Figure 8: Night mode
Fan cycling during compressor OFF cycle
During compressor OFF cycle controller will run the fan with dened duty cycle to maintain uniform temperature
and delay the need of compressor switching ON.
Figure 9: Fan cycle
Danfoss
80G8475
Thermostat cut in
Thermostat cut out
Fan
Compressor
Fan ON
cycle
Fan OFF
cycle
Cabinet air temp.
Defrost on Demand
This feature records the evaporator temperature when it is clean and constantly monitors the compares that at
every compressor cut outs. If the evaporator temperature goes below the recorded temperature by the value set in
parameter d30 before the congured defrost interval, it will trigger defrost immediately.
• This function can only be used in 1:1 systems.
• This function is disabled when the parameter “d30” is set to 20.
• Defrost on demand is triggered only if the time since the last defrost session has ended is greater than ¼ of the
defrost interval or 2 hours whichever is lesser.
• Defrost doesn’t start by this method during the following scenarios.
◦ Pull down mode
◦ Night mode
◦ Main switch in DI or main switch in Menu is in OFF position
◦ Manual control mode
◦ Evaporator temperature greater than 0 °C.
Electronic refrigeration control, type ERC 21X
© Danfoss | Climate Solutions | 2023.01 BC194286421698en-000901 | 10
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