L.B. White 350 Premier - Manual (Page 23)

Pr
ob
le
m
LED Constant On LE
D
L
ig
ht
N
ot
O
n
Normal Operation
Is
Select
or
Switch Set t
o
Heat?
Is F
an R
unning?
Set Select
or
Switch t
o Heat
Ye
s
Ye
s
No
Ye
s
Ye
s
Ye
s
Is
Thermostat
Set A
bo
ve R
oom
Te
m
perature?
Set Thermostat
Ab
ov
e R
oom
Te
m
perature.
Is
Thermostat
Def
ectiv
e? Check
for Continuity
.
Is
Pr
oper
Voltage Supplied
to
Heat
er P
ow
er Cor
d
and Thr
ough
Po
w
er
Cor
d?
R
eplace Thermostat
Does Heat
er
Light?
Are
24
V
olts
Supplied fr
om
Transf
ormer?
No No
No No
No
Is
Pr
oper
Voltage Supplied to
T
ransf
ormer? No
Ye
s
Ye
s
No
See
“One Time Flash”
L.E.D. Light is Disconnect
ed
or is Def
ectiv
e.
If Electrical Connections are Good, R
eplace L.E.D.
Check Dataplat
e f
or
Electrical Supply
R
eq
uirements. Pr
ovide
Pr
oper V
oltage F
rom
Electrical Supply
. Check
Cir
cuit Break
er
s in Building
Electrical Syst
em. Check
Po
w
er Cor
d f
or Continuity
.
R
eplace
Transf
ormer
No
Are
24
V
olts
Supplied t
o
Ignition Module?
Poor Electrical Connection or
Br
ok
en Wire Present.
R
epair or R
eplace.
R
eplace Ignition Module.
Check Electrical Connections and P
ow
er Supply t
o
Transf
ormer
.
R
epair as Necessar
y.
HEA
TING MODE
22
Ye
s
Ye
s