Panasonic CU-E18CKR Service Manual page 13

environment and performing temperature shifting. The compressor
at outdoor unit is operating following the frequency instructed by
the microcomputer at indoorunit that judging the condition
according to internal setting temperature and intake air
temperature.
8.1.1. Internal Setting Temperature
Once the operation starts, remote control setting temperature will
be taken as base value for temperature shifting processes. These
shifting processes are depending on the air conditioner settings
and the operation environment.The final shifted value will be used
as internal setting temperature and it is updated continuously
whenever the electrical power is supplied to the unit.