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Error code reference

Maytag Washer Error Code E305

Mitsubishi inverter overvoltage alarm (OV3).

Maytag codesMaytag washer codes
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What the E305 error code actually means

The E305 code means the electronic motor controller inside your washer detected a dangerously high voltage spike and shut itself down to avoid damage. This most commonly happens when clothes clump together on one side of the drum during the spin cycle, causing the machine to react in a way that sends a voltage surge back into the controller. Redistributing the laundry and restarting the cycle often resolves the issue if an unbalanced load was the cause.

Diagnostic procedure

The full E305 procedure

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First diagnostic step
Check if there was a severe unbalance during extraction.
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Most common causes of E305

Ranked by how often they cause this code
  1. 1Severe load imbalance during spin
  2. 2Incoming line voltage surge
  3. 3Degraded inverter drive capacitors
  4. 4Faulty inverter drive unit
  5. 5Worn or defective motor

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Questions people ask about E305

What does E305 mean on a Maytag washer?
E305 indicates an overvoltage alarm (OV3) from the Mitsubishi inverter drive that controls the washer's motor. The inverter detected that its internal DC bus voltage exceeded a safe limit and shut down to protect the drive and motor. This most commonly occurs when a severe load imbalance during the spin cycle causes rapid motor deceleration, which feeds voltage back into the inverter.
Will resetting the washer clear the E305 code?
A power reset, done by unplugging the washer for a few minutes and plugging it back in, may clear the E305 code temporarily. However, if the underlying cause such as a load imbalance, voltage surge, or failing inverter drive is not corrected, the fault will return. A reset alone is not a repair and should only be used after addressing the root cause.
How much does it cost to repair an E305 error on a Maytag washer?
If the cause is simply a laundry imbalance, there is no parts cost involved. If the Mitsubishi inverter drive unit requires replacement, parts and labor costs typically range from $200 to $500 or more depending on parts availability and local labor rates. A motor replacement, if needed, can fall in a similar or higher range, making a professional diagnosis worthwhile before ordering components.
How do I fix the E305 error on my Maytag washer?
Start by opening the washer and redistributing the laundry so the load is balanced evenly in the drum. Restart the cycle and monitor whether the error returns during the spin phase. If the fault recurs with balanced loads, check the incoming supply voltage at the outlet and inspect the inverter drive unit for signs of failure, as a damaged drive may require professional repair or replacement.
Is it safe to use my Maytag washer when E305 appears?
You should not continue operating the washer while the E305 fault is active, as the inverter has shut down to protect itself from damage. Repeatedly forcing the machine through cycles without diagnosing the cause can accelerate wear on the inverter drive and motor. Resolve the imbalance issue or have the drive inspected before resuming normal use.

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