Regarding the alert test, I believe it's because when you run a test in Alert Manager you cannot select what Hardware Sensor you want to test against therefore it returns the first sensor for that node (in this case, the fan sensor). Another way you can test this specific alert is change the Hardware Sensor Value to be greater than or equal to 10. As your current temperature is 16, it should trigger the alert and send the email. If it works, you can then go back and modify it back to 30.
To trigger off either the Inlet Temp or Ambient Temp, you can use the following:
