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Error code · ACP Amana · High-speed ovens

ACP Amana High-Speed Oven Error Code H1: Incorrect Set Point

H1 on an Amana Xpress AXP22 or MXP22 touch panel oven means the main board reports a set point that is incorrect. The maker's one step is to unplug the oven and plug it back in. If the setting stays wrong, the board needs service.

Medium · inspection needed

Medium: the oven stops on a wrong stored setting, and a restart often clears it.

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Code
H1
Maker
ACP Amana
Equipment
High-speed ovens
Applies to
AXP22 / MXP22 (touch panel)

What does ACP Amana error code H1 mean?

The control checks the temperature setting it is working to. H1 appears when the main board reports a set point that is incorrect, so the stored number does not match what the oven should be using. A glitch or corrupted setting can cause a mismatch. The maker chart gives one step: unplug the oven and plug it back in. If the setting stays wrong, the board needs service. The manual's list names a temperature setting corrupted in the main board memory, a power glitch at the outlet that scrambled the stored set point, a main board memory problem that keeps the wrong value, and a recent program edit that left a mismatched set point. Unplug the oven for a moment and plug it back in, then choose the program again and see whether the set point matches. If it still disagrees, leave the oven off and call us. The board that holds the setting sits next to high voltage parts, so a technician reloads the values and tests whether they hold.

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 write this reading H-1.

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

  • H1 on the display
  • The set point shown disagrees with your choice
  • The oven will not start the program
  • H1 follows a program edit

Possible causes

Listed in ACP Amana's documentation

  • Temperature setting corrupted in the main board memory
  • Power glitch at the outlet that scrambled the stored set point
  • Main board memory holding the wrong value
  • Recent program edit leaving a mismatched set point

Other likely causes — what usually sits behind error code H1 on this control. A technician confirms which one it is before any part is replaced.

  • A program edit that was saved while the oven lost power and left a half-written value
  • A memory location on the main board that has started failing and returns a different number each time

Safe checks before calling for service

✓ What an operator can do
  1. Unplug the oven for a moment and plug it back in; the maker lists that as the step for H1.
  2. Choose the program again and see whether the set point matches.
  3. If it still disagrees, leave the oven off and call us.
  4. The board that holds the setting sits next to high voltage parts.
  5. Tell us if you edited the program just before.

How a technician diagnoses error code H1

  1. Read the code and note any recent edits or power events.
  2. Reload the set points for the program.
  3. Power cycle and check whether the values hold.
  4. Test the main board memory.
  5. Replace the main board only if the values will not hold.
! Leave this to a technician
  • Memory on the main board cannot be tested from outside the oven.
  • The board sits next to high voltage, so the oven must stay closed for an operator.
  • A set point that keeps changing points to the board and needs a technician's confirmation.

How error code H1 differs from similar codes

H0 on the same oven is a missing signal at J1, and H2 and H3 point to the main board. H1 is the incorrect set point entry.

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
H1Questions about ACP Amana error code H1
Is H1 caused by my program?

It can be. A recent program edit that left a mismatched set point is listed by the maker.

Will it clear on its own?

A restart often clears it. If the setting stays wrong, the board needs service.

Is H1 the same as H-1?

Yes in meaning. H-1 is the older AXP20/MXP20 spelling.

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