Guardian 2.0 LP or Natural Gas Heater
Owner’s Manual • Guardian 2.0
27
Th
re
e Ti
m
es
:
Ig
ni
tio
n f
ai
lur
e
hea
ter
d
oe
s n
ot
lig
ht o
r s
ta
y l
it
Is L
P t
an
k f
ull a
nd
pr
op
er
ly s
ize
d a
nd a
re
all g
as s
up
ply v
alv
es t
o
he
at
er o
pe
n?
Fi
ll t
an
k o
r r
es
ize i
f n
ec
es
sa
ry
.
Op
en
all
g
as
su
pp
ly v
alv
es
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Is p
ro
pe
r b
ur
ne
r m
an
ifo
ld
pre
ss
ure
rea
d a
t o
ut
let
o
f
ga
s v
alv
e?
A.
If l
ow o
r h
igh p
re
ss
ur
e i
s r
ea
d,
adjus
t o
ut
let
p
re
ssu
re
.
B.
If g
as p
re
ss
ur
e i
s n
ot r
ea
d,
re
pl
ac
e t
he g
as c
on
tro
l v
alv
e.
C.
(S
m
ar
t S
en
se
) I
f p
re
ss
ur
e i
s
no
t rea
d,
chec
k o
hm
rea
ding
be
tw
ee
n w
ire
s o
f r
ec
tifi
er p
lug
as c
on
ne
ct
ed t
o g
as c
on
tro
l.
Re
ad
ing s
ho
uld b
e 3 m
eg o
hm
. I
f
no
t, r
ep
lac
e t
he r
ec
tifi
er p
lug a
nd
rec
yc
le t
he
hea
te
r.
Re
m
ov
e o
rifi
ce a
nd b
ur
ne
r c
as
tin
g.
Bl
ow o
ut w
ith c
om
pr
es
se
d a
ir o
r
cle
an w
ith a s
of
t b
ru
sh
.
Chec
k w
iri
ng
.
Re
pa
ir o
r r
ep
lac
e.
Cl
ea
n fl
am
e s
en
so
r
wi
th e
m
er
y c
lot
h o
r
ste
el wo
ol.
Co
nn
ec
t ign
ito
r t
o it
s w
irin
g.
Ha
ve t
he b
ur
ne
r o
rifi
ce
,
bu
rn
er
ca
sti
ng
and
ma
nifo
ld
be
en c
he
ck
ed f
or b
loc
ka
ge
?
AD
-D
oe
s i
gnit
er
spa
rk
?
A
W
-D
oe
s i
gn
ite
r g
low
?
Is ig
nit
or
p
ro
pe
rly
co
n-
ne
ct
ed?
AW
-Is
120
vo
lts
su
ppl
ed
ac
ro
ss t
er
m
ina
ls H
SI o
n t
he
ign
itio
n c
on
tro
l m
od
ule
?
Ch
ec
k w
iri
ng
. R
ep
air w
iri
ng a
s n
ee
de
d.
If w
iri
ng i
s g
oo
d, r
ep
lac
e i
gn
itio
n c
on
tro
l.
De
fe
ct
ive
ignit
er
. P
er
-
fo
rm c
on
tin
uit
y c
he
ck
an
d r
ep
lac
e i
gn
ite
r i
f
ne
ce
ss
ar
y.
Ha
s w
iri
ng b
ee
n c
he
ck
ed
be
tw
ee
n i
gn
itio
n c
on
tro
l
an
d s
en
so
r?
AW
-Is fl
am
e s
en
so
r c
lea
n?
AW
-Is fl
am
e s
en
so
r i
ns
ula
-
to
r c
ra
ck
ed
?
Re
pl
ac
e fl
am
e
se
nse
ro
d.
Co
nt
ac
t e
lec
tric
ian
. S
ys
te
m
m
us
t b
e g
ro
un
de
d f
or
pr
op
er
op
er
at
ion
.
Pro
vid
e p
ro
pe
r p
re
ss
ur
e
to h
ea
te
r a
nd c
he
ck w
ith
a ga
ug
e.
Re
se
t t
he s
wi
tc
h a
nd c
he
ck f
or
:
- C
on
fir
m c
or
re
ct f
ue
l fo
r h
ea
te
r.
- P
ro
pe
r v
olt
ag
e t
o m
ot
or
.
- D
us
t a
nd b
uil
d u
p.
- P
lug
ge
d f
an a
ss
em
bly
.
- F
an n
ot t
igh
te
ne
d t
o m
ot
or
.
- O
bs
tru
ct
io
ns i
n h
ea
te
r.
Ch
ec
k f
or v
olt
ag
e t
o s
wi
tc
h. C
he
ck
wi
rin
g a
nd r
ep
air i
f d
ef
ec
tiv
e. I
f w
iri
ng
is g
oo
d a
nd v
olt
ag
e i
s n
ot p
re
se
nt
,
re
pl
ac
e i
gnit
io
n c
on
tro
l.
Ch
ec
k f
or v
olt
ag
e t
o v
alv
e. C
he
ck
wi
rin
g a
nd r
ep
air i
f d
ef
ec
tiv
e. I
f
wi
rin
g i
s g
oo
d a
nd v
olt
ag
e i
s n
ot
pre
se
nt
, re
pl
ac
e l
imi
t s
wi
tc
h.
Is h
ea
te
r p
ro
pe
rly
gro
un
ded
?
Is pr
op
er
ga
s pre
ss
ure
su
pp
lie
d t
o h
ea
te
r?
Ar
e hi
gh
lim
it s
wit
ch
con
ta
ct
s c
lose
d?
Ar
e 2
4 v
olt
s s
en
t f
ro
m t
er
m
ina
l
GV o
f c
on
tro
l to h
igh l
im
it
sw
itc
h?
Ar
e 2
4 v
olt
s s
up
pli
ed f
ro
m
th
e h
igh l
im
it s
wi
tc
h t
o t
he
ga
s c
on
tro
l v
alv
e?
A
D
Mo
de
ls
:
C
lo
se g
as s
up
pl
y v
al
ve t
o h
ea
te
r.
D
isc
onn
ec
t ignit
or
cab
le f
ro
m
ign
itio
n c
on
tro
l. P
lac
e
th
e t
ip o
f a s
cr
ew
dr
ive
r a
bo
ut 1
/8 i
n. f
ro
m w
he
re i
gn
ite
r c
ab
le w
as c
on
ne
ct
ed t
o c
on
tro
l. T
ur
n
he
at
er o
n. I
f s
pa
rk d
oe
s n
ot j
um
p f
ro
m i
gn
itio
n c
on
tro
l to s
cr
ew
dr
ive
r, r
ep
lac
e i
gn
itio
n c
on
tro
l. I
f
spa
rk
is
se
en
, r
ep
lac
e t
he
ign
ite
r o
r i
gn
itio
n c
ab
le.
En
su
re t
he h
ea
te
r i
s
pr
op
er
ly g
rou
nd
ed
. C
hec
k
all
gr
ou
nd
ed
cir
cu
its
te
rm
i-
nals
a
nd
co
nn
ec
tio
ns
.
