‐
CWH
520
22
water
intake
hose
or
cleaning
of
rinsing
nozzles.
If
the
problem
persists
during
FILL:
‐
tank
pressure
switch
has
failed
(continuous
empty
reading:
check
whether
tank
safety
pressure
switch
is
tripped)
‐
leak
from
pipe
connected
to
air
trap
If
the
problem
occurs
during
work
cycle
‐
filler
hose
bleeder
valve
fouled:
tank
empties
completely
at
end
of
a
wash
cycle
due
to
siphon
effect.
Err06
Water
pump
‐
out
malfunction
Inspect
the
filters
for
dirt
and
check
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
it
persists,
check
in
this
order:
‐
with
tank
empty:
constant
“tank
full”
signal:
tank
pressure
switch
faulty
or
leak
from
connections
of
air
trap
connection
pipe
(water
entering
pipe)
‐
with
tank
full:
drain
pump
failure
Err09
Too
much
water
in
tank
With
tank
full:
see
above
(water
pump
‐
out
malfunction)
With
tank
empty:
constant
“tank
full”
signal:
safety
pressure
switch
faulty
or
leak
from
connections
of
air
trap
connection
pipe
(water
entering
pipe)
Err23
Boiler
does
not
heat
up
as
expected
The
problem
might
occur
because
water
is
continually
entering
the
tank
(the
causes
are
as
for
Err5
–
see
above)
If
it
persists,
check
in
this
order:
‐
damaged
boiler
heating
element
‐
contactor
failure,
‐
boiler
safety
thermostat
failure,
‐
boiler
temperature
probe
faulty
or
incorrectly
positioned
‐
motherboard
relay
failure,
Important:
if
the
boiler
heating
element
is
damaged,
this
might
be
due
to
operation
with
no
water
in
the
boiler
‐
the
pressure
switch
is
indicating
full
even
with
the
boiler
empty:
check
and
if
necessary
replace
the
boiler
air
trap
and/or
the
relative
pressure
switch:
the
problem
is
generally
preceded
by
“boiler
overheating
E28”
Err24
Boiler
temperature
probe
malfunction
boiler
temperature
probe
disconnected
or
not
working
Содержание CWH520D
Страница 1: ...PROFESSIONAL DISHWASHER ...
Страница 12: ... CWH 520 12 Figure 1 Appliance electrical system diagram ...