Volta Air Technology Owner’s Manual
Van Refrigeration & Freezer Unit
16
CONFIDENTIAL
Defrost operation
Defrost mode starts only if the defrost temperature sensor (evaporator core temperature) is
lower than the limit temperature set at F01. Defrost stops if the defrost temperature reaches the
termination temperature set at F02, the operation time is over, or the defrost button held for 3
seconds. There is 30 seconds delay to drain the water before going back to cooling mode.
Automatic defrost is set up on the controller by default and setting parameters can be changed
regarding the application on function F01 to F04.
Manual defrost is available by pressing the defrost button once in cooling mode. Defrost
operation can be stopped by holding the defrost button for 3 seconds.
Heating mode
Heating is applicable if box temperature is lower than the set point temperature. Heating cycle
is very similar to defrost cycle, but evaporator fans continue running to circulate the heated air
throughout the box.
To activate the heating option, controller setting has to be changed at function F08 and then
reset the controller by turning it off and on. User needs to switch between the cool and heat
mode manually and reset the controller after to activate them.
Controller/System Faults
If set temperature is below 0°C system will
continue, if it is above 0°C system will stop
The defrost termination temperature
function is disabled. The defrost function
does not affect the system operation
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