Code 700206: Qty of temp. sensors not defined
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical Qty of temp. sensors not defined 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
The entered number of sensors is set to 0. Feed Stop Read-in enable missing. 1. Correctly define the "number of sensors". (see description for 840D or Fanuc temperature compensation) 2. As soon as the number is entered correctly, press the [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 700206 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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