Smeg CW500 Manual page 14

The dishwasher is able to identify a number of malfunctions and show them on the display.
If the problem persists after the dishwasher has been switched off and back on, proceed as described below:
The anti-flooding system has been activated
Err01
(for the relevant models only).
Tank temperature probe malfunction
Err04
Tank water filling malfunction
Err05
Water pump-out malfunction
Err06
Tank water level too high
Err09
Boiler heating malfunction (does not heat
Err23
up)
Boiler temperature probe malfunction
Err24
Boiler water filling malfunction
Err25
Boiler emptying malfunction
Err26
Boiler emptying malfunction – with tank full
Err27
Boiler heating malfunction (overheating)
Err28
7 MALFUNCTIONS SHOWN ON THE DISPLAY
Large water leak : check the origin of the problem.
Tank temperature probe disconnected or not working
Check dynamic pressure in intake system, inspect water
intake filter and clean if necessary.
If the problem persists:
- tank pressure switch has failed (continuous empty
reading)
- leak from pipe connected to air trap
- valve vent exhaust pipe blocked
Inspect the filters for dirt and that the drain hose is not
blocked, bent or crushed.
Check that the drain pump is not blocked by dirt by
removing the insert on the sump (from inside the tank)
If the problem persists:
with the tank empty: tank pressure switch defect
‐
(the contact is locked on full)
with tank full: drain pump has failed
‐
- with tank full:
see above (water pump-out malfunction)
- with tank empty:
safety pressure defect (the contact
is locked on full)
-circuit board relay failure,
- contactor failure.
- boiler safety thermostat failure,
- boiler temperature probe faulty or incorrectly positioned
- water continues to enter the tank due to tank pressure
switch defect
boiler temperature probe disconnected or not working
Check that the water intake tap is on and the dynamic
pressure in the intake system, inspect the water intake
filter and clean if necessary.
If the problem persists:
- boiler pressure switch has failed (continuous empty
reading)
- pipe leaking/disconnected
- check that rinsing spray arm nozzles are clean
- boiler pressure switch has failed (continuous full reading)
- rinsing pump not working
Boiler pressure switch has failed (continuous full reading)
-circuit board relay failure, or
- contactor failure
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