OWNER’S MANUAL

TROUBLESHOOTING

Continued

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

Burner does not light after ODS/pilot is lit

1.

Burner orifice is clogged

1.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 19) or replace burner orifice

 

2.

Inlet gas pressure is too low

2.

Contact local natural gas company

 

 

 

 

 

Delayed ignition of burner

1.

Manifold pressure is too low

1.

Contact local natural gas company

 

2.

Burner orifice is clogged

2.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 19) or replace burner orifice

 

 

 

 

 

Burner backfiring during combustion

1.

Burner orifice is clogged or damaged

1.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 19) or replace burner orifice

 

2.

Burner damaged

2.

Replace burner pressure

 

3.

Low inlet gas pressure

3.

Contact local natural gas company

 

4.

Gas regulator defective

4.

Replace gas regulator

 

 

 

 

 

Yellow flame during burner combustion

1.

Not enough air

1.

Check burner for dirt and debris. If

 

 

 

 

found, clean burner (see Cleaning and

 

 

 

 

Maintenance, page 19)

 

2.

Gas regulator defective

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

 

 

 

 

 

Fireplace produces a whistling noise when

1.

Turning control knob to HI position

1.

Turn control knob to LO position and

burner is lit

 

when burner is cold

 

let 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

 

 

 

 

natural gas company

 

3.

Air passageways on fireplace blocked

3.

Observe minimum installation clear-

 

 

 

 

ances (see pages 8 through 10)

 

4.

Dirty or partially clogged burner orifice

4.

Clean burner (see Cleaning and Mainte-

 

 

 

 

nance, page 19) 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. may turn into white powder residue

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

www.desatech.com

Continued

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Desa VMH26TNB installation manual Maintenance

VMH26TNB specifications

The Desa VMH26TNB is a versatile and innovative heating appliance designed to meet the demands of modern home environments. This unit combines cutting-edge technology with practical features to provide efficient heating solutions for various spaces.

One of the key highlights of the VMH26TNB is its impressive heat output. With a powerful capacity, it can effectively heat large areas, making it ideal for living rooms, open-concept spaces, or even commercial settings. Its heating efficiency is bolstered by the incorporation of advanced thermal conduction materials that ensure maximum warmth with minimal energy consumption.

Another notable feature of the Desa VMH26TNB is its user-friendly control system. Equipped with a digital thermostat, this model allows users to set their desired temperature with precision. The intuitive interface provides real-time feedback, enabling users to monitor their energy usage and adjust settings accordingly for optimal comfort.

The VMH26TNB is also designed with safety in mind. It includes multiple safety features, such as overheat protection and a tip-over switch that automatically shuts off the unit in case it tips over. These features are crucial in preventing accidents, making this heater a reliable addition to any home.

In terms of technology, the Desa VMH26TNB stands out with its energy-efficient operation, which is compliant with modern energy standards. It uses a combination of infrared and convection heating methods that distribute warmth evenly throughout the room. This dual heating technology not only enhances comfort but also reduces energy costs.

Additionally, the unit is designed with aesthetics in mind. Its sleek and contemporary design allows it to blend seamlessly with various interior styles, making it not just a functional appliance but also an attractive element of home decor.

Lastly, ease of maintenance is another characteristic that enhances the desirability of the VMH26TNB. Its filter is easily accessible for cleaning, ensuring that the device operates at peak performance over time.

In summary, the Desa VMH26TNB is a powerful, efficient, and safe heating solution that caters to modern heating needs while providing style and convenience. Its blend of advanced technology and thoughtful design makes it an excellent choice for both residential and commercial applications.