17
Technical Information
Service Manual
6.2 Brief Description of Modes and Functions
Indoor Unit
1.Basic function of system
(1)Cooling mode
1.Under this mode, fan motor, swing will work under setting status, the temp. range is 16-30ºC(61-86 Fahrenheit scale)
2.Outdoor unit malfunction or unit stop running, indoor unit will keep original running status, malfunction displayed.
3.When0 (Tset-Tamb.), if indoor fan motor is high speed, that the fanmotorist running in middle speed, the middle speed or low speed
will be maintained;(this condition should be executed when compressor ressor statr up); the super high speed will not rotate; When
(Tamb-Tset) ≥1ºC , the fan will return to the setting fan speed.
(2)Dehumidifying mode
1.Under this mode, fan motor will run atlow speed,swing will work at setting status,setting temp. range is 16-30ºC(61-86 Fahrenheit
scale)
2.Outdoor unit malfunction or protection, unit will stop, indoor unit will keep original running status, malfunction displayed.
(3)Fan mode
Under this mode,indoor fan motor couldbe setted at high,middle,low or auto speed,compressor,outdoor unit and valve will stop to run.
Under this mode, temp. range should be 16-30ºC(61-86 Fahrenheit scale)
(4)Heating mode
1.Under this mode, temp. range should be 16-30ºC (61-86 Fahrenheit scale)
2.Working condition and procedure of heating mode: When unit turn on and enter into heating mode, indoor unit enter into anti-cool
wind mode, when unit is stop running, and indoor fan motor turns on, blowing heat will act.
3.Protection function, under heating mode, compressor will stop to run due to malfunction happened, indoor fan motor will blow surplus
heat.
4.Defrosting control: When receiving the defrost ing signal from outdoorunit, displayerwill Heating indicator on indoor display is off for 0.5s
and then on for 10s during blinking,10slater, indoor fan motor will stop to run.
5.Anti-coold wind function
6.Blow heat air function
a.If heating temp. meets the compressor stop running condition, compressors, outdoor fan motor will stop to run, the upper and lower
guide louver will rotate to horizontal position L, indoor fan motor run at setting fan speed for 60s, then the indoor fan motor will stop to
run.
b.Due to PG motor block running, the air guide board will keep the position when it stopping. (under each mode), other malfunction unit
will stop to run, the upper and lower air guide louver will rotate to horizontal position L, indoor fan unit will run at setting fan speed and
run for 60s, indoor fan unit will stop to run.
(5)Auto mode:
1.When Tamb≥26 , select the cooling mode, at this time, the setting temp. is 25ºC (77 Fahrenheit scale)
2.Cooling and heating units: Tamb≤22ºC , will run at heating mode, at this time, the setting temp. is 20 (68 Fahrenheit scale)
3. Cooling only unit: When Tamb≤22ºC , it will run at Fan mode, the setting temp. is 25ºC (77 Fahrenheit scale)
4.When 23ºC ≤T
indoor amb.
≤ 25ºC ,firstly enter into auto mode and run at auto fan speed, other modes will run at auto mode, will keep the
previous running mode. (When entering into Dehumidifying mode, it will run at auto fan speed)
(6)Auto fan speed controlmode
2. Display state of indoor indicators
(1) State of indoor display board
1. When the unit is powered on, all patterns will be displayed and then only power indicator is on. When the unit is turned on with a
remote controller, the operating indicator is on and operation mode which is set currently is displayed.
2. In defrosting mode, heating indicator on indoor display is off for 0.5s and then on for 10s during blinking.
3. Set temperature is displayed on "Double 8".
