L.B. White 400 Tradesman Portable Forced Air - Manual (Page 23)

TRADESMAN HEATER
F
an Motor Does
Not Run, Heater Does Not
L
ight.
Is pr
oper v
oltage
supplied t
o
heat
er?
Pr
o
vide pr
oper
v
oltage t
o
heat
er
.
Check breajer and
e
xt
ension cor
ds.
No
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
thermostat?
Check po
w
er cor
d
and electrical supply
.
Is pr
oper
v
oltage supplied
to
ignition
contr
ol?
Def
ectiv
e thermostat.
Is v
oltage
supplied t
o
air
pr
o
ving switch fr
om the
ignition contr
ol?
Def
ectiv
e Ignition
Contr
ol.
Does f
an mo
to
r
star
t?
Check f
or v
oltage fr
om ignition
contr
ol t
o
f
an mo
to
r.
If mo
to
r
receiv
es v
oltage but does no
t
star
t, replace the mo
to
r.
If mo
tor does no
t receiv
e v
oltage
fr
om the ignition contr
ol, replace
the ignition contr
ol.
Are air pr
o
ving
switch contacts
stuck closed?
Check continuity
. If
binding switch. R
epair
as needed or replace
air pr
o
ving switch.
22
Problem
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
Ye
s
No
No
No
No
No