L.B. White Pilot - Manual (Page 42)

Pr
ob
lem 7
High limit s
witc
h is
open.
Is f
an loose
or dir
ty?
Ye
s
No
Ye
s
Ye
s
Ye
s
Ye
s
Tighten f
an wheel set
scre
w(s) to motor
shaft.
Blo
w f
an with
compressed air or
clean with soft br
ush.
Are
there restr
ictions
at air inlet or
outlets (such as
unappro
v
ed
ductw
or
k)?
On heaters without
air pro
ving s
witch, is
motor o
v
erheating
and shutting do
wn?
Ha
v
e
y
ou chec
k
ed f
o
r
proper gas type being used, pressure or f
o
r
liquid propane in line?
Chec
k b
uilding electr
ical
system.
Repair as
necessar
y.
See heater
nameplate f
o
r correct
v
oltage
.
Is
proper v
oltage
being supplied
to motor?
Is heater
reasonab
ly
clean?
Remo
v
e
restr
iction.
No
No
No
No
Giv
e heater a
thorough cleaning
with a soft br
ush or
compressed air
.
DO NO
T USE
W
A
TER
OR ANY LIQ
UID
CLEANING A
GENTS
.
No
Ye
s
Motor is def
ectiv
e
.
Replace
.
Clean motor housing.
Is motor dir
ty?
No
Chec
k f
or proper fuel and pressure on
nameplate of heater
.
Correct as necessar
y.
August 1999
5.1-8 8