Whirlpool 4322452 manual Thermostat Switch Contacts Oven Ignitor Safety Valve

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The Thermostat contains a set of contacts that open and close, (see Figure 4-11A), depending on the temperature selected by the customer, and the temperature monitored in the oven cavity. When the thermostat is turned to the “ON” position, contacts within the thermostat close to complete an electrical circuit (see Figure 4-11B). As the oven heats up to a selected temperature, the internal pressure within the sensing bulb increases until the thermostat contacts are forced open (see Figure 4-11C).

OFF

BROIL

550

500

450

400

 

 

 

200

250 300

350

 

200

250

 

 

 

300

 

 

 

OFF

 

 

350

 

 

 

BROIL

 

 

400

 

 

450

 

 

 

 

 

550

500

 

 

3. Oven Temp Reached

 

 

 

2. Oven On

 

 

Pressure Expands Sensor Actuator

 

1. Oven Off

 

Oven

 

Switch Open

Thermostat

Shaft

 

 

 

 

 

 

 

 

 

 

 

 

Sensor

 

 

 

 

Switch

 

 

 

 

Actuator

 

 

 

 

Contacts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Shaft Rotates Against

& Pushes Against Switch Actuator

Actuator - Switch Closes

- Switch Opens - Oven Turns Off

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sensing Bulb

 

A

B

C

 

 

 

200˚ Heat From Oven

 

 

Figure 4-11

 

L1

Thermostat

 

N

 

 

 

 

Switch Contacts

Oven Ignitor

Safety Valve

Figure 4-12

As the oven cools, the pressure from the sensor actuator decreases, and the thermostat contacts close. This cycling of the contacts opening & closing continues until the cooking function is complete. The electrical contacts of the thermostat complete an electrical circuit through the ignitor and safety valve to the neutral side of the 120-volt circuit (see Figure 4-12).

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Contents GAS Ranges Voltage Checks Table Of Contents Page Introduction Page Measuring Heat Energy Fundamental Properties of GAS#4 Liquefied Petroleum L.P. GAS Fuel Types#2 Mixed GAS #3 Manufactured GASCategory Fuel Characteristics of GAS Fuels25 To 60 Pounds Pressure Main Distribution of Natural GASDistribution of L.P. GAS Functions Pressure RegulatorsRegulator Operation Open Position Venting Regulator DiagnosticsWHIRLPOOL, U.S.A., Benton HARBOR, MI Measuring GAS PressureMagnehelic Gauge GAS Distribution Cooktop Burner SystemOFF Position GAS ValvePLUG-TYPE Orifices GAS Valve OrificesNatural GAS Orifices Orifice Specifications ChartNatural Gas Position Universal ORIFICE-OVEN ApplicationGAS Valve Orifice Diagnostics Performance Check Burner Operation AIR Shutter & Venturi Burner Head Properly Burning Flame Flame CharacteristicsNot Enough Primary Air Flame Quenching Page Symptom Cause Corrective Action Improper Flame DiagnosticsPort Burner Climber Port Cleaning the BurnersOperation Standing Pilot Ignition SystemRelighting a Standing Pilot Adjusting the Pilot Flame Height Cleaning the Pilot 123 Electronic Ignition SystemGround Strap Ignitor Spark Flow Sealed BurnerElectronic Ignition Diagnostics Performance Check Standing Pilot Ignition Oven Burner SystemGas Standing Pilot Safety Valve Lighting the Oven Pilot GLO-BAR Ignition Thermostat Switch Contacts Oven Ignitor Safety Valve 50 to 1100 Ω Amps Safety Valve Thermostat Switch Contacts Oven Ignitor Safety Valve Cleaning the Oven Burner 88P SELF-CLEANING SystemBK P3-1 P3-4 Oven Off Bake Cycle Broil Cycle Broil BakeF0 = Code GuidelinesPerformance Check SELF-CLEAN Oven Door Locking System Door Locked Door Unlocked General Natural and L.P. GAS ConversionConverting Cooktop Burners Converting a Pressure RegulatorConverting AN Oven Thermostat Converting AN Oven BurnerBurner Flame Adjustment Performance Check Page Testing the Components General Information Carborundum Ignitor Testing AN Oven GLO-BAR IgniterOffoff Litelite Testing AN Ignitor SwitchTesting AN Oven Light Switch Testing AN Oven Temperature Sensor To test the solenoid windings, perform the following steps Testing AN Oven Door LatchTo test the switches Testing a GAS Safety Valve Testing the GAS Control Valves Manual Shutoff Valve Testing the GAS Pressure RegulatorProblem Possible Cause Solution Troubleshooting ChartProblem Possible Cause Solution Standard Range Schematic DiagramsSelf-Clean Range Bake Strip CircuitsOven Light