Lennox GWM-050IE, Installation Instructions Manual

Page: 53 / 84

53
In
sp
ect bu
rne
r thro
ugh
sigh
t
gl
as
s.
Is
fla
m
e
pr
es
en
t?
NO
YE
S
_ P _ _ _
Blocking Error E 3 5 Fals
e flame detect
Replace
Control
Module
Turn Ga
s Sh
utoff
Va
lv
e clockw
ise to
c
lo
sed pos
ition.
Follow instructi
o
ns
TO TURN OFF
G
A
S
TO APPLIANCE.
Rep
la
ce Gas
Va
lv
e.
Turn of
f manual
gas
shutoff
v
alv
e.
Follow
instructions
TO TURN OFF GA
S
TO
APPLIANCE. R
epla
ce
Gas V
alv
e.
Follow
Oper
ating Instructions
to initiate boiler oper
ation.
Enter
Installer Menu, B
oiler
Status,
Flame
Signal.
Is flame signal greater than
3.7µA
(Boiler ma
y be
running at an
y
firing
rate)?
YES
NO
Replace Control
Module
Replace Flame
Sensor and Burner
13 - TROUBLE SHOOTING