Desa SB350D, SB600D owner manual Troubleshooting, Observed Problem Possible Cause Remedy

Page 7

OWNER’S MANUAL

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, operating, or hot. Severe burns and electrical shock can occur. Only a qualified service person should service and repair heater.

OBSERVED PROBLEM

POSSIBLE CAUSE

REMEDY

Motor does not start when heater is plugged

1.

No power or low voltage at heater due to:

1.

A) Check condition of power cord or

in and thermostat setting is higher than

 

A) Damaged power cord or extension

 

extension cord. Repair or replace if dam-

surrounding air temperature

 

cord

 

aged

 

 

B) Wrong size extension cord

 

B) Use extension cord with proper wire

 

 

C) Heater plugged into outlet with volt-

 

size (see To Start Heater, page 5)

 

 

age lower than 120 volt

 

C) Make sure heater is plugged into 120

 

 

 

 

volt/60 hertz outlet

 

2.

Loose electrical connections

2.

Check connections. Tighten if loose

 

3.

Motor overload protector tripped due to:

3.

A) See Fan Blades and Air Deflectors,

 

 

A) Dirty fan

 

page 10

 

 

B) Debris pulled into fan area by fan

 

B) Remove debris from fan and fan

 

 

C) Binding pump

 

guard area

 

 

D) Low voltage

 

C) Turn fan by hand. If fan is hard to

 

 

 

 

turn, see Pump, page 11

 

 

 

 

D) See steps B and C under item 1 above

 

 

 

 

Note: Be sure to reset motor overload

 

 

 

 

protector by pressing reset button on top

 

 

 

 

of motor

 

4.

Flame-out control not reset

4.

Press and release flame-out control re-

 

 

 

 

set button. See Figure 4, page 5 for but-

 

 

 

 

ton location

 

5.

Damaged flame-out control

5.

Replace flame-out control

 

6.

Damaged power relay

6.

Replace power relay

 

7.

Damaged thermostat

7.

Replace thermostat

 

8.

Binding pump

8.

Turn fan by hand. If fan is hard to turn,

 

 

 

 

see Pump, page 11

www.desatech.com

Continued

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Contents High Pressure Portable Forced AIR Heaters Fueling Safety InformationUnpacking Product IdentificationFresh Air Opening Requirements Theory OperationFuels VentilationTo Restart Heater Storing TRANSPORTING, or ShippingTo Start Heater To Stop HeaterHow Often Preventative Maintenance ScheduleObserved Problem Possible Cause Remedy TroubleshootingTransporting, or Shipping, Sure Adjustment, Upper Shell Removal Service ProceduresFan Blades and Air Deflectors NozzleProcedure if Pump is Binding Pump Pressure AdjustmentPump Tank Fuel Filter Procedure for tightening fuel linesFuel Lines Fuel FiltersAccessory SpecificationsWiring Diagram Maintenance KitsIllustrated Parts Breakdown Description QTY Parts ListSB600D 600,000 BTU/HR NPC-1C Motor and Pump Assembly 350,000 and 600,000 Btu/Hr Burner Head Assembly 350,000 and 600,000 Btu/Hr106029 Corporate Headquarters Warranty and Repair Service

SB350D, SB600D specifications

The Desa SB350D and SB600D are modern heating solutions designed to cater to both residential and commercial needs. These models showcase a blend of advanced technology and user-friendly features, making them reliable choices for efficient heating.

One of the standout features of the Desa SB350D and SB600D is their high efficiency. With advanced combustion technology, these units can achieve a notable thermal efficiency rating. This means that they convert a larger percentage of fuel into usable heat, reducing energy costs and minimizing environmental impact.

Both models are equipped with a robust safety system. The automatic shut-off mechanism is a key element, ensuring that the heater will turn off in case of overheating, providing peace of mind for users. Additionally, they incorporate a low oxygen safety shutoff, which will turn the unit off if oxygen levels drop below a safe threshold, making them suitable for use in various environments.

Another important characteristic of the Desa SB350D and SB600D is their versatility. These heaters can efficiently operate using multiple fuel sources, including propane and natural gas. This flexibility allows users to choose a fuel type that best suits their needs and availability. Furthermore, both models feature an adjustable thermostat that enables users to easily control the temperature, ensuring optimal comfort at all times.

Design plays a crucial role in the appeal of these units. The SB350D and SB600D come with a sleek and modern aesthetic that can seamlessly blend into various settings, from homes to commercial spaces. Their compact size allows for easy placement without sacrificing heating performance.

Installation is made effortless with these models. The Desa SB350D and SB600D come with detailed instructions and can be installed in a variety of configurations, including wall-mounted or freestanding options. This adaptability enhances their usability across different spaces.

In terms of durability, the construction of both units is solid, designed to withstand the rigors of daily use. Their materials are chosen for longevity, ensuring that users can rely on these heaters season after season.

Overall, the Desa SB350D and SB600D are exemplary choices for those seeking an efficient, versatile, and reliable heating solution. With their blend of safety features, fuel flexibility, and attractive design, they meet the demands of modern heating while providing exceptional performance.
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