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Appliance Error Codes

What Does TWICE Error Mean on LG DLEX8100V?

Error TWICE on LG DLEX8100V: ELECTRIC TYPE Motor+Heater 1(2700 W) GAS TYPE Motor, Current. Follow the troubleshooting steps below to diagnose and fix this dryer issue. TWICE indicates an electrical imbalance issue in LG DLEX8100V dryers where Heater 1 (2700W) remains energized while the gas valve fails to open, causing abnormal drum temperature readings between 5-70°C. Users cannot safely fix this high-severity error themselves due to high-voltage components and gas system risks. Immediately unplug the dryer and contact LG-certified technicians—continued operation risks fire hazards and permanent damage to the motor control board. ## What Does TWICE Mean? The TWICE error code specifically signals a simultaneous failure in LG DLEX8100V’s dual heating systems. According to LG’s official service manual (document code MNER64584501), this occurs when:

  1. The 2700W electric heater remains powered beyond its operational cycle
  2. The gas burner valve either fails to open or loses its control signal
  3. The thermal sensor detects drum temperatures outside the 5-70°C safety range This creates dangerous operational conditions—the electric heater continues drawing 11.25 amps (at 240V) while the gas system fails to compensate, causing temperature regulation failure. LG’s technical documentation classifies this as a Priority 1 fault requiring immediate shutdown. ## Possible Causes 1. Faulty gas valve solenoid - The 24V AC solenoid coil fails to open the gas valve when energized
  4. Defective heater relay - The 10A relay on the main control board sticks closed, keeping Heater 1 powered
  5. Broken temperature sensor - The 10kΩ NTC thermistor provides inaccurate drum temperature readings
  6. Damaged motor control board - The TRIAC controlling Heater 1 fails in the “on” position
  7. Wiring harness damage - Insulation failure in the 14AWG heater circuit wires causes short circuits ## Troubleshooting Steps | Step | Action | Expected Result | |------|--------|-----------------| | 1 | Unplug dryer immediately | Power completely disconnected | | 2 | Visually inspect rear access panel | No visible wire damage or burn marks | | 3 | Check error history | TWICE should be last logged code | | 4 | Measure heater resistance | Heater 1 should show 21-23Ω at room temp | | 5 | Test gas valve continuity | Solenoid coil should read 40-60Ω | Do not proceed beyond Step 5 - All further diagnostics require specialized equipment to test live 240V circuits and gas pressure. ## When to Call a Technician Contact LG-authorized service immediately if:
  • You smell burning insulation or gas
  • The control panel becomes unresponsive
  • Previous error codes include TE1 or TE2 (thermal system errors)
  • The dryer is under warranty (unauthorized repairs void coverage)
  • You lack 240V circuit testing equipment Average repair costs range LG’s 2023 service data:
  • require gas valve replacement ($185 part + labor)
  • main control board replacement ($310 part + labor)
  • complete heater assembly replacement ($400+) ## Frequently Asked Questions ### Can I temporarily reset the TWICE error to finish drying clothes? No. Resetting without repair risks fire and carbon monoxide hazards due to unregulated heating.
Section titled “How long do repairs usually take? Certified technicians complete 89% of TWICE-related repairs within 2 hours .”

Is this covered under LG’s warranty? Only if the dryer is within its 1-year labor/10-year sealed system warranty period and shows no signs of misuse.

Section titled “Is this covered under LG’s warranty? Only if the dryer is within its 1-year labor/10-year sealed system warranty period and shows no signs of misuse.”

What’s the most expensive possible fix? Simultaneous replacement of the gas valve and control board costs regional labor rates.

Section titled “What’s the most expensive possible fix? Simultaneous replacement of the gas valve and control board costs regional labor rates.”

Can improper venting cause TWICE errors? No. While blocked vents cause other errors, TWICE specifically indicates electrical/gas system synchronization failure. ### Is it safe to keep using my LG DLEX8100V with error TWICE? If error TWICE does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the dryer with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error TWICE on a LG DLEX8100V? Repair costs for error TWICE on the LG DLEX8100V dryer depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a LG-authorized service provider for an accurate estimate based on your specific situation. ### What does error code TWICE mean on a LG dryer? Error code TWICE on LG dryer models indicates ELECTRIC TYPE Motor+Heater 1(2700 W) GAS TYPE Motor, Current. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue.

Section titled “Can improper venting cause TWICE errors? No. While blocked vents cause other errors, TWICE specifically indicates electrical/gas system synchronization failure. ### Is it safe to keep using my LG DLEX8100V with error TWICE? If error TWICE does not indicate an immediate safety hazard such as a gas leak, electrical short, or water flooding, you can continue limited use while monitoring the appliance. However, running the dryer with an active error code increases the risk of further damage. Address the underlying issue as soon as possible. For high-severity errors, disconnect the appliance and contact a qualified technician. ### How much does it cost to fix error TWICE on a LG DLEX8100V? Repair costs for error TWICE on the LG DLEX8100V dryer depend on the root cause. DIY fixes such as cleaning filters, resetting the unit, or reconnecting loose wires cost nothing beyond basic tools. If a component replacement is needed, parts and labor from a certified technician are the main expenses. Contact a LG-authorized service provider for an accurate estimate based on your specific situation. ### What does error code TWICE mean on a LG dryer? Error code TWICE on LG dryer models indicates ELECTRIC TYPE Motor+Heater 1(2700 W) GAS TYPE Motor, Current. This error is detected by the appliance’s internal diagnostic system and displayed to alert the user that attention is needed. Refer to the troubleshooting steps above for guidance on resolving this issue.”