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Technical Information
Service Manual
(9) Display
1. Upon energization within 2s, the unit will display all icons. Under standby state, running indicating mark is displayed. If the unit is started
by remote controller, running indicating mark gives off light; meanwhile, the mark of current running mode will be di played. If the light but-
ton is turned off, no mark will be displayed.
2. In defrosting, the heating indicator is on for 10s and off for 0.5s. In X-fan mode, the cooling indicator is on for 0.5s and off for 10s.
3. In auto mode, the nixie tube displays 25 in cooling and fan, and displays 20 in heating.
4. The nixie tube displays set temperature.
5. When there is a malfunction or protection, if timer off is set, this function will be executed.
(10) 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 recov-
ery, 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 power recovery.If there is timer function
in the last remote controller command but setting time has reached, the system will act as timer on/off setting before power failure. After
power failure, the system memorizes the operation states before power failure without timer action. Clock timer can not be memorized.
(11) I FEEL Function(reserved)
When I FEEL command is received and controller has received the ambient temperature sent by remote controller, the controller will oper-
ate at the temperature sent by remote controller (For cold air prevention, the unit operates according to the ambient temperature sensed
by the air conditioner). If it only received I FEEL command and hasn’t received the valid ambient temperature, air conditioner will operate
according to the ambient temperature sensed by itself. Remote controller will send the ambient temperature to controller every 10min. If
controller hasn’t received the ambient temperature sent by remote controller for 11min, air conditioner will operate according to the ambient
temperature sensed y itself. If I FEEl hasn’t been set, ambient temperature will adopt the temperature sensed by air conditioner. Controller
displays I FEEL ambient temperature 34°F~138°F.
(12) Health, Cold Plasma Function(reserved)
At ON status, press health button (if there isn’t health button on remote controller, health function is ON in default) on remote controller can
set health or cold plasma function. Health or cold plasma function can operate when it set ON and indoor fan operates.
(13) Fahrenheit Display Function
Niexie tube displays current set temperature. If the remote control signal is Fahrenheit, the temperature will be display by Fahrenheit.
Set temperature range is 61~86°F. Under auto mode, nixie tube displays 77°F in cooling and fan, and 68°F in heating. Cooling only con-
troller only displays 77°F.
(14) Locked Protection to Indoor Fan
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”.
(15) Compulsory Defrosting Function
When the outdoor environment is formidable, such as temperature is too low and humidity is too high, and there is too much frost in out-
door unit which affect the heating effect, users can select compulsory defrosting function to outdoor unit’s heating effect.
Compulsory defrosting function method:
When the unit is turned on in heating mode by remote controller and the set temperature is 61°F, press “+
、
-
、
+
、
-
、
+
、
-” buttons for 5s
successively, indoor unit will enter into compulsory defrosting setting and send the compulsory defrosting mode signal to outdoor unit and
then outdoor unit will enter into compulsory defrosting mode.