Carrier 33CS450-01 Owner's Manual page 101

Calibrating the Temperature and Humidity Sensors
Under normal circumstances it will not be necessary to adjust the
calibration of the temperature and humidity sensors. If calibration is
required, please contact a trained HVAC technician to correctly
perform the following procedure.
@
Place the thermostat in the
OFF mode
O
Press and hold the MODE
button Wh[e holding the
MODE button, press and hold
the FAN button for 5 seconds
A[[ icons w}[[ appear on the
d splay
@ ?!:" TNERMOST,,TSENSOR
, .3_3 °
F're_ N_ UP _nr4 DQ_N !_#1tor_
at the same time twice. The
thermostat temperature wll be
d splayed and may be calibrated _
f_
using the UP or DOWN buttons
TWECE
O REMOTE SENSOR
Press the MODE button once The
remote sensor temperature wi[[ be MOBE displayed and may be calibrated using the
UP or DOWN butLons if a remote sensor
is not nsLa[[ed, a temperature read ng
-127 degrees wi[[ appear
HUMIDITY SENSOR
Press the MODE button once The
MODE _ relative humid ty at the thermostat will be
displayed and may be calibrated using the
UP or DOWN buttons
After calibration is complete, press the MODE button once to save your
changes and return to normal operation.
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