Stovax F40 - Manual (Page 16)

16
SERVICING INSTRUCTIONS
FAULT FINDING CHARTS
PIL
O
T
WILL
NO
T
ST
AY
LIT
OR
FIRE
GOES
OUT
IN
USE
Ensure
there
is
no
debris
around
the
pilot
assembly
,
(e.g
. soot
etc.)
Check
for
fluff
in
the
pilot
aeration
hole.
See
the
diagram
in
Replacing
Parts
section.
Problem
is
with
the
pipework
or
fittings
which
lead
to
the
fire.
Correct
and
retry
.
Is
thermocouple
connection
good
in
back
of
valve?
Replace
thermocouple.
W
ill
pilot
stay
alight?
Change
mag
unit.
Is
the
pilot
flame
of
the
correct
length?
Is
the
thermocouple
in
its
correct
postion
in
the
pilot
bracket.
See
diagram
5
in
Replacing
Parts,
section
2.3.
Change
the
ODS
unit.
W
ill
pilot
stay
alight?
W
ith
the
pilot
running
is
the
gas
pressure
as
stated
on
the
databadge?
W
ith
the
fire
running
on
full
is
the
gas
at
the
pressure
stated
on
the
databadge?
Run
for
3
mins,
turn
off
, time
interval
until
mag
unit
shuts
with
a
click.
Is
this
greater
than
7
seconds?
Run
for
3
mins,
turn
off
, time
interval
until
mag
unit
shuts
with
a
click.
Is
this
greater
than
7
seconds?
Tighten
the
connection
and
retry
.
No
No No
No
No
No
Ye
s
SYSTEM
OK
Ye
s
Ye
s
Ye
s
Ye
s
No
Ye
s
Ye
s
No
Light
the
pilot
using
either
the
hanset
or
the
touch
pad.
FLAME
FAIL
URE
FUNCTIONAL
CHECK
3
IGNITION
FUNCTIONAL
CHECK
2
NO
SP
ARK
Ensure
there
is
no
debris
around
the
pilot
assembly
,
(e.g
. soot
etc.)
which
could
short
the
spark,
clean
the
area.
Consult
the
users
instructions,
retry
.
From
Ignition
Fault
Finding
Chart
1
Is
the
gap
between
electrode
and
thermocouple
4.0mm?
Has
ignition
lead
become
detached
or
is
connection
poor?
Remove
the
electrode
lead
and
electrode.
W
ith
insulated
pliers.
Hold
the
tip
40mm
from
the
pilot
pipework,
is
there
a
spark
when
the
system
is
operated?
Has
the
ignition
lead
become
detached
from
the
control
box?
Replace
the
lead,
retry
.
Correct
and
retry
.
Check
hanset
batteries
are
OK.
Replace
if
required.
Check
handset
is
on
manual.
Check
if
handset
lock
is
off
. Check
batteries
to
the
control
unit.
Replace
if
required.
Retry
with
handset
and
touch
pad.
Is
the
valve
being
operated
correctly?
Check
tab
on
pilot
burner
wood
is
not
damaged.
Either
repair
tab
or
replace
pilot
burner
&
retry
Ye
s
Ye
s
Ye
s
No No No
Ye
s
Ye
s
Ye
s
No
No
Replace
the
electrode.
Replace
the
electrode
lead
and
retry
.
Ye
s
No