Stovax STUDIO 8700CFCHEC - Manual (Page 24)

24
SERVICING INSTRUCTIONS
FAULT FINDING CHARTS
PILOT
WILL
NOT
STAY
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
the
Replacing
Parts
section.
Problem
is
with
the
pipe
work
or
fittings
which
lead
to
the
fire.
Correct
and
retry.
Is
thermocouple
connection
good
in
back
of
valve?
Replace
pilot
unit.
Will
pilot
stay
alight?
Change
mag
unit.
Is
the
pilot
flame
of
the
correct
length?
Are
the
thermocouple
leads
damaged
or
loose
in
the
interrupter
block?
Is
the
ON/OF
switch
in
the
ON
(I)
position.
See
diagram
?
Change
the
pilot
unit
or
damaged
thermocouple
leads
Will
pilot
stay
alight?
With
the
pilot
running
is
the
gas
pressure
as
stated
on
the
data
badge?
With
the
fire
running
on
full
is
the
gas
at
the
pressure
stated
on
the
data
badge?
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
Yes
SYSTEM
O
k
Yes
Yes
Yes
Yes
No
Yes No
Light
the
pilot
using
either
the
handset
or
the
touch
pad
FLAME
FAILURE
FUNCTI
ONAL
CHEC
k
3
IGNITION
FUNCTIONAL
CHEC
k
2
NO
SPARK
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
ignition
lead
from
electrode.
With
insulated
pliers.
Hold
the
tip
4.0mm
from
the
pilot
pipe
work,
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
handset
batteries
are
OK.
Replace
if
required.
Check
handset
is
on
manual.
Check
ON/OFF
switch
is
set
to
ON
(
I).
Check
batteries
to
the
control
unit.
Replace
if
required.
Retry
with
handset
and
touch
pad.
Is
the
valve
being
operated
correctly?
Yes
Yes Yes No No No
Yes
Yes
Yes
No
Replace
the
electrode
Replace
the
ignition
lead
and
retry.
No
Is
the
flue
working?
Rectify
flue
Yes
No