12
Installation Instructions and Owner’s Manual
Unvented Natural Gas Fired Room Heater
TROUBLESHOOTING
NOTE:
All troubleshooting items are listed in order of operation and likely occurrence.
WARNING:
Only a qualified service person should service and repair heater.
CAUTION:
Never use a wire needle, or similar object to clean ODS/pilot. This can damage ODS/pilot unit.
Make sure grille guard is in place before running heater. If screen or grille guard is removed for servicing it must be
replaced prior to operating the heater.
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 you 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 impurities in air exist may create odors. Cleaning 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 and possible discoloration of walls and ceilings.
OBSERVED SYMPTOM
POSSIBLE CAUSE
REMEDY
When ignitor button is pressed in,
there is a spark at the ODS/pilot but no
ignition
1. Control knob not fully pressed in.
2. Control knob not pressed in long enough
3. Equipment shutoff valve not fully open
4. Thermocouple connection loose at control valve
5. Pilot flame not touching thermocouple, which
allows thermocouple to cool, causing 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 ODS/pilot
6. Thermocouple damaged
7. Control valve damaged
1. Press in control knob fully
2. After ODS/pilot lights, keep control knob
pressed in for 30 seconds
3. Fully open equipment shutoff valve
4. Hand tighten thermocouple nut until snug, and
then tighten 1/4 turn more.
5. Clean ODS/pilot (see Cleaning and
Maintenance, page 11).
6. Replace thermocouple
7. Replace Control valve.
8. Contact local gas company
Burner does not light after ODS/pilot
is lit
1. Burner orifice is clogged
2. Burner orifice diameter to small
3. Inlet gas pressure is too low
1. Clean burner orifice (see Cleaning and
Maintenance on page 11), or replace burner
orifice
2. Replace burner orifice
3. Contact local gas company
Delayed ignition of burner
1. Manifold pressure is too low
2. Burner orifice is clogged
1. Contact local gas company
2. Clean burner orifice (see Cleaning and
Maintenance on page 11), or replace burner
orifice
Burner backfiring during operation
1. Burner orifice is clogged or damaged
2. Burner damaged
3. Gas regulator defective
1. Clean burner orifice (see Cleaning and
Maintenance on page 11), or replace burner
orifice
2. Replace burner
3. Replace gas regulator
Burner plaque(s) does not glow [Infra
-
red Only]
1. Plaque damaged
2. Control knob set between locked positions.
3. Inlet gas pressure is too low
1. Replace burner
2. Turn control knob until it locks at desired set
-
ting.
3. Replace gas regulator
Slight smoke or odor during initial
operation
1. Residues from manufacturing process
1. Problem will stop after a few hours of opera
-
tion
Heater produces a whistling noise when
burner is lit
1. Turning 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.
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 line checked by local gas company.
3. Observe minimum installation clearances (see
Figure 4 page6)
4. Clean burner orifice (see Cleaning and
Maintenance on page 11), or replace burner
orifice.
