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103569
OWNER’S MANUAL
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
Delayed ignition of burner
Burner backfiring during combustion
Yellow flame during burner combustion
Slight smoke or odor during initial opera-
tion
Heater produces a whistling noise when
burner is lit
POSSIBLE CAUSE
1. Manifold pressure is too low
2. Burner orifice is clogged
1. Burner orifice is clogged or damaged
2. Inlet gas pressure is too low
3. Burner damaged
4. Gas regulator defective
1. Not enough air
2. Inlet gas pressure is too low
3. Gas regulator defective
1. Residues from manufacturing processes
1. Turning control knob to HIGH position
when burner is cold
2. Air in gas line
3. Air passageways on heater blocked
4. Dirty or partially clogged burner ori-
fice
Continued
REMEDY
1. Contact local propane/LP gas company
2. Clean burner (see Cleaning and Main-
tenance, page 15) or replace burner
orifice
1. Clean burner (see Cleaning and Main-
tenance, page 15) or replace burner
orifice
2. Contact local propane/LP gas company
3. Replace burner
4. Replace gas regulator
1. Check burner for dirt and debris. If
found, clean burner (see Cleaning and
Maintenance, page 15)
2. Contact local propane/LP gas company
3. Replace gas regulator
1. Problem will stop after a few hours of
operation
1. Turn control knob to LOW position
and let warm up for a minute
2. Operate burner until air is removed
from line. Have gas line checked by
local propane/LP gas company
3. Observe minimum installation clear-
ances (see Figure 4, page 6)
4. Clean burner (see Cleaning and Main-
tenance, page 15) or replace burner
orifice