FixByModel
PS

LG PS: Improper voltage / power-cord wiring fault

The dryer detected an improper voltage condition, often from the power cord's neutral and hot wires being reversed at the terminal block. It usually traces to the cord installation or house wiring.

May need a technician

By the FixByModel editorial team · Verified 2026-09 · Researched against manufacturer support & repair references (below)

Most likely causes

  1. White (neutral) and red (hot) wires reversed on the terminal block
  2. Loose or incorrectly installed power-cord connections
  3. Power surge or unstable household voltage
  4. Outlet not wired for a proper 240V supply
  5. Faulty power cord
Before you start — unplug the dryer, and on a gas model shut off the gas supply. Let it cool first — the drum, heater and exhaust can be hot. If a step involves the heating element, wiring, or opening the cabinet and you're unsure, stop and call a qualified technician.

Step-by-step fix

1Reset the circuit breakerTurn the dryer's breaker off for at least 10 seconds, then back on to clear a possible surge in the breaker.
2Check the cord connectionConfirm the power cord is fully and securely plugged into a grounded outlet matching the 240V rating plate.
3Inspect the terminal blockWith power off, verify the power cord's wires are landed on the correct terminals and not reversed or loose.
4Have the outlet checkedIf PS persists, have a licensed electrician confirm the outlet is wired correctly and supplying proper voltage.
5Call for serviceIf wiring and voltage are correct and PS remains, the dryer needs professional repair.

Still showing PS?

If you’ve worked through every step and PS keeps returning, an internal part likely needs testing and replacement. That’s a job for a qualified appliance technician, who can measure the suspect part against the service-manual spec before replacing it.

Which models this applies to

LG dryers. LG electric dryers (240V); commonly seen after a new install or cord swap.

FAQ

What does LG PS mean?

Improper voltage / power-cord wiring fault. The dryer detected an improper voltage condition, often from the power cord's neutral and hot wires being reversed at the terminal block. It usually traces to the cord installation or house wiring.

What causes LG PS?

The most likely cause is white (neutral) and red (hot) wires reversed on the terminal block. Other causes include Loose or incorrectly installed power-cord connections; Power surge or unstable household voltage; Outlet not wired for a proper 240V supply; Faulty power cord.

Can I fix LG PS myself?

Some checks are DIY, but this code often points to an internal component, so it may need a qualified technician.