Merrychef e4 - Error E 105: Supply Voltage High/Low

🛑 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 e4 unit, error E 105 indicates that the power supply voltage is outside its specified range. This critical issue prevents operation and can stem from incorrect mains voltage, poor wiring connections, or a faulty System Relay Board (SRB). Immediately cease operation, verify the incoming power supply, and inspect all internal and external wiring for integrity.

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Technical Details

Repair Steps:

  1. Safety First: Ensure the MERRYCHEF eikon e4 unit is disconnected from the main power supply before commencing any inspection or repair. Always wear appropriate personal protective equipment.
  2. Verify Mains Voltage: Using a calibrated multimeter, measure the incoming mains voltage at the unit’s power input terminal block. Compare this reading against the specified voltage range for your eikon e4 model (typically found on the rating plate or in the technical manual). Incorrect voltage (too high or too low) is a primary cause.
  3. Inspect External Wiring: Check the power cord and external wiring for any signs of damage, fraying, loose connections, or corrosion. Ensure the wall receptacle or circuit breaker connections are secure and providing stable power.
  4. Inspect Internal Wiring Connections: Remove the oven’s outer casing to access internal components. Carefully inspect all wiring harnesses connecting the main power input to the System Relay Board (SRB), and from the SRB to the voltage sensor. Look for loose spade connectors, crimped wires, or signs of heat damage. Reseat or repair any compromised connections.
  5. Examine the System Relay Board (SRB): Visually inspect the SRB for any signs of physical damage, such as burnt components, bulging capacitors, or damaged traces. A faulty SRB can incorrectly report voltage or fail to regulate it properly.
  6. Test the Voltage Sensor (if accessible/separate): While the SRB typically integrates voltage sensing, if there’s a discrete voltage sensor, test its output according to manufacturer specifications. A faulty sensor could misreport voltage levels.
  7. Replace Faulty Components: If, after thorough inspection and testing, the mains voltage is confirmed correct and wiring is sound, the System Relay Board (SRB) is the most probable culprit. Replace the SRB with a genuine MERRYCHEF spare part.
  8. Power Cycle and Test: After any repairs, reassemble the unit, reconnect the power supply, and power cycle the eikon e4. Monitor for the E 105 error. If the error persists, further investigation into the power distribution system of the facility may be required.

Common Questions:

Q: What does the E 105 error specifically mean for my MERRYCHEF eikon e4?

A: The E 105 error indicates that the oven’s internal voltage sensor on the System Relay Board (SRB) has detected that the incoming power supply voltage is either too high or too low, falling outside the acceptable operating parameters.

Q: Can I continue to use my eikon e4 oven with an E 105 error?

A: No, the E 105 error is critical and will prevent the oven from operating. Attempting to run the unit with an unstable or incorrect voltage can cause further damage to internal components or pose a safety risk.

Q: Is the E 105 error always caused by an issue with my building’s power supply?

A: While an incorrect mains voltage from your facility is a common cause, the E 105 error can also be triggered by poor internal or external wiring connections within the oven itself, or a failure of the System Relay Board (SRB) that monitors the voltage.

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.

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