No power to pump
Pump condenser faulty (replace)
Vat pressure switch faulty (jammed on
empty)
Empty vat (manually with jumper on delivery
pump or cock –fig.4) and replace pressure
switch (fig.1)
Delivery pressure switch faulty (jammed
on full) Replace, or adjust the pressure with the
adjuster screw (fig.2)
Non-return valve jammed (does not
open)
Check valve, if jammed replace/clean (fig.3)
Delivery pump not
running
Vat not full enough for use (min level) Wait for a few minutes while it fills
No water arriving at pump: vat suction
pipe blocked/crimped/cock closed
Remove obstacle/open cock (fig.4)
Air in delivery pipe Shake pipe and see if air rises into the vat
Impeller damaged/broken Replace
The user requires minimum intake
pressure of >1.8 BAR
System limit
Delivery pump runs
but does not deliver
or only insufficiently
The user requires flow > 20 l/min Reduce user load
none