Troubleshooting
Unitdoesnotwork
Unitrunscontinuously
Elementsareonbutmotordoesnot
rotate
Enclosureisextremelyhot
Desiredroomtemperaturecannotbereached
Overheating
WARNING: USE ONLY MANUFACTURER'S REPLACEMENT PARTS. USE OF ANY OTHER PARTS COULD CAUSE INJURY OR
DEATH. REPLACEMENT PARTS ARE ONLY AVAILABLE DIRECT FROM THE FACTORY AND MUST BE INSTALLED BY A QUALIFIED
SERVICE AGENCY.
WIRING DIAGRAM MH165FAET
•Defectivethermostatorwrongthermostatsetting
•Opencircuitbreakerorfuse
•Thermaloverloadswitchhasbeentripped
•Damagedordefectiveplugoroutlet
•Defectivethermostatorwrongthermostatsetting
•Heatlosseshigherthanunitcapacity(unitundersized)
•DefectiveMotor
•Blockedfanblades
•Defectivethermalprotection
•Blockedairvents
•Defectivemotor
•Oneormoreelementsaredefective
•Defectivethermostatorwrongthermostatsetting
•VoltagelowerthanthatwrittenonRatetag
•Heatlosseshigherthanunitcapacity(unitundersized)
•Defectivethermostatorblockedinletoroutlet(HLStripped)
•DefectiveMotor(slowmotoroperation)
Mr. Heater Forced-Air Electric Construction Heater
4
Operating Instructions and Owner's Manual