Code 700208: Malfunction cooling unit 1
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical Malfunction cooling unit 1 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
Cooling unit for cooling the spindles or axes has a malfunction. PLC input signal "Fault cooling unit 1" is not present. Error message appears immediately. Exception: The effect of the malfunction only manifests itself 10 seconds after the pump (cooling unit) is switched on. "Feed Stop", as far as no thread-cutting or tool change is pending. "Spindle Stop", as far as no thread-cutting or tool change is pending. The controller enable of the spindles and axes is cancelled. 1. Remedy malfunction on the cooling unit. 2. As soon as the malfunction has been remedied, press the [FEED START] or [JOG] and [RESET] keys. Message is cleared. Please refer to the cooling unit operating instructions for detailed instructions on malfunction causes. Error messages Cooling unit Malfunction cooling unit 1
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 700208 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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