ACP Amana Oven Error Code A0 / A2: Main or Display Board
A0 / A2 on an older Amana Xpress AXP20 or MXP20 touch pad oven means the control points to the main board or the display board. The oven may refuse to start, freeze or show odd characters. Unplug it, plug it back in, clear the filter and vents, and call us if the code returns.
Medium: the oven may not run or respond, but unplugging it is safe and nothing else is affected.
- Code
- A0 / A2
- Maker
- ACP Amana
- Equipment
- High-speed ovens
- Applies to
- AXP20 / MXP20 (hyphenated codes)
What does ACP Amana error code A0 / A2 mean?
On the older AXP20 and MXP20 ovens, two boards share the work. The main board runs the oven, and the display board shows the messages and reads the touch pad. The control keeps both talking to each other, and it reports A0 / A2 when that exchange breaks down. The code shows at start-up or after a program has started. What you notice depends on which side stopped responding: the oven may refuse to start, the screen may freeze, or odd characters may appear. The control cannot always say which board is to blame, which is why the code names both. The maker lists one owner step, which is to unplug the oven and plug it back in. That restarts both boards and clears a momentary glitch. If the restart does not help, the usual suspects are the ribbon cable between the boards, a board that has failed, a screen link that has become unreliable, or damp and heat damage built up over the years. The boards sit inside the sealed body beside high voltage, so opening the oven is not an operator job.
Affected models and control systems
This applies to the older Amana Xpress AXP20 and MXP20 touch pad combination ovens, which use hyphenated codes, as described in the ACP Commercial Service and Training Manual. The newer AXP22 and MXP22 ovens list A0 and A2 as separate entries.
Code numbers and their meaning can change between control generations. We match the full model and control before acting on a code.
What you may notice
- A0 or A2 appears at start-up
- The oven refuses to start a program
- The screen freezes partway through
- Odd characters show on the display
Possible causes
Listed in ACP Amana's documentation
- Ribbon cable between the main and display boards loose
- Main board failed and no longer running the oven
- Display board screen link unreliable
- Either board damaged by damp or heat over the years
Other likely causes — what usually sits behind error code A0 / A2 on this control. A technician confirms which one it is before any part is replaced.
- A ribbon cable that has worked loose after years of door slams and heat cycles near the boards
- A display board whose screen link drops out when it warms up, so the screen freezes mid-program
Safe checks before calling for service
- Unplug the oven and plug it back in; the maker lists that as the one owner step.
- Then look at whether the screen shows normally or freezes.
- Clear the filter and vents.
- If A0 or A2 returns, switch the oven off at the plug.
- Tell us whether the code showed at start-up or after a program began, since that helps point to the board.
How a technician diagnoses error code A0 / A2
- Read which code shows and when it appears.
- Check the supply at the outlet and the oven's power input.
- Inspect the ribbon cable and the connectors between the main and display boards.
- Look for damp, scorching or heat damage on both boards.
- Replace the board or cable that tests bad, not both by default.
- The boards sit inside the sealed body beside high voltage, which is not safe for an operator to open.
- A loose ribbon cable and a failed board give the same code, and only testing shows which one needs replacing.
- Swapping boards without testing risks paying for the wrong part.
How error code A0 / A2 differs from similar codes
On the AXP22 and MXP22 ovens A0 points to the main board and A2 to the display board, each listed on its own. The older AXP20/MXP20 combines them in one entry.
Technical reference
- Document
- ACP Commercial Service and Training Manual
- Edition
- December 2011, 16400012
- Models / control
- AXP20 / MXP20 (hyphenated codes)
- Section
- Display Diagnostics - Error Codes: AXP20/MXP20 (hyphenated codes, M-0 to M-2) printed p. 58 (PDF p. 65); AXP22/MXP22 printed p. 74 (PDF p. 81)
- Checked
- October 2026
We use the maker's document to read the code and do not reproduce it. Always confirm the complete model and control before applying these steps.
Related ACP Amana high-speed oven error codes
Is A0 / A2 one problem or two?
On this older oven the code covers both boards, so the cause is the main board, the display board, or the link between them.
Will unplugging the oven fix it?
It can, if the glitch was momentary. If the code returns, the boards or cable need testing.
Is it safe to keep using it if the screen freezes?
We would not. An oven you cannot control reliably should stay unplugged until it is checked.
Need help with ACP Amana error code A0 / A2?
A technician confirms the cause on site and gives you the price in writing before any work starts.