‐CWH520
22
waterintakehoseorcleaningofrinsingnozzles.
IftheproblempersistsduringFILL:
‐ tank pressure switch has failed (continuous empty
reading:check whether tank safety pressure switch
istripped)
‐leakfrompipeconnectedtoairtrap
Iftheproblemoccursduringworkcycle
‐ filler hose bleeder valve fouled: tank empties
completely at end of a wash cycle due to siphon
effect.
Err06
Waterpump‐outmalfunction
Inspect the filters for dirt and check that the drain
hoseisnotblocked,bentorcrushed.
Check that the drain pump is not blocked by dirt by
removing the insert on the sump (from inside the
tank).
Ifitpersists,checkinthisorder:
‐ with tank empty: constant “tank full” signal:tank
pressureswitchfaultyorleakfromconnectionsofair
trapconnectionpipe(waterenteringpipe)
‐withtankfull:drainpumpfailure
Err09 Toomuchwaterintank
Withtankfull:
seeabove(waterpump‐outmalfunction)
With tank empty: constant “tank full” signal: safety
pressureswitchfaultyorleakfromconnectionsofair
trapconnectionpipe(waterenteringpipe)
Err23 Boilerdoesnotheatupasexpected
The problem might occur because water is
continually entering the tank (the causes are as for
Err5–seeabove)
Ifitpersists,checkinthisorder:
‐damagedboilerheatingelement
‐contactorfailure,
‐boilersafetythermostatfailure,
‐ boiler temperature probe faulty
or incorrectly
positioned
‐motherboardrelayfailure,
Important:if the boiler heating elementis damaged,
this might be due to operation with no water in the
boiler‐thepressureswitchisindicatingfullevenwith
the boiler empty: check and ifnecessary replace the
boiler air trap and/or the relative pressure
switch:
the problem is generally preceded by “boiler
overheatingE28”
Err24 Boilertemperatureprobemalfunction
boiler temperature probe disconnected or not
working
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