Whirlpool Induction Cooktop Displaying "Loc":... | appliancefaults.com

Technical Background:

The 'Loc' code indicates the control lock feature is active. This feature disables the control panel to prevent accidental operation, often used to prevent children from turning on the cooktop. The MCU (Microcontroller Unit) within the cooktop's control board receives input from the touch sensors. When the control lock is engaged, the MCU ignores most inputs except for the specific sequence to deactivate the lock. Voltage paths related to the touch sensors are effectively blocked by the MCU when the lock is active.

Symptoms:

The cooktop displays the 'Loc' code, and the control panel is unresponsive. You are unable to use any of the cooktop's functions.

Possible Causes:

Control lock accidentally engaged.
Child lock feature activated.
Software glitch in the cooktop's control board.
Faulty touch sensor on the control panel.
Power surge causing the lock to engage unexpectedly.

Solution:

1

Consult the owner's manual to find the specific button combination for deactivating the control lock. Typically, this involves pressing and holding a specific button (often labeled 'Lock', 'Control Lock', or similar) for 3-5 seconds.
2

If the manual is unavailable, try pressing and holding various buttons on the control panel, especially those that resemble a lock symbol or have a secondary function related to safety.
3

Power cycle the cooktop by turning off the breaker to the cooktop in your breaker panel for 1 minute. Then, turn the breaker back on and check if the 'Loc' code has disappeared.
4

If the code persists, inspect the control panel for any visible damage or debris. Clean the control panel with a soft, damp cloth to ensure no residue is interfering with the touch sensors.
5

Using a multimeter, with the power OFF and the cooktop unplugged, check the continuity of the touch sensor circuits on the control board, comparing the lock button circuit to adjacent circuits to identify shorted or open circuits. This requires accessing the control board, which should only be done by a trained technician.
6

As a last resort, consider contacting a qualified appliance repair technician to diagnose and potentially replace the control board if a software or hardware issue is suspected.
7

Document the model and serial number of your cooktop before calling for service. This will help the technician prepare for the service call.

Safety Warning:

Always disconnect power to the cooktop at the breaker panel before attempting any repairs or inspections. This cooktop operates on 240V AC. Ensure Lock Out Tag Out (LOTO) procedures are followed to prevent accidental re-energizing of the circuit.

Prevention:

Regularly clean the control panel with a soft cloth to prevent debris buildup. Avoid placing heavy objects on the control panel, as this could inadvertently activate the touch sensors and potentially engage the control lock. If children are present, ensure they understand the function of the cooktop and the control lock feature.

Expert Tip:

Some Whirlpool induction cooktops have a hidden service mode. To access it, try pressing and holding the 'Timer' and 'Power' buttons simultaneously for 5 seconds. This may allow you to clear error codes or perform diagnostic tests, but use caution and refer to the service manual before making any changes.

Frequently Asked Questions

•Where can I find the owner's manual for my Whirlpool induction cooktop?

You can usually find the owner's manual on the Whirlpool website by searching for your cooktop's model number. Alternatively, you can contact Whirlpool customer support directly.

•How do I know if the control board is faulty?

A faulty control board can exhibit various symptoms, including unresponsive controls, persistent error codes, and inconsistent operation. A qualified technician can perform diagnostic tests to confirm if the control board is the root cause.

•What tools do I need to remove the cooktop from the countertop?

Typically, you'll need a Phillips head screwdriver, a flathead screwdriver (for prying), and possibly a 1/4-inch nut driver depending on how the cooktop is mounted. Always disconnect power before attempting to remove the cooktop.

Whirlpool Induction Cooktop Displaying "Loc": Deactivation Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•Where can I find the owner's manual for my Whirlpool induction cooktop?

•How do I know if the control board is faulty?

•What tools do I need to remove the cooktop from the countertop?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: