Lync AEGIS Controller
8: APPENDIX D
L-OMM-013_A
• 4/20/2022Technical Support • (800) 433-5654 • Mon-Fri, 8 am - 5 pm EST
95
of
100
The dynamic evaporation temperature calculates a value that depends on the DF02 defrost
starting set point, the DF04 external air temperature, and on the DF03 and DF04 differentials,
according to the above graph.
Other parameters than can be set are:
•
DF07: maximum duration of the defrost cycle
•
DF29: minimum duration of the interval before the next defrost cycle
Modbus
address
Read
Write
Code
Meaning
Min
Max
Unit of
measurement/
correspondence
16665
RW
DF01
Type of defrost
0
1
0 = fixed
1 = dynamic
16666
RW
DF02
Evaporation temperature for starting
fixed defrost
-30
30
°C
16667
RW
DF03
Evaporation temperature differential
for starting dynamic defrost
0
30
°C
16668
RW
DF04
External air temperature for starting
dynamic defrost
-30
30
°C
16669
RW
DF05
External air temperature differential
for starting dynamic defrost
0
30
°C
16670
RW
DF06 Defrost start delay
0
1,200
sec
16671
RW
DF07 Maximum defrost duration
0
6,000
sec
16675
RW
DF29
Minimum time before the next
defrost cycle
0
28,800
sec
8.12.9. Forced Defrost
If the unit is outside the four defrost cycle phases, a defrost cycle can be forced regardless of
the evaporation temperature value.
Select the “Force defrost?” key on the Service menu with the UP and DOWN keys; press the
OK key to open the window asking to confirm selection for forcing the defrost cycle.
