Service manual

At each burner start, while the fan too man
y
start F boiler does NO GAS SUPPL
Y
o
p
en
g
as cocks
runs on the i
g
nition s
p
eed of attem
p
ts, durin
g
one flashin
g
not start
g
as valve failure in su
pp
l
y
line
2700 r
p
m, the
g
as valve o
p
ens heat demand,
(
four failed
and a flammable
g
as/air mixture successivel
y
consecutive
g
as inlet
p
ressure is too hi
g
h, reduce
g
as inlet
is su
pp
lied to the burner. The attem
p
ts
)
(
> 60 mbar
)
. The safet
y
valves
p
ressure
glow plug ignites the gas/air can not open against high
mixture at the surface of the inlet
p
ressure
burner. If there is insufficien
t
ionisation current at the end of NO IGNITION check resistance
g
low
p
lu
g
the safet
y
time, a new start
g
low
p
lu
g
(
1 - 1,4 kOhm
)
attem
p
t will be made. After four
failed consecutive start attem
p
ts, the life time of the
g
low
p
lu
g
re
p
lace
g
low
the boiler runs into lock-out. is de
p
endin
g
on the numbe
r
p
lu
g
of starts and on hi
g
h mains
volta
g
e su
pp
l
y
NO FLAME check ionisation current
g
as/air mixture
(
low load 3-13 micro Am
p)
No flame buildin
g
.ad
j
ustment
T
he
g
as/air mixture is not set full / low load
correctl
y
for the t
yp
e of
g
as
NO IONISATION check wirin
g
, remove short
no current circuit to earth
with hi
g
h tem
p
erature flame, remove dirt with
an insulatin
g
la
y
er can be fine sand
p
a
p
e
r
formed on the
p
robe
Trouble shooting manual EN E000129004