HVAC, Appliance, CNC, and VFD Error Code Repair Guides

Browse repair guides for HVAC, appliances, refrigeration, CNC alarms, VFD faults, generators, boilers, water heaters, and commercial equipment.

• Samsung Washer 4E Error Code — Water Supply Problem Fix

  6 Jun, 2026

  Samsung washer 4E error means water isn't reaching the machine. Check these five things before calling a technician — most 4E fixes take under 10 minutes.

• Samsung Washer 5E Error Code (SE) — Drain Error Fix

  6 Jun, 2026

  Samsung washer 5E or SE error means water isn't draining. Clean the pump filter first — it fixes 5E in most cases and takes about 5 minutes.

• Samsung Washer LE Error Code — Leak Detection Fix

  6 Jun, 2026

  Samsung washer LE error means a leak sensor in the base was triggered. Don't restart the machine — find the leak first. Here's exactly what to do.

• Samsung Washer nd Error Code — No Drain Fix

  6 Jun, 2026

  Samsung washer nd error means the machine failed to drain at the end of the cycle. Clean the pump filter first — it solves nd in most cases.