20
Problem
LED Constant On
LE
D
LL
ig
ht
N
ot
OO
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
Te
m
perature
Contr
ol Set
Ab
ov
e R
oom
Te
m
perature?
Set Contr
ol A
bo
ve
R
oom
Te
m
perature.
Is
Te
m
perature
Contr
ol Def
ectiv
e?
Check f
or
Continuity
.
Is Pr
oper
Voltage Supplied
to
Heat
er P
ow
er Cor
d
and Thr
ough
Po
w
er
Cor
d?
R
eplace T
em
perature Contr
ol.
Does Heat
er
Light?
Are 2
4
V
olts
Supplied fr
om
Transf
ormer?
No
No
No
No
No
Ye
s
Is
Pr
oper
Voltage Supplied t
o
Transf
ormer?
No
Ye
s
Ye
s
No
See “One Time Flash”
L.E.D. Light is Def
ectiv
e.
R
eplace Ignition Contr
ol.
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 T
ransf
ormer
No
Are 2
4
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 T
ransf
ormer
.
R
epair as Necessar
y.
HEA
TING MODE
Ye
s
