Lauda IN 550 XT FC Operation Manual page 54

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Error Description
The operator does not have the privileges to execute the
command. Another control section has exclusive operating
ERR_38
rights, which means that writing via this interface is not per-
mitted.
ERR_39 Operation is not permitted. Safe Mode is active.
ERR_40 Operation is not permitted. Safe Mode is switched off.
Operation is not permitted. Constant temperature equipment
ERR_41
is in error status.
Integral process thermostats with flow control unit V4