LG LMXS28626S Refrigerator: Deactivating Showroom Mode -... | appliancefaults.com

Technical Background:

Showroom Mode is designed for retail display purposes. It disables the compressor and cooling functions to conserve energy while allowing the lights and display to operate. The main control unit (MCU) receives input from the button matrix on the control panel. Incorrect or unintended button presses can trigger this mode. Voltage fluctuations can also corrupt the MCU's memory.

Symptoms:

The refrigerator display shows 'Showroom Mode' or a similar message. The compressor and cooling system are not active, even though the lights and display function.

Possible Causes:

Accidental activation of showroom mode during setup.
Incorrect button sequence entered.
Power surge affecting the control board.
Software glitch in the main control unit (MCU).
Display board malfunction affecting user interface.

Solution:

1

Locate the control panel on the refrigerator door.
2

Simultaneously press and hold the 'Refrigerator' and 'Ice Plus' buttons for 3-5 seconds.
3

Listen for a chime or beep indicating the mode has changed. The display should update.
4

If the initial attempt fails, disconnect the refrigerator from the 120V AC power outlet by unplugging it or switching off the dedicated breaker in the breaker panel.
5

Wait for 5 minutes, then reconnect the power.
6

Repeat steps 2 and 3 to deactivate Showroom Mode.
7

If the issue persists, the main control board may require service or replacement. Contact a qualified appliance technician.

Safety Warning:

Always disconnect power to the refrigerator at the breaker panel before attempting any repairs. Lock Out/Tag Out (LOTO) procedures must be followed to prevent accidental re-energizing of the circuit. High voltage is present within the appliance.

Prevention:

Avoid accidental activation by being careful when pressing buttons on the control panel, especially during cleaning or setup. Consider using a surge protector to protect the refrigerator from power surges.

Expert Tip:

Some LG models have a service mode that can be accessed by pressing a specific sequence of buttons. While in service mode, you can directly disable showroom mode. The sequence is often model-specific and can be found in the service manual or by contacting LG technical support.

Frequently Asked Questions

•How can I verify that the compressor is running after exiting Showroom Mode?

Listen for the compressor's hum. You can also check the temperature inside the refrigerator after an hour or two. It should be noticeably cooler.

•What if the 'Refrigerator' and 'Ice Plus' button combination doesn't work?

Consult the user manual for alternative button combinations specific to your model. If those don't work, a service technician may be required to diagnose the control board.

•Could a faulty door switch cause the refrigerator to enter Showroom Mode?

While not a direct cause, a faulty door switch can sometimes create erratic behavior in the control board. Check the door switch for continuity with a multimeter.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How can I verify that the compressor is running after exiting Showroom Mode?

•What if the 'Refrigerator' and 'Ice Plus' button combination doesn't work?

•Could a faulty door switch cause the refrigerator to enter Showroom Mode?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: