Stovax 705088 - Manual (Page 16)

16
SERVICING INSTRUCTIONS
SERVICING / FAULT FINDING CHARTS
NO
SPARK
IGNITION
FUNCTIONAL
CHECK
2
Ensure
there
is
no
debris
around
the
pilot
assembly,
(e.g.
coal,
soot
etc.)
which
could
short
the
spark,
clear
the
area.
From
Ignition
Fault
Finding
Chart
Part
1.
Consult
the
Users
Instructions,
retry.
Operate
the
valve
to
light
the
pilot,
does
the
valve
‘click’?
Is
the
valve
being
operated
properly?
Is
the
pilot
burner
horizontal?
See
diagram
1
on
page
15.
Reset
the
electrode
gap,
retry.
Replace
the
pilot
unit.
Replace
the
electrode
lead
and
retry.
Remove
the
electrode
lead
from
electrode
with
insulated
pliers.
Hold
the
tip
4mm
from
the
pilot
pipework,
is
there
a
spark
when
the
valve
‘clicks’?
Check
the
defective
or
damaged
control
knob
spindle
or
cam
operation.
Check
for
correct
location
of
piezo
components.
Correct
and
retry.
Is
the
electrode
wire
detached
from
the
piezo
in
the
valve?
Replace
the
combined
lead,
retry.
Remove
the
electrode
lead
from
the
piezo.
Operate
the
valve.
Does
a
spark
jump
from
the
piezo
to
the
valve
body?
Has
ignition
lead
become
detached
or
is
connection
poor?
Correct
and
retry.
NO NO
YES NO
NO NO
NO NO
NO
NO
NO
NO
NO NO YES
YES
YES
YES
YES
YES
YES
YES
YES YES
YES
YES
YES
PILOT
WILL
NOT
STAY
LIT
OR
FIRE
GOES
OUT
IN
USE
SYSTEM
OK
FLAME
FAILURE
FUNCTIONAL
CHECK
3
Ensure
there
is
no
debris
around
the
pilot
assembly,
(e.g.
coal,
soot
etc.)
which
could
short
the
spark,
clear
the
area.
Light
the
pilot
and
keep
the
control
knob
pushed
in
at
least
10
seconds
before
letting
go.
With
the
pilot
running,
is
the
gas
pressure
stated
on
the
databadge?
With
the
fire
running
on
full,
is
the
gas
at
the
pressure
stated
on
the
databadge?
Run
for
no
more
than
60
seconds,
turn
off,
time
interval
until
mag
unit
shuts
with
a
click.
Is
this
greater
than
7
seconds?
Tighten
the
connection
and
retry.
Run
for
60
seconds,
turn
off,
time
interval
until
mag
unit
shuts
with
a
click.
Is
this
greater
than
7
seconds?
Will
the
pilot
stay
lit?
Is
thermocouple
connection
good
in
back
of
valve?
Replace
the
thermocouple.
Will
pilot
stay
alight?
Change
the
pilot
unit.
Change
mag
unit.
Is
the
pilot
flame
of
the
correct
length?
See
diagram
1
on
page
19.
Problem
is
with
the
pipework
or
fittings
which
lead
to
the
fire.
Correct
and
retry.