6105342100,000 Btu/HrPROPANE CONSTRUCTION HEATERTROUBLESHOOTING1. Check voltage to electrical outlet. If voltage isgood, check heater power cord for breaks.2. Adjust motor/fan mount to keep fan from hittinginside of heater shell. Bend fan mount if necessary.3. Replace fan. See Fan, page 7.4. Replace motor. See Motor, page 7.1. Repeat installation and operation instructions. SeeInstallation, page 4 and Operation, page 5.2. A) Check ignitor wire. Tighten or reattach looseignitor wire. See Figure 10, page 8 for ignitor wirelocation.B) Set gap between ignitor electrode and targetplate to .13"/.15".C) Replace ignitor electrode. See Ignitor, page 8.D) Replace spark transformer. See SparkTransformer, page 8.1. A) Refill tank.B) Provide additional and/or larger tanks. SeePropane Supply, page 4.2. This can happen when running heater intemperatures above 85°F. Run heater in coolertemperatures.3. Check heater inlet and outlet. Remove anyobstructions.4. Replace fan. See Fan, page 7.5. Clean heater. See Maintenance, page 5.WARNING: Use only in areas free ofhigh dust content.1. No electrical power to heater2. Fan hitting inside of heater shell3. Fan blades bent4. Defective motor1. User did not follow installation oroperation instructions properly2. No spark at ignitor. To test for spark,follow step 8 under Ignitor, page 8. Ifyou see spark at ignitor, have heaterserviced by qualified service person.If no spark seen:A) Loose or disconnected ignitor wireB) Wrong spark gapC) Bad ignitor electrodeD) Bad spark transformer1. Propane supply may be inadequate2. High surrounding air temperaturecausing thermal limit device to shutdown heater.3. Restricted air flow4. Damaged fan5. Excessive dust or debris in surroundingareaFan does not turn when heater isplugged in.Heater will not igniteHeater shuts down while running.OBSERVED FAULT POSSIBLE CAUSE REMEDYWARNING: Never service heater while it is plugged in, connected topropane supply, operating, or hot. Severe burns and electrical shock canoccur.Note: For additional help, visit DESAInternational’s Technical Service website at www.desatech.com.www.desatech.com