Draper 04174, Manual

12. TROUBLESHOOTING

12.1  TROUBLESHOOTING GUIDE

Problem

Possible Cause

Solution

Heater fires, but Main PCB 

shuts heater off after a short 

period of time. Lamp is 

flickering.

1. Incorrect pump pressure. 

1. Adjust Pump Pressure 

(page 17).

2. Dirty Input, Output or  

Lint Filter. 

2. Clean/replace Air Filter 

(page 15).

3. Dirty Fuel Filter .

3. Clean/replace Fuel Filter 

(page 16).

4. Nozzle is Dirty. 

4. Clean/replace Nozzle 

(page 15).

5. Photocell lens is Dirty. 

5. Clean/replace Photocell 

(page 16).

6. Photocell not installed 

properly. 

6. Adjust Photocell position 

(page 16).

7. Photocell Defective. 

7. Replace Photocell  

(page 16).

8. Improper electrical 

connection between  

Main PCB and Photocell. 

8. Check wiring connections 

(page 18).

Heater will not operate, or 

motor runs for short time. 

Lamp flickers.

1. No fuel in fuel tank. 

1. Fill tank with fresh 

kerosene.

2. Incorrect pump pressure. 

2. Adjust Pump Pressure 

(page 17).

3. Corroded Spark Plug or 

incorrect plug gap. 

3. Clean/replace Spark Plug 

(page 16).

4. Dirty Fuel Filter. 

4. Clean/replace Fuel Filter 

(page 16).

5. Dirty Nozzle. 

5. Clean/replace Nozzle 

(page 15).

6. Moisture in Fuel/Fuel Tank. 

6. Rinse out fuel tank with 

clean fresh kerosene.

7. Improper electrical 

connection between 

Transformer and Circuit 

Board.

7. Inspect all electrical 

connections. See Wiring 

Diagrams (page 18).

8. Ignitor Wire not connected 

to Spark Plug. 

8. Re-attach Ignitor wire to 

Spark Plug (page 16).

9. Defective Ignitor. 

9. Replace Ignitor.

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