LG Refrigerator Ice Maker Not Working
Expert diagnosis and repair for LG refrigerator ice maker not working issues.
Why Your LG Refrigerator Is Ice Maker Not Working
LG refrigerators are particularly susceptible to ice maker failures due to their complex dual ice-making systems and sensitive ThinQ smart diagnostics. Unlike simpler brands, LG models often feature both door-mounted and freezer compartment ice makers, creating multiple failure points. The brand's advanced inverter compressor technology, while energy-efficient, can cause inconsistent cooling cycles that affect ice production timing.
LG's proprietary ice maker modules are especially prone to electronic control board failures, often triggered by power surges or humidity fluctuations. The brand's water filtration systems are more restrictive than competitors, causing pressure drops that starve the ice maker. Additionally, LG's plastic water lines are notorious for developing micro-cracks in cold conditions, leading to gradual water leaks that eventually freeze and block the system entirely.
Common Causes in LG Refrigerators
ThinQ Wi-Fi module interference disrupting ice maker communication
Dual ice maker system pressure imbalance between door and freezer units
Inverter compressor irregular cycling affecting ice formation temperature
LG's restrictive water filter causing insufficient water flow (below 20 PSI)
Proprietary ice maker control board premature failure (typically 3-5 years)
Door-mounted ice chute flapper seal deterioration allowing warm air infiltration
LG's plastic water reservoir cracking due to thermal expansion cycles
Smart diagnostic false error codes preventing normal ice maker operation
Commonly Affected LG Models
- LRFDS3016S, LRFVS3006S, LRFXS2596S - LMXS30776S, LMXS28596S, LMXC23796S - LFXS26973S, LFXS28968S, LFXS30796D - LSXS26366S, LSXS22423S, LSXS26396S - LUPXS3186N, LUPXC2386N, LRFLC2706S
How We Fix This
TruePro's LG ice maker repair approach begins with running the brand's built-in ThinQ diagnostics to identify specific error codes, followed by manual pressure testing of the dual water systems. Our technicians are trained on LG's unique ice maker reset procedures, which often require disconnecting the ThinQ module temporarily. We use LG-approved lubricants for the door-mounted ice chute mechanisms and perform thermal stress testing on plastic water lines to prevent future failures.
Parts Commonly Needed
- Ice Maker Assembly (AEQ73110205, AEQ72910409) - Water Inlet Valve (5220FR2006H, 5221JA2005A) - Ice Maker Control Board (EBR75234703, EBR78940301) - Water Filter (LT1000P, ADQ74793501) - Door Ice Chute Assembly (AJP30627901) - Water Line Kit (5211JA1006B) - ThinQ Wi-Fi Module (EBR85234501)
Troubleshooting Steps
Check water supply line for kinks. 2. Replace the water filter. 3. Verify the ice maker is turned on. 4. Check freezer temperature (0°F). 5. Inspect the water inlet valve.
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Frequently Asked Questions
Why is my LG refrigerator ice maker not working?
- ThinQ Wi-Fi module interference disrupting ice maker communication - Dual ice maker system pressure imbalance between door and freezer units - Inverter compressor irregular cycling affecting ice formation temperature - LG's restrictive water filter causing insufficient water flow (below 20 PSI) - Proprietary ice maker control board premature failure (typically 3-5 years) - Door-mounted ice chute flapper seal deterioration allowing warm air infiltration - LG's plastic water reservoir cracking due to thermal expansion cycles - Smart diagnostic false error codes preventing normal ice maker operation
How much does it cost to fix a LG refrigerator that is ice maker not working?
LG refrigerator repair typically costs $100–$700. Free diagnostic with approved repair.
Does TruePro repair LG refrigerators?
Yes! TruePro technicians are experienced with LG appliances. 90-day parts & labor warranty. Call (877) 378-3111 or book a video consultation.
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Video Diagnosis — $49Call (877) 378-3111LG Error Codes
- Er 22: The Er 22 code means the compressor relay (also called the start relay or inverter board relay, depending on your model) has failed. The relay is responsible for sending the correct startup signal to the compressor. Without it, the compressor clicks, hums briefly, and shuts off, or it does not attempt to start at all. The refrigerator loses all cooling. This is one of the more serious error codes because no cooling occurs while the relay is down.
- Er 67: The Er 67 code means the refrigerator has detected that a door is not fully closed or a gap exists between the door and the cabinet. LG refrigerators use door switches and, on some models, magnetic reed sensors to detect door position. If a door stays ajar or the gasket does not seal, the board triggers Er 67 after a set time (usually 5 minutes). The alarm also sounds to alert you. Leaving a door open causes rapid temperature rise, frost buildup, and compressor overwork.
- Er CF: The Er CF code tells you the condenser fan motor is not running. This fan sits near the compressor at the bottom-rear of the unit. It pulls air across the condenser coils to dissipate heat. Without it, the compressor overheats and shuts down. Your refrigerator stops cooling entirely.
- Er CO: The Er CO code indicates the main control board and the display board have lost communication with each other. These two boards exchange data through a ribbon cable or wire harness. If that link breaks, the display cannot send your temperature commands to the main board, and the main board cannot report status back. The refrigerator often continues running at default settings, but you lose all user controls.
- Er dH: The Er dH code means the defrost heater circuit is not working. During automatic defrost cycles, the control board sends power to a glass-tube or calrod heater mounted beneath the evaporator coils. This heater melts accumulated frost. If the heater, its wiring, or the defrost control circuit fails, frost builds up on the evaporator until airflow is completely blocked. The freezer warms up first, then the fresh food section follows.
- Er FF: The Er FF code means the main control board is not receiving a rotational signal from the freezer evaporator fan motor. The fan is either stalled, electrically failed, or its wiring harness is damaged. Without this fan, cold air cannot circulate through the freezer and fresh food compartments. Temperatures rise fast, usually within a few hours.
Other LG Refrigerator Issues
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