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Keep control knob pressed in for 10 seconds after lighting pilot. After 10 seconds, release control knob. • If control knob does not pop up when released, contact a qualified service person or gas supplier for repairs. Note: If pilot goes out, repeat steps 3 through 7. 18 OPERATING HEATER Continued TO SELECT HEATING LEVEL WARNING When running heater, set control knob at LOW, MEDIUM, or HIGH locked positions. Never set control knob between locked positions. Poor combustion may result. CAUTION Do not try to adjust heating levels by using the manual shutoff valve. 1. Slightly press in control knob and turn counterclockwise to the LOW, MEDIUM, or HIGH positions. IMPORTANT:Release downward pressure while turning control knob. Control knob will lock at the desired position. Control Knob CGN18RA CGN30D OFF PILOT IGN LOW LOW OFF PILOT IGN MED MED OFF PILOT IGN HIGH HIGH OFF OFF Figure 17 - Burner Patterns Continued 19 OPERATING HEATER Continued INSPECTING BURNER TO TURN OFF GAS TO APPLIANCE Shutting Off Heater 1. Turn control knob clockwise to the OFF position. 2. Turn off all electric power to the appliance if service is to be performed. Shutting Off Burner Only (pilot stays lit) 1. Turn control knob clockwise to the PILOT position. MANUAL LIGHTING PROCEDURE 1. Follow steps 1 through 6 under Lighting Instructions, pages 17 and 18. 2. With control knob pressed in, strike match. Hold match to pilot until pilot lights. 3. Keep control knob pressed in for 10 seconds after lighting pilot. After 10 seconds, release control knob. Check pilot flame pattern and burner flame pattern often. PILOT FLAME PATTERN Figure 18 shows a correct pilot flame pattern. Figure 19 shows an incorrect pilot flame pattern. The incorrect pilot flame is not touching the thermocouple. This will cause the thermocouple to cool. When the thermocouple cools, the heater will shut down. Thermocouple Pilot Burner Figure 18 - Correct Pilot Flame Pattern Thermocouple Pilot Burner Figure 19 - Incorrect Pilot Flame Pattern If pilot flame pattern is incorrect, as shown in Figure 19 • turn heater off (see To Turn Off Gas to Appliance, above) • see Troubleshooting, pages 22 through 25 20 INSPECTING BURNER Continued BURNER FLAME PATTERN Figure 20 shows a correct burner flame pattern. Figure 21 shows an incorrect burner flame pattern. Figure 20 - Correct Burner Flame Pattern Figure 21 - Incorrect Burner Flame Pattern If burner flame pattern is incorrect, as shown in Figure 21 • turn heater off (see To Turn Off Gas to Appliance, page 20) • see Troubleshooting, pages 22 through 25 21 CLEANING AND MAINTENANCE TROUBLESHOOTING Note: All troubleshooting items are listed in order of operation. WARNING Turn off heater and let cool before cleaning. CAUTION You must keep control areas, burner, and circulating air passageways of heater clean. Inspect these areas of heater before each use. Have heater inspected yearly by a qualified service person. Heater may need more frequent cleaning due to excessive lint from carpeting, bedding material, etc. ODS/PILOT AND BURNER ORIFICE • Use a vacuum cleaner, pressurized air, or small, soft bristled brush to clean. CABINET Air Passageways • Use a vacuum cleaner or pressurized air to clean. Exterior • Use a soft cloth dampened with a mild soap and water mixture. Wipe the cabinet to remove dust. WARNING Turn off and unplug heater and let cool before servicing. Only a qualified service person should service and repair heater. CAUTION Never use a wire, needle, or similar object to clean ODS/pilot. This can damage ODS/pilot unit. OBSERVED POSSIBLE PROBLEM CAUSE REMEDY When control knob is 1. Ignitor electrode not con1. Reconnect ignitor cable pressed in and turned nected to ignitor cable to the PILOT/IGN 2. Piezo ignitor nut is loose 2. Tighten nut holding position, there is no piezo ignitor to base spark at ODS/pilot panel of log set. Nut is located behind base panel. 3. Ignitor cable pinched or 3. Free ignitor cable if wet pinched by any metal or tubing. Keep ignitor cable dry 4. Broken ignitor cable 4. Replace ignitor cable 5. Bad piezo ignitor 5. Replace piezo ignitor 6. Ignitor electrode broken 6. Replace ignitor 7. Ignitor electrode posi7. Replace ignitor tioned wrong 22 TROUBLESHOOTING Continued OBSERVED POSSIBLE PROBLEM CAUSE REMEDY When control knob is pressed in and turned to the PILOT/IGN position, there is spark at ODS/pilot but no ignition ODS/pilot lights but flame goes out when control knob is released 1. Gas supply turned off or manual shutoff valve closed 2. Control knob not pressed in while being turned to PILOT/IGN position 3. Air in gas lines when installed 4. ODS/pilot is clogged 5. Gas regulator setting is not correct 1. Control knob not fully pressed in 2. Control knob not pressed in long enough 3. Manual shutoff valve not fully open 4. Thermocouple connection loose at control valve 5. Pilot flame not touching thermocouple, which allows thermocouple to cool, causing pilot flame to go out. This problem could be cause...
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