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Description of the parameters
D Defrost parameter
D01 Start defrost temperature
To start the defrost cycle; the condition must be valid for the time d03.
D02 End defrost temperature
Establishes the temperature above which the defrost cycle ends.
D03 Defrosting cycle
Represents delay between two successive defrost cycle. The rst time, when coil
temperature is lower than D01, there must be valid for the time d03 to start defrost.
D04 Max.defrosting duration
Represents the maximum duration of the defrost cycle (the defrost ends when the
maximum duration has been arrived, even if the defrost hasn't nished)
Attention: The situation of defrostation abnormal ending
1) If the unit is shut off during defrosting,the system will continue running until defrost has
nished.
2) If the HP switch has triggered during defrosting, then unit will shut down and show HP
malfunction. After recovering , the system retrurns to normal heating mode.
3) If the LP switch is triggered during defrosting, the unit will skip the LP malfunction, exit
defrosting and go back to normal heating mode, then the system will check the LP switch
after 5min.
4) If the Flow switch is triggered during defrosting, then unit will turn off and show Flow
Malfunction. After recovering this malfunction, the system continues defrosting.
5) If the exhaust temperature is too high during defrosting, then unit will shut down and
show this malfunction. After recovery, the system goes on defrosting.
6) If there is a high Temperature difference between inlet and outlet during
defrosting, then the unit will shut down and show this malfunction. After recovering, the
system goes on defrosting.
7) If the System shows Antifreezing protection during defrosting, the unit will shut down
and show this malfunction. After recovering, the system goes on defrosting.
E EEV parameter
E01 EEV mode
E01=0: EEV is running by manual operation;
E01=1: EEV is running by automatic operation;
E02 Target Super heat
E03 Initial position
If E01=0, represents expansion valve is xed in this position.
If E01=1, represents expansive valve initial position
E04 Minimum position
E05 Defrost position
Fix the EEV position during defrosting.
E06 Cooling position
Fix the EEV position in cooling mode.
F Fan parameter
Normally the Fan will start up 5s ahead of the Compressor and turn off 30s after it shuts
down. During defrosting the fan operation is according to defrosting control settings.
F01 Fan parameter
F01=0: in low speed fan mode;
F01=1: in high speed fan mode;
F01=2: the fan running mode depends on coil or ambient temperature (F02-F07);
Attention: The temperature probe is decided by F10.
F01=3: the fan runs at low speed depending on time (F08-F09), the fan runs at high speed
during other times;
F01=4: the fan running speed depends on F02 and F03.
F02 Coil or ambient temperature set point for high speed fan mode (Cooling)
This represents if the temperature above F02, the fan will on high speed (Cooling)
F03 Coil or ambient temperature set point for low speed fan mode (Cooling)
This represents if the temperature below which the fans remain on at low speed (Cooling)
F04 Coil or ambient temperature set point for the fan stop (Cooling)