Appliance Shutdown; Defrost; Electrical Defrosting; Natural Defrost - Danfoss AK-CC55 Multi Coil User Manual

AK-CC55 Multi Coil
Table 4: Appliance cleaning function
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Appliance shutdown

The function closes the AKV valve and all outputs are switched off. The cooling appliance is stopped like the "Main
switch", but this happens without an "A45 standby alarm". The function can be enabled by a switch on the DI input
or via a setting through data communication.

Defrost

Depending on the application, you may choose between the following defrost methods:
Natural: Here the fans are kept operating during the defrost
Electric: The heating element is activated

Electrical defrosting

At electrical defrost, an electrical heater is placed in front of the evaporator and the fan will "pull" the hot air through
the evaporator during defrosting.
Figure 12: Electrical defrosting
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Natural defrost

At natural defrost, the ice is melted by running the fans and thereby circulating warm air through the evaporator.
Figure 13: Natural defrost
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Start of defrost

A defrost can be started in different ways:
Interval:
Defrost is started at fixed time intervals like e.g. every eighth hour. An interval must ALWAYS be set to a "higher"
value than the period set between two defrostings when a schedule or network signal is used.
Week schedule:
Here defrost can be started at fixed times of the day and night. However, max. 6 defrosts per day.
Contact:
Defrost is started with a contact signal on a digital input.
© Danfoss | Climate Solutions | 2022.08
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