Washing Machine
E51
The E51 error code on an Electrolux washing machine signals a motor control fault — specifically a problem with the motor triac circuit on the control board. It’s a moderately serious fault that will stop your machine mid-cycle and typically requires either a reset or professional repair.
What does this error mean?
E51 means the machine’s electronic control board has detected an abnormal current reading from the motor’s triac — the component that regulates power to the motor. In plain terms, the board thinks the motor is receiving power it shouldn’t be, or the switching component has failed. This is a protection mechanism to prevent damage to the motor or control board.
Est. repair cost
£10–£20 DIY motor brushes; £90–£180 for professional PCB or motor repair
🔍 Likely causes
🛠️ Step-by-step fix
Perform a hard reset: switch the machine off at the wall socket, leave it unplugged for 10–15 minutes, then plug back in and restart. A one-off power surge can trigger E51 and a reset clears it.
Check the drum for obstructions: an overloaded or jammed drum creates extra load on the motor. Remove laundry, spin the drum by hand to confirm it turns freely, then try a short cycle.
Inspect the motor brushes (if confident): on many Electrolux models the carbon motor brushes are accessible from the rear or underside without opening sealed electrical components. If brushes are worn down to less than 1 cm, replace them — replacement brushes typically cost £10–£20 and are a DIY-friendly job.
Check wiring connections to the motor: with the machine unplugged, visually inspect the wiring harness running to the motor for any obvious burns, pinches, or disconnected connectors. Reseat any loose connectors.
Do not attempt to repair or replace the PCB triac yourself — this requires specialist soldering skills and multimeter testing of live components. Stop here and call a qualified appliance engineer.
📞 When to call a professional
If the E51 error returns immediately after a hard reset, or the drum moves freely and brushes look fine, the fault almost certainly lies with the PCB or motor — both of which require a qualified appliance engineer. When calling, tell them: ‘My Electrolux washing machine is showing error code E51, which I understand is a motor triac fault.’ This helps them bring the right parts.
⚖️ Repair or replace?
A professional repair for E51 — covering PCB repair or motor replacement — typically costs £90–£180 in the UK including labour. If your machine is under 5 years old, repair is almost always worth it. If it’s 8 years or older and repair costs exceed £130, compare against a new mid-range machine (£350–£500) and consider replacement, especially if other components are ageing.