Desa REM10PT RH10PT Owner's Operation And Installation Manual page 14

TROUBLESHOOTING
14
TROUBLESHOOTING
Continued
OBSERVED PROBLEM
Burner does not light after ODS/pilot is lit
Delayed ignition of burner
Burner backfiring during combustion
Yellow flame during burner combustion
Slight smoke or odor during initial operation
Heater produces a whistling noise when
burner is lit
For more information, visit www.desatech.com
For more information, visit www.desatech.com
POSSIBLE CAUSE
1. Burner orifice is clogged
2. Inlet gas pressure is too low
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. Turn control knob to HI position when
burner is cold
2. Air in gas line
3. Air passageways on heater blocked
4. Dirty or partially clogged burner orifice
REMEDY
1. Clean burner orifice (see Cleaning and
Maintenance, page 12) or replace burner
orifice
2. Contact local propane/LP gas company
1. Contact local propane/LP gas company
2. Clean burner orifice (see Cleaning and
Maintenance, page 12) or replace burner
orifice
1. Clean burner orifice (see Cleaning and
Maintenance, page 12) 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 12)
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 LO position and
let warm up for a minute
2. Operate burner until air is removed
from line. Have gas checked by local
propane/LP gas company
3. Observe minimum installation clear-
ances (see Figure 2, page 4)
4. Clean burner (see Cleaning and Mainte-
nance, page 12) or replace burner orifice
110373-01D