Interface Diagnosis Function

An interface diagnosis is triggered by the MSS60 and used to check the interface. The MSS60 sends a PWM signal (100-300 Hz) for approx. 1 second with a cycle ratio of 96-99%.

If the interface is intact, the fan electronics for confirming the PWM signal cable are set to "low" for 2.5-3 seconds (M5 fan 1-1.5 s).