I'm unable to say if my Librem 15 fan is working

Librem 15 laptop is getting very hot. I know it’s summer but temperatures are going as high as 87C with Firefox and Thunderbird open. I don’t know if my fan is working, I can’t hear anything and hardinfo isn’t getting me the sensors for the fan. How can I make sure the fan is working? Other people who have LIbrem can clearly hear it when it’s working? Because I can’t and I fear I will damage the hardware.

my librem 13 is absolutely cool. sounds like you’re having a problem - perhaps @mladen can be of help