ACP Amana ACE14 / MCE14 Oven: Control TCO Open / Oven Too Hot
The Control TCO open message, also shown as Oven too hot, means the control thermal cut-out on an Amana ACE14 or MCE14 oven has opened. The oven stops cooking to protect itself. Let it cool, clean the filter, clear the vents, and stop using the oven if the message returns.
Medium: the oven stops cooking to protect itself, and repeated trips mean an airflow problem.
- Code
- Error - Control TCO open / Oven too hot
- Maker
- ACP Amana
- Equipment
- High-speed ovens
- Applies to
- ACE14 / MCE14 (touch pad speed-cook oven)
What does ACP Amana error - control tco open / oven too hot mean?
Error - Control TCO open / Oven too hot is displayed when a thermal cut-out in the control area has opened. A thermal cut-out is a safety switch that opens when its surroundings get too hot, and it stays open until things cool down. The oven stops cooking to protect itself, so you see the message and a dead oven rather than a cooking program. The maker lists checking the fan blade, the airflow through the filter and the fan motor, because a blocked filter or a weak fan is the usual cause. A cooling fan blade that is broken or slipping on the motor, a fan motor that no longer pulls air through the oven, an air filter or vent clogged with grease and dust, and hot nearby equipment such as a fryer or grill blowing heat at the oven can each raise temperatures until the cut-out trips. The owner steps are to unplug the oven for one minute, reconnect and test it after it has cooled, clean the air filter, and clear the vents. If the message returns, stop using it. The fan and cut-out sit in the live control area.
Affected models and control systems
This applies to the Amana ACE14 and MCE14 touch pad speed-cook ovens, as covered in the ACP Commercial Service and Training Manual. The G codes on the AXP families report overheating in other ways.
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
- Control TCO open or Oven too hot on the display
- The oven stops cooking
- The oven stays dead until it cools
- A hot fryer or grill sits beside the oven
Possible causes
Listed in ACP Amana's documentation
- Cooling fan blade broken or slipping on the motor
- Fan motor no longer pulling air through the oven
- Air filter or vent clogged with grease and dust
- Hot nearby equipment raising the air temperature around the oven
Other likely causes — what usually sits behind error - control tco open / oven too hot on this control. A technician confirms which one it is before any part is replaced.
- A fryer or grill exhaust blowing hot air at the oven's intake so its control area never cools
- A fan motor bearing that has slowed from kitchen grease, moving too little air
Safe checks before calling for service
- Unplug the oven for one minute, reconnect and test it after it has cooled.
- Clean the air filter and clear the vents.
- See whether a fryer or grill is blowing heat at the oven.
- If the message returns, stop using it.
- Tell us what sits next to the oven and how often the filter is cleaned.
How a technician diagnoses error - control tco open / oven too hot
- Read the message and let the oven cool to confirm the cut-out resets.
- Check the fan blade, motor and airflow through the filter.
- Measure ambient air at the intake and the exhaust.
- Test the thermal cut-out for continuity cold.
- Replace the fan, motor or cut-out that fails, and fix the airflow.
- The fan and cut-out sit in the live control area, so testing them means opening the oven.
- A cut-out that trips again will keep doing so until the cause of the heat is fixed.
- Airflow and surrounding heat have to be measured on site.
Technical reference
- Document
- ACP Commercial Service and Training Manual
- Edition
- October 2012, 16400018
- Models / control
- ACE14 / MCE14 (touch pad speed-cook oven)
- Section
- Display Diagnostics - Error Codes, printed p. 33 (PDF p. 60)
- 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 Oven too hot a real overheat?
It can be, since a blocked filter or weak fan lets the control area run hot. The cut-out opens to protect the oven.
Will it reset itself?
Once it cools, yes. It will trip again if the cause is still there.
How often should I clean the filter?
Often enough that it never looks clogged. Grease and dust are the usual cause.
Need help with ACP Amana error - control tco open / oven too hot?
A technician confirms the cause on site and gives you the price in writing before any work starts.