L.B. White AD100, Owner'S Manual

Page: 21 / 64

Problem
LED
c
on
st
an
t on
N
ormal operation.
LED
F
la
sh
in
g
LED
N
ot
On
Is pr
oper v
oltage
supplied t
o br
ood
heat
er?
Check data plat
e f
or
electrical supply req
uirements.
Pr
ovide pr
oper
voltage, contact
electrician.
Ye
s
No
Ye
s
Ye
s
Ye
s
Def
ectiv
e wire or
electrical connection.
R
epair or replace.
Is
thermostat
def
ectiv
e? Check f
or
continuity
.
Are 2
4
v
olts
supplied t
o ignition
contr
ol t
erminal W
fr
om thermostat?
R
eplace
thermostat
Is br
ood heat
er
connect
ed t
o
po
w
er supply?
No
No
No
Ye
s
Ensure br
ood
heat
er is connect
ed
to
po
w
er supply
.
Check break
er
s
Does transf
ormer
reduce incoming
voltage t
o 2
4
volts?
Def
ectiv
e transf
ormer
.
R
eplace transf
ormer
.
No
Is 2
4
v
olts
deliv
ered t
o
thermostat?
Check wiring betw
een
transf
ormer and
thermostat. Check continuity
. R
epair as
needed.
No
Ye
s
Ye
s
Is
thermostat set
abo
ve
room
te
m
perature?
Set thermostat
abo
ve
room
te
m
perature.
No
Def
ectiv
e
ignition contr
ol.
One Time Flash patt
ern begins
immediat
ely
, fan mo
to
r
does no
t run. Br
ood
heat
er does no
t light.
Is air
-pr
oving switch arm
binding on housing or
an obstruction in br
ood
heat
er outlet?
Is air
-
pr
oving switch
shor
ted? (P
er
form
continuity check on air
-
pr
oving switch.)
Ye
s
No
R
epair and/or
remo
ve
obstructions.
Ye
s
R
eplace air
-pr
oving
switch.
Lo
ng
F
la
sh
Tw
o seconds
on, tw
o seconds
of
f repe
titiv
ely
for 1
5
minut
es.
Br
ood heat
er has att
em
pt
ed three ignition trials. Br
ood heat
er is in a 1
5
minut
e w
ait period bef
ore att
em
pting ithree more trials. If ignition is no
t
achie
ved af
ter the second set of three ignit
on trials, ther ignition contr
ol will
lock out, and will present the three time flash patt
ern. R
ecy
cle the br
ood
heat
er t
o b
ypass the long flash code.
21