Main Function
Temperature display, temperature controlling(refrigeration/heat mode),compressor start delay protection, it can run periodically with the on-off rate when the temperature sensor is broken.
2 defrost modes (electric heat, hot gas), 3 defrost start mode (time alternation, accumulative compressor running time, real time clock), 2 defrost end mode (timing, controlled by both temperature and time), dripping, manual defrost, 7 fan running modes(fan ahead or delay start, delay stop, temperature controlling start and stop, time controlling start and stop, always on, always off, run or stop when defrosting), sensor error alarm, one external alarm input, password, real time clock, C/F unit change.
Technique Index
1Temperature display range: -50150(The resolution is 0.1)
-58302(The resolution is 0.1)
2Power supply: AC 220V±10% or AC 380V±10% 50Hz (Refer to the wiring diagram)
3Operating environment: temperature -3080, humidity≤85%
4Relay contact capability: 8A/250VAC (pure resistive load)
5Temperature sensor: NTC R25=5kΩ, B (25/50) =3470K
Basic Operating Principle
1Temperature controlling
The controller has 2 temperature controlling mode: refrigeration and heat (F29). Temperature controlling point is controlled by "setting temperature (F11, or press the "S" key for some time to set)" and "temperature difference (F12)". In refrigeration mode, the controller begins to refrigerate when the temperature sensor is over "setting temperature temperature difference", and it stops refrigerating when the temperature is under "setting temperature temperature difference"; In heat mode, the controller begins to heat when the temperature sensor is under "setting temperature
temperature difference", and it stops heating when the temperature is over "setting temperature temperature difference"
2High and low temperature alarm
When the temperature is higher than "High temp alarm temp (F15)"and the continuous time is over "Temperature alarm delay (F17)", the high temperature alarm occurs, and when the temperature is lower than alarm point, the high temperature is eliminated immediately. The high temp alarm can delay when defrosting, in other words, when defrosting or after defrost ending (The time can be set by the parameter "F39"), the high temp alarm will not occur. If F39=0, it means that the high temp alarm is not related to the defrost state. When the temperature is lower than "Low temp alarm temp (F16)"and the continuous time is over "Temperature alarm delay (F17)", the low temperature alarm occurs, and when the temperature is higher than alarm point, the low temperature is eliminated immediately.
3Compressor delay when power on
The compressor delay when power on is set by F20, for example, 3 minutes, the controller
does not start the compressor within 3 minutes after power on
4Compressor delay time
The compressor delay time is set by F21, for example, 3 minutes. The controller contains a "compressor halt calculagraph", and it begins to time when compressor stops, the program first check the calculagraph before
booting the compressor next time, the program will immediately boot the compressor if the calculagraph reach 3 minutes ,if the calculagraph doesn't reach 3 minutes ,it will boot again when the calculagraph reaches 3 minutes. Thus you can ensure that the boot alternation is over 3 minutes after halt, so it can prevent to breaking the compressor as a result of frequent boot
5Compressor running timely when temperature sensor is error
When the temperature sensor is error, in order to avoid that the goods in the cold room destroy, you can make the compressor continues to run with a setting on/off rate. It is set by F22 and F23, for example, F22=20, F23=50, that when the temperature sensor is error, the cycle is 50 minutes, and the compressor stops for 40 minutes and runs for 10 minutes.
6Auto defrosting principle
The controller has 2 defrost start modes which can be selected (F35):
OFF: Defrost is off.
1: Time alternation: the controller will start defrost according to the setting alternation time which can be set in "Defrost alternation time (F31)", the controller starts defrost.
2: Accumulative compressor running time: if compressor accumulative running time reaches the time which set in "defrost alternation time (F31)", the controller starts defrost. The controller has 2 defrost end modes which can be selected (F36):
0: Time control: the defrost time can be set by F33, the controller will stop defrosting when it reaches the defrost time.
1: Controlled by both time and temperature: the controller will check the defrost effect through evaporator sensor after starting defrost, if the sensor temperature reaches the "Defrost end temperature(F32)", the controller will turn off defrosting, if the defrost time is longer than "defrost end time (F33)", the defrosting will be turned off forcibly.
The controller has 2 defrost heat modes (F37): 0: Electric heat: the compressor stops and the defrost output is turned on (the defrost output controls the electric heater).
1: Hot gas: the compressor and defrost output is turned on (the defrost output controls the valve).
7Dripping
A dripping time can be set (F34). For example, set the dripping water with 5 minutes, after finishing 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.
8Fan controlling
Fan has 7 operation modes (F41):
OFF: fan is off, but it may start when defrosting (rest with F38)
1: follow the compressor state, fan starts lingeringly after compressor starts (F42), fan stops
lingeringly after compressor stops (F43).
2: follow the compressor state, fan starts ahead before compressor starts (F42), fan stops
lingeringly after compressor stops (F43).
3: fan is controlled by the evaporator temperature, start when low temperature, stop when
high temperature (F44, F45), the fan starts when the evaporator temperature is below F44 and stop
when the evaporator temperature is over F44F45.
4: fan is controlled by the evaporator temperature, start when high temperature, stop when
low temperature (F44, F45), the fan starts when the evaporator temperature is over F44 and stop
when the evaporator temperature is below F44F45.
5: fan is on when the compressor is on, and times to start and stop when the compressor is off,
the on/off time is set by F46 and F47, in other words, on for F46 minutes and off for F47 minutes.
6: fan always running, but it stops when external alarm occurs. In addition, it may stop when
defrosting (rest with F38).
In spite of which mode, fan state is only rested with F38 when defrosting.
In spite of which mode, fan stops when external alarm occurs.
9 External alarm
The controller can connect a switch value as external alarm source (Pin 4, 5), when 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 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.
10Probation time
A probation time can be set (F87), the controller can add up the running time after power is on, if the accumulative running time is over the probation time, the controller will stop and display the alarm code A99, if you want to eliminate the limit of probation time, set the F87 to "OFF", also you can use the F86 to clear the accumulative running time, and you can try to use it again. The parameter F85 can be used to examine the accumulative running time of the controller (hour).
11Password
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.
Notice
1Please read the guide carefully before using, and set the parameter accurately.
2Please place the temperature sensor at the place of air return of the air-cooler.
3The evaporator sensor must be fixed on the air return pipe of the evaporator, if you don't use the evaporator sensor, set the F59 to NO, or the controller will generate alarm.
4Please use the temperature sensor which is supplied by our company.
Audited Supplier 
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