Code 700203: Temp. comp. value too high
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical Temp. comp. value too high 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
On calculating the compensation value, the maximum correction value has been exceeded. Feed Stop Read-in enable missing. 1. Check the currently measured temperature. 2. Check reference temperature. 3. Check set maximum correction value. 4. Check the sensors (measure resistance values). 5. Check TMU module. 6. Press [RESET] key. Message is cleared. The menu can be found under: Chapter 2.10 ‘Thermocontrol’ on page 12
Source: CHIRON Error Message Overview, all series (Siemens control, V2.0.6, 2012)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Chiron Siemens-Control CNC Alarms
Chiron controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 700203 on the Siemens-Control CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Chiron's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 545 Chiron Siemens-Control CNC codes.
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