G—G770BGJ 100% Lockout, Microprocessor-Based Intermittent Pilot Ignition Control 11
Start
E n d
C o rre ct
Y e s
N o
Y e s
N o
N o
Y e s
Y e s
N o
Y e s
No
N o
Y e s
2 4 V A C
p re se n t b e tw e e n
T H S 2 a n d
g ro u n d ?
C h e ck fo r d e fe ctive tra n sfo rm e r,
th e rm o sta t, o r fa u lty w irin g .
O p e n th e rm o sta t co n ta cts fo r
3 0 se co n d s a n d th e n clo se .
S yste m w a s in lo cko u t. C a u se s
in clu d e fla m e o u t o r a n in te rn a l fa u lt.
Is
sp a rk p re se n t
n o w ?
R e p la ce g a s
va lve .
D id
p ilo t re m a in lit
fro m p re vio u s
cycle ?
T u rn o ff
su p p ly
vo lta g e .
Is sp a rk
ca b le se cu re ly
co n n e cte d to ig n itio n
co n tro l?
Is
s p a rk ca b le
b rittle , b u rn t, o r
cra cke d ?
Is sp a rk
e le ctro d e ce ra m ic
cra cke d ?
R e p la ce p ilo t
b u rn e r.
R e p la ce
ca b le .
Is sp a rk
g a p p e r m a n u fa ctu re r's
sp e cifica tio n s a n d
lo ca te d in p ilo t g a s
stre a m ?
R e p la ce
co n tro l.
C o rre ct o r
re p la ce p ilo t
b u rn e r.
Y e s
N o
Figure 5: No Spark, and System Does Not Work