Desa Tech HEATERS OWNER'S MANUAL Troubleshooting, Observed Problem Possible Cause Remedy

Page 8

TROUBLESHOOTING

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

1. No power or low voltage at

1.

A) Check condition of power

is plugged in and thermostat set-

 

heater due to:

 

cord or extension cord. Repair

ting is higher than surrounding

 

A) Damaged power cord or

 

or replace if damaged

air temperature

 

extension cord

 

B) Use extension cord with

 

 

B) Wrong size extension cord

 

proper wire size (see To Start

 

 

C) Heater plugged into outlet

 

Heater, page 5 )

 

 

with voltage lower than 120

 

C) Make sure heater is plugged

 

 

volt

 

into 120 volt/60 hertz outlet

 

2.

Loose electrical connections

2.

Check connections. Tighten if

 

3.

Motor overload protector

 

loose

 

3.

A) See Fan Blades and Air

 

 

tripped due to:

 

Deflectors, page 11

 

 

A) Dirty fan

 

B) Remove debris from fan

 

 

B) Debris pulled into fan area

 

and fan guard area

 

 

by fan

 

C) Turn fan by hand. If fan is

 

 

C) Binding pump

 

hard to turn, see Pump, page 13

 

 

D) Low voltage

 

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 reset button. See

 

 

 

 

Figure 4, page 5 for button

 

 

 

 

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 13

8

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110098-01G

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Contents Table of Contents Safety Information Follow all local ordinances and codes when using heaterProduct Identification UnpackingFresh Air Opening Requirements Theory of OperationFuels Operation To Start HeaterTo Stop Heater To Restart HeaterSTORING, Transporting of Shipping Portable GeneratorPreventative Maintenance Schedule How Often How ToTroubleshooting Observed Problem Possible Cause RemedyDamaged electronic ignitor Pump Pressure Adjustment Service Procedures Upper Shell RemovalSpark Plug FAN Blades and AIR DeflectorsAdjusting Pump Pressure Pump Procedure if Pump is Binding Fuel LinesFuel Filters Tank Fuel FilterFor Heaters With Fuel Filter/Canister External To Pump For Heaters With Fuel Filter Internal To PumpMaintenance Kits Technical ServiceAccessory Replacement PartsIllustrated Parts Breakdown Models B350D, SB350D and R350AParts List NTC-4CModels B600D, SB600D and R600A NTC-4C Illustrated Parts Breakdown and Parts List Burner Head Assembly 350,000 and 600,000 BTU/HRNPF-5C Motor and Pump Assembly 350,000 and 600,000 BTU/HR For Heaters With Fuel Filter/Canister External To Pump350,000 Btu/Hr SpecificationsWiring Diagram Warranty and Repair Services Warranty Service

Tech HEATERS OWNER'S MANUAL specifications

Desa Tech heaters are renowned for their advanced heating solutions that combine efficiency, safety, and user-friendly features. This owner’s manual serves as a comprehensive guide to the main features, technologies, and characteristics of Desa Tech heaters, ensuring users can maximize their heating experience while maintaining optimal safety and performance.

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In summary, the Desa Tech heater owner’s manual outlines the essential features and technologies that make these heating solutions a popular choice. With a focus on efficiency, safety, and user convenience, users can enjoy a warm and comfortable environment while minimizing their impact on the planet and keeping energy costs in check. By adhering to the guidelines in this manual, users can maximize the benefits of their Desa Tech heater for years to come.