Airstream TC5-2V4SA User Manual page 13

and the letter "P".
For each additional probe connected to the controller:
n
Press the push-button once again. If the probe is not defective, the
letters "PR#" (where # is the number of the input to which the probe
is connected) are displayed, alternating with the on/off state of the
probe and the temperature measured by the probe. If the probe is
defective, the letters "PR#" are displayed, alternating with the on/off
state of the probe and the letter "P".
TC5-2V4SA
TC5-2V4SA rev.06
13