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Wipe the cabinet to remove dust. CAUTION: You must keep control areas, burner and circulating air passagewaysofheater 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, pet hair, etc. WARNING: Failure to keep the primary air opening(s) of the burner(s) clean may result in sooting and property damage. 114683-01B TROUBLESHOOTING WARNING:Turnoffandunplugheaterandletcoolbeforeservicing. 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. Note: All troubleshooting items are listed in order of operation. OBSERVED PROBLEM POSSIBLE CAUSE REMEDY When ignitor button is pressed, there is no spark at ODS/pilot 1. Ignitor electrode positioned wrong 2. Ignitor electrode broken 3. Ignitor electrode not connected to ignitor cable 4. Ignitor cable pinched or wet 5. Broken ignitor cable 6. Bad piezo ignitor 1. Replace pilot assembly 2. Replace pilot assembly 3. Reconnect ignitor cable 4. Free ignitor cable if pinched by any metal or tubing. Keep ignitor cable dry 5. Replace ignitor cable 6. Replace piezo ignitor When ignitor button is pressed, there is spark at ODS/pilot but no ignition 1. Gas supply turned off or equipment shutoff valve closed 2. Control knob not in PILOT position 3. Control knob not pressed in while in PILOT position 4. Air in gas lines when installed 5. Depleted gas supply (propane/ LP gas only) 6. ODS/pilot is clogged 7. Gas regulator setting is not correct 1. Turn on gas supply or open equipment shutoff valve 2. Turn control knob to PILOT position 3. Press in control knob while in PILOT position 4. Continue holding down control knob. Repeat igniting operation until air is removed 5. Contact local propane/LP gas company 6. Clean ODS/pilot (see Cleaning and Maintenance, page 19) or replace ODS/pilot assembly 7. Replace gas regulator 114683-01B TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY ODS/pilot lights but flame goes out when control knob is released 1. Control knob not fully pressed in 2. Control knob not pressed in long enough 3. Safety interlock system has been triggered 4. Equipment shutoff valve not fully open 5. Thermocouple connection loose at control valve 6. Pilot flame not touching thermocouple, which allows thermocouple to cool, causing pilot flame to go out. This problem could be caused by one or both of the following: A) Low gas pressure B) Dirty or partially clogged ODS/pilot 7. Thermocouple damaged 8. Control valve damaged 1. Press in control knob fully 2. AfterODS/pilotlights,keepcontrol knob pressed in 30 seconds 3. Wait one minute for safety interlock system to reset. Repeat ignition operation 4. Fully open equipment shutoff valve 5. Hand tighten until snug, then tighten 1/4 turn more 6. A) Contact local natural or propane/LP gas company B) Clean ODS/pilot (see Cleaning and Maintenance, page 19) or replace ODS/pilot assembly 7. Replace pilot assembly 8. Replace control valve Burner does not light after ODS/ 1. Burner orifice is clogged 1. Clean burner (see Cleaning pilot is lit and Maintenance, page 19) or replace burner orifice 2. Inlet gas pressure is too low 2. Contact local natural or pro- pane/LP gas company Delayed ignition of burner 1. Manifold pressure is too low 1. Contact local natural or pro- pane/LP gas company 2. Burner orifice is clogged 2. Clean burner (see Cleaning and Maintenance, page 19) or replace burner orifice Burner backfiring during com-1. Burner orifice is clogged or 1. Clean burner (see Cleaning bustion damaged and Maintenance, page 19) or replace burner orifice 2. Burner damaged 2. Replace burner 3. Gas regulator defective 3. Replace gas regulator 114683-01B TROUBLESHOOTING Continued OBSERVED PROBLEM POSSIBLE CAUSE REMEDY Yellow flame during burner 1. Not enough air 1. Check burner for dirt and combustion debris. If found, clean burner (see Cleaning and Maintenance, page 19) 2. Gas regulator defective 2. Replace gas regulator 3. Clogged or dirty burner 3. Clean burner (see Cleaning and Maintenance, page 19) Slightsmokeorodorduringinitial 1. Residues from manufacturing 1. Problem will stop after a few operation processes hours of operation Heaterproducesawhistlingnoise 1. Turning control knob to 5 when burner is lit position when burner is cold 2. Air in gas line 3. Air passageways on heater blocked 4. Dirty or partially clogged burner orifice 1. Turn control knob to 1 position and let warm up for a minute 2. Operate burner until air is removed from line. Have gas line checked by local natural or propane/LP gas company 3. Observe minimum installation clearances (see Figure 4, page 8) 4. Clean burner (see Cleaning and Maintenance, page 19) or replace burner orifice White powder residue forming 1. When heated, vapors from...

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