Service manual

mostl
y
, a
p
rinted circuit board internal communication 3 internal software interru
p
t the
com
p
onent is broken. error flashin
g
error
p
roblem su
pp
l
y
p
ower
internal re
g
ulation fault hard-ware re
p
lace
p
rinted
com
p
onent broken circuit board
Analo
g
/Di
g
ital
conversion error
hard-ware component
broken
If the flue
g
as sensor measures extreme low flue
g
as 4 flue
g
as software check wirin
g
a tem
p
erature below - 25°C, tem
p
erature flashin
g
senso
r
p
roblem and connections
the boiler runs into lock-out,
(
< - 25°C below zero
)
because the frost
p
rotection hard-ware check wh
y
frost
p
rotection
failed function. com
p
onent broken fails and re
p
air this.
check flue
g
as use view o
p
tion in
sensor function menu mode
test sensor re
p
lace sensor
(
R=12 kOhm@25°C
)
flue
g
as senso
r
4 flue
g
as check flue
g
as use view o
p
tion in
o
p
en circuit continuous senso
r
sensor function menu mode
test sensor re
p
lace sensor
broken flue
g
as sensor, or wirin
g
(
R=12 kOhm@25°C
)
p
roblem
flue
g
as senso
r
4. flue
g
as check flue
g
as use view o
p
tion in
short circuit continuous senso
r
sensor function menu mode
test sensor re
p
lace sensor
(
R=12 kOhm@25°C
)
Trouble shooting manual EN E000129004