Error Code
high
Merrychef e2s – Thermocouple Troubleshooting
On your MERRYCHEF eikon® e2s unit, a non-functioning thermocouple indicates a critical…
Merrychef e2s - Error E108: QTS PM FAILED - PM Code Is Incorrect For QTS
Critical / Stop Operation
Warning: The information provided here is for educational purposes only.
Working with commercial kitchen equipment involves high voltage, gas, and high temperatures.
We strongly recommend contacting a certified service technician for any repairs.
We are not responsible for any damage or injuries resulting from DIY repair attempts.
This information is provided 'as is' without any guarantees of completeness or accuracy.
TLDR
On your eikon® e2s unit, error E108: QTS PM FAILED indicates an incorrect Program Memory (PM) code for the Quick Touch System (QTS) board. This typically means the PM chip is either incorrectly seated, missing, or is the wrong part number for your specific eikon model. Ensure the correct PM chip is installed securely, transferred from the old board if replaced, and then update the unit's firmware.
Technical Details
Repair Steps:
- Safety First: Before any inspection or repair, always disconnect the Merrychef eikon® e2s unit from the main power supply and allow it to cool completely to prevent electrical shock or burns.
- Access the QTS Board: Carefully remove the necessary exterior panels, typically located behind the control interface, to gain access to the Quick Touch System (QTS) printed circuit board (PCB). Refer to your specific eikon® e2s service manual for precise location and panel removal instructions.
- Inspect PM Chip Seating: Locate the Program Memory (PM) chip on the QTS board. Gently but firmly press down on the chip to ensure it is fully and correctly seated in its socket. Look for any signs of damage to the chip or the socket pins, or any corrosion.
- Verify PM Chip Part Number: Check the part number printed on the PM chip. Cross-reference this part number with the specific model number and serial number of your eikon® e2s unit using the official Merrychef service documentation. The PM chip is unique to each eikon model.
- Transfer PM Chip (If Applicable): If you recently replaced the entire QTS board, ensure that the original PM chip from the old QTS board was correctly transferred to the new QTS board. This is a common oversight, as the chip contains model-specific programming that is not inherent to the board itself.
- Update Firmware: After ensuring the correct PM chip is properly installed, it is mandatory to load the latest, up-to-date firmware onto the unit. This typically requires a Merrychef service tool and specific software. Refer to the service manual for detailed firmware update procedures.
- Reassemble and Test: Once all steps are completed, carefully reassemble the unit, ensuring all connections are secure. Restore power and test the Merrychef eikon® e2s unit’s functionality, observing for the recurrence of the E108 error code.
Common Questions:
Q: What exactly is the QTS PM chip?
A: The QTS PM chip (Program Memory chip) stores critical software and configuration data specific to your Merrychef eikon® e2s model, enabling the Quick Touch System (QTS) to operate correctly. It’s essential for the oven’s core functionality.
Q: Why is it crucial to ensure the correct PM chip is installed?
A: Each Merrychef eikon model has a unique PM chip containing tailored firmware and configuration. Installing an incorrect or incompatible chip will cause error E108, leading to improper functionality or preventing the unit from starting, as the system won’t recognize its correct operating parameters.
Q: What should I do if I replaced the QTS board but didn’t transfer the PM chip from the old board?
A: If you replaced the QTS board without transferring the original PM chip, you must remove the new board, carefully transfer the PM chip from the old, original QTS board to the designated socket on the new board, and then reassemble. Always follow this with a mandatory firmware update to ensure full compatibility.
When to call a technician
For this error, we recommend calling a certified technician. Do not continue operation or attempt repair yourself.
- Equipment shows a critical or stop-operation fault.
- You smell gas, burning, or see smoke or sparks.
- Error returns after following the steps above.
- You are not trained to work on this equipment.
- Warranty or safety could be affected by DIY repair.