What does PS mean on a LG dryer?

PS means: Power supply / improper voltage wiring error. The most likely parts involved are power cord, terminal block, main control board.

How much does it cost to fix PS?

A typical no-power repair (door switch / fuse / control board) costs about $100–$350 nationally, parts and labor included. This is a reference range, not a quote — local prices vary.

Why did my LG dryer show PS right after I moved or installed it?

A new install is the most common time for this code. The power cord may have been attached with the wires in the wrong spots, or a screw may be loose. Unplug the dryer and have the cord connection checked against the installation instructions.

Is it safe to keep running my dryer with a PS code?

It's best not to. Wrong or loose wiring can overheat connections. Unplug the dryer and get the power connection checked before using it again.

Error codes › Dryer › LG

LG Dryer PS Error Code

Power supply / improper voltage wiring error

Applies to: Electric dryer models.

What's going on

The PS code on an LG electric dryer means the dryer sensed a problem with the power coming in. Most often the power cord wires are reversed or loose where they connect to the terminal block on the back of the dryer. Because this involves household wiring, unplug the dryer before checking anything, and have the connection fixed before you keep using it.

An electric dryer runs on a 240-volt circuit. The power cord brings in two live wires plus a neutral, and sometimes a ground. Each wire must attach to the correct screw on the terminal block, a small connection plate behind a cover on the back of the dryer.

The dryer's control board checks the incoming power when it starts. If the wires are swapped, loose, or not getting the right voltage, it shows PS and may refuse to run. This protects the dryer's parts and helps prevent overheated connections.

This code is common right after a new install or a move, when the cord was just attached. Codes can mean different things on different model generations, so confirm the meaning with your model number in the owner's manual.

Likely causes

power cord — If the cord's live and neutral wires are attached to the wrong screws, the dryer sees improper wiring and shows PS. A damaged or burned cord can also deliver uneven power.
terminal block — Loose screws or a scorched, damaged terminal block can cause a poor connection. That makes the dryer read the incoming voltage incorrectly.
main control board — If the wiring and power are correct, the board that monitors incoming power may be faulty. It can then show PS even when nothing is wrong with the supply.

The same code can mean different things on different model generations. Check the model number on your dryer's rating plate before ordering parts.

Can you fix it yourself?

Doable for an experienced DIYer with the right part, but many people still call a technician.

Safe things to check first

Before any check, unplug the dryer or switch off its breaker. Do not touch the terminal block or cord connections while the dryer has power.
Power-cycle the dryer. Turn off its breaker for about a minute, turn it back on, and see if the code returns.
Look at your breaker panel. Electric dryers usually use a double breaker, and if one side has tripped the dryer may get only part of its power.
With the dryer unplugged, look at the cord and plug for burn marks, melting, or cuts. If you see any damage, leave it unplugged and get it repaired.

When to call a technician

A handy owner who is comfortable with wiring can reconnect the cord to the terminal block using the installation instructions for their model, with the power off. If you are unsure how to wire it, see scorch marks, or the code stays after the wiring is confirmed correct, call a qualified appliance technician or a licensed electrician for the outlet.

What the repair usually costs

$100–$350

No-power repair (door switch / fuse / control board), parts and labor — national reference range

Confidence: low (based on a single cost guide — treat as a rough guide). Plus a service call fee of about $50–$100, often credited toward the repair.

This is not a quote. Prices vary by region and by model.

Repair or replace?

Repair usually makes sense. Even the high end of this repair stays under $500, about half the price of a typical new dryer.

A typical new dryer costs about $800–$1,200.

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Common questions

What does PS mean on a LG dryer?: PS means: Power supply / improper voltage wiring error. The most likely parts involved are power cord, terminal block, main control board.
How much does it cost to fix PS?: A typical no-power repair (door switch / fuse / control board) costs about $100–$350 nationally, parts and labor included. This is a reference range, not a quote — local prices vary.
Should I repair or replace my dryer?: Repair usually makes sense. Even the high end of this repair stays under $500, about half the price of a typical new dryer.
Can I fix PS myself?: Doable for an experienced DIYer with the right part, but many people still call a technician.
Why did my LG dryer show PS right after I moved or installed it?: A new install is the most common time for this code. The power cord may have been attached with the wires in the wrong spots, or a screw may be loose. Unplug the dryer and have the cord connection checked against the installation instructions.
Is it safe to keep running my dryer with a PS code?: It's best not to. Wrong or loose wiring can overheat connections. Unplug the dryer and get the power connection checked before using it again.