LG Dryer PS Error Code: Power Supply Fault Fix

What is the LG Dryer PS error?#

PS on an LG dryer is a power-supply error — the dryer is not getting proper voltage on both legs of its 240-volt circuit, so the drum may turn on the 120-volt leg while the heater, which needs both legs, stays cold. Take this one seriously: a burning smell at the wall outlet or a breaker that trips when you start the dryer points to a real electrical fault, so stop and unplug it. The first thing I check is whether the drum spins but never heats, because that split behavior is the tell-tale of one missing 240-volt leg.

PS on a LG Dryer: likely causes and repair cost#

On a LG Dryer, the PS code signals: power supply error.

Typical professional repair: $100–$280 · Difficulty: hard · usually a technician job

Symptoms that often accompany PS: Dryer drum turns but no heat; Display dim or flickering; Dryer trips breaker when started; Burning smell at wall outlet

Technician diagnostic sequence for PS:

1. Check the electrical outlet with a voltmeter — LG electric dryers require 240V (two 120V legs); if one leg is lost, the dryer displays PS
2. Inspect the dryer power cord prongs for burn marks or discoloration at the outlet connection — a loose prong causes arcing and voltage drop
3. Check the home circuit breaker panel — a dryer breaker is a double-pole 30A breaker; if one pole has tripped while the other remains on, you get half voltage
4. Reset both poles of the dryer breaker by switching fully off then on — some breakers trip to a middle position that is not visually obvious
5. If voltage at the outlet tests correctly at 240V, the internal power supply board in the dryer may have a failed rectifier or capacitor

Parts a technician may check or replace: Power Supply Board; Power Cord — if damaged

Field note: California older homes (pre-1990) may have aluminum wiring at the dryer outlet which expands/contracts with load cycling, creating loose connections. If PS appears intermittently during high-heat cycles, have an electrician inspect the outlet wiring for thermal damage.

Safety note: Electrical supply issues require a licensed electrician. A loose 240V connection can cause arcing that damages the outlet, the dryer, and creates a fire risk. Do not repeatedly reset a tripped dryer breaker without investigation.

How to troubleshoot the PS error yourself#

PS is more electrical than mechanical, so owner steps are about safe checks, not repairs. Unplug the dryer and inspect the cord and the outlet for scorching or a melted terminal — a burning smell there means stop and call a technician immediately. At the panel, confirm the double breaker is fully on; a half-tripped breaker leaves one 240-volt leg dead, which produces PS exactly, and resetting it firmly sometimes restores heat. Make sure the cord is the correct type and fully seated. Beyond checking the breaker and looking for obvious cord damage, PS usually means a failed power-supply board or a damaged cord that must be metered and replaced, and because it involves 240-volt wiring I hand that to a technician rather than risk it.

Is the LG Dryer PS error worth fixing?#

PS is worth fixing on most machines, though it sits higher than the trivial power codes because a board or cord may be involved. A professional PS repair runs $100–$280 to replace a failed power-supply board or a damaged cord after confirming the household circuit is sound. On a mid-life LG dryer that is a reasonable spend against a new machine. I lean toward replacement only when PS turns out to be a failed board on an older dryer and the quote nears half the price of a new unit, or when the outlet damage suggests the whole circuit needs an electrician's attention.

LG Dryer PS: frequently asked questions#

What does the PS error mean on a LG Dryer?#

PS is a power-supply error: the dryer is not receiving correct voltage on both legs of its 240-volt circuit, so it may tumble without heat. It reflects a supply or power-board fault.

Is it safe to keep using a LG Dryer that shows the PS error?#

No — if the breaker trips on start or there is a burning smell at the outlet, unplug the dryer. A missing or faulty 240-volt leg is an electrical hazard until it is diagnosed.

Can I clear the PS error myself, or do I need a technician?#

You can safely check the breaker and inspect the cord and outlet for damage. Metering and replacing the power-supply board or cord is a technician job because it involves 240-volt wiring.

How much does it cost to repair the PS error on a LG Dryer?#

A professional PS repair typically runs $100–$280 to replace the power-supply board or a damaged cord, once the household circuit is confirmed good.

Which parts usually fail when a dryer throws the PS code?#

The power-supply board or the power cord are the usual failures; a half-tripped breaker can also mimic PS with no failed part. The cord and outlet are checked first for safety.

Is a LG Dryer with the PS error worth repairing?#

Yes, on a sound machine — $100–$280 is under a new dryer. Only a board failure on an older unit, or outlet damage needing an electrician, tips toward replacing.

Why does one 240-volt leg lost at a half-tripped breaker trigger the PS error?#

When one 240-volt leg is lost — often at a half-tripped breaker or a damaged cord — the dryer sees incomplete supply voltage and posts PS, typically spinning without heat because the element needs both legs.