SERVICE MANUAL MODEL: SF-150 Service Manual SF-150 Ra3
Symptom 1. Will not start. Possible Cause Main electrical power circuit breaker tripped Optional thermostat turned down or improperly installed/defective Primary control safety tripped/defective Too much light showing on CAD cell/defective Tip switch contacts are closed 2.
Symptom Possible Cause 2. Attempts to fire but does not Elect rodes not sparking establish a flame - cont'd 3. Fires and then fails Only if fails contintually within 30 seconds Corrective Action Through front heat dome, look for sparking w hen t urning unit on. Clean or replace elect rodes. Clogged nozzle or defect ive fuel pump. Replace nozzle by removing burner from cone assembly. Or replace defect ive fuel pump. CAD cell is dirty Clean CAD cell with cloth. If issue still pursists see below.
Symptom 4. Fires and then fails Only if fails after at least 30 seconds with a flame Possible Cause Contaminated fuel supply Corrective Action Drain tank from side plug, clean, and fill with clean fuel. Dirty fuel filter Clean and replace filter Improper air flow causing a poor Adjust air band setting to 1.50 flame. The CAD cell may shut and test flame. See air band unit off with a poor flame. adjustement on Figure 3-1.
Symptom Possible Cause 9. No green light calling for heat Check the reset button when unit is turned on 10. Bad flame 11. Smoky flame Corrective Action Push and hold the reset button If using thermostat Defective Primary Clogged Nozzle See #8 above Replace primary Soak Nozzle in parts cleaner/degreaser and blow it out. Or replace nozzle. Dirty/poor fuel drain fuel and add new clean fuel.
HELPFUL SERVICE MANUAL IMAGES FIGURE 1-1 Burner Housing/Control Box Housing Screw Housing Screw FIGURE 1-2 Burner Pressure Valves Low Pressure Valve High Pressure Valve Note: Turn right for more fuel flow and left for less fuel. FIGURE 1-3 Igniter Assembly Retaining clamps Note: Loosen screws and turn clamps to open igniter assembly.
FIGURE 2-1 CAD Cell FIGURE 2-2 Inside igniter box CAD Cell Electrode Igniters Note: If there is excessive dust while running the SunFire, the inside area of the igniter box should be inspected and cleaned periodically. Dust can build and causing the unit to turn of prematurely from dust build up on the CAD cell, which will shut the unit off for safety as the flame will not be visible and the electrodes may not receive a proper spark If igniters are dirty. If dirty, simply clean with cloth.
FIGURE 3-1 Air Band Air Band Setting Note: The Air band should be set to approximately 1.25 - 1.5. Reducing the air band to a lower level will reduce the amount of airflow to the flame giving a higher concentration level of fuel that will raise the temperature of the SunFire. However, if reduced too low, it can cause whisking – see Figures 4-1&2 for examples. Reducing too low can become dangerous.
FIGURE 4-2 Primary Control Green LED Note: A green light that blinks indicates potential issues with the flame not running efficiently. Check symptoms and causes on previous pages. If green light remains solid, the flame is running correctly. If flame gets just a little worse, it will shut the heater off. It will auto-restart one more time and if it happens again,it will go in to lockout and you will need to hit the reset button to restart.
FIGURE 5-1 Minor Whisking Small flames escaping dome face Note: It is recommended to increase the air band setting to approximately 1.50 and reduce the fuel flow on the high pressure valve if necessary. FIGURE 5-2 Severe Whisking Large flames escaping dome face. Warning: This is can be dangerous at these levels. It is recommended to immediately increase the air band setting to approximately 1.50 and reduce the fuel flow on the high pressure valve.
FIGURE: 6-1 View Inside Cone of Nozzle/Flame Assembly Electrodes Air Flow Spinner Nozzle Burner Cone Note: It is important that the nozzle and electrodes remain free from excessive build-up. Clean if necessary or replace nozzle. It is critical to never run the unit without the burner cone in place to produce a proper flame.
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ITEM NO. PART NUMBER DESCRIPTION 1 29462 SUNFIRE DOME ASSEMBLY 2 34099 NUT 5/16-18 SERR FLANGE 3 29468 SUNFIRE RIGHT LOWER STRAP 4 34502 SCREW 3/8-16X1" HEX 5 34009 NUT 3/8-16 FLANGE 6 29463 SF-150 BURNER 7 34505 5/8 PUSH ON WHEEL RETAINER 8 29518 WHEEL 10X2.75 HUB2.
ITEM NO. PART NUMBER DESCRIPTION 1 29506 CAP GAUGE COMBO RAD HEAT 8" 2 29411 FTNG,JIC,ST,H,90EL06MJ-06MJ 3 29402 HEATER BAND FOR FUEL FILTER 4 29407 FTNG,JIC,ST,H,90EL06MJ-08MP 5 34447 1/4-20 x 3/8" 6 29401 FUEL FILTER ASSEMBLY 7 29511 SUCTION LINE HOSE 6" 8 29484 RAD HEAT TUBE DRAW ASSEMBLY 9 29467 SUNFIRE TANK ASSEMBLY 10 37500 FUEL FILTER REPLACEMENT PAGE 4 OF 8 BOTTOM HALF/QTY.
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ITEM NO. PART NUMBER DESCRIPTION QTY.
ITEM NO. PART NUMBER DESCRIPTION QTY.
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