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FR · ERC 21X user manual · DKRCC.ES.RL0.H3.02/520H9656 · ©Danfoss
Menu code Parameter description
d04
Maximum defrost time
This parameter defines the defrost time when it is time based defrost. In case of temperature based defrost this
is treated as safety time to stop the defrost if it is not terminated based on the temperature.
d05
Defrost delay at power up or DI signal
This parameter decides the time offset when the defrost is triggered by digital inputs or during power up.
This function is only relevant if you have several refrigeration appliances or groups where you want the defrost
to be staggered in relation to one another.
d06
Drip-OFF time
This parameter defines the time delay to start the compressor after defrost heater being switched OFF.
This delay is generally provided to ensure all water droplets on the evaporator drips off before starting the
refrigeration cycle.
d07
Fan delay after defrost
Defines how long the delay is between the start of the compressor and the fan after defrost cycle.
d08
Fan start temperature after defrost
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 “d07” occurs before the temperature set in “d08”, the fan will start in line with “d07”.
If the temperature set in “d08” occurs first, then the fan will start in line with “d08”.
d09
Fan during defrost
This parameter is to define whether fan is to operate during defrost or not.
d10
Defrost stop sensor
This parameter is to define which sensor has to be used to exit/terminate the defrost.
non=none, defrost is based on time
Air=Sair sensor
dEF=S5 (defrost) sensor
d18
Compressor accumulated runtime to start defrost
When the accumulated compressor runtime is equal to the value set in this Parameter, defrost will be triggered.
If the compressor runtime is less than the set value during the define defrost interval “d03”, defrost will be
triggered based on the defrost interval “d03”. This feature is disabled when this parameter is set to zero.
d19
Defrost on demand
The controller will constantly monitor the “S5” temperature to estimate the ice buildup.
In between two defrosts, if the “S5” temperature become lower than the value defined here controller will
initiate the defrost on demand.
This feature is disabled when this parameter is set to 20. This function can only be used in 1:1 systems.
d30
Defrost delay after pull down
This parameter defines the time delay to start the defrost after pull down cycle.
This has to ensure defrost doesn’t happen immediately after pull down cycle.
F--
Fan control
F01
Fan at compressor cut-out
This parameter define the fan operation during compressor OFF cycle.
FAo=fan always ON
FFC=fan follow compressor
FPL=fan Pulsating
F04
Fan stop evaporating temperature
This parameter defines the maximum evaporator temperature at which the Fan must switch OFF.
If the defrost sensor registers a higher temperature than the one set here, the fans will be stopped to avoid the
warm air circulation in the cabinet.
F07
Fan ON cycle
This parameter is applicable only when the Fan at Compressor cut out “F01” is set to Fan Pulsating mode.
The Fan pulsating ON time will be as per the time set in this parameter.
F08
Fan OFF cycle
This parameter is applicable only when the Fan at Compressor cut out “F01” is set to Fan Pulsating mode.
The Fan pulsating OFF time will be as per the time set in this parameter.
c--
Compressor
C01
Compressor minimum ON time
This parameter determines the minimum number of minutes the compressor must run before a cut-out can
take effect based on temperature. This is to avoid sudden switching ON and OFF of the compressor.
C02
Compressor minimum OFF time
This parameter determines the minimum number of minutes the compressor must switched OFF before a
cut-in can take effect based on temperature. This is to avoid sudden switching OFF and ON of the compressor.
