28

TROUBLESHOOTING

TROUBLESHOOTING

Note: For additional help, visit DESA’s technical service web site at www.desatech.com.

Note: Beforetroubleshootingthesystem, make sure the gas shutoff valve is ON.

WARNING: Turn off heater

 

CAUTION: Never use a wire,

and let cool before servicing. Only

 

needle, or similar object to

a qualified service person should

 

clean pilot. This can damage

service and repair heater.

 

pilot unit.

 

 

 

The two most common causes of a malfunctioning gas appliance are:

1.Loose wiring connections

2.Construction debris clogging the pilot and/or gas control valve filter

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

Ignitor will not spark or pilot will not light

1.

No gas supply, or shutoff valve is OFF

1.

Check to see if you have gas supply and

 

 

 

 

that equipment shutoff valve is opened

 

2.

Air in gas line

2.

Repeat lighting procedure several times

 

 

 

 

to purge all air out of lines. If after re-

 

 

 

 

peated attempts appliance does not light,

 

 

 

 

call for qualified service and repair.

 

3.

Construction debris clogging pilot orifice

3.

Remove debris and dirt, inspect and

 

 

 

 

clean any other possible obstructions

 

4.

Low gas pressure

4.

Contact your gas supplier to check

 

 

 

 

pressure

 

5.

Kinked pilot line

5.

Have a qualified technician replace pi-

 

 

 

 

lot line

 

6.

Control valve knob is not opening

6.

Replace control valve (Refer to Replace-

 

 

 

 

ment Parts, page 34)

 

7.

No power to unit or the ignition module

7.

Check that main power is on and that all

 

 

or power transformer is bad

 

wire connections are made correctly to

 

 

 

 

the ignition model (see Wiring Diagram,

 

 

 

 

page 24). Check for 24 VAC at the sec-

 

 

 

 

ondary side of the transformer. If 24

 

 

 

 

VAC is present, and the module does not

 

 

 

 

oporate, have the module replaced oth-

 

 

 

 

erwise have the transformer replaced.

 

8.

Vent damper not fully open

8.

Open vent damper until fully locked in

 

 

 

 

OPEN position

 

 

 

 

 

Pilot will not stay lit

1.

Loose wiring on ignitor wire to ignition

1.

Check wiring connection. Refer to wir-

 

 

module and/or poor ground to ignition

 

ing diagram (see Wiring Diagram, page

 

 

module

 

24) and/or check ground wire to igni-

 

 

 

 

tion module

 

2.

Pilot flame too low to sense

2.

Clean and adjust pilot burner and check

 

 

 

 

gas supply and inlet pressure to unit

 

 

 

Note: Have a qualified technician replace

 

 

 

pilot assembly if broken or corroded

 

 

 

 

 

No gas to burner, although wall switch and

1.

Wall switch wires defective or too long

1.

Check electrical connections

valve are set to the ON position

 

 

 

 

 

 

 

 

 

Frequent pilot outage

1.

Pilot flame may be too low, causing

1.

Clean and adjust pilot flame for maximum

 

 

safety pilot to “drop out”

 

flame impingement on thermopile

 

2.

Improper venting or excessive blockage

2.

Have the vent system inspected, includ-

 

 

 

 

ing the termination cap. Remove any

 

 

 

 

restriction or obstruction

For

 

.

 

.com

111907-01D

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Desa VV42ENB(1), VV42EPB(1), V42EN-A, V42EP-A installation manual Troubleshooting, Observed Problem Possible Cause Remedy
Page 27 Page 29

V42EN-A, VV42EPB(1), V42EP-A, VV42ENB(1) specifications

Desa VV42ENB(1), VV42EPB(1), V42EN-A, and V42EP-A are innovative products designed to enhance residential heating and hot water solutions. These units are a part of a modern era in energy-efficient home appliances that aim to provide comfort while minimizing environmental impact.

The VV42ENB(1) and VV42EPB(1) models are particularly notable for their energy efficiency. They incorporate advanced technology that significantly reduces energy consumption compared to traditional heating systems. The VV42ENB(1), which operates using natural gas, is designed for environments where gas is readily available, while the VV42EPB(1) utilizes propane, making it ideal for areas without natural gas supply. The flexibility in fuel sources provides homeowners with more options tailored to their specific needs.

Both models are equipped with a high-efficiency burner that optimizes fuel combustion, ensuring efficient heat transfer and reduced greenhouse gas emissions. The integrated smart thermostat feature allows users to program their heating schedules, which not only enhances comfort but also contributes to energy conservation by reducing wastage when the home is unoccupied.

Transitioning to the V42EN-A and V42EP-A models, these units are designed to cater to different heating requirements. Featuring advanced electronic ignition systems, they provide reliable operation with minimal maintenance requirements. The aesthetic design of these models allows them to blend seamlessly into any home decor while the durable materials ensure longevity and resilience under various conditions.

Furthermore, the V42EN-A and V42EP-A models come with enhanced safety features, including auto shut-off systems and flame failure devices that protect against unintended incidents. Homeowners can trust that these units will operate safely and efficiently.

In summary, the Desa VV42ENB(1), VV42EPB(1), V42EN-A, and V42EP-A are remarkable advancements in home heating technology. Their focus on energy efficiency, user-friendly features, and safety makes them a perfect choice for modern households looking to enhance comfort while maintaining a commitment to sustainability. With options for different fuels and advanced functionalities, they stand as a testament to innovation in the heating industry. These models promise not only to keep homes warm but also to do so in an environmentally responsible manner.
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