HP POD 20c Maintenance And Service Manual page 38

Removing the humidity sensor
Remove the four screws that secure the sensor cover (1), and then remove the cover (2).
1.
Remove the two self-tapping screws (3).
2.
Identify the sensor wires.
3.
Disconnect the sensor wires.
4.
Remove the two retaining screws, and then remove the humidity sensor housing from the wall (4).
5.
Replacing the humidity sensor
Re-attach the humidity sensor housing to the wall (1).
1.
Replace the two self-tapping screws (2).
2.
Reconnect the wires to the hot-aisle humidity sensor.
3.
Replace the sensor cover (3).
4.
Removal and replacement procedures 38