20

TROUBLESHOOTING

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

 

 

 

 

 

One or both burner does not light after ODS/pilot

1.

Inlet gas pressure is too low

1.

Contact local natural or propane/LP gas com-

is lit

 

 

 

pany

 

2.

Burner orifice(s) clogged

2.

Clean burner(s) (see Cleaning and Mainte-

 

 

 

 

nance, page 18) or replace burner orifice(s)

 

 

 

3.

Contact qualified service person

 

3.

Mislocated crossover tube

4.

Replace burner orifice(s)

 

4.

Burner orifice(s) diameter is too small

5.

Put remote selector in ON position

 

5.

Remote selector in OFF position (Remote-

 

 

 

 

Ready Models Only)

6.

See Wiring Diagram, page 23

 

6.

Wire disconnected from gas control (Remote-

 

 

 

 

Ready Models Only)

 

 

 

 

 

 

 

Delayed ignition of burner

1.

Manifold pressure is too low

1.

Contact local natural or propane/LP gas com-

 

 

 

 

pany

 

2.

Burner orifice(s) clogged

2.

Clean burner(s) (see Cleaning and Mainte-

 

 

 

 

nance, page 18) or replace burner orifice(s)

 

 

 

3.

Contact qualified service person

 

3.

Mislocated crossover tube

 

 

 

 

 

 

 

Burner backfiring during combustion

1.

Burner orifice is clogged or damaged

1.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 18) or replace burner orifice

 

 

 

2.

Replace damaged burner

 

2.

Damaged burner

3.

Replace gas regulator

 

3.

Gas regulator defective

 

 

 

 

 

 

 

Orange flame in burner during burner com-

1.

Not enough air

1.

Check burner(s) for dirt and debris. If found,

bustion

 

 

 

clean burner(s) (see Cleaning and Mainte-

 

 

 

 

nance, page 18)

 

2.

Gas regulator defective

2.

Replace gas regulator

 

 

 

 

 

Slight smoke or odor during initial operation

1. Residues from manufacturing processes and

 

logs curing

1.Problem will stop after a few hours of opera- tion

Heater produces a whistling noise when burn-

1.

Turning control knob to HI position when burn-

1.

Turn control knob to LO position and let warm

ers are lit

 

ers are cold

 

up for a minute

 

2.

Air in gas line

2.

Operate burners until air is removed from

 

 

 

 

line. Have gas line checked by local natural

 

 

 

 

or propane/LP gas company

 

3.

Air passageways on heater blocked

3.

Observe minimum installation clearances (see

 

 

 

 

pages 7 through 10)

 

4.

Dirty or partially clogged burner orifice(s)

4.

Clean burners (see Cleaning and Mainte-

 

 

 

 

nance, page 18) or replace burner orifice(s)

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

1. When heated, vapors from furniture polish,

1. Turn heater off when using furniture polish,

wax, carpet cleaners, etc. turn into white

wax, carpet cleaners, or similar products

powder residue

 

Moisture/condensation noticed on windows

1. Not enough combustion/ventilation air

1. Refer to Air for Combustion and Ventilation

 

 

requirements (page 4)

For more information, visit www.desatech.com

114745-01

Page 20
Image 20
Desa VFRMV24NA, VFRMV18NA, VFRMV18PA installation manual Troubleshooting

VFRMV24NA, VFRMV18NA, VFRMV18PA specifications

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