L.B. White 300 Director - Manual (Page 20)

Problem
Motor does not run on call for heat
Is heat
er
plugged in?
Is
select
or
switch set t
o
ON?
Plug heat
er in.
Mo
v
e the
select
or switch
to the ON position.
Ye
s
No
Ye
s
Ye
s
Is
pr
oper v
oltage
supplied t
o po
w
er
cor
d?
Def
ectiv
e
mo
tor or
capacit
or
Set the thermostat t
o a
temeprature setting
abo
v
e r
oom t
em
perature
No
No
Ye
s
Is
thermostat set t
o
call f
or heat?
No
Ye
s
Does fuse deliv
er
pr
oper v
oltage?
R
eplace the switch.
No
Is ON/OFF switch sending out po
w
er
when postioned t
o
ON?
No
Check fuse f
or continuity
. If
none, replace fuse.
Ye
s
Check thermostat f
or continuity
.
R
eplace if def
ectiv
e.
Does thermostat send out v
oltage
receiv
ed fr
om
ON/OFF switch?
No
Ye
s
Check f
or pr
oper wiring
int
egrity
. If good, replace
ignition contr
ol.
Is rela
y receiving
v
oltage fr
om
ignition contr
ol?
No
Ye
s
Def
ectiv
e rela
y.
Is rela
y sending
po
w
er t
o f
an mo
tor?
No
Ye
s
Det
ermine electrical req
uirements of
heat
er
. Ensure it matches po
w
er
supply
. Check wiring of po
w
er supply
to heat
er
.
Motor runs, heater ignites, but emits smoke
Ye
s
Are air inlet and
outlet free of
block
ages?
R
emo
v
e block
ages
No
V
erify collar
setting. and air
opening.
No
Is air adjustment collar on burner set t
o pr
oper
setting f
or altitude?
Ye
s
Check the fuel lines f
or
tightness. If tight, check
for leaks. R
eplace if leaks
are f
ound
No
Ha
v
e fuel lines
been check
ed f
or
leaks?
Drain and ref
ill with clean
fuel. Check f
ilt
er and f
ilt
er
bo
wl. Clean with fresh
k
er
osene.
No
Are fuel and f
ilt
er
clean
Ye
s
Check o-ring. If def
ectiv
e,
replace it.
No
Is fuel f
ilt
er
o-ring in
good
condition?
Ye
s
W
at
er condensation in fuel
tank
. Drain and f
ill with
fresh fuel.
Has nozzle been
check
ed f
or
block
age?
R
emo
v
e nozzle and clean
it with pressurized air
.
No
Ye
s
Ye
s
19
Is pum
p pressure set
to req
uirements?
Check f
or correct
pressure.
No
Ye
s
Does rela
y
receiv
e po
w
er
when heat
er
is plugged in?
Def
ectiv
e wiring or
electrical connection.
R
epair as needed.
No