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Error code · ACP Amana · High-speed ovens

ACP Amana High-Speed Oven Error Code H2: Main Board

H2 on an Amana Xpress AXP22 or MXP22 touch panel oven points to the main board in a different way than A0, and the maker table calls for replacing the board. The oven may stop mid-program or refuse to start. Pull the plug, wait for the fan to stop, replug once, and leave the oven off if H2 returns.

Medium · inspection needed

Medium: the oven may not run, but leaving it unplugged protects the other parts.

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Code
H2
Maker
ACP Amana
Equipment
High-speed ovens
Applies to
AXP22 / MXP22 (touch panel)

What does ACP Amana error code H2 mean?

H2 is a main board code with its own entry, separate from A0. The main board runs the magnetrons, the heater, the fans and the signals from the panel, and the maker table calls for replacing the main board when H2 appears. The oven may stop in the middle of a program or refuse to start one. The manual's list names a main board that has failed in a way A0 does not cover, a harness connector that is loose at the main board, power surges at the outlet that damaged the board, and damp or heat damage inside the main board area. The owner step is to pull the plug, wait for the cooling fan to stop and plug it in again. If H2 returns, switch the oven off at the plug and leave it. This is a board code that restarts rarely clear, and running the oven with a doubtful board can stress other parts. Panels stay on; the board carries high voltage, and replacing it is a technician's job.

Affected models and control systems

This applies to the Amana Xpress AXP22 and MXP22 touch panel combination ovens, as covered in the ACP Commercial Service and Training Manual. The older AXP20/MXP20 list H-2 and H-3 together.

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

  • H2 on the display
  • The oven stops in the middle of a program
  • The oven refuses to start
  • The code returns after a restart

Possible causes

Listed in ACP Amana's documentation

  • Main board failed in a way A0 does not cover
  • Harness connector loose at the main board
  • Power surges at the outlet damaging the board
  • Damp or heat damage in the main board area

Other likely causes — what usually sits behind error code H2 on this control. A technician confirms which one it is before any part is replaced.

  • A harness connector with a burned terminal that drops voltage to the board
  • A surge from another machine on the same panel that damaged the board's output stage

Safe checks before calling for service

✓ What an operator can do
  1. Pull the plug, wait for the cooling fan to stop and plug it in again.
  2. If H2 returns, switch the oven off at the plug and leave it.
  3. Do not run the oven with a doubtful board.
  4. Panels stay on; the board carries high voltage.
  5. Tell us about any surge, flicker or tripped breaker beforehand.

How a technician diagnoses error code H2

  1. Read the code and confirm it repeats after a restart.
  2. Measure outlet voltage and check for surges.
  3. Inspect the main board harness connectors for burn marks.
  4. Look for moisture and heat damage on the board.
  5. Replace the main board once supply and harness check out.
! Leave this to a technician
  • Restarts rarely clear a board code, and the board carries high voltage.
  • Replacing it is work for a technician with the oven opened.
  • A surge that damaged this board may damage the next one, so the supply must be checked.

How error code H2 differs from similar codes

A0 and H3 on this oven are also main board entries, and the maker table lists replacing the main board for each. H2 is the one the maker table separates from A0.

Technical reference

Document
ACP Commercial Service and Training Manual
Edition
December 2011, 16400012
Models / control
AXP22 / MXP22 (touch panel)
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.

→Same maker

Related ACP Amana high-speed oven error codes

Error 1U / Error 1FACP Amana ACE14 / MCE14 Oven Error 1U / Error 1F: Memory Not FoundError 2ACP Amana ACE14 / MCE14 Oven Error 2: Memory Not ProgrammedError 3ACP Amana ACE14 / MCE14 Oven Error 3: High-Voltage BoardError 4ACP Amana ACE14 / MCE14 Oven Error 4: High-Voltage BoardError 5ACP Amana ACE14 / MCE14 Oven Error 5: Panel Short or Wrong BoardError 6ACP Amana ACE14 / MCE14 Oven Error 6: Options ScrambledError 7-OACP Amana ACE14 / MCE14 Oven Error 7-O: Temperature Sensor OpenError 7-SACP Amana ACE14 / MCE14 Oven Error 7-S: Temperature Sensor ShortedDoor OpenACP Amana ACE14 / MCE14 Oven Message: Door OpenError - Control TCO open / Oven too hotACP Amana ACE14 / MCE14 Oven: Control TCO Open / Oven Too HotA0ACP Amana High-Speed Oven Error Code A0: Main BoardA2ACP Amana High-Speed Oven Error Code A2: Display Board
H2Questions about ACP Amana error code H2
Is H2 the same as A0?

Both point to the main board, but the maker lists them separately. H2 is a failure A0 does not cover.

Will a restart fix it?

Rarely. One restart is fine, but if H2 returns the oven should stay off.

Does a surge cause it?

It can. We check the outlet and any surge protection before fitting a new board.

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Need help with ACP Amana error code H2?

A technician confirms the cause on site and gives you the price in writing before any work starts.

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