Drip- o time
This parameter denes 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 o before starting the refrigeration cycle.
Fan delay after defrost
Denes how long the delay is between the start of the compressor and the fan after defrost cycle. This would help to avoid
hot air circulation in the cabinet imedietely after defrost.
Fan start temperature after defrost
This only applies if an evaporator temperature sensor is tted. 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 rst, then the fan will start in line with d08.
Fan during defrost
This parameter is to dene whether fan is to operate during defrost or not.
Defrost Stop Sensor
This parameter is to dene 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
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 accu-
mulated compressor runtime is less than the set value during the dened defrost interval (d03), defrost will be triggered
based on the defrost interval (d03). This feature is disabled when this parameter is set to zero.
Defrost on demand
The controller will record S5 temperature during each defrost interval when the evaporator is clean and continue to monitor
S5 temperature. Controller triggers defrost if the S5 temperature becomes less than recorded temperature by this value it 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.
Defrost delay after pull down
This parameter denes the time delay to start the defrost after pull down cycle. This has to ensure defrost doesnot happen
immedietely after pull down cycle.
Fan
Table 11: Fan
Fan control during compressor
o cycle
This parameter dene the fan operation during compressor o cycle.
FAo=Fan always ON
FFC=Fan follow compressor (Fan is switched o during compressor o cycle)
FPL= Fan Cycling
Fan stop evaporating temperature
This parameter denes the maximum evaporator temperature at which the Fan must switch OFF. If the defrost sensor regis-
ters a higher temperature than the one set here, the fans will be stopped to avoid the warm air circulation in the cabinet.
Fan On cycle
This parameter is applicable only when the Fan at Compressor cut out (F01) is set to Fan cycling mode. The Fan ON time will
be as per the time set in this parameter.
Fan OFF cycle
This parameter is applicable only when the Fan at Compressor cut out (F01) is set to Fan cycling mode. The Fan OFF time will
be as per the time set in this parameter.
Compressor
Table 12: Compressor
Compressor minimum ON time
This parameter determines the minimum number of minutes the compressor must run before a cut-out can take eect based
on temperature. This is to avoid sudden switching ON and OFF of the compressor. When used for Heating application, sug-
gest to set this value 0 to avoid any overheating.
Compressor minimum OFF time
This parameter determines the minimum number of minutes the compressor must switched OFF before a cut-in can take
eect based on temperature. This is to avoid sudden switching OFF and ON of the compressor.
Compressor OFF delay at door open
This parameter sets the delay to stop the compressor when the door is opened. If set to 900, the function is disabled.
Zero crossing selection
This feature will increase the relay life time, reduce the contact welding and switching noise by switching ON at Zero crossing.
Disable zero crossing when external relay is used.
Electronic refrigeration control, type ERC 21X
© Danfoss | Climate Solutions | 2023.01 BC194286421698en-000901 | 20
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