VENT-FREE RADIANT FLAME® HEATER

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

Burner does not light after ODS/pilot is lit

1.

Burner orifice is clogged

 

2.

Burner orifice diameter is too small

 

3.

Inlet gas pressure is too low

1.Clean burner (see Cleaning and Mainte- nance, page 20) or replace burner orifice

2.Replace burner orifice

3.Contact local propane/LP gas company

Delayed ignition of burner

1.

Manifold pressure is too low

1.

Contact local propane/LP gas company

 

2.

Burner orifice is clogged

2.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 20) or replace burner orifice

Burner backfiring during combustion

1.

Burner orifice is clogged or damaged

 

2.

Burner damaged

 

3.

Gas regulator defective

1.Clean burner (see Cleaning and Mainte- nance, page 20) or replace burner orifice

2.Replace burner

3.Replace gas regulator

Yellow flame during burner combustion

1.

Not enough air

 

2.

Gas regulator defective

1.Check burner for dirt and debris. If found, clean burner (see Cleaning and Maintenance, page 20)

2.Replace gas regulator

Slight smoke or odor during initial operation 1. Residues from manufacturing processes 1. Problem will stop after a few hours of operation

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 pro- pane/LP gas company

3.Observe minimum installation clear- ances (see Figure 10, page 9)

4.Clean burner (see Cleaning and Mainte- nance, page 20) or replace burner orifice

White powder residue forming within burner box or on adjacent walls or furniture

1.When heated, vapors from furniture pol- ish, wax, carpet cleaners, etc. turn into white powder residue

1.Turn heater off when using furniture polish, wax, carpet cleaners, or similar products

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Desa Tech RFP28TC installation manual Observed Problem Possible Cause

RFP28TC specifications

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