Desa PROPANE CONSTRUCTION HEATERS Troubleshooting, Observed Fault Possible Cause Remedy

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100,000 Btu/Hr

PROPANE CONSTRUCTION HEATER

TROUBLESHOOTING

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

WARNING: Never service heater while it is plugged in, connected to propane supply, operating, or hot. Severe burns and electrical shock can occur.

OBSERVED FAULT

POSSIBLE CAUSE

REMEDY

Fan does not turn when heater is

1.

No electrical power to heater

1.

Check voltage to electrical outlet. If voltage is

plugged in.

 

 

 

good, check heater power cord for breaks.

 

2.

Fan hitting inside of heater shell

2.

Adjust motor/fan mount to keep fan from hitting

 

 

 

 

inside of heater shell. Bend fan mount if necessary.

 

3.

Fan blades bent

3.

Replace fan. See Fan, page 7.

 

4.

Defective motor

4.

Replace motor. See Motor, page 7.

Heater will not ignite

1. User did not follow installation or

 

operation instructions properly

 

2. No spark at ignitor. To test for spark,

 

follow step 8 under Ignitor, page 8. If

 

you see spark at ignitor, have heater

 

serviced by qualified service person.

 

If no spark seen:

 

A) Loose or disconnected ignitor wire

 

B) Wrong spark gap

 

C) Bad ignitor electrode

 

D) Bad spark transformer

1.Repeat installation and operation instructions. See Installation, page 4 and Operation, page 5.

2.A) Check ignitor wire. Tighten or reattach loose ignitor wire. See Figure 10, page 8 for ignitor wire location.

B)Set gap between ignitor electrode and target plate to .13"/.15".

C)Replace ignitor electrode. See Ignitor, page 8.

D)Replace spark transformer. See Spark Transformer, page 8.

Heater shuts down while running.

1.

Propane supply may be inadequate

1.

A) Refill tank.

 

 

 

 

B) Provide additional and/or larger tanks. See

 

 

 

 

Propane Supply, page 4.

 

2.

High surrounding air temperature

2.

This can happen when running heater in

 

 

causing thermal limit device to shut

 

temperatures above 85° F. Run heater in cooler

 

 

down heater.

 

temperatures.

 

3.

Restricted air flow

3.

Check heater inlet and outlet. Remove any

 

 

 

 

obstructions.

 

4.

Damaged fan

4.

Replace fan. See Fan, page 7.

 

5.

Excessive dust or debris in surrounding

5.

Clean heater. See Maintenance, page 5.

 

 

area

 

 

 

 

 

 

 

 

 

 

 

WARNING: Use only in areas free of

 

 

 

 

high dust content.

 

 

 

 

 

www.desatech.com

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102370-01H

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Contents Propane Construction Heaters Safety Information Propane Construction HeaterProduct Identification UnpackingTheory Operation Propane Supply Installation VentilationTo Start Heater MaintenanceStorage To Stop HeaterTroubleshooting Observed Fault Possible Cause RemedyService Procedures MotorFAN Spark Transformer AccessoriesTechnical Service IgnitorSpecifications Replacement PartsWiring Diagram Illustrated Parts Breakdown Parts List KEY Part Number Description QTYPropane Construction Heater Owners Registration Form Postage Required PROPANE/LP Forced AIR Heaters PROPANE/LP Convection Heaters GAS ChimeneasWarranty Service Warranty and Repair ServiceKeep this Warranty Limited Warranty Repair Service

PROPANE CONSTRUCTION HEATERS specifications

Desa propane construction heaters are an essential tool for contractors and builders, especially during cold weather conditions, providing a reliable and efficient heating solution on job sites. Known for their robust construction and advanced features, these heaters ensure that projects remain on schedule without the distractions of cold weather.

One of the standout features of Desa propane heaters is their portable design, making them easy to transport and position wherever heat is needed. This mobility is crucial on construction sites where workspaces are often changing and vary in size. Desa offers a range of models with varying heat outputs, allowing users to select the right heater based on the specific requirements of the job site.

These heaters utilize propane gas as their primary fuel source, allowing them to deliver immediate heat without the need for cords or electrical connections. This characteristic makes them particularly valuable in outdoor settings or in areas where electricity access is limited. Furthermore, propane is generally more cost-effective than electricity for heating large areas, thus providing significant savings over time.

Desa construction heaters also feature advanced safety mechanisms. Many models are equipped with built-in safety shut-off systems that activate in the event of low oxygen levels or overheating, ensuring a safe working environment. Additionally, the heaters often come with adjustable heat settings, allowing users to tailor the output to their specific needs, whether they require a gentle warmth or a robust heating solution.

The construction of Desa propane heaters is designed for durability. Made from high-quality materials, these heaters can withstand the rigors of outdoor use and resist corrosion and impacts. The stainless steel burners are designed for longevity and optimal performance, providing consistent heat generation over extended periods.

In terms of technology, most Desa propane heaters include features such as a thermostat for temperature regulation and a fan-forced design that distributes heat evenly across larger areas. This ensures that workers are kept comfortable, which can boost productivity and morale on the job site.

By choosing Desa propane construction heaters, contractors invest in a versatile and efficient heating solution that meets the demanding needs of construction projects. With their combination of portability, safety features, and durable design, Desa heaters stand out as a reliable choice for anyone looking to maintain a productive work environment in challenging weather conditions.