Desa LCF24 - Manual (Page 14)

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TROUBLESHOOTING
Continued
POSSIBLE CAUSE
1. Gas supply turned off or equip-
ment 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. 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 allows
thermocouple to cool, caus-
ing 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. Burner orifice clogged
2. Inlet gas pressure is too low
3. Thermocouple leads dis-
connected or improperly
connected
1. Pilot flame needs adjusting
2. Wrong pilot orifice
OBSERVED PROBLEM
When ignitor button is pressed,
there is spark at pilot but no igni-
tion (GA9050A Only)
Pilot lights but flame goes out
when control knob is released
(GA9050A Only)
Burner does not light after pilot
is lit (GA9050A Only)
Delayed ignition burner
(GA9050A Only)
REMEDY
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 control
knob. Repeat igniting opera-
tion until air is removed
5. Adjust pilot flame for approxi-
mately 2" blue flame
6. Clean pilot (see Cleaning and
Maintenance, page 12) or
replace pilot assembly
7. Replace gas control
1. Press in control knob fully
2. After pilot lights, keep control
knob pressed in 30 seconds
3. Fully open equipment shutoff
valve
4. A) Contact local natural gas
company
B) Clean pilot (see Cleaning
and Maintenance, page 12) or
replace pilot assembly
5. Hand tighten until snug, then
tighten 1/4 turn more
6. Replace thermocouple
7. Replace control valve
1. Clean burner orifice
2. Contact local natural gas
company
3. Reconnect leads
1. Adjust pilot flame for approxi-
mately 2" blue flame
2. Replace pilot orifice set