How do I fix error code PS on a LG dryers?

1. undefined: Check the wall outlet with a meter at L1 and L2 — correct voltage is 208–240 Vac ±10%. 2. undefined: If outlet voltage is incorrect, have a licensed electrician inspect the circuit breaker and outlet wiring. 3. undefined: Check that the power cord is correctly connected to the terminal block: neutral (white) to center terminal, red to right terminal, black to left terminal, ground (green) to external ground screw for 4-wire; for 3-wire, neutral center wire to silver center screw. 4. undefined: Verify the neutral (white) wire of the power cord matches the center N terminal on the terminal block — a mis-wired cord can supply 240V directly to the PCB causing PS. 5. undefined: Check connector BK2 or WH2 (Black wire) to BL2 (White wire) at the controller — should read 110–125 Vac; if not, check power cord connection. 6. undefined: Inspect the strain relief and ensure all terminal block nuts are tight. 7. undefined: Reset the circuit breaker or replace the house fuse — do not increase fuse capacity. 8. undefined: If all wiring is correct and voltage is confirmed in range but PS persists, replace the main PCB.

LG Dryers2023–present

Error Code PS

Power supply error — electric dryer power cord not connected correctly or house power supply incorrect; also displayed when 240V is applied to PCB indicating mis-wired power cord

Moderate

Address soon - your appliance may not work properly

Also displayed as: PS

How to Fix

1
Check the wall outlet with a meter at L1 and L2 — correct voltage is 208–240 Vac ±10%.
2
If outlet voltage is incorrect, have a licensed electrician inspect the circuit breaker and outlet wiring.
3
Check that the power cord is correctly connected to the terminal block: neutral (white) to center terminal, red to right terminal, black to left terminal, ground (green) to external ground screw for 4-wire; for 3-wire, neutral center wire to silver center screw.
4
Verify the neutral (white) wire of the power cord matches the center N terminal on the terminal block — a mis-wired cord can supply 240V directly to the PCB causing PS.
5
Check connector BK2 or WH2 (Black wire) to BL2 (White wire) at the controller — should read 110–125 Vac; if not, check power cord connection.
6
Inspect the strain relief and ensure all terminal block nuts are tight.
7
Reset the circuit breaker or replace the house fuse — do not increase fuse capacity.
8
If all wiring is correct and voltage is confirmed in range but PS persists, replace the main PCB.