L.B. White 170 Tradesman Portable Forced Air - Manual (Page 19)

TRADESMAN U
L
TRA HEATER
Red
L
ight Constant On
L
ED light
not on
Normal Operation
Does f
a
n
mo
tor run?
Ye
s
Ye
s
Does heat
er
light?
LED light def
ectiv
e
R
eplace LED
Is thermostat
set abo
v
e
r
oom
te
m
perature?
Set thermostat
abo
v
e
r
oom
te
m
perature.
Is pr
oper v
oltage
supplied t
o
heat
er
po
w
er cor
d?
Check e
xt
ension cor
ds and cir
cuit break
er
s.
R
epair e
xt
ension cor
d, reset break
er
, or call
q
ualif
ied electrician.
No
19
Problem
Def
ectiv
e
Ignition Contr
ol
Does thermostat
receiv
e pr
oper
v
oltage fr
om
po
w
er cor
d?
Does thermostat
send pr
oper
v
oltage t
o
ignition contr
ol?
Check f
or pr
oper v
oltage deliv
ered
fr
om thermostat t
o
cir
cuit boar
d.
If electrical connections are good,
replace thermostat.
Ye
s
Ye
s
Ye
s
No
No No
No
LED Flashing
Is air pr
o
ving
switch shor
ted?
(Check continuity on air pr
o
ving switch in
open and closed
positions).
Ye
s
If air pr
o
ving switch is jumered,
remo
v
e
jum
per and ret
est.
If switch e
xhibits shor
t, replace the
switch.
One Time Air proving switch contacts are closed before fan motor starts.
Is air pr
o
ving switch
stuck closed?
Check continuity
.
Is air pr
o
ving switch
binding?
R
epair
.
No
No
R
eplace air pr
o
ving switch
Ye
s
Ye
s