TESTING AN OVEN TEMPERATURE SENSOR

Some oven controls use an oven temperature sensor (see Figure 6-5) to operate the bake, broil, and self-clean functions. The oven temperature sensor is a “Resistance Temperature Detector (RTD)” and is composed of a stainless steel tube with a thin film of platinum on the end. The sensor is usually located inside the oven cavity at one of the upper rear corners. The RTD is nonadjustable, but it may be checked with an ohmmeter at various temperatures. To test a switch:

1.Turn off the gas and electrical power to the range.

2.Unplug the connector from the oven temperature sensor.

3.Set the ohmmeter to the R x 10 position.

4.Touch the meter leads to the plug pins. The meter should indicate approximately 1100 at 75 ˚F. For resistances at other temperatures, refer to the chart below. NOTE: The readings are approximate.

 

Temperature (˚F)

Resistance ()

 

32

1000

 

75

1100

 

250

1450

 

350

1650

 

450

1850

 

550

2050

Oven Temperature

650

2230

900

2700

Sensor

 

 

Figure 6-5

Connector

 

 

 

Page 6-6

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Image 76
Whirlpool 4322452 manual Testing AN Oven Temperature Sensor