OWNER’S MANUAL

TROUBLESHOOTING

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

FAULT CONDITION

POSSIBLE CAUSE

REMEDY

Motor does not start five seconds after heater 1. No power to heater is plugged in

1. Check circuit breaker in electrical panel

WARNING: High voltage!

 

 

2.

Bad electrical connection between motor

2.

Check all electrical connections. See

 

 

 

and ignition control assembly or ignition

 

Wiring Diagram, page 13

 

 

 

control assembly and power cord

 

 

 

 

 

 

3.

Blown fuse on ignition control assembly

3.

See Ignition Control Assembly, page 13

 

 

4.

Binding pump rotor

4.

If fan does not turn freely, see Pump

 

 

 

 

 

 

Rotor, page 12

 

 

5.

Defective ignition control assembly

5.

Replace ignition control assembly

 

 

6.

Defective motor

6.

Replace motor

 

 

 

 

 

 

 

 

 

 

Motor starts and runs but heater does not

1.

No fuel in tank

1.

Fill tank with kerosene

 

ignite

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

6.

Check electrical connections. See Wiring

 

 

 

ignitor and ignition control assembly

 

Diagram, page 13

 

 

7.

Defective ignitor

7.

Replace ignitor, see page 9

 

 

8.

Defective ignition control assembly

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

 

 

 

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 13

 

 

8.

Defective photocell

8.

Replace photocell

 

 

9.

Defective ignition control assembly

9.

Replace ignition control assembly

105843

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Desa D30H, D44H, D20H owner manual Troubleshooting