LG GR-K20SVZ Technical Manual page 18

MICOM Function and Description of Circuit
7) Operation in Response to Ambient Temperature
The storage senses the ambient temperature and adjusts the temperature in the compartments
accordingly. This keeps the storage from being too cold or too warm because of seasonal variations
and maintains exact temperatures in the compartments.
Storage Temperature
of the left and right
Compartments
Season
8) Sequential Operation of Components
Components (Compressor, 3-way Valve, Left/ Right Ripening Heater and Condensation Heater) are
operated in a specific order to prevent damage, noise, and electrical overload caused by
simultaneous operation of all parts when the unit is started and after completing the self-test routine.
Operation Status
Temperature of Left or
Right sensor is >10°C
(at purchase, after
moving or after a long
period of no use.)
Temperature of Left
and Right sensor is
<10°C. (In Power
failure or Service)
When returning normal
status in test mode
❇ Operation order may slightly vary depending on temperature setting.
In general operation
Operation in response to ambient temperature
Spring
Operation Order
3sec
Instantly
CONDEN-
3WAY
POWER SATION
VALVE
ON
HEATER
OPEN
ON
Instantly 0.5sec
LEFT
CONDEN-
RIPENING
POWER
SATION
HEATER
ON
HEATER
ON
ON
3sec
3-WAY
VALVE
OPEN
BOTH
Instantly
CONDEN-
All
SATION
LOADS
HEATER
OFF
ON
3sec
3-WAY
VALVE
OPEN
BOTH
18
Summer Autumn
3min 10sec
3WAY
VALVE COMPR-
LEFT ESSOR
OPEN ON
0.5sec 5sec 0.5sec
LEFT
RIGHT
RIPENING
RIPENING RIPENING
HEATER
HEATER
OFF
ON
3min 10sec
3-WAY
VALVE
OPEN
LEFT
7min
PRESSOR
3min
3-WAY
VALVE
OPEN
LEFT
Winter
Remarks
Condensation
heater is set for
always ON,
but if the left and
right compartment
RIGHT
COM-
are simultaneously
PRESSOR
HEATER
turned off,
ON
OFF
condensation
heater is turned
off, too.
The 3-way valve is
opened to both
COM-
compartments for 3
minutes; then it is
ON
opened to either
the left or the right
compartment,
depending on the
temperature in the
compartments.