4
defrosting, in 5 minutes, compressor doesn’t run, in this state, “Defrost” indicator light will flash. But in
two conditions the controller can’t enter the dripping state: one is finishing the defrosting manually, and the
other is defrosting temperature sensor’s error.
External alarm
The controller can connect a switching value as external alarm source (Pin 4, 5), when the external
alarm occurs, the controller stops, displays the alarm code “A11” and generates alarm output. 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.
Password
In order to prevent irrespective persons from changing the parameters, you can set a password (F80),
and if you have set a password, the controller will hint you to enter the password after you press the key
“M” for 5 seconds, you must enter the correct password, and then you can set the parameters. If you don’t
need the password, you can set F80 to “OFF”. Notice that you must remember the password, and if you
forget the password, you can not enter the set state.
Wiring Diagram:
Notice:
1. Please read the guide carefully before using, and set the parameter accurately.
2. Please place the temperature sensor at the place of air return of the air-cooler.
3. The evaporator sensor must be fixed on the air return pipe of the evaporator, and if you don’t
use the evaporator sensor, please set the F59 to NO, or the controller will generate alarm.
4. Please use the temperature sensor which is supplied by our company.