31
Function and Control
Outdoor Units
1. Input Parameter Compensation and Calibration
(1) Check the input parameter compensation function
As the instruction feature of split unit, concerning the comfortable, in heating mode, the indoor ambient temperature of compressor stopping time is higher
than preset temperature.
(2) Check effective judgment controls of parameters
Effective judgment function of the outdoor exhaust temperature thermo-bulb
When conditions a and b are satisfied, the outdoor exhaust temperature thermo-bulb is judged not to be connected into place, the mainboard of outer
units will display failure of the outdoor exhaust temperature thermo-bulb (not connected into place), stop the unit for repairing, and resume it by remote
controls of ON/OFF.
2. Basic Functions
(1) Cooling Mode
1. Conditions and processes of cooling operation:
(1) If the compressor is stop, and [Tpreset – (Tindoor ambient –
¨
Tcooling indoor ambient temperature compensation)]
0.5
ć
, start up the unit for
cooling, and start to cooling operation;
(2) During operations of cooling, if 0
ć
[Tpreset – (Tindoor ambient –
¨
Tcooling indoor ambient temperature compensation)] < 2
ć
, the cooling operation
will be still running;
(3) During operations of cooling, if 2
ć
[Tpreset – (Tindoor ambient –
¨
Tcooling indoor ambient temperature compensation)], the cooling operation will
stop after reaching to the temperature point.
2. Temperature setting range
(1) If Toutdoor ambient
[Tlow-temperature cooling], the temperature can be set at: 16~30
ć
(Cooling at room temperature);
(2) If Toutdoor ambient < [Tlow-temperature cooling], the temperature can be set at: 25~30
ć
(Cooling at low temperature), that is, the minimum setting
temperature for outdoor unit judgment is 25
ć
.
(2) Dry Mode
1. Conditions and processes of dry operations: Same as the cooling mode;
2. The temperature setting range is: 16~30
ć
;
(3) Fan Mode
1. The compressor, outdoor fan and four-way valve are switched off;
2. The temperature setting range is: 16~30
ć
.
before power failure, will memorize the time 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.
(9) Locked protection to PG motor
If the indoor fan motor’s rotational speed after startup keeps slow for a continuous period of time, the unit will stop operation and display “H6”.
(10)Turbo Function
This function can be set in cooling or heating mode to quickly cool or heat the room
˄
Turbo function is not available in auto, dry and fan mode
˅
. After
pressing the turbo button, indoor fan will operate at super-high fan speed.
5. Malfunction Detection for Temperature sensor
(1) Indoor ambient temperature sensor:
Malfunction of temperature sensor will be detected at any time;
(2) Indoor tube temperature sensor
Malfunction of temperature sensor won’t be detected during defrosting period. It starts detecting the malfunction of temperature sensor after defrosting
is finished for 5 mins. Malfunction of temperature sensor will be detected at any other time.
(3) Protection of temperature sensor
1. When the temperature sensor is detected short circuit for 30s successively:
The detected temperature by the temperature sensor is too high and the complete unit will stop operation, meanwhile, the protection and malfunction of
temperature sensor will be displayed accordingly.
2. When the temperature sensor is detected open circuit for 30s successively: The unit will stop operation due to protection and the corresponding
malfunction of temperature sensor will be displayed directly.
6. Compulsory operating function of indoor unit
(1) Enter into compulsory operation control
After the unit is energized for 5mins, press the light button on remote controller for 3 times in 3s successively to enter into Freon recovery mode. Fo will
be displayed. When Freon recovery mode operated for 25mins, all loads will operate in cooling mode. (The setting fan speed is high fan speed and the
setting temperature is 16
ć
)
(2) Exit the compulsory operation control
Freon recovery mode will be exited after receiving any signal from remote controller or button and then the unit will operate at the current setting
command; Freon mode will also be exited after operating for 25mins and then the unit will be turned off.
