Smeg W01
Warning — low inlet water pressure
Source: SMEG 2/instruction-manual_ALFA4-515EHVLFT_19290337201-EN.pdf
What does Smeg W01 mean?
Smeg shows W01 as a warning. The display title reads "WARNING" with the description "LOW INLET WATER PRESSURE". As a warning rather than a blocking error, it alerts you that the water supplied to the appliance is below the expected pressure, which can affect steam and washing performance if not addressed.
Symptoms
- Display shows W01 with the title "WARNING"
- On-screen description reports low inlet water pressure
- Steam production may be weak or inconsistent
- Washing function may underperform
Common causes
- Inlet water pressure lower than required
- Water tap not fully open
- Restricted or partially blocked water supply line
- Low pressure in the building's water supply
Diagnostic steps
- 01
Check the water tap
The manual's fault table directs you to check the water tap; make sure the supply tap is fully open.
- 02
Inspect the supply line
Confirm the inlet hose is not kinked or restricted so water can reach the appliance at adequate pressure.
- 03
Verify building water pressure
Check whether other outlets show low pressure, indicating the issue is upstream of the appliance.
- 04
Contact Technical Assistance if it persists
If the warning continues with the supply confirmed open, contact Smeg Technical Assistance as the manual directs.
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When to call a professional
W01 is a warning you can often clear by restoring proper water supply, but if pressure is confirmed adequate and the warning persists, the inlet valve or pressure sensing may need attention, which the manual treats as a Technical Assistance matter. Call a qualified Smeg technician rather than dismantling the water circuit yourself if the warning will not clear.
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Open a ticket — free accountOther Smeg error codes
Communication error — check power board
E02Wrong firmware version — update power board
E03No water pressure — cycle stopped
E04Timeout — error during cooldown
E05Washes database error — unable to read database, reinstall software
E06Safety thermostat — oven over-temperature
E07Thermal cutout — motor over-temperature
E08Probe fault — oven chamber probe faulty
W02Warning — motor RPM not detected