OWNER’S MANUAL

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

Burner does not light after ODS/pilot is lit

1.

Burner orifice clogged

1.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 15) or replace burner orifice

 

2.

Inlet gas pressure is too low

2.

Contact local natural gas company

 

3.

Burner orifice diameter is too small

3.

Replace burner orifice

 

4.

Thermopile leads disconnected or im-

4.

Reconnect leads (see wiring diagram)

 

 

properly connected

 

 

 

5. Burners will not come on in remote position

5.

Replace battery in transmitter and receiver

 

 

 

 

 

Delayed ignition burner

1.

Manifold pressure is too low

1.

Contact local natural gas company

 

2.

Burner orifice clogged

2.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 15) or replace burner orifice

 

 

 

 

 

Burner backfiring during combustion

1.

Burner orifice is clogged or damaged

1.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 15) or replace burner orifice

 

2.

Damaged burner

2.

Replace damaged burner

 

3.

Gas regulator defective

3.

Replace gas control

 

 

 

 

 

Slight smoke or odor during initial operation

1.

Not enough air

1.

Check burner for dirt and debris. If found,

 

 

 

 

clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 15)

 

2.

Gas regulator defective

2.

Replace gas control

 

3.

Residues from manufacturing processes

3.

Problem will stop after a few hours of

 

 

and logs curing

 

operation

 

 

 

 

 

Moisture/condensation noticed on windows

1.

Not enough combustion/ventilation air

1.

Refer to Air for Combustion and Ventila-

 

 

 

 

tion requirements (page 4)

 

 

 

 

 

Heater produces a whistling noise when

1.

Turning control knob to HI position when

1.

Turn control knob to LO position and let

burner is lit

 

burner is cold

 

warm up for a minute

 

2.

Air in gas line

2.

Operate burner until air is removed from

 

 

 

 

line. Have gas line checked by local natu-

 

 

 

 

ral gas company

 

3.

Air passageways on heater blocked

3.

Observe minimum installation clearances

 

 

 

 

(see pages 7 through 9)

 

4.

Dirty or partially clogged burner orifice

4.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 15) or replace burner orifice

 

 

 

 

 

Dark residue on logs or inside of fireplace

1.

Improper log placement

1.

Properly locate logs (see Installing Logs,

 

 

 

 

page 10)

 

2.

Drafts or other air currents affecting

2.

Eliminate source of drafts around heater

 

 

flame pattern

 

 

 

3.

Air holes at burner inlet blocked

3.

Clean out air holes at burner inlet. Peri-

 

 

 

 

odically repeat as needed

 

4.

Burner flame holes blocked

4.

Remove blockage or replace burner

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 pol- ish, wax, carpet cleaners, or similar products

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Continued

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17

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Desa Tech S39NT installation manual Nance
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