L.B. White I-34 Infraconic Pilot Ignition - Manual (Page 24)

24
Problem 6 Heater does not Operate from Main Burner to Pilot Only.
D
o
En
vir
onment Contr
ol
Thermostat Contacts Open
and Close? (P
er
form
Continuity Che
ck
.
R
eplace Thermostat.
Def
ectiv
e Solenoid V
alv
e on Zone
Panel, or Debris is Lodged in Plunger of Solenoid. R
eplace
Solenoid V
alv
e Assembly
.
No
Ye
s
Heater Backflashes Gas Through Air Inlet. Problem 5
Is Inner
Cone Seam
F
ractured or is Tip
Damaged or
Missing?
R
eplace Combustion Cone.
Ye
s
No
Are
Inject
or
Body
, Burner
Orif
ice,Filt
er
, V
enturi
Tube, or Inner Cone
Par
tially Plugged with
Dir
t?
Clean these Com
ponents.
No
Is Pr
oper
Gas Pressure
Being Supplied t
o
the Heat
er?
Check f
or Pr
oper
Gas Pressure.
Pr
oper Pressure at
High Heat Should
R
ead 5 PSIG.
Ye
s
No
Combustion Cone KitS
Par
t
N
umbeR
2
1
088
Ye
s
Are Burner Assembly
N
uts Loose?
Ye
s
Tight
en the N
uts
Is the Burner
Plat
e or Burner Gask
et
Crack
ed?
Ye
s
R
eplace the Burner
Plat
e.or Gask
et
No No
Is Inner Cone
W
eld Seam
Aligned t
o
Burner Plat
e
No
tch?
No
P
osition the Inner Cone W
eld Seam in Burner
Plat
e No
tch.