Carrier 42HVM109303 Service Manual page 43

according to the temperature from follow me signal, and the temperature collection function of room
temperature sensor will be shielded, but the error detective function of room temperature sensor will
be still valid.
2) When the follow me function is available, the PCB will control the unit according to the room
temperature from the remote controller and the setting temperature.
3) The PCB will take action to the mode change information from remote controller signal, but it
will not affected by the setting temperature.
4) When the unit is running with follow me function, if the PCB doesn't receive any signal from
remote controller for 7 minutes or pressing FOLLOW ME button again, the follow me function will be
turned off automatically, and the temperature collection function of room temperature sensor will be
available, the PCB will control the unit according to the room temperature detected from its own room
temperature sensor and setting temperature.
8.4.12 Self clean(optional)
For heat pump models which are provided with this function, after running in cooling or drying mode, if
the user press "Self Clean" button on remote controller, firstly, indoor unit runs in fan only mode for a
while, then low heat operation and finally runs in fan only again. This function can keep the inside of
indoor unit dry and prevent breeding of mold.
8.4.13 Refrigerant Leakage Detection
With this new technology, the display area will show "EC" when the outdoor unit detects refrigerant
leakage.
8.4.14 Louver Position Memory Function
When starting the unit again after shutting down, its louver will restore to the angle originally set by the
user, but the precondition is that the angle must be within the allowable range, if it exceeds, it will
memorize the maximum angle of the louver. During operation, if the power fails or the end user shuts
down the unit in the turbo mode, the louver will restore to the default angle.
8.4.15 8℃ Heating(optional)
In heating operation, the preset temperature of the air conditioner can be as lower as 8℃, which keeps
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