Product data

CONTROL SYSTEM
SM HGFHHF 1-A.1 GB 11-3
11.1.5.1 OFAN Speed Type
The OFAN motor is a one speed AC motor and controlled by the relay on outdoor controller.
11.1.5.2 General rules
1. The OFAN is ON when COMP ON during Cool, Dry and Heat Mode.
2. When the unit is off by remote control, in safety stops and stop after reaching to the temperature
point, the outdoor fan stops.
3. Outdoor fan OFF will compressor when COMP is OFF during cooling and heating mode.
11.1.6 Refrigerant control
Capillary is used in each mode.
11.1.7 Reversing Valve (RV) Control
Reversing valve is on in heat mode.
Switching of RV state is done only after COMP is off for over 2 minutes.
11.2 Fan Mode
In this mode, the IFAN may run at high,medium,low and automatic speed. The COMP, OFAN and
RV will be OFF.
In this mode, the range of setting temperature is 16~30C
11.3 Cool Mode
If RAT≥SPT+1, the unit starts cooling operation. In this case, the COMP and OFAN will operate and
the IFAN will run at the setting speed.
If RAT≤SPT-1, the COMP and OFAN will stop operating, while the IFAN will run at the setting speed.
If SPT-1＜RAT≤SPT+1, the unit will maintain the previous status.
In AutoFan user setting, fan speed will be adjusted automatically according to the SPT and RAT,
refer to 11.1.4
11.4 Heat Mode
If RAT≤SPT+2, the unit will operate in heating mode. The COMP, OFAN and RV will operate and
the IFAN will delay 3min to start at the latest
If SPT+2≤RAT≤SPT+4,the unit will maintain the previous status.
If RAT≥SPT+4, the COMP and OFAN will stop and the IFAN will blow for 60s at setting speed.
During this period, the fan speed cannot be switched.
11.4.1 Indoor Fan Control in Heat Mode