• Whirlpool DU943PWKQ0 Error Code F1E1 — Main control board failure
• Whirlpool DU943PWKQ0 Error Code F2E1 — User interface keypad failure
• Whirlpool DU943PWKQ0 Error Code F3E1 — Water temperature sensor (NTC) failure
• Whirlpool DU943PWKQ0 Error Code F3E2 — Inlet water temperature too high
• Whirlpool DU943PWKQ0 Error Code F6E1 — Communication error between main board and UI
• Whirlpool DU943PWKQ0 Error Code F6E4 — Communication error (motor control to main board)
• Whirlpool DU943PWKQ0 Error Code F7E1 — Heating element fault
• Whirlpool DU943PWKQ0 Error Code F8E1 — Low water level — not filling
• Whirlpool DU943PWKQ0 Error Code F9E1 — Drain pump fault — not draining within time limit