25107570OWNER’S MANUALFor more information, visit www.desatech.comOBSERVED PROBLEMHeater produces a whistling noise whenburner is litWhen ignitor button is pressed, there is nospark at ODS/pilot (manual ignition mode)When ignitor button is pressed, there isspark at ODS/pilot but no ignition (manualignition mode)ODS/pilot lights but flame goes out whencontrol knob is released (manual ignitionmode)BREMEDY1. Turn control knob to LO position andlet warm up for a minute2. Operate burner until air is removed fromline. Have gas line checked by local pro-pane/LP gas company3. Observe minimum installation clear-ances (see pages 8 through 10)4. Clean burner (see Cleaning and Mainte-nance, page 23) or replace burner orifice1. Reconnect ignitor cable2. Free ignitor cable if pinched by anymetal or tubing. Keep ignitor cable dry3. Tighten nut holding piezo ignitor to basepanel of log set. Nut is located behindbase panel4. Replace ignitor cable5. Replace piezo ignitor6. Replace piezo ignitor7. Replace piezo ignitor and bracket1. Turn on gas supply or open equipmentshutoff valve2. Turn control knob to PILOT position fullcounterclockwise3. Continue holding control knob in fullcounterclockwise position. Repeatigniting operation until air is removed4. Clean ODS/pilot (see Cleaning andMaintenance, page 23) or replace ODS/pilot assembly5. Replace gas regulator1. Turn control knob fully counterclock-wise2. After ODS/pilot lights, hold controlknob for 30 seconds3. Fully open equipment shutoff valve4. A) Contact local propane/LP gas com-panyB) Clean ODS/pilot (see Cleaning andMaintenance, page 23) or replace ODS/pilot assembly5. Hand tighten until snug, then tighten1/4 turn more6. Replace pilot assembly7. Replace control valveTROUBLESHOOTINGContinuedPOSSIBLE CAUSE1. Turning control knob to HI positionwhen burner is cold2. Air in gas line3. Air passageways on heater blocked4. Dirty or partially clogged burner orifice1. Ignitor electrode not connected to igni-tor cable2. Ignitor cable pinched or wet3. Piezo ignitor nut is loose4. Broken ignitor cable5. Bad piezo ignitor6. Ignitor electrode broken7. Ignitor electrode positioned wrong1. Gas supply turned off or equipmentshutoff valve closed2. Control knob not in PILOT position3. Air in gas lines when installed4. ODS/pilot is clogged5. Gas regulator setting is not correct1. Control knob not fully turned counter-clockwise2. Control knob not held long enough3. Equipment shutoff valve not fully open4. Pilot flame not touching thermocouple,which allows thermocouple to cool,causing pilot flame to go out. This prob-lem could be caused by one or both ofthe following:A) Low gas pressureB) Dirty or partially clogged OD S/pilot5. Thermocouple connection loose at con-trol valve6. Thermocouple damaged7. Control valve damagedwww.desatech.com Continued