dEF Defrost settings
"dFt"
Default no
Defrost Type
"no": defrost function is disabled.
"EL": electrical or time defrost.
"Hgd": hot gas defrost (contact Danfoss for details).
"nat": OFF-cycle defrost (natural defrost).
"Add"
Min. no
Max. yes
Default no
Adaptive defrost
"no": defrost controlled by time.
"yES": automatic defrost control activated.
"dtt"
Min. 0.0°C
Max. 25.0°C
Default 6.0°C
Terminate Temperature
This parameter defines at what temperature the defrost cycle will stop.
The temperature is given by the evaporator sensor or by the cabinet
temperature sensor if no evaporator sensor is used.
"drt"
Min. 0.0°C
Max. 200.0°C
Default 5.0°C
Defrost reset temperature
The defrost counter is saved and restored at power-up, but if the
temperature sensor, used for defrost, is higher than this value at
power-up, it is assumed that the evaporator is free of ice and the
defrost counter will be cleared.
"dii"
Min. 1 hour
Max. 96 hour
Default 6 hour
Defrost minimum Interval/dii
Defines the minimum time period between the start of two defrost cycles.
Once the minimum interval has expired, the defrost cycle will start at
the following cut-out or once the maximum interval "dAi" has been
reached.
"dAi"
Min. 1 hour
Max. 96 hour
Default 7 hour
Maximum Interval
Defines the maximum time period between the start of two defrost cycles.
"dit"
Min. 0 min
Max. 240 min
Default 5 min
Minimum Time
Defines the minimum duration of a defrost cycle. During this period, the
controller will not check the temperature. Once the minimum time has
expired, the temperature will be checked and if the terminate temperature
"dtt" has been reached, the defrost cycle will end. If dtt has not been
reached, defrost will continue until either dtt is reached or the
maximum time "dAt" reached, whichever occurs first.
"dAt"
Min. 0 min
Max. 480 min
Default 30 min
Maximum Time
Defines the maximum duration of a defrost cycle.
The controller will not allow a maximum time to be entered which is
less than the minimum time, or a minimum time which is more than the
maximum time.
"dot"
Min. 0 min
Max. 60 min
Default 0 min
Drip OFF Time
This parameter can be set to between 0 and 60 minutes and defines how long the delay is between
the heater being switched OFF and the compressor starting again.
"Fdd"
Min. 0 s
Max. 600 s
Default 0 s
Fan Delay after Defrost
Defines how long the delay is between the start of the compressor after
defrost
and the fan starting again.
"Ftd"
Min. -25.0°C
Max. 25.0°C
Default 25.0°C
Fan Start Temperature
This only applies if an evaporator temperature sensor is fitted.
This parameter determines at what evaporator temperature the fan will
start after a defrost cycle is complete.
If the time set in "Fdd" occurs before the temperature set in "Ftd", the fan
will start in line with "Fdd". If the temperature set in "Ftd" occurs first,
then the fan will start in line with "Ftd". It is therefore a case of whichever
parameter’s setting is reached first which determines when the fan starts.
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