Code 250-F332: Program cannot be run
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical Program cannot be run alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
[Cause of error] Either there is an error in the program, or the program has been modified. [Error correction] - Check whether the program is free of errors, and execute a GOTO or reset before restarting - Use the GOTO function in order to select the desired starting point for the restart. Or use a reset to restart the simulation from the beginning of the program. 10/2023 [839]
Source: HEIDENHAIN NC Error Messages — TNC7/640/620/320/128, CNC PILOT 640, MANUALplus 620 (10/2023)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Heidenhain TNC Series CNC Alarms
Heidenhain controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 250-F332 on the TNC Series CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Heidenhain's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 4497 Heidenhain TNC Series CNC codes.
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