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2. Basic Operating Principle
2.1
Compressor control
After controller powered on, the compressor will delay for a moment to protect itself (F21). The
indicator light will flicker at the same time. If checked external input is alarming, the compressor will stop.
2.2
Fan control
Fan default under control of condensing temperature. It will open when temperature is higher than
(including) set point (F42) , closed when lower than the set point - return difference (F43) . If condensation
sensor fails, the fan output along with the compressor.
2.3
External alarm
When external alarm occurs, stop the compressor and fan. 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 is 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.
2.4
Command
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 "0000". Notice that you must remember the password, and if you forget
the password, you cannot enter the set state.
3. Wiring Diagram
4. Notes
Please use the temperature sensor allocated by our company.
If compressor power is less than 1.5HP, can direct control by internal relay. Otherwise need to
connect ac contactor.
Fan loaded with no more than 200w.
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