17
TROUBLESHOOTING
N
O
I
T
C
A
E
V
I
T
C
E
R
R
O
C
E
S
U
A
C
E
L
B
I
S
S
O
P
M
E
L
B
O
R
P
Pilot won’t light
Pilot won’t stay lit
Burner won’t light
Burner flame is low
Thick black smoke
1. Natural gas valve is close
1. Open valve
2. Blockage in orifice or pilot tube
3. Air in gas line
4. Low gas pressure with natural gas valve
fully open
5. Igniter fails
1. Gas pressure is low
2. Blockage in orifice
3. Control knob is not in ON position
1. Gas pressure is low
4. Control knob fully ON
1. Blockage in burner
1. Remove blockage and clean
burner inside and outside
4. Check burner and orifices for
3. Clean burner and orifices
blockage
2. Outdoor temperature is less than 40ºF and
is less than 1/4 full
1. Turn natural gas valve OFF and
replacegas valve
2. Use a full natural gas valve
3. Turn control knob to ON
1. Dirt built up around pilot
2. Connection between gas valve and pilot
assembly is loose
3. Thermocouple is not operating correctly
2. Clean or replace orifice or pilot
tube
3. Open gas line and bleed it
(pressing control knob in) for not
more than 1 - 2 minutes or until
you smell gas
4. Turn natural gas valve OFF and
replace gas valve
5 .Use match to light pilot; obtain new
igniter and replace
1. Clean dirt from around pilot
2. Tighten connection and perform
leak check
3. Replace thermocouple
1. Turn natural gas valve OFF and
replace gas valve
2. Clear blockage
Note: Heater operates
at reduced efficiency
below 40ºF(5ºC)
3.Spiders and insects nest in burner or orifices.
Carbon build-up
1
.
Dirt or film on reflector and burner screen
1.Clean reflector and burner screen
