Meiko M-iClean - Error 115: Wash tank overfill. Drain pump activated

🛑 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 MEIKO UM, UM+, US unit, error code 115 indicates a wash tank overfill, triggering the drain pump. This typically points to a malfunctioning level sensor or float switch, a stuck-open fill valve, or a blockage within the drain system preventing proper water evacuation. Immediately check for visible obstructions and sensor issues.

Can't fix it yourself?

Our certified technicians can help you on-site.

Technical Details

Repair Steps:

  1. Safety First: Disconnect the machine from its main power supply and water inlet before performing any inspections or repairs.
  2. Inspect Wash Tank Level Sensor/Float Switch: Carefully open the machine and locate the wash tank level sensor or float switch (often located on the side or bottom of the wash tank). Visually inspect it for any food debris, scale buildup, or foreign objects that might be preventing it from accurately detecting the water level or from moving freely. Gently clean the sensor or test the float switch’s movement. Check wiring connections to the sensor for any damage or disconnections.
  3. Check Fill Valve Operation: With the power still off, visually inspect the incoming water fill valve. Sometimes debris can prevent it from fully closing, causing a continuous fill. If accessible, disconnect the fill valve wiring and check its resistance with a multimeter (refer to the service manual for correct values). A faulty coil can cause it to remain open.
  4. Examine Drain System: Thoroughly inspect the drain pump and drain line for any blockages (food waste, foreign objects). A partially or fully blocked drain will cause overfilling even if the fill valve is working correctly. Manually clear any obstructions in the drain filter, drain pump impeller area, or drain hose. If the drain pump is activated but not effectively draining, check for power to the pump and ensure the impeller is not seized.
  5. Verify Pressure Switch/Transducer (if applicable): Some MEIKO units use a pressure switch or transducer connected via an air trap or tube to detect water level. Inspect the connecting tube for blockages, kinks, or leaks. Ensure the air trap is clear.
  6. Test Components & Control Board: If the visual inspections don’t reveal the issue, and you have access to the service mode, attempt to manually activate the fill valve and drain pump to verify their individual functionality. If components appear functional but the error persists, there may be an issue with the main control board’s input processing or output control for the fill valve or drain pump. This typically requires a qualified technician with diagnostic tools.
  7. Reset and Test: Reconnect power and water, then attempt to run a short cycle to see if the error clears. If it returns, further investigation or professional service is required.

Common Questions:

Q: What causes Error Code 115 on my MEIKO dishwasher?

A: Error 115 indicates a wash tank overfill. This is commonly caused by a faulty water level sensor or float switch, a fill valve that’s stuck open and continuously adding water, or a blocked or malfunctioning drain pump preventing the machine from emptying properly.

Q: Can I fix a MEIKO Error 115 myself, or do I need a technician?

A: You can often perform initial checks such as inspecting the wash tank for debris, checking the float switch for free movement, and clearing drain filters. However, diagnosing and replacing internal components like fill valves, level sensors, or drain pumps usually requires specific tools, technical knowledge, and a qualified technician.

Q: What are the potential risks if I ignore a wash tank overfill error?

A: Ignoring Error 115 can lead to severe consequences, including significant water damage to your kitchen floor and surrounding equipment, potential electrical hazards from water leaks, and prolonged downtime for your dishwasher. It’s crucial to address this error promptly to prevent further issues.

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.

Need Professional Help?

Our certified technicians can help you on-site.

Other M-iClean Error Codes

🔧 Fix this Error - Call Pro