Service manual

If the flow sensor exceeds a hi
g
h flow tem
p
erature H flow senso
r
test sensor re
p
lace flow sensor
tem
p
erature of 105°C, the flashin
g
limiter
(
R=12 kOhm@25°C
)
boiler runs into lock-out
(
105°C
)
burner on check wate
r
re
p
lace
p
ressure
burner has to be restored b
y
p
ressure senso
r
interru
p
tin
g
su
pp
l
y
p
ower
If the flow sensor exceeds a hi
g
h flow tem
p
erature H flow senso
r
test sensor re
p
lace flow sensor
tem
p
erature of 105°C, while the continuous hi
g
h
(
R=12 kOhm@25°C
)
burner was off, the boiler blocks. tem
p
erature
(
105°C
)
check wate
r
re
p
lace
p
ressure
burner action restores burner of
f
p
ressure senso
r
when the actual flow tem
p
erature
becomes 5°C below the set
p
oint.
at the end of heat demand of the end of heat demand h
p
um
p
afterrun
p
ost-rinse time
p
um
p
sto
p
s automaticall
y
combi-boiler, the
p
um
p
p
ost-rinse
(
Hot water
)
continuous hot water hot water is after 30 seconds
for 30 seconds over the hot water non-ad
j
ustable
circuit.
the software was interru
p
ted in the software blockin
g
nc software unex
p
ected interru
p
t the 230 volt
middle of a se
q
uence continuous
p
roblem failure su
pp
l
y
p
ower
o
p
en brid
g
e of connector of
g
as valve circuit has O
g
as valve check wirin
g
check contact of
p
lu
g
and
p
rinted circuit board causes o
p
en brid
g
e flashin
g
connector X4 check brid
g
e terminal of PCB
this lock-out on connector X4
Trouble shooting manual EN E000129004