Desa H) AND VM42E(B installation manual Troubleshooting, Observed Problem Possible Cause Remedy

Page 20

20

TROUBLESHOOTING

TROUBLESHOOTING

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

Note: Before troubleshooting the system, make sure the gas shutoff valve is ON.

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 19)

 

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 19). 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

 

19) 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

2.

Thermopile not generating sufficient

2.

Recheck problems 1 and 2

 

 

voltage

 

 

 

 

 

 

 

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 more

 

visit www.

 

.com

108796-01D

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Contents For Your Safety Vent Decorative GAS FireplaceElectronic Ignition Natural GAS What to do if YOU Smell GASTable of Contents Safety InformationUnpacking M36EB,H/VM36EB,H M42EB,H/VM42EB,H IntroductionBefore YOU Begin Product Specifications ModelClearances PRE-INSTALLATION PreparationSelecting Location Mantel Clearances and Wall Details M36EB,H M42EB,HVM36EB,H VM42EB,H M36EB,H M42EB,H VM36EB,H VM42EB,HInstalling Transition Pipe and Starter Collar FramingVenting Installation Typical B-Vent ConfigurationChecking for Proper Venting Min Roof PitchInstallation Wall Switch InstallationOptional Remote Control GAS Line HOOK-UPEmber and PAN Material Placement OvertightenLOG Placement for M36E/VM36E Models Installing Logs 1LOG Placement for M42E/VM42E Models Installing Logs 1A, 1BAppliance Enclosure Installing Optional Glass Door AccessoryCombustion AIR KIT Model AK4 Optional Opening Vent Damper DoorFor Your Safety Read Before Lighting Operating FireplaceLighting Instructions To Turn OFF GAS To ApplianceCleaning Maintenance Inspecting BurnersService Hints Technical ServiceWiring Diagram Replacement PartsTroubleshooting Observed Problem Possible Cause RemedyTop Gas leak. See Warning statement atIllustrated Parts Breakdown VM42EB,H ModelsParts List VM36EB/VM42EBLogs for M36EB,H,M42EB,H, VM36EB,H and VM42EB,H Models Logset for M36EB,H and VM36EB,H ModelsAccessories Warranty Information

M36E, M42E, VM36E, VM42E, H) AND VM42E(B specifications

Desa M36E, M42E, VM36E, VM42E(H), and VM42E(B) are advanced heating solutions engineered for enhanced performance and versatility in both residential and commercial settings. These models stand out for their efficient heating capabilities and innovative designs, which cater to a variety of heating needs.

The Desa M36E and M42E models offer a robust heating output, making them ideal for larger spaces. The M36E boasts a compact structure that accommodates small to medium areas, while the M42E provides greater output suitable for bigger rooms. Both units are equipped with high-efficiency burners that ensure optimal fuel utilization, leading to significant cost savings over time.

The VM36E and VM42E(H) models take efficiency to the next level. Their advanced combustion technology maximizes heat production while minimizing emissions, aligning with modern environmental standards. The VM36E features a versatile design, allowing it to seamlessly integrate into various décor styles, while providing a steady flow of warm air. Meanwhile, the VM42E(H) is enhanced with a hybrid heating system, enabling users to switch between energy sources, which adds to its adaptability in differing climates or situations.

The VM42E(B) model introduces an innovative breakthrough in heating technology by incorporating smart control features. Users can effortlessly regulate their heating preferences through a smartphone application, allowing for remote management and programming based on individual schedules. This smart technology not only enhances user convenience but also supports energy conservation by promoting efficient usage patterns.

All models come equipped with safety features such as automatic shut-off mechanisms, ensuring peace of mind during operation. The units are designed with durable materials, capable of withstanding prolonged use while maintaining aesthetic appeal.

In summary, Desa's M36E, M42E, VM36E, VM42E(H), and VM42E(B) represent the forefront of modern heating solutions, combining high efficiency, innovative technologies, and user-friendly features. Their diverse applications, coupled with intelligent design, ensure they meet the evolving demands of today's consumers while providing warmth and comfort in any setting.
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