Assessments - 5, GPA: 4.2
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clean, soft cloth. Not required, permanently lubricated. 10 TROUBLESHOOTING WARNING Never service heater while it is plugged in, operating, or hot. Severe burns and electrical shock can occur. Only a qualified service person should service and repair heater. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Motor does not start when heater is plugged in and thermostat setting is higher than surrounding air temperature. 1. No power or low voltage at heater due to: A) Damaged power cord or extension cord B) Wrong size extension cord C) Heater plugged into outlet with voltage lower than 220/240 volts 2. Loose electrical connections 3. Motor overload protector tripped due to: A) Dirty fan B) Debris pulled into fan area by fan C) Binding pump D) Low voltage 4. Burner control not reset 5. Damaged burner control 6. Damaged power relay 7. Damaged thermostat 8. Binding pump 1. A) Check condition of power cord or extension cord. Repair or replace if damaged. B) Use extension cord with proper wire size (see To Start Heater, page 8). C) Make sure heater is plugged into 220/240 volt, 50 hertz outlet. 2. Check connections. Tighten if loose. 3. A) See Fan Blades, page 14. B) Remove debris from fan and fan guard area. C) Turn fan by hand. If fan is hard to turn, see Pump, page 16. D) See steps B and C under item 1 above. Note: Be sure to reset motor overload protector by pressing reset button on top of motor. 4. Press and release burner control reset button. See Figure 4, page 8 for button location. 5. Replace burner control. 6. Replace power relay. 7. Replace thermostat. 8. Turn fan by hand. If fan is hard to turn, see Pump, page 16. 11 OBSERVED TROUBLE PROBLEM POSSIBLE CAUSE REMEDY SHOOTING Heater will not Continued ignite, but motor runs for a short period of time. 1. A) Fuel tank empty B) Water in fuel C) Wrong fuel 2. Dirt in nozzle 3. Very low temperature may cause fuel to thicken and not flow 4. Dirty fuel filters 5. Wrong pump pressure 6. Spark plug wire disconnected from plug 7. Spark plug problems due to: A) Wrong gap B) Plug wet with fuel C) Carbon deposits on plug D) Damaged plug 8. Solenoid valve not opening WARNING High Voltage! 9. Damaged electronic ignitor 1. A) Add fuel to tank. B) Check fuel tank for bubbles of water in bottom. If found, remove fuel (see Storage, page 9). Clean tank and fuel filters (see Fuel Filters, page 17). Fill with clean fuel. C) Remove wrong fuel (see Storage, page 9). Clean tank and fuel filters (see Fuel Filters, page 17). Fill with correct fuel. 2. Replace nozzle (see Nozzle, page 15). 3. Move heater to warmer place until fuel flows freely. 4. Clean fuel filters (see Fuel Filters, page 17). 5. Adjust pump pressure (see Pump Pressure Adjustment, page 16). 6. Connect spark plug wire to spark plug. 7. A) Adjust electrode gap to .055" (1.4 mm) (see Spark Plug, page 15). B) Clean fuel from spark plug with clean, soft cloth. C) Replace plug if heavily coated with carbon (see Spark Plug, page 15). D) Inspect plug for worn or eroded electrodes. If found, replace plug (see Spark Plug, page 15). 8. Check electrical connections and voltage to solenoid. If good, replace solenoid valve. 9. Replace electronic ignitor. 12 TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Heater ignites, but burner control shuts off heater after a short period of time. Heater burns, but puffs of smoke can be seen. Heater does not burn steady. Heater burns with odor. Heater smokes continuously. 1. Wrong pump pressure 2. Dirty fuel filters 3. Dirt in nozzle 4. Dirty photocell lens 5. Open or damaged photocell 6. Bad burner control 7. Damaged fan switch 1. Wrong pump pressure 2. A) Heater almost out of fuel B) Water condensation in fuel tank C) Wrong fuel 3. Dirty fuel filters 4. Air leak in suction system 5. Dirty nozzle 6. Low voltage causing motor to operate below rated speed 7. Loose fuel line 1. Adjust pump pressure (see Pump Pressure Adjustment, page 16). 2. Clean fuel filters (see Fuel Filters, page 17). 3. Replace nozzle (see Nozzle, page 15). 4. Clean photocell lens with clean, soft cloth. 5. Replace photocell. 6. Replace burner control. 7. Replace fan switch. 1. Adjust pump pressure ( see Pump Pressure Adjustment, page 16). 2. A) Add fuel to tank. B) Check fuel tank for bubbles of water in bottom. If found, remove fuel (see Storage, page 9). Clean tank and fuel filters (see Fuel Filters, page 17). Fill with clean fuel. C) Remove wrong fuel (see Storage, page 9). Clean tank and fuel filters (see Fuel Filters, page 17). Fill with correct fuel. 3. Clean fuel filters (see Fuel Filters, page 17). 4. Tighten all fuel line connections (see Fuel Lines, page 16). 5. Replace nozzle (see Nozzle, page 15). 6. Check voltage at heater. Voltage at heater should never be less than 198 volts. 7. Check and tighten all fuel line connections (see Fuel Lines, page 16). 13 SERVICE PROCEDURES Upper Shell Removal 1. Remove screws and lockwashers along each side and top of heater using 5/16" nut-driver. These screws attach u...