What PS means (lg ps error)
An lg ps error means an LG dryer has detected improper supply voltage or wiring — for example a cord wired incorrectly or the wrong supply for the model. The control raises PS to protect the dryer from running on a supply it cannot use safely, so the wiring needs checking before further use.
Symptoms to look for
The signs below help confirm you are dealing with this condition rather than a different fault on your LG Dryer. You may see one of them or several together, and they can build up gradually or appear suddenly after a power event, a long door opening, or recent service.
- The display shows “PS”
- The dryer will not start or will not heat
- The fault appears right after installation or rewiring
- The unit may be on the wrong cord or outlet type
Common causes
Several different faults can produce these symptoms. Working through the most likely causes in order helps separate a quick, owner-level check from a problem that needs trained service and the correct LG parts.
- Cord wired incorrectly — a 3-prong/4-prong miswire at the block
- Wrong supply voltage — the dryer is on the wrong circuit
- Loose terminal block connection — a conductor is not secured
- Outlet wiring fault — the receptacle is wired wrong
Troubleshooting steps you can try
Work through these checks in order before calling for service. Stop wherever you are unsure, or where high-voltage parts, gas, the sealed refrigeration system, or a heat-pump compressor are involved, and hand the rest to a qualified technician.
- Confirm the dryer is on the correct 240V (or model-specified) circuit.
- Recall any recent installation or cord change that could be miswired.
- Do not keep starting the dryer while PS is shown.
- Because this is a wiring safety issue, have a technician or electrician verify the cord and outlet.
Parts a technician may replace
Depending on what the diagnosis shows, a technician may inspect, test, or replace the power cord, terminal block, and household outlet/wiring. The correct part for your LG Dryer is matched from the model and serial number, and genuine LG components are fitted rather than generic substitutes so that performance, safety, and the appliance’s long working life are all protected. Confirming the failed part before ordering avoids replacing more than the fault actually requires.
When to call a technician
PS needs a technician or electrician to verify the cord wiring, terminal block, and outlet match the dryer’s requirements. When the fix calls for trained service, book a visit through our scheduling page and an experienced, qualified technician will diagnose and repair it. For manufacturer documentation and model lookup, see the manufacturer at lg.com/us.
Prevention and care
Regular care keeps this condition from returning on your LG Dryer. Keep filters, vents, and the condenser or exhaust path clean, avoid overloading or blocking airflow, check that doors and seals close cleanly, and follow the LG maintenance guidance for your model. Because this unit relies on electronic control, protect it with a stable, correctly rated power supply and have any built-in or laundry installation done to LG specification so the control never sees an out-of-range condition. If a code appears, note exactly what was shown before you reset the appliance — that record helps the technician reach an accurate diagnosis and avoid replacing parts unnecessarily. Where stored food, a sealed refrigerant system, gas, or a safety lockout is involved, treat the condition as a reason to act quickly rather than wait.
Related help and LG resources
Browse other LG Dryer diagnostics, read about professional LG Dryer repair, look up your unit in the LG models reference, or the related nP no-current error, or schedule a service visit. For LG manufacturer documentation and model lookup, visit the manufacturer at lg.com/us.
