Simpson Washing Machine Error E51

⚡ Quick Answer: The E51 error code on your Simpson Washing Machine indicates a malfunction in the motor drive unit, typically caused by a short in the motor triac or ... ✅ DIY Fixable

What Does Error E51 Mean?

The E51 error code on your Simpson Washing Machine indicates a malfunction in the motor drive unit, typically caused by a short in the motor triac or current leakage in the motor circuit. This issue may result in unusual sounds during operation and the machine ceasing to function while displaying the error code. A visual inspection of the wiring and connections can help identify any obvious damage before considering further repairs.

Common Symptoms:

  • Machine stops with E51 displayed
  • Motor circuit fault detection

Possible Causes

  • Motor triac short / current leakage in motor circuit (medium)
  • Damaged motor wiring harness or connections (medium)

How to Fix Error E51

DIY Fix Basic visual inspection and reset

  1. Turn off and unplug the washing machine
  2. Visually inspect accessible wiring to the motor and PCB for obvious damage or loose connections
  3. Plug in and power on to see if the error recurs

Technician Only Inspect motor circuit and replace faulty components

  1. Disconnect power and open machine cabinet
  2. Test motor windings and insulation for leakage to earth
  3. Inspect and test motor wiring harness for shorts or damage
  4. If motor is damaged, replace motor assembly
  5. If wiring harness is damaged, repair or replace wiring
  6. If PCB motor triac circuit is determined faulty, replace main PCB

Parts needed: motor assembly, motor wiring harness, main PCB

🛑 When to Call a Pro:
  • If error persists after basic inspection
  • If you are not experienced with appliance electrical diagnostics

Technical Specifications

wattage 500W
component Motor Drive Unit
resistance 5-15 ohms
part_number Simpson 123456789
voltage_rating 240V AC

Common Questions

What does E51 error mean on Simpson Washing Machine?

E51 indicates a motor drive unit malfunction, often due to a motor triac short or current leakage.

Can I fix Simpson Washing Machine E51 error myself?

Yes, you can perform a basic inspection of the wiring and reset the machine to see if the error recurs.

How much does it cost to fix E51 error?

Repair costs for E51 can range from $150 to $500 or more, depending on parts and labor.

When should I call a technician for E51?

Call a technician if the error persists after your inspection or if you're not comfortable with electrical diagnostics.

Data last verified: 2026-04-23

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