Problem
LED Constant On
LED Light
Not On
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
b
o
v
e R
oom
Te
m
perature?
Set Thermostat
A
b
o
v
e R
oom
Te
m
perature.
Is
Thermostat
Def
ectiv
e? Check
for Continuity
.
Is Pr
oper
V
oltage Supplied
to
Heat
er P
o
w
er Cor
d
and Thr
ough
P
o
w
er
Cor
d?
R
eplace Thermostat
Does Heat
er
Light?
Are 2
4
V
olts
Supplied fr
om
Transf
ormer?
No
No
No
No
No
Is
Pr
oper
V
oltage Supplied t
o
Transf
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
e
q
uirements.
Pr
o
vide Pr
oper V
oltage F
rom
Electrical Supply
. Check
Cir
cuit Break
er
s in Building
Electrical Syst
em. Check
P
o
w
er Cor
d f
or Continuity
.
R
eplace T
ransf
ormer
No
Are 2
4
V
olts
Supplied t
o
Ignition
Module?
P
oor Electrical
Connection or Br
ok
en
Wire Present. R
epair
or R
eplace.
R
eplace Ignition Module.
Check Electrical
Connections and P
o
w
e
r
Supply t
o
T
ransf
ormer
.
R
epair as Necessar
y.
HEA
TING MODE
23
Ye
s
Ye
s