If a shutdown signal is configured in Climatix Mobile or '6AUX1-I'/'6AUX2-I' under the menu of I/O Configuration on the inbuilt display, free cooling function is shut down when the signal is enabled. Meanwhile, alarm '4RTU SHUTDOWN' is generated and displayed on the HMI.

During free cooling shutdown, compressor can open normally by-passing the free cooling function. The damper position depends on the parameter setting of '3SD ACT POS'. It is not affected by cooling/heating demand or occupancy status.