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Error code reference

Amana Microwave Error Code Err5

Failed H.V

Amana codesAmana microwave codes

Failed H.V. board or failed Touch Panel (also appears if touch panel is pressed for more than 30 seconds).

First step from the service manual

1. Disconnect oven from power supply. 2. Disconnect side touch panel connector from display board (J5). 3. Reconnect oven to power supply. 4. If Err5 reappears after 30 seconds, replace top touch panel. 5. If Err5 does not reappear after 30 seconds, replace side touch panel.

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

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What Err5 means on a Amana microwave

Err5 on an Amana microwave indicates a problem with either the high-voltage board or the touch panel assembly. The microwave's control system continuously monitors input signals from both the top touch panel and the side touch panel. When a sustained or erroneous signal is detected, the unit logs Err5. This can happen due to a genuine hardware failure in either touch panel or the high-voltage board, but it is also triggered automatically if any button on the touch panel is held down continuously for more than 30 seconds.

The diagnostic procedure isolates which component is responsible by disconnecting the side touch panel from the display board at connector J5. With that connector removed, the oven is powered back on. If Err5 returns within 30 seconds, the fault originates in the top touch panel, which should be replaced. If the error does not reappear, the side touch panel is the source of the stuck or continuously-active signal and requires replacement. This simple isolation test avoids unnecessary part replacement by pinpointing which panel is sending the faulty input.

In addition to physical component failure, a stuck or mechanically jammed button on either touch panel can produce this error without any electronic defect. Moisture intrusion, debris under a key, or a warped membrane can cause a button to register as continuously pressed. Inspecting each panel for physical damage or contamination before ordering parts is a reasonable preliminary step.

Source: manufacturer service documentation.

Common causes of Err5

  1. 01

    Faulty side touch panel

    Part replacement

    The side touch panel is the most commonly implicated component. If disconnecting it at connector J5 and powering the unit clears the error, the side panel is sending a continuous erroneous signal and needs replacement.

  2. 02

    Faulty top touch panel

    Part replacement

    If Err5 reappears within 30 seconds after the side panel connector is removed, the top touch panel is the source of the fault and must be replaced.

  3. 03

    Stuck or jammed button

    Wiring / connection

    A button physically stuck in the pressed position on either touch panel will trigger Err5 after 30 seconds. Inspect both panels for debris, moisture, or mechanical deformation that could hold a key down.

  4. 04

    Failed high-voltage board

    Part replacement

    The high-voltage board is listed as a possible cause of Err5. If the touch panel isolation test does not resolve the error, the high-voltage board may have an internal failure requiring replacement.

  5. 05

    Moisture or contamination under touch panel membrane

    Wiring / connection

    Liquid or grease intrusion beneath the touch panel membrane can create a persistent electrical contact that mimics a held button press. Cleaning or replacing the affected panel resolves this condition.

See the test procedure for each cause

Frequently asked questions about Err5

What does Err5 mean on a Amana microwave?
Err5 indicates a failure in the high-voltage board or one of the touch panels, or it appears when a touch panel button is held continuously for more than 30 seconds. The control system detects an abnormal sustained input signal and displays the error to prevent further operation. A simple disconnect test at the side panel connector can identify which component is at fault.
Can I fix Err5 on my Amana microwave myself?
The diagnostic steps involve disconnecting and reconnecting a panel connector at J5 on the display board and observing whether the error returns. A knowledgeable DIYer comfortable working with appliance electronics can perform this isolation test. However, replacing the high-voltage board involves components that can retain dangerous charge levels even after unplugging, so professional service is strongly recommended for that repair.
Is it safe to use my Amana microwave when Err5 is displayed?
The microwave should not be used while displaying Err5. The error signals that a control panel or the high-voltage board may be malfunctioning, and operating the unit in this state is not advisable. Disconnect the oven from power until the fault is diagnosed and repaired.
Will unplugging my Amana microwave reset the Err5 code?
Unplugging the microwave may temporarily clear the display, but Err5 will return if the underlying hardware fault or stuck button condition is still present. The error is not a simple fluke reset by cycling power. The root cause, whether a faulty touch panel or high-voltage board, must be identified and corrected to permanently clear the code.
How much does it cost to repair Err5 on an Amana microwave?
Repair costs vary depending on which component is at fault. Touch panel replacements are generally less expensive, with parts typically ranging from $30 to $90 depending on the panel and model. High-voltage board replacements tend to cost more for both the part and labor, often ranging from $80 to $200 or more when professionally serviced. Getting a diagnosis first helps avoid paying for the wrong part.

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