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18
FUNCTION DETAILS
Temperature Control
After turning on the unit and reaching the delay time (parameter E40), the compressor starts
operating when the cabinet temperature is higher than (set temperature + hysteresis) and will be off
when the cabinet temperature is lower than the set point temperature.
To protect the compressor, it cannot be re-started unless the time after the compressor stops is
longer than the delay time (Parameter E41).
Defrost Control
After running for a defrost interval set time (parameter F2), the unit will enter defrost and the
compressor stops. When the defrost duration time (parameter F1) ends, it will exit defrost status.
After a defrost period ends, there will be 2 minutes of dripping time before the unit can enter
refrigeration status.
➢ When defrost interval F2 is set to “00”, the automatic defrost by turning off compressor will be
cancelled.
➢ When setting parameter F4 is set to “0”, the temperature will be displayed normally during
defrost.
➢ When setting parameter F4 is set to “1”, the cabinet temperature is locked during defrost, and
the last value before defrost is displayed. When defrost ends, normal display will resume after
temperature display 20 minutes delay (or cabinet temperature lower than the set temperature).
The defrost LED flashes during delay.
➢ When setting parameter F4 is set to “2”, the set temperature will be displayed during defrost.
➢ When defrost ends, normal display will be resumed after 20 minutes delay (or cabinet
temperature lower than the set temperature). The defrost LED flashes during delay.
➢ When setting parameter F4 is set to “3”, dEF will be displayed during defrost. When defrost
ends, normal display will be resumed after 20 minutes delay display dEF (or cabinet temperature
lower than the set temperature). The defrost LED flashes during delay.
Alarm Control
After turning on for the first time, the unit will need to reach the C5 delay time setting, then the
high/low temperature alarm function can be triggered (C1, C2, C3). After passing C5 delay, when
the cabinet temperature is abnormal (for example higher than the temperature alarm C1 or lower
than temperature alarm C2) and duration more than alarm delay time C6, the unit will enter alarm
status, alarm start. When high temperature alarm alternate display H1 and cabinet air temperature,
the compressor starts to run. When low temperature alarm, will alternate display L0 and cabinet
temperature, the compressor stops. When cabinet temperature is higher than the (low temperature
alarm value C2 + alarm hysteresis C4), the low temperature alarm ends. When cabinet temperature
is lower than (high temperature alarm value C1 –alarm hysteresis C4), the high temperature alarm
ends.
When the product sensor temperature is greater than or equal to the product temperature high
temperature alarm value C3 and duration more than alarm delay time C6, unit enters alarm status,
and starts the alarm, alternate display H2 and cabinet temperature. When the product sensor
temperature is less than or equal to the (high temperature alarm value C3 – alarm hysteresis C4), it
will end the high temperature alarm.
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