Desa B350D, B600D owner manual Troubleshooting, Observed Problem Possible Cause Remedy

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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 in and thermostat setting is higher than surrounding air temperature

1.No power or low voltage at heater due to:

A)Damaged power cord or extension cord

B)Wrong size extension cord

C)Heater plugged into outlet with volt- age lower than 120 volt

2.Loose electrical connections

3.Motor overload protector tripped due to:

A)Dirty fan

B)Debris pulled into fan area by fan

C)Binding pump

D)Low voltage

4.Flame-out control not reset

5.Damaged flame-out control

6.Damaged power relay

7.Damaged thermostat

8.Binding pump

1.A) Check condition of power cord or ex tension cord. Repair or replace damaged

B)Use extension cord with proper wire size (see To Start Heater, page 5)

C)Make sure heater is plugged into 120 volt/60 hertz outlet

2.Check connections. Tighten if loose

3.A) See Fan Blades and Air Deflectors, page 10

B)Remove debris from fan and fan guard area

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.Press and release flame-out control re- set button. See Figure 4, page 5 for but- ton location

5.Replace flame-out control

6.Replace power relay

7.Replace thermostat

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 Fuelsventilation OperationOpening To Stop Heater Extension Cord Wire Size RequirementsStoring TRANSPORTING, or Shipping To Start HeaterHow Often Preventative Maintenance ScheduleObserved Problem Possible Cause Remedy TroubleshootingStoring, Transporting, or Shipping Adjust pump pressure see Pump Pres Nozzle Service ProceduresUpper Shell Removal Spark PlugProcedure 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 List600,000 BTU/HR NPC-1C Δ Motor and Pump Assembly 350,000 and 600,000 Btu/Hr Burner Head Assembly 350,000 and 600,000 Btu/Hr099507 Corporate Headquarters Limited WarrantyParts and Service Under Warranty Parts and Repair Service

B350D, B600D specifications

The Desa B350D and B600D are two cutting-edge heating appliances designed to meet modern demands for efficiency, performance, and user convenience. These models, known for their reliable heating capabilities, incorporate advanced technologies that enhance both functionality and comfort in various environments.

The Desa B350D is a mid-range option that is ideal for smaller spaces. It boasts a compact design that allows it to fit seamlessly into any room, while still delivering substantial heating power. The B350D features an adjustable thermostat, which gives users complete control over their heating needs. With a maximum output of 35,000 BTUs, it can effectively heat areas up to approximately 1,200 square feet. The unit is equipped with an innovative multi-fuel system that allows it to operate on natural gas, propane, or liquid fuel, providing versatility and convenience to users.

On the other hand, the Desa B600D is a more powerful option, designed for larger spaces requiring higher heating capacities. With an output capacity of 60,000 BTUs, it efficiently warms areas up to 2,000 square feet, making it a perfect choice for workshops, garages, or large living spaces. Just like its smaller counterpart, the B600D features a user-friendly adjustable thermostat for personalized comfort.

Both models integrate safety features such as a tilt switch, which automatically shuts off the unit if it is tipped over, ensuring peace of mind when in use. Additionally, these units are designed with a durable exterior that is built to withstand the rigors of frequent usage.

Energy efficiency is a critical consideration in today's eco-conscious market, and the Desa B350D and B600D deliver on this front as well. Both models feature an efficient burner system that maximizes fuel utilization, reducing overall consumption and lowering heating costs.

In terms of maintenance, both models are designed for easy access to components, allowing users to perform routine checks and maintenance without hassle. The user manuals provide clear instructions, ensuring that even those with minimal technical expertise can keep their units in optimal working condition.

In summary, the Desa B350D and B600D stand out in the heating appliance market for their powerful performance, versatile fuel options, and user-friendly features. Whether for residential or commercial applications, these models represent a reliable choice for those seeking efficient and effective heating solutions.