PS
LG
Power Supply / Phase Sense Error
Dryer displays PS and may not start or may stop unexpectedly.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Incorrect wiring at terminal block, Reversed or missing line connections, Faulty main PCB power sensing circuit
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker and unplug the dryer before opening any panels.
Steps:
- Verify cord wiring: Check that the power cord is wired correctly to the terminal block according to the installation manual (L1, N, L2 for 4-wire; or L1, N, L2 with proper bonding strap for 3-wire).
- Inspect for burns: Look for signs of overheating or arcing at the terminal block. Replace damaged parts.
- Professional check: If wiring is correct and PS persists, the main PCB may be misreading the supply and should be tested/replaced by a technician.
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Repair Difficulty
Medium
3/5
Required Part
Main Control Board
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