Temperature display, temperature controlling,
compressor start delay protection, 2 defrost modes (electric heat, hot gas),
Main Function
Temperature display, temperature controlling, compressor start delay protection, 2 defrost modes (electric heat, hot gas), 2 defrost start mode (time alternation, accumulative compressor running time), 2 defrost end mode (timing, controlled by both temperature and time), dripping, manual defrost, sensor error alarm, one external alarm input, password, probation time.
Technique Index
1,Temperature display range: -50~150°C(The resolution is 0.1°C)
2,Power supply: AC 220V±10% or AC 380V±10% 50Hz (Refer to the wiring diagram)
3,Operating environment: temperature -20°C~50°C, humidity≤85%
4,Relay contact capability: 8A/250VAC (pure resistive load)
5,Temperature sensor: NTC R25=5kΩ, B (25/50) =3470K
Operating Guide
1, Meaning of the index lights on the panel
Index light | Name | Light | Flash |
| Upper Temp | In the state of setting | - |
| Bottom Temp | In the state of setting | - |
| Refrigeration | Refrigerating | Ready to refrigerate, in the state of compressor start delay protection |
| Defrost | Defrosting | Dripping or the state of compressor start delay protection |
2,Meaning of the LED display
The LED usually shows temperature, if it shows “SHr”, it means the temperature sensor is short, and “OPE” means the temperature sensor is open. The temperature and the alarm code (Axx) will show alternately when in the alarm state. The code is showing below:
Code | Meaning | Explanation |
A11 | External alarm | Alarm from external alarm signal, refer to the internal parameter code “F50” |
A21 | Temperature sensor error | Open or short(showing “OPE” or “SHr”) |
A22 | Evaporator sensor error | Open or short(showing “OPE” or “SHr” when press the key “6”). If you don’t need to use the evaporator sensor, you can use the F59 to close the alarm. |
A99 | Over probation time | If you have set the probation time F87, the alarm occurs when the accumulative running time is over probation time, and the controller can not work. |
3,The temperature of the evaporator sensor display
When displaying current temperature, press “6” key, the controller will display evaporator temperature. Loose “6” key, then return to current temperature. Notice that if you press the key and hold it for 5 seconds, the controller will enter or exit the defrosting state forcibly.
4,Set temperature
When displaying current temperature, press the key “5” “6” at the same time, then enter the state of upper temperature setting, the LED displays the upper temperature, then using “5” key or “6” key can change the parameter(the key “5” adds 0.1°C, the key “6” minuses 0.1°C, press and hold it over 0.5 seconds can add or minus rapidly). After setting, press the key “5” “6” at the same time, then enter the state of bottom temperature setting, using the same way set the bottom temperature, then exit the state of parameter setting.
