Hello , I have the same problem in my CAT3850 :
WS-C3850-48T 03.03.05SE cat3k_caa-universalk9
Switch 1: SYSTEM TEMPERATURE is OK
Inlet Temperature Value: 20 Degree Celsius
Temperature State: GREEN
Yellow Threshold : 41 Degree Celsius
Red Threshold : 56 Degree Celsius
Hotspot Temperature Value: 39 Degree Celsius
Temperature State: GREEN
Yellow Threshold : 105 Degree Celsius
Red Threshold : 125 Degree Celsius
SWITCH: 2
Switch 2 FAN 1 is OK
Switch 2 FAN 2 is OK
Switch 2 FAN 3 is OK
FAN PS-1 is OK
FAN PS-2 is OK
Switch 2: SYSTEM TEMPERATURE is OK
Inlet Temperature Value: 20 Degree Celsius
Temperature State: GREEN
Yellow Threshold : 41 Degree Celsius
Red Threshold : 56 Degree Celsius
Hotspot Temperature Value: 38 Degree Celsius
Temperature State: GREEN
Yellow Threshold : 105 Degree Celsius
Red Threshold : 125 Degree Celsius