Smeg WO-01 B Osmosis-treated water not produced, Possible, Display, causes, Subcause, Solution

B) Osmosis-treated water not produced

Possible	Subcause	Solution	Display
			alarm
causes
			message
		Check power supply and power switch ON
	No electrical power	(see “Positioning and installation”)
		Power plug not inserted in electrical panel
		(insert)
	No power to pump	Check connections and whether board is	none
		sending a signal
		Pump condenser faulty (replace)
	Intake pressure switch faulty (jammed on full)	Replace, or adjust the pressure with the
		adjuster screw (fig.5)
	Vat level switch (low) faulty (jammed on full)	Max level switch faulty, does not send
		production enable signal (replace/clean)
Osmosis pump		(see wiring diagram)
		- Supply cock closed OPEN;
not running
		- Supply filter blocked CLEAN
		- Supply pressure should be > 1.5 bar
	No water supply or supply pressure/flow	- Pre-filter up/downstream cocks closed
		OPEN (see maintenance section)	Low pressure
	inadequate	- Filter blocked – REPLACE (fig.5)
		- Filler solenoid valve faulty or no power –
		REPLACE IF FAULTY (fig.5)
		- Intake pressure switch faulty (jammed on
		empty) – REPLACE (fig.5)
	Water in vat	Vat level switch (high) faulty, does not	Flooding
		switch to full: continues producing with	alarm
		overflow. REPLACE (see wiring diagram)
	Water supply too cold (<10°)	Increase supply temperature
	Pre-filter blocked	Replace pre-filter (see maintenance
		section)
	Membranes blocked	Replace membranes (see maintenance
		section)
Osmosis pump
	Impeller damaged/broken	Check pressure gauge reading
running but		if > 8, replace pump or impeller as
production low		required
	Bypass valves need adjustment	See special adjustments section
	Discharge pipe crimped	Route pipe properly
	Pressure drop in vat supply hoses	Shut off power, dry thoroughly and repair
		leak

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