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GAS RESIDENTIAL HEATERS
When gas pressure is too low
• pilot will not stay lit
• burner(s) will have delayed ignition
• heater will not produce specified heat
TROUBLESHOOTING
Continued
TECHNICAL
SERVICE
You may have further questions about in-
stallation, operation, or Trouble Shooting.
If so, contact DESA International’s Techni-
cal Service Department at 1-800-323-5190.
WARNING: If you smell gas
• Shut off gas supply.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any phone in your
building.
• Immediately call your gas supplier from a neighbor’s phone. Follow the
gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
IMPORTANT:
Operating heater where im-
purities in air exist may create odors. Clean-
ing supplies, paint, paint remover, cigarette
smoke, cements and glues, new carpet or
textiles, etc., create fumes. These fumes
may mix with combustion air and create
odors.
SERVICE HINTS
When gas quality is bad
• pilot will not stay lit
• burner(s) will produce flames and soot
• heater will backfire when lit
You may feel your gas pressure is too low or
gas quality is bad. If so, contact your local
natural gas supplier.
OBSERVED PROBLEM
Heater produces unwanted odors
Heater shuts off in use (ODS operates)
Gas odor even when control knob is in OFF
position
Gas odor during combustion
Moisture/condensation noticed on windows
POSSIBLE CAUSE
1. Heater burning vapors from paint, hair
spray, glues, etc., (see
IMPORTANT
statement above).
2. Gas leak. See Warning statement at top
of page.
1. Not enough fresh air is available
2. Low line pressure
3. ODS/pilot is partially clogged
1. Gas leak. See Warning statement at top
of page.
2. Control valve defective
1. Foreign matter between control valve
and burner
2. Gas leak. See Warning statement at top
of page.
1. Not enough combustion/ventilation air.
REMEDY
1. Ventilate room. Stop using odor-causing
products while heater is running
2. Locate and correct all leaks (see
Checking Gas Connections, page 9)
1. Refer to Air for Combustion and
Ventilation requirements (page 3)
2. Contact local natural gas company
3. Clean ODS/pilot (see Cleaning and
Maintenance, page 15)
1. Locate and correct all leaks (see
Checking Gas Connections, page 9)
2. Replace control valve
1. Take apart gas tubing and remove
foreign matter
2. Locate and correct all leaks (see
Checking Gas Connections, page 9)
1. Refer to Air for Combustion and Venti-
lation requirements (page 3)