GE Profile DPVH890EJ Technical Service Manual

Also see for Profile DPVH890EJ: Owner's manual and installation instructions Dimensions and installation information Installation information

– 30 –Inlet Safety ThermostatOn electric models, the inlet safety thermostat islocated on the top left area of the heater housing,to the left of the inlet control thermistor. On gasmodels, the inlet safety thermostat is located onthe right side of the diffuser, above the inlet controlthermistor. The thermostat monitors incoming airtemperature.If the thermostat reaches a temperature beyond itsmaximum temperature rating, it will trip and disablepower to the heating elements (electric models) orburner assembly (gas models).On electric dryers, the inlet safety thermostat opensat 210°F (99°C) and will automatically reset at 180°F(82°C). On gas dryers, the inlet safety thermostatopens at 300°F (149°C) and will automatically resetat 260°F (127°C).To remove the inlet safety thermostat:Remove the drum. (See1. Drum.)Disconnect the 2 wires from the inlet safety2.thermostat.Remove the Phillips-head screw that attaches3.the inlet safety thermostat to the heaterassembly or diffuser.Lift and slide the thermostat from the heater4.assembly or diffuser.Electric Model ShownInlet Control ThermistorOn electric models, the inlet control thermistor islocated on the top left area of the heater housing,to the right of the inlet safety thermostat. On gasmodels, the inlet control thermistor is located onthe right side of the diffuser, below the inlet safetythermostat. The thermistor monitors incomingair temperature and relays the information to thepower board.The thermistor has a negative coefficient. As thetemperature increases, the thermistor's resistancedecreases.Inlet control thermistor approximate resistancevalues:120K• Ω at 69°F (20°C)100K• Ω at 77°F (25°C)80K• Ω at 86°F (30°C)29K• Ω at 130°F (54°C)19K• Ω at 145°F (63°C)Operation of the inlet control thermistor can bechecked by using the Inlet Thermistor test in servicetest mode. (See Service Test Mode.)Specific failures associated with the inlet controlthermistor can initiate error codes E2 and E4. (SeeService Test Mode.)To remove the inlet control thermistor:Remove the drum. (See1. Drum.)Disconnect the 2 wires from the inlet control2.thermistor.Remove the Phillips-head screw that attaches3.the inlet control thermistor to the heaterassembly or diffuser.Lift and slide the thermistor from the heater4.assembly or diffuser.Electric Model ShownInlet ControlThermistorInlet SafetyThermostat