Frequently Asked Questions
•How do I locate the exact replacement part number for the relay board?
The part number is typically printed on a label on the relay board itself. You can also find the part number in the range's service manual or by entering the model number on the manufacturer's website or a reputable appliance parts retailer's website.
•What voltage should I expect to see on the communication wires between the MCU and relay board?
Typically, the communication signals are low voltage DC, often around 5V DC. However, consult the wiring diagram for your specific model to confirm the expected voltage levels.
•Is it possible to test the relay board itself to determine if it is faulty?
You can test the relays on the board for continuity using a multimeter. De-energize the relay and check for continuity across the normally open contacts; then, energize the relay (if possible, applying the rated coil voltage) and check for continuity across the same contacts. The continuity should change when the relay is energized. However, this only tests the relay functionality; it does not test the board's communication circuitry.