SECTION 1. COMPONENT DESCRIPTION
COMPONENTS
Meat Probe: Senses the internal tempera- ture of products during a baking function. The meat probe is an NTC, or negative temperature coefficient, which means the resistance value decreases as the tempera- ture increases. See meat probe chart below for resistance values.
| MEAT PROBE |
Type: | Calibration: |
NTC Thermistor | 9938 ohms (150°F.) |
PROBE RESISTANCE VS. TEMR TABLE | |
Degrees E | Resistance |
122 | 18963 ohms |
150 | 9938 ohms |
156.2 | 8846 ohms |
165.2 | 7456 ohms |
210.1 | 3886 ohms |
Membrane Switch: The means to make a switch contact, thus instructing the elec- tronic control system to perform a desired function. The membrane switch is a simple set of two contact surfaces containing conductive material, one on the back layer of MYLAR and the other on the front layer of MYLAR. There is also a center section of
Electronic Control: A programmable soft- ware component that controls oven, clock, timer and various other functions. The control maintains oven temperatures in either bake, broil, or clean. It is adjustable to maintain correct temperature offsets. It is also programmed with
unsafe condition is present, shuts the sys- tem down and displays the appropriate fault code. Fault codes are covered in product specifications sections 3 and 4.
Touch Sensor Technology: With this new technology a positive charge and negative charge is present around each pad. This creates an electrostatic field that emanates around, below, and through the glass front. When the consumer touches a key pad, this disturbs the electrostatic field and draws capacitance energy. This input is read by the module, which in turn signals the con- troller to respond, and the desired function is performed. In order for a function to be performed, a conductive material must
bridge the gap between the negative charge present at each pad.
Display Board: Displays
Power Relay Board: Contains the intelli- gence in the electronic control system and controls all oven functions, clock, timer, ,and various other consumer programmable inputs. The PRB has a relay mounted to it for each function it provides.
Oven Sensor: A device to monitor internal
oven temperature. The sensor has a PTC or positive temperature coefficient, or a resis- tance value that increases with temperature. Allows the electronic control to maintain a temperature setting through means of resistance matching with the
lected temperature. Example: The oven control is set at 350°F, the oven sensor resistance at room temperature is approxi- mately 1060 ohms. As the oven heats, the
16009721 | COMPONENT DESCRIPTION | |
| _1999 Maytag Appliances Sales Company |
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