OWNER’S MANUAL

TROUBLESHOOTING

Continued

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 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.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

Heater produces unwanted odors

1.

Heater burning vapors from paint, hair

1.

Ventilate room. Stop using odor caus-

 

 

spray, glues, etc. See IMPORTANT

 

ing products while heater is running

 

 

statement above

 

 

 

2.

Gas leak. See Warning statement at

2.

Locate and correct all leaks (see Check-

 

 

top of page

 

ing Gas Connections, page 11)

 

 

 

 

 

Heater shuts off in use (ODS operates)

1.

Not enough fresh air is available

1.

Open window and/or door for ventilation

 

2.

Low line pressure

2.

Contact local natural gas company

 

3.

ODS/pilot is partially clogged

3.

Clean ODS/pilot (see Cleaning and

 

 

 

 

Maintenance, page 14)

 

 

 

 

 

Gas odor even when control knob is in OFF

1.

Gas leak. See Warning statement at

1.

Locate and correct all leaks (see Check-

position

 

top of page

 

ing Gas Connections, page 11)

 

2.

Control valve defective

2.

Replace control valve

 

 

 

 

 

Gas odor during combustion

1.

Foreign matter between control valve

1.

Take apart gas tubing and remove for-

 

 

and burner

 

eign matter

 

2.

Gas leak. See Warning statement at

2.

Locate and correct all leaks (see Check-

 

 

top of page

 

ing Gas Connections, page 11)

 

 

 

 

 

Moisture/condensation noticed on windows

1.

Not enough combustion/ventilation air

1.

Refer to Fresh Air for Combustion and

 

 

 

 

Ventilation requirements (page 4)

www.desatech.com

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Vanguard Heating VN1800ITB, VN2550ITB installation manual Heater produces unwanted odors

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