Desa D44N Dirty fuel filter, Obstruction in nozzle assembly, ON/OFF switch light remains on Filter

Page 7

OWNER’S MANUAL

TROUBLESHOOTING

Continued

FAULT CONDITION

POSSIBLE CAUSE

REMEDY

Motor starts and runs but heater does not

1.

No fuel in tank

1.

Fill tank with kerosene

ignite (ON/OFF switch light remains on)

2.

Pump pressure incorrect

2.

See Pump Pressure Adjustment, page 10

 

3.

Dirty fuel filter

3.

See Fuel Filter, page 8

 

4.

Obstruction in nozzle assembly

4.

See Nozzle Assembly, page 11

 

5.

Water in fuel tank

5.

Drain and flush fuel tank with clean

 

 

 

 

kerosene. See Storing, Transporting, or

 

 

 

 

Shipping, page 6

WARNING: High voltage!

6.Bad electrical connection between ignitor and ignition control assembly

7.Defective ignitor

8.Defective ignition control assembly

6.Check electrical connections. See Wiring Diagram, page 21

7.Replace ignitor, see page 9

8.Replace ignition control assembly

Heater ignites but ignition control assembly

1.

Pump pressure incorrect

1.

See Pump Pressure Adjustment, page 10

shuts heater off after a short period of time

2.

Dirty air intake, air output, and/or lint

2.

See Air Output, Air Intake, and Lint

(ON/OFF switch light remains on)

 

filter

 

Filters, page 10

 

3.

Dirty fuel filter

3.

See Fuel Filter, page 8

 

4.

Obstruction in nozzle assembly

4.

See Nozzle Assembly, page 11

 

5.

Photocell assembly not properly

5.

Make sure photocell boot is properly

 

 

installed (not seeing the flame)

 

seated in bracket

 

 

 

 

 

 

 

 

WARNING: High voltage!

 

 

 

 

 

 

 

 

 

6.

Dirty photocell lens

6.

Clean photocell lens

 

7.

Bad electrical connection between

7.

Check electrical connections. See Wiring

 

 

photocell and ignition control assembly

 

Diagram, page 21

 

8.

Defective photocell

8.

Replace photocell

 

9.

Defective ignition control assembly

9.

Replace ignition control assembly

 

 

 

 

 

 

 

ON/OFF switch light does not come on

1.

No power to heater

1.

Verify that power cord is plugged into

when switch is turned to the ON(I) position

 

 

 

 

an electrical outlet and that the circuit

and heater does not start

 

 

 

 

breaker in the electral panel is reset

 

 

 

 

 

 

 

WARNING: High voltage!

 

 

 

 

 

 

 

 

 

2.

Bad electrical connections

2.

Check electrical wiring and connections.

 

 

 

 

 

See Wiring Diagram, page 21

 

3.

Electrical short in ignitor

3.

Check ignitor wiring. If no problems are

 

 

 

 

 

found, replace ignitor (see page 9)

 

 

 

 

 

 

 

ON/OFF switch light comes on when switch 1. Electrical short in motor is turned to the ON(I) Position but turns off

after five seconds

1.Check motor wiring. If no problems are found, replace motor

WARNING: High voltage!

105843

7

Image 7
Contents Portable Forced AIR Heaters D20N, D30N and D44N Models Portable Forced AIR Heaters Safety InformationFuels Product Identification UnpackingVentilation AssemblyTools Needed To Start Heater To Reset HeaterExtension Cord Wire Size Requirements Theory OperationSchedule Preventative MaintenanceTroubleshooting Storing TRANSPORTING, or ShippingPhotocell and ignition control assembly Obstruction in nozzle assemblyWater in fuel tank Drain and flush fuel tank with clean ON/OFF switch light remains on FilterD20N Model Service ProceduresUpper Shell Removal Fuel FilterIgnitor Disconnecting Ignitor Wires from Ignition Control AssemblyAIR OUTPUT, AIR INTAKE, and Lint Filters Pump Pressure AdjustmentFuel and AIR Line Replacement Proper Routing Nozzle AssemblyPump Rotor Procedure if Rotor is BindingFAN Ignition Control AssemblyRemove Old Assembly Installing the New AssemblyIllustrated Parts Breakdown Motor and Pump AssemblyD20N Model Number Description QTY Parts ListD30N Model KEY Part Number Description QTY D44N Model Desired part D44N ModelNTC-3C Wheels and HandlesAccessories SpecificationsWiring Diagram EC Conformity Declaration EC Conformity Declaration105843 Warranty Information

D30N, D44N, D20N specifications

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