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Technical Information
Service Manual
7.4 I FEEL function
When I FEEL command is received, the controller will operate according to the ambient temperature sent by the remote controller (For
defrosting and cold blow prevention, the unit operates according to the ambient temperature sensed by the air conditioner). The
remote controller will send ambient temperature data to the controller every 10min. When the data has not been received after
11mins,the unit will operate according to the temperature sensed by the air conditioner. If I FEEL function is not selected, the ambient
temperature will be that sensed by the air conditioner. I FEEL function will not to be memorized.
7.5 Timer function
General timer and clock timer functions are compatible by equipping remote controller with different functions.
(1)General Timer
Timer ON can be set at unit OFF. If selected ON time is reached, the unit will start to operate according to previous setting status.
Time setting range is 0.5-24hr in 30-minute increments.
Timer OFF can be set at unit ON. If selected OFF time is reached, the unit will stop operation. Time setting range is 0.5-24hr in
30-minute increments.
(2)Clock Timer
Timer ON
If timer ON is set during operation of the unit, the unit will continue to operate. If timer ON is set at unit OFF, upon ON time reaches
the unit will start to operate according to previous setting status.
Timer OFF
If timer OFF is set at unit OFF, the system will keep standby status. If timer OFF is set at unit ON, upon OFF time reaches the unit
will stop operation.
Timer Change
Although timer has been set, the unit still can be turned on/off by pressing ON/OFF button of remote controller. You can also set
the timer once again, and then the unit will operate according to the last setting. If timer ON and timer OFF are set at the same time
during operation of the unit, the unit will keep operating at current status till OFF time reaches. If timer ON and timer OFF are set at
the same time at unit OFF, the unit will keep stop till ON time reaches. In the future’s every day, the system will operate according to
presetting mode till OFF.
7.6 Sleep function
This mode is only valid in cooling and heating modes. The unit will select proper sleep curve to operate according to different set
temperature.
7.7 Compulsory defrosting function
When the unit is turned on in heating by remote controller and the set temperature is 16
o
C, press “+,-,+,-,+,-”continuously within 5s,
the indoor unit turns to compulsory defrosting setting and it will send compulsory defrosting mode to outdoor unit.
When indoor unit received the compulsory defrosting signal from outdoor unit, the indoor unit will quit from the compulsory defrosting
setting and it will cancel to send compulsory defrosting mode to outdoor unit.
7.8 Refrigerant recovery function
Turn to Freon recovery mode: After the unit is energized for 5min, and the unit is turned on at 16ºC under cooling mode, press light
button on remote controller for 3 times successively within 3s to turn to Freon recovery mode. Fo is displayed and it will send Freon
recovery mode to outdoor unit.
Quit from Freon recovery mode:After it turns to Freon mode, if it receives any signal from remote controller or it turns to Freon
recovery mode for 25 mins, it will quit from Freon recovery mode.
Turn to the action for Freon recovery mode: indoor unit will be turned on in cooling mode. The fan speed is super-high fan speed and
the set temperature is 16
o
C. The horizontal louver will turn to the minimum operation angle.
Quit the action for Freon recovery mode: The indoor fan operates at the previous set status by remote controller.
7.9 Pilot run function
When the set temperature is 30
o
C under cooling mode, press “+,-,+,-,+,-”continuously within 3s, the indoor unit turns to pilot run
setting mode and it will send pilot run mode to outdoor unit.
Pilot run mode: it operates under cooling mode and “dd” is displayed.
Quit the pilot run mode and indoor unit cancels “dd” display. If it receives “wrong wire connection of malfunction of expansion valve”
from outdoor unit, “dn” will be displayed.
