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901273-01H
16
TroublesHooTIng
Continued
OBSERVED PROBLEM
POSSIBLE CAUSE
REMEDY
When ignitor button is pressed,
there is spark at pilot but no
ignition.
1. Gas supply turned off or
equipment shutoff valve
closed.
2. Control knob not in PILOT
position.
3. Control knob not pressed in
while in PILOT position.
4. Air in gas lines when in
-
stalled.
5. Pilot adjustment screw
closed.
6. Pilot is clogged.
7. Low gas pressure.
1. Turn on gas supply or open
equipment shutoff valve.
2. Turn control knob to PILOT
position.
3. Press in control knob while
in PILOT position.
4. Continue holding down con
-
trol knob. Repeat igniting op
-
eration until air is removed.
5. Adjust pilot flame for ap
-
proximately 2" blue flame.
6. Clean pilot (see
Cleaning
and Maintenance
, page 14)
or replace pilot assembly.
7. Replace gas control.
Pilot lights but flame goes
out when control knob is
released.
1. Control knob not fully
pressed in.
2. Control knob not pressed in
long enough.
3. Equipment shutoff valve not
fully open.
4. Pilot flame not touching
thermocouple, which al
-
lows thermocouple to cool,
causing pilot flame to go
out. This problem could be
caused by one or both of
the following:
A) Low gas pressure
B) Dirty or partially clogged
pilot
5. Thermocouple connection
loose at control valve.
6. Thermocouple damaged.
7. Control valve damaged.
1. Press in control knob fully.
2. After pilot lights, keep con
-
trol knob pressed in 30
seconds.
3. Fully open equipment shut
-
off valve.
4. A) Contact local natural gas
company.
B) Clean pilot (see
Cleaning
and Maintenance
, page 14)
or replace pilot assembly.
5. Hand tighten until snug, then
tighten 1/4 turn more.
6. Replace thermocouple.
7. Replace control valve.
Burner does not light after
pilot is lit.
1. Burner orifice clogged.
2. Inlet gas pressure is too
low.
3. Thermocouple leads dis
-
connected or improperly
connected.
1. Clean burner orifice.
2. Contact local natural or
propane/LP gas company.
3. Reconnect leads.
Delayed ignition burner.
1. Pilot flame needs adjust
-
ing.
2. Wrong pilot orifice.
1. Adjust pilot flame for ap
-
proximately 2" blue flame.
2. Replace pilot orifice set.
