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Technical Information
Service Manual
3.10 Display
3.10.1 Operation and Mode Icons
Upon energization, the unit will display all icons within 3 seconds. Under standby state, LED lamp of standby is on. If the unit is turned
on by remote controller, LED lamp of operation is on; meanwhile, the mark of current running mode will be displayed. If the light button
is turned off, no mark will be displayed.
3.10.2 Display of Nixie Tube on Indoor Unit
When energized & started for the first time, the indoor unit defaults to displaying current set temperature (16
̚
30 ). When set
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temperature display is set by remote controller, it will display set temperature; when room temperature display is set, it will display
room or outdoor temperature. After that, when operating the remote controller for other settings, the temperature display method will
keep original.
When operating the remote controller during room temperature display, the set temperature will be displayed for 5 seconds firstly and
then room temperature display returns. If there is malfunction, corresponding malfunction code will be displayed. For example, if
ambient temperature sensor has malfunction, “F1” will be displayed; if indoor pipe temperature has malfunction, “F2” will be displayed;
if jumper cap has malfunction, “C5” will be displayed.
3.11 Memory Function
Memorized items: mode, up & down swing, light, set temperature and set fan speed.
When power is recovered after power failure, the unit will automatically start operation according to memorized status. After power
recovery, the unit without timer setting before power failure will operate according to the last setting; the unit with general timer setting
which has not been fulfilled before power failure will memorize the timer setting and re-calculate the time after.
3.12 I FEEL function
When I FEEL command is received by controller, and also the ambient temperature is received from remote control, the controller will
operate according to the ambient temperature sent by the remote controller (For 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 for
every 10 minutes. When the data has not been received for 11 minutes, 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. Ambient
temperature of I FEEL displayed by controller is 1 ~59 .
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3.13 Health and Cold Plasma Function
When the unit is operating, turn health or cold plasma to be ON/OFF by health button in remote control (if there is no such button in
remote control, the health is on as default). Only when health or cold plasma is turned on and indoor fan is operation, such function
can be activated.
3.14 Static Dedusting Function
When the unit is operating, turn static dedusting ON/OFF by health button in remote control (if there is no such button in remote
control, the health is on as default). Only when static dedusting is turned on and indoor fan is operation, such function can be
activated.
3.15. Fahrenheit Display
Nixie tube displays current set temperature. If remote signal is Fahrenheit, the temperature will be displayed in Fahrenheit. The set
temperature range is 16~30
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˄
61~86
̧
˅
. Under Auto mode, in COOL operation and FAN operation, 25 (77 ) will be displayed,
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while in HEAT operation and FAN operation, 20 (68 ) will be displayed. For cooling
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-only controller, only 25 (77 ) will be
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displayed.
3.16 Locked protection to Indoor Fan Motor
If the indoor fan motor keeps low rotation speed for a continuous period of time after startup, the unit will stop operation and display
“H6”.
3.17 Mute Mode
3.17.1 Auto Mute: When selecting fan speed of auto mute, the fan speed will be adjusted according to change of ambient temperature;
when temperature meets the requirement of the setting, the unit will operate at lowest speed.
3.17.2 Mute mode: When selecting fan speed of mute, the unit will directly operate at lowest fan speed.
This position is start point
3.18 Compulsory defrosting function
When indoor unit operates in formidable environment, for example, temperature is too low, humidity is very high or there’s too much
frost on outdoor unit, which affects the heating efficiency of outdoor unit, user can select the compulsory defrosting function to improve
outdoor unit’s heating efficiency.
Entry method of compulsory defrosting function:
When the unit is turned on in heating by remote controller and the set temperature is 16
℃
, press “+,-,+,-,+,-”continuously within 5s, the
indoor unit turns to compulsory defrosting setting and it will send compulsory defrosting mode to outdoor unit. The outdoor fan will
operates in compulsory defrosting mode.
