Diamond DA 40 Flight Manual page 271

DA 40 AFM
Pitot Heating
The Pitot probe, which provides measurement for the Pitot-static system, is electrically
heated. The heating is activated with a switch (PITOT) on the row of switches on the
instrument panel. The temperature is automatically kept constant by means of a thermal
switch on the Pitot probe, and as an additional safety measure a thermal fuse is built in.
If this thermal fuse is activated, the Pitot heating can no longer be switched on, and the
Pitot heating caution will be displayed. In this case the system should be serviced.
The Pitot heating caution will also be displayed whenever the
Pitot heating system is switched OFF.
Doc. # 6.01.01-E
NOTE
Rev. 8 01-Dec-2010
Airplane
Description
Page 7 - 45