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Error code reference

Maytag Microwave Error Code Err1

Failed H.V

Maytag codesMaytag microwave codes
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What the Err1 error code actually means

Your Maytag microwave has detected a problem with one of two components: either the high-voltage board that powers the cooking system, or the touch panel on the front of the microwave. The touch panel may be stuck sending a signal as if a button is being held down, or the internal power board may have failed. Either way, the microwave has shut itself down and will need a technician to diagnose which component is at fault before it can be used again.

Diagnostic procedure

The full Err1 procedure

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1
First diagnostic step
Replace H.V. board; if touch panel is shorted, replace touch panel. Before scheduling service, instruct customer to unplug oven for 1 minute, reconnect power, and retest.
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Most common causes of Err1

Ranked by how often they cause this code
  1. 1Failed H.V. Board
  2. 2Shorted Touch Panel
  3. 3Damaged Wiring Between Touch Panel and Control Board
  4. 4Control Board Communication Fault

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Questions people ask about Err1

What does Err1 mean on a Maytag microwave?
Err1 indicates the microwave has detected a failure in the high-voltage (H.V.) board or a shorted touch panel. The H.V. board manages the high-voltage power supply for the magnetron, and the touch panel is the membrane keypad on the front of the unit. Either component failing can trigger this specific code.
Is it safe to use my Maytag microwave when Err1 is displayed?
No. Err1 points to a fault in the high-voltage board or touch panel, and the microwave will not function reliably or safely with this error active. A failed H.V. board can cause erratic behavior in the high-voltage circuit, which poses a fire and shock risk. Do not attempt to operate the microwave until the faulty component has been replaced.
Will unplugging my Maytag microwave clear the Err1 code?
Unplugging the microwave may temporarily clear the Err1 display, but the error will return once the unit is powered on if the underlying component has not been repaired. Err1 is a hardware fault code, not a software or memory error, so a reset does not address the failed H.V. board or shorted touch panel causing it.
How do I fix Err1 on a Maytag microwave?
Start by replacing the H.V. board, as this is the most common cause of Err1. If the error persists after replacing the H.V. board, inspect the touch panel for signs of damage or shorting and replace it if necessary. Both repairs require disconnecting the microwave from power and discharging the high-voltage capacitor before working inside the unit, which stores a lethal charge even after unplugging.
How much does it cost to fix Err1 on a Maytag microwave?
A replacement H.V. board for a Maytag microwave typically costs between $40 and $120 depending on the model. A replacement touch panel generally runs $30 to $80. If you hire a technician, expect to add $75 to $150 in labor. Because the H.V. board and capacitor circuit carry lethal voltage, DIY repair is only advisable for those comfortable with high-voltage appliance work and proper capacitor discharge procedures.

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