FutureDesign MCT4 Multi-Loop Controller / HMI
FutureDesign MCT4 Multi-Loop Controller / HMI code DATA_FILE_SD: Data file error. SD card full or missing.
A data file error occurred because the memory card is full or missing, stopping data logging.
- Code
- DATA_FILE_SD
- Name
- Data file error. SD card full or missing.
- Controller
- FutureDesign MCT4 Multi-Loop Controller / HMI
- Type
- Data
- What it does
- Warning: the equipment keeps running and flags a problem
- Risk
- GREEN In your wheelhouse
- Reset
- Clears on its own when the condition goes away
- Source
- The manufacturer's manual (subscribers see which manual and page)
Updated July 22, 2026
How to fix it
Subscribers get:
- What to do next, in plain words
- Which manufacturer manual it comes from, linked
- The 3 common causes listed for this code
- Booking a live video call with Ben, a master booth technician ($250/hr, paid per call)
Questions about this code
What does FutureDesign MCT4 Multi-Loop Controller / HMI code DATA_FILE_SD mean?
A data file error occurred because the memory card is full or missing, stopping data logging.
Is FutureDesign MCT4 Multi-Loop Controller / HMI code DATA_FILE_SD dangerous?
It is graded green: in a working tech's wheelhouse with standard tools and low risk.
How do I fix FutureDesign MCT4 Multi-Loop Controller / HMI code DATA_FILE_SD?
The manual's fix and the step by step check for this code are in WERCS Diagnose, plans from $49 a month. For help right now, WERCS answers 24/7 at (877) 489-3727.
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