10553677For more information, visit www.desatech.comFor more information, visit www.desatech.comTROUBLESHOOTINGWARNING: Never service heater while it is pluggedin, operating, or hot. Severe burns and electricalshock can occur.REMEDY1. Check circuit breaker in electrical panel2. Turn thermostat knob to a higher setting3. Check all electrical connections. SeeWiring Diagrams, page 134. If fan does not turn freely, see Pump Ro-tor, page 125. Replace ignition control assembly6. Replace motor1. Fill tank with kerosene2. See Pump Pressure Adjustment, page 93. See Fuel Filter, page 94. See Nozzle Assembly, page 115. Drain and flush fuel tank with cleankerosene. See Storing, Transporting, orShipping, page 66. Check electrical connections. See Wir-ing Diagrams, page 137. Replace ignitor, see page 108. Replace ignition control assembly1. See Pump Pressure Adjustment, page 92. See Air Output, Air Intake, and Lint Fil-ters, page 83. See Fuel Filter, page 94. See Nozzle Assembly, page 115. Make sure photocell boot is properlyseated in bracket6. Clean photocell lens7. Check electrical connections. See Wir-ing Diagrams, page 138. Replace photocell9. Replace ignition control assemblyPOSSIBLE CAUSE1. No power to heater2. Thermostat setting is too low3. Bad electrical connection between mo-tor and ignition control assembly or ig-nition control assembly and power cord4. Binding pump rotor5. Defective ignition control assembly6. Defective motor1. No fuel in tank2. Pump pressure incorrect3. Dirty fuel filter4. Obstruction in nozzle5. Water in fuel tank6. Bad electrical connection between igni-tor and ignition control assembly7. Defective ignitor8. Defective ignition control assembly1. Pump pressure incorrect2. Dirty air intake, air output, and/or lintfilter3. Dirty fuel filter4. Obstruction in nozzle5. Photocell assembly not properly in-stalled (not seeing the flame)6. Dirty photocell lens7. Bad electrical connection between pho-tocell and ignition control assembly8. Defective photocell9. Defective ignition control assemblyFAULT CONDITIONMotor does not start five seconds after heateris plugged inMotor starts and runs but heater does notigniteHeater ignites but ignition control assemblyshuts heater off after a short period of timeWARNING: High voltage!WARNING: High voltage!WARNING: High voltage!TROUBLESHOOTING