Problems you may notice
• Refrigerator display shows Fault Code 42
• Compressor cycles irregularly or stops functioning
• Temperature inside the fridge or freezer section becomes inconsistent
• Control panel lights may flicker or display becomes unresponsive
• Ice maker may stop producing ice or function intermittently
• Cooling cycles seem erratic or the appliance runs continuously
• Audible clicking or buzzing sounds from the control board area
Possible Causes
• Loose or corroded electrical connections between the control board and sensors
• Faulty temperature sensor (thermistor) in the fresh food or freezer compartment
• Malfunctioning defrost cycle sensor
• Damaged wiring harness connecting control components
• Control board microprocessor experiencing a temporary malfunction
• Power supply voltage fluctuations or insufficient 120V household current delivery
• Humidity sensor failure in units equipped with humidity controls
• Failed evaporator fan motor sensor or damper control sensor
Precautionary measures
• Verify that the refrigerator is securely plugged into a functioning 120V outlet and check that the outlet has power by testing with another appliance
• Confirm both the refrigerator and freezer doors are closing completely and sealing properly without gaps
• Review and confirm temperature settings are appropriate (typically 37-40°F for fridge, 0°F for freezer)
• Unplug the refrigerator from the wall outlet or turn off the dedicated circuit breaker for 60 seconds, then restore power to allow the control system to reset
• Inspect the air vents inside both compartments to ensure they are not blocked by food items, ice buildup, or frost
• Check that the refrigerator is positioned level by placing a small level on top and adjusting feet if needed to ensure proper drainage and sensor function
• Allow the refrigerator to stabilize for at least 2-4 hours after plugging in, as the system needs time to reach operating temperature
• If the fault code persists after these checks, contact a professional appliance repair technician who can access internal components and test sensors with specialized equipment
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