E43
Zanussi
Door Lock Triac / Control Fault
Washer shows E43 and will not start or lock the door.
Advertisements
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.
Advertisements
Possible Causes
Shorted door lock coil, Burnt triac on main PCB, Wiring short between PCB and lock, Moisture damage on control board
How to Fix / Troubleshooting
Safety: Unplug the appliance before any electrical testing.
- Test door lock coil: Disconnect the lock and measure resistance across the coil terminals. Replace the lock if the coil is shorted or open.
- Inspect wiring: Look for signs of short circuits, melted insulation, or moisture along the harness from the lock to the PCB.
- Check PCB: Remove the control board and inspect for burnt components near the door lock output. Typically, the entire board is replaced rather than repaired.
E43 usually indicates a control board failure; after confirming the lock and wiring are good, arrange for PCB replacement by a qualified technician.
Advertisements
Repair Difficulty
Professional Required
5/5
Required Part
Main Control Board
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements