Whirlpool Induction Cooktop Display Flickering:... | appliancefaults.com

Technical Background:

The cooktop's display is controlled by a microcontroller unit (MCU) that relies on a stable voltage supply. When the oven is activated, it draws a significant amount of current. If the power supply to the cooktop is weak or fluctuating, it can disrupt the MCU's operation, leading to the flickering display.

Symptoms:

The Whirlpool induction cooktop display flickers intermittently, particularly when the oven is also in operation. The cooktop may function normally when the oven is off.

Possible Causes:

Insufficient voltage supply to the cooktop.
Loose wiring connections within the cooktop or at the breaker panel.
Failing power control board (PCB).
Overload on the circuit causing voltage drop.
Damaged ribbon cable connecting the display to the main control board.
Grounding issues.

Solution:

1

Turn off the breaker to the cooktop.
2

Inspect the breaker panel for any loose connections or signs of damage. Tighten any loose connections using an insulated screwdriver.
3

Use a multimeter to test the voltage at the cooktop receptacle. It should read 240V AC.
4

Disconnect the power and access the cooktop's internal components. Use a 1/4-inch nut driver to remove the screws securing the access panels.
5

Check all wire harness connections for looseness or corrosion. Clean and re-seat any questionable connections.
6

Inspect the ribbon cable connecting the display to the main control board for damage. Replace if necessary.
7

If the problem persists, the power control board (PCB) may be faulty and require replacement. Obtain the correct replacement part number for the cooktop model.

Safety Warning:

Disconnect power to the appliance at the breaker panel before performing any repairs. Lock-out/Tag-out (LOTO) procedures should be followed to prevent accidental energization. High voltage is present within the cooktop, posing a risk of electric shock.

Prevention:

Periodically inspect the cooktop's power cord and connections for any signs of wear or damage. Avoid overloading the circuit by using multiple high-wattage appliances simultaneously.

Expert Tip:

Check the oven's heating element for shorts to ground. A shorted element can pull excessive current, causing voltage fluctuations on the circuit and affecting the cooktop's display. Use an ohmmeter to check for continuity between each element terminal and the appliance chassis.

Frequently Asked Questions

•What is the voltage reading at the cooktop receptacle with the oven on?

Check the voltage at the receptacle while the oven is actively heating. A significant drop (e.g., below 220V AC) indicates a problem with the power supply or circuit.

•How do I access the main control board on my Whirlpool cooktop model?

Refer to the cooktop's service manual or online resources for specific instructions on accessing the control board. Typically, you'll need to remove the top panel or access it from below after disconnecting power.

•Where can I find the part number for the power control board (PCB)?

The part number is usually printed on a sticker or label affixed to the PCB itself. You can also find it in the appliance's parts diagram or by contacting a Whirlpool authorized parts distributor with the cooktop's model number.

Whirlpool Induction Cooktop Display Flickering: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the voltage reading at the cooktop receptacle with the oven on?

•How do I access the main control board on my Whirlpool cooktop model?

•Where can I find the part number for the power control board (PCB)?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: