In Dynamic Chamber

1. Disconnect thermosensor connector.
2. Check resistance across sensor terminals.
3. Check that resistance corresponds to these values:

K OHMS AIR TEMP.

33 ± 4 25°C / 77°F
3.5 ± 0.4 85°C / 185°F

4. As an alternate method, remove sensor and place in a container of water with a thermometer.
5. Connect an ohmmeter across sensor terminals and slowly heat water.
6. Check that resistance varies according to the table above.
7. If not as specified, replace sensor.