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TROUBLE SHOOTING
PROBLEM
CA US
E
ACTION
PILOT
LIGHTS BUT
1.
NOT ENOUGH GAS FLOW
•
~~E PILOT
LINE GAS
BLOWS OUT
12
I
;(AIRR..OW
•
llf1
ILJST Pit OT
AIR
aow
3.
UNSTEADY
IGNITION ARC
•
~c:_I5.~~RK
PLUG
TIP
TO
PILOT FLAME
IS
1.
TOO MUCH
GAS FLOW
•
REDUCE PILOT LINE GAS
YELLOW OR SMOKEY
~~
2.
UNSTEADY
IGNITlON
ARC
•
~C:I5.~~K PLUG
TIP
TO
"FLAME
ON"
LIGHT
t
',,..
AMP!
IFlFR
•
CHECk
AND/OR RFPI
A(;F
DOES
NOT COME
ON
BUT
THERE
12
c;c;,
·~
·~
'~
INCORRECT
.
~-
IS
FLAME IN THE
FIRING TUBE
3.
TOO MUCH
AIR FLOW IN
.
REDUCE AIR
FLOW
BY
SCANNER TUBE
PARTIALLY
BLOCKING
AIR
4.
dlVE~/
·
..
~
•
CHECK
•
·~
·~-
!:!!=PI
llf"l=
5.
OBSTRUCTED SIGHT TUBE
.
CLEAN
BURNER
WILL
NOT
1.
NO
NATURAL GAS
TO BURNER
.
OPEN
NATURAL
GAS
IGNITE
AFTER PILOT
MANUAL
VALVES.
•
CHECK ELECTRIC SHUT
-OFF
VALI..ffi
2.
BURNER NOT
GETIING
•
CHECK
NATURAL
GAS
ENOUGH
GAS
REGULATOR
AND
ADJUST
.
ADJUST
GAS
VALVE
SETIING
BURNER LIGHTS BUT
1
0
LOW FIRE HOLD
•
LET
BOILER
'WARM
UP"
WILL NOT MODULATE
WHEN
PTENTIOMETER
IS
TURNED
TO
OPEN
2.
FAULTY WIRING
IN
MOD
MOTOR
•
CHECK
&
REWIRE OR
REPLACE
OR
POTENIOMETER
BURNER
UNSTABLE
1.
INCORRECT
AXIAL AIR DAMPER
.
ADJUST THE
VALUE LISTED
IN
::,t:
I
IINl:l
RRFTFSTRFPORT
2.
OXYGEN LEVEL TOO HIGH
.
INCREASE
GAS
1
~W
.
'
AlAR
Ia
'-~1RECT
ROll FR
ORIFI(;F
•
t:x::l:l
~
4.
BLOCKED
AIR
FLOW
•
REMOVEOBSTAU~T~~
.
VFNTll
ATF ROll FR
5.
INCORRECT
DRAFT
.
ADJUST
DRAFT CONTROL
.
REMOVE OBSTRUCTION
IN STACK
Section
8 - Trouble Shooting
29
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