Whirlpool GBS277PDB Technical Guide - Page 41
Component Testing
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COMPONENT TESTING Before testing any of the components, perform the following checks: • The most common cause for control failure is corrosion on connectors. Therefore, disconnecting and reconnecting wires will be necessary throughout test procedures. • All tests/checks should be made with a VOM or DVM having a sensitivity of 20,000 ohmsper-volt DC, or greater. • Check all connections before replacing components, looking for broken or loose wires, failed terminals, or wires not pressed into connectors far enough. • Voltage checks must be made with all connectors attached to the boards. • Resistance checks must be made with power cord unplugged from outlet, and with wiring harness or connectors disconnected. WARNING ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Replace all panels before operating. Failure to do so could result in death or electrical shock. BLOWER MOTOR WARNING ELECTRICAL SHOCK HAZARD Disconnect power before servicing. Replace all panels before operating. Failure to do so could result in death or electrical shock. OVEN TEMPERATURE SENSOR Refer to page 4-4 for the procedure for servicing the blower motor. 1. Disconnect the electrical power to the oven. 2. Disconnect the wires from the blower motor terminals. 3. Set the ohmmeter to the R x 1 scale. 4. Touch the ohmmeter leads to the motor terminals. The meter should indicate between 14 and 18 Ω. Refer to page 4-8 for the procedure for servicing the oven temperature sensor. 1. Disconnect the electrical power to the oven. 2. Disconnect the oven temperature sensor connector from the oven connector. 3. Set the ohmmeter to the R x 1K scale. 4. Touch the ohmmeter leads to the sensor connector pins. The meter should indicate 1080 Ω @ 70˚F. 5-1