www.desatech.com 113282-01C8POSSIBLE CAUSE1. No fuel in tank2. Pump pressure incorrect3. Dirty fuel filter4. Obstruction in nozzle5. Water in fuel tank6. Bad electrical connection be-tween ignitor and ignition con-trol assembly7. Defective ignitor8. Defective ignition control as-sembly9. 200 Model Only: Defectivefuel valve (Models equippedwith fuel valve only)1. Pump pressure incorrect2. Dirty air intake, air output,and/or lint filter3. Dirty fuel filter4. Obstruction in nozzle5. Photocell assembly not properlyinstalled (not seeing the flame)6. Dirty photocell lens7. Bad electrical connection be-tween photocell and ignitioncontrol assembly8. Defective photocell9. Defective ignition control as-semblyREMEDY1. Fill tank with kerosene2. See Pump Pressure Adjust-ment, page 103. See Fuel Filter, page 104. See Nozzle Assembly, page 135. Drain and flush fuel tank withclean kerosene. See Storing,Transporting, or Shipping,page 66. Check electrical connections.See Wiring Diagrams, page 167. Replace ignitor, see page 118. Replace ignition control as-sembly9. See Fuel Valve, page 111. See Pump Pressure Adjust-ment, page 102. See Air Output, Air Intake, andLint Filters, page 93. See Fuel Filter, page 104. See Nozzle Assembly, page 135. Make sure photocell boot isproperly seated in bracket6. Clean photocell lens7. Check electrical connections.See Wiring Diagrams, page 168. Replace photocell9. Replace ignition control as-semblyFAULT CONDITIONMotor starts and runs but heaterdoes not igniteHeater ignites but ignition con-trol assembly shuts heater offafter a short period of timeWARNING: High voltage!TROUBLESHOOTINGContinuedWARNING: High voltage!