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Error code reference

Maytag Microwave Error Code Err6

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Maytag codesMaytag microwave codes

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First step from the service manual

Replace Power Board.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What Err6 means on a Maytag microwave

Err6 on a Maytag microwave indicates a failure detected in the high voltage (H.V.) board. The control board monitors the H.V. board's operation and throws this code when it receives a signal that the board is not functioning within expected parameters. The H.V. board is responsible for converting household current into the high voltage required to power the magnetron, which generates the microwave energy that heats food. When this board fails, the microwave cannot safely or effectively produce heat.

For homeowners, the H.V. board is essentially the power-conversion component that makes heating possible. Without it working correctly, the microwave may appear to run but will not heat, or it may shut itself down entirely to prevent further damage. This is not a code that clears on its own or resolves with a simple reset in most cases.

Because the H.V. board operates at extremely high voltages, even with the unit unplugged, capacitors on this board can retain a lethal charge for an extended period. Any physical inspection or replacement work must include properly discharging the capacitor before touching any components in the high voltage circuit.

Source: manufacturer service documentation.

Common causes of Err6

  1. 01

    Failed H.V. board

    Part replacement

    The high voltage board itself has burned out, shorted, or developed an internal failure. This is the primary cause and the first component to replace when Err6 appears.

  2. 02

    Damaged wiring between H.V. board and control board

    Wiring / connection

    Wiring harness connectors between the high voltage board and the main control board can corrode, loosen, or sustain heat damage, causing the control board to misread the H.V. board's status and trigger Err6.

  3. 03

    Faulty high voltage capacitor causing board overload

    Part replacement

    A shorted or failing capacitor in the high voltage circuit can place excess load on the H.V. board, leading to board failure and the Err6 code. In this case, the capacitor may also need replacement alongside the board.

  4. 04

    Failed main control board misreporting H.V. board status

    Part replacement

    If the main control board develops a fault in the monitoring circuit, it may incorrectly report an H.V. board failure. This is less common but should be considered if a verified good H.V. board still produces Err6.

See the test procedure for each cause

Frequently asked questions about Err6

What does Err6 mean on a Maytag microwave?
Err6 means the control board has detected a failure in the high voltage (H.V.) board. The H.V. board converts standard household power into the high voltage needed to operate the magnetron, which is what actually heats your food. When this board fails, the microwave cannot heat properly and displays Err6 to indicate the fault.
Is it safe to use my Maytag microwave with Err6 showing?
No, you should not continue using the microwave while Err6 is active. A failed H.V. board means the high voltage circuit is not operating correctly, which can create a risk of further electrical damage or unsafe operation. Stop using the unit and unplug it until the H.V. board has been inspected and replaced.
How do I fix Err6 on a Maytag microwave?
The repair requires replacing the high voltage board. Before attempting this, unplug the microwave and discharge the high voltage capacitor, which can hold a lethal electrical charge even after the unit is unplugged. If you are not experienced with high voltage appliance repair, this job is best handled by a qualified technician. If you are comfortable with the safety steps, the H.V. board is a serviceable part that can be replaced with the correct model-specific component.
How much does it cost to fix Err6 on a Maytag microwave?
The H.V. board part itself typically ranges from $40 to $120 depending on the specific Maytag model. If you hire a technician, labor will add $80 to $150 or more, bringing the total repair to $120 to $270 in most cases. Given that mid-range microwaves can cost $150 to $300 new, it is worth comparing the repair cost against the age and model of your unit before proceeding.
Will resetting my Maytag microwave clear the Err6 code?
Unplugging the microwave for a few minutes may temporarily clear the display, but Err6 will return if the H.V. board has a genuine failure. This code reflects a hardware fault, not a software glitch, so a reset does not fix the underlying problem. The H.V. board needs to be inspected and replaced to resolve the error permanently.

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