10
The process above can only run in heating state, in other words, the controller will not
turn on defrosting in non-heating state.
Air defrost mode: when start defrost, the compressor stop running ,the fan continue
running; when stop defrost the compressor and fan continue running;
4 way valve defrost mode: when start defrost,the compressor and fan continue
running,the four-way valve energized;when stop defrosting the compressor and fan
continue running, the four-way valve powered off.
Water pump control
The controller can choose whether to use water pump or not (F40),0 means no water
pump function, 1 means use water pump. When
water pump runs, the compressor
start up ahead of the time of F41, delaying
turn off the compressor of the time of
F42.When external alarm and probation time over alarm,cut off water pump
output
immediately.The compressor won¡t start up until the water pump achieve the working
time of F41.
When the machine unit stop running,the water pump follow the below request:
F43stop, F44 run,and circle.
External alarm
The controller can connect a switching value as external alarm source (Pin 4, 5), Only
when the compressor is running ,and the external alarm occurs, the controller stops,
displays the alarm code ¡A11¡. External alarm signal has 5 modes (F50):
0: without external alarm
1: always open, unlocked
2: always open, locked
3: always closed, unlocked
4: always closed, locked
¡Always open¡ means in normal state, external alarm signal is open, if closed, the
controller will give an alarm; ¡Always closed¡ is on the contrary. ¡Locked¡ means that
when external alarm signal becomes normal, the controller is still in the alarm state,
and it needs to press any key to resume.
Running in different period of time
The controller contains real time clock, and can time accurately. In ¡Econ Mode¡, the
