Model reference
LG LD-4421NV
Dishwasher
1 document9 error codes6 service modes
Available documentation
Service Manual
- Dishwasher Service Manual42 pg
MyPros+ Max
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- Step-by-step diagnostics from the service manual
- Test values, resistance specs, and wiring references
- Verified part numbers when replacement is needed
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Service modes (6)
- Check Mode – Buzz On/Off["Press Delay Start + Power buttons simultaneously."]
- Check Mode – Display Inner Temperature["Press Program button + Half Load button simultaneously."]
- Check Mode – Display Soil Index["Press Program button + Spray button simultaneously."]
- Check Mode – Display Water Supply Frequency["Press Program button + Delay Start button simultaneously."]
- Hardness Level Setting Mode["Press Cool Dry (or UV) + Power button to enter Hardness Level setting mode (default
- Test Mode (Check Program)["Close the door.","Press Half Load + Rinse + POWER button simultaneously (1 time)
Full entry steps, exit procedures, and test sequences are available in Max.
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