Hisense AMS-07UR4SNVT4 Service Manual page 75

6 . C O N T R O L M
6 . C O N T R O L M
the frequency; If the outdoor fan-coil temperature is too high, then the compressor will stop
working immediately. The compressor will reboot after the outdoor coil temperature reduces.
Discharge Temperature Protection
To prevent working conditions of compressor from deteriorating due to high discharge
temperature, the machine will implement real-time detection over the discharge
temperature.
If the discharge temperature grows higher, the compressor will be prohibited from
increasing the frequency; if the temperature continues to rise, the compressor will decrease the
frequency automatically; if the discharge temperature is too high, the compressor will stop
working immediately. The compressor will then reboot when the discharge temperature
returns to normal condition.
Oil-return Control
When the compressor continues to operate at low frequency, there will be an oil return.
The compressor increases the frequency, and thus to return the oil in refrigerate system to
the compressor.
Operation Mode
1 Mode Categories
Air conditioning mode is the operation mode set by users through remote controller,
four modes are available: cooling, heating, dehumidification, as well as fan mode.
2 Mode conflict
The operating mode of outdoor unit is decided by the operating mode of the indoor unit
firstly booted. Indoor unit subsequently booted will firstly determine whether it's own mode is
conflict with the outdoor mode. If so, the indoor unit will automatically shut down after three
beeps; If there is no conflict, the indoor unit will boot normally. The relationship of mode
conflict is as follows:
Driven
choice
Active mode
Cooling
Dehumidific
ation
Heating
fan
O D E L
O D E L
Cooling
√
√
×
√
Dehumidifica
tion
√
√
×
√
70
Heati fan
ng
× √
× √
√ ×
× √