Install Instructions
CG
i
GAS-FIRED
wATER
BOILER-
sERIEs
a-
Boiler
Manual
llc
Troubleshooting - control module lights (cont.)
CHART
4-
FLAME & POWER lights flas
hm
g
-
Usually
indicates
flame
sensed
when
it
shouldn't
be
there
-
I&W
ARNING
I
Electrical shock
hazard-
Wherever you see & TURN OFF
POWER&
, follow the instructions. Failure to follow
instructions
co
uld resuk in severe personal injury, death,
or
substantial property damage.
Are
manual main
shutoff
valve
and
gas
valve open?
No
I I
Yes
+ +
.
Le
ave
ma
in manual gas
va
l
ve
closed .
.
T
um
off
power
to
the
bo
iler
at
service switch
or
brea
ke
r .
.
Turn
off
power to boiler at service
sw
itch
or
breaker.
.
Wait
at
least
45
seconds .
.
Wa
it
at
least
45
seconds .
.
T
um
on
power
to
bo
iler .
.
Turn on power to boiler .
.
Resta
rt
bo
iler, following Operating
instructions
in this
.
Restart boil
er
, following Operating
instructions
in this
manual (Sec
ti
on 9c).
manual (Section
9c)
.
.
Look through the pilot inspection port
to
see
if
t
he
pilot is
burning
dur
ing t
he
pre purge period (first 30 seconds
of
Do
FLAME
and
POWER lights still flash?
operation).
No
I
Yes
Is
pilot burning during prepurge period?
+
No
II
Yes
.
Replace control module .
.
Retes
t.
.
Replace
gas
valve .
.
Allow boiler to continue cycling .
.
Retest
bo
iler.
Are
FLAME
& POWER lights flashing?
Are
FLAME
and
POWER lights flashing?
No
Yes
No
Yes
•
• •
•
.
A.
TURN OFF
POWER&
.
Boiler
may
now
be
.
Replace control
.
Boiler should now
.
Replace control
to boiler at service switch
operating module. operate
normally. module.
or
breake
r.
normally.
.
Retes
t.
.
Original Hashing
.
Retes
t.
.
Open main manual
gas
.
Perform start-up FLAME lig
ht
valve.
procedures in caused by
gas
.
Turn on power to boiler
boil
er
manual to valve
not
at
service switch
or
ve
ri
fy
proper operating properly.
breaker.
operation.
.
Restart boil
er
per lighting
.
See normal
instructions.
sequence
of
.
Perform start-up
operation,
procedures in
bo
iler
Figure
30,
manual to verify proper
page 38.
operation.
Part Number
550-142-780/0712
57