LG LM-3060HL Service Manual ▷ View online
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10. Micom dehumidify
• In order to raise the efficiency of dehumidify, "Restarting temperature of compressor operation" set higher 1°C
than setting temperature.
• When room temperature is higher than "Restarting temperature of compressor operation", it will be operate by
fan speed setting.
• When room temperature reach "Stopping temperature of compressor operation", the fan and the compressor
will be stop. After 5mins passed, only fan start to operate in low mode for 2 min.
• When room temperature is between "Restarting temperature of kcompressor operation" amd "Stopping
temperature of compressor operation", operate micom dehumidify mode for 10 mins and fan operate low
speed.
speed.
• Fan will be stop after 10mins passed to operate imcom dehumidify or below or "Stopping temperature of com-
pressor operation" after 4 mins.
• When 5 mins passed after stopping compressor, fna start to low mode and 7 mins passed after stopping,
compressor start to operate micom dehumidify again. (When micom dehumidify operate, fan will operate at
low speed.)
low speed.)
• When room temperature is below of "Stopping temperature of compressor operation", fan will stop 5 mins and
operate 2 min in low mode.
• In micom dehumidify mode, control of fan speed is as following.
ROOM TEMP.
COMP ON
(SET TEMP. +1°C)
COMP. OFF
(SET TEMP. -1°C)
INDOOR FAN
COMPRESSOR
ON
OFF
ON
ON
OFF
ON
2MINS
5MINS
5MINS
5MINS
10MINS
10MINS
MAX 4MINS
10MINS
OPERATION
COOLING
COOLING
DELAY 3 MINS
OPERATION
COOLING
2 MINS
2MINS
MAX
OFF
FAN SPEED
SETTING
LOW
LOW
LOW
LOW
OFF
OFF
OFF
LOW
LOW
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11. Different Operation Mode Control
When all units (A-Unit, B-Unit, C-Unit) are operated simultaneously, if each unit is not operated in the same
mode of the unit operated at first, it is not operated.
mode of the unit operated at first, it is not operated.
If operating mode of a unit is different from mode of the unit operated at first, operating LED will be blinking 3
times, besides the indoor and outdoor fan and the compressor will be off.
times, besides the indoor and outdoor fan and the compressor will be off.
<Example>
After A-Unit operates in cooling mode at first, B and C-Units operate in heating mode.
¥L
A-Unit
• Cooling mode operation (
¤B
normal display)
¥M
B,C-Unit
• System error operation (
¤B
abnormal display)
After A, B-Unit opertes in heating mode at first, C-Units operate in cooling mode.
¥L
A,B-Unit
• Heating mode operation (
¤B
normal display)
¥M
C-Unit
• System error operation (
¤B
abnormal display)
¡
System error operation : The unit stops operation with blinking operation LED 3 times.
12. Communication control between INDOOR and OUTDOOR
The units are controlled by signal between indoor and outdoor, therefore the unit can be operated incorrectly by
any noise. In this case, you should reoperate the unit by remote controller.
any noise. In this case, you should reoperate the unit by remote controller.
Case 1
Case 2
or
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<OUTDOOR UNIT>
1. Solenoid Valve Control
Solenoid valve controls mass of liquid flow of each unit.
(1) Before starting condition
• All teh solenoid valves are off.
(2) In operating mode
¥L
Heating operating mode
• After solenoid valve of each unit operated is ON,
the solenoid valve of units not operated also in ON 30 seconds later.
• But the solenoid valve for by-pass is always OFF.
¥M
Cooling operating mode
• Operating single unit: The solenoid valve operated and the valve for by-pass is ON.
• Operating dual unit: The solenoid valve of each unit operated is ON.
• Operating triple unit: The solenoid valve of each unit operated is ON.
(3) Stopping condition
The solenoid valve is off 3 minutes later.
2. Outdoor Fan Control
• Outdoor fan is set as control of the compressor. That is, as compressor operated, outdoor fan is operated.
• In heatin goperating mode, if discharge pressure of the compressor has been above 24kg/cm
2
g outdoor fan is
off, but if the discharge pressure has been below 20kg/cm
2
g, the outdoor fan is on.
1. Do not operate "cooling" and "heating" operation at the same time.
It may cause troubles.
2. If you operate only one or two indoor units among the three units in heating mode.
1) You mau slightly feel heating sense from the remaining (non-operated) unit(s).
(This product is designed to operate the solenoid valves of outdoor unit and to pass the refrigerant to the
indoor units even you use only one indoor unit out of three units in heating operation)
indoor units even you use only one indoor unit out of three units in heating operation)
2) Fan operation of the remaining (non-operated) units is not to be made in case of the above condition.
CAUTION
• Cooling, Soft Dry, Fan, Heating
• Timer Mode
• Sleep Mode
• Deice control mode
• Hot-Start control mode
1. Test Mode
Test operation will be setted by pushing the tact switch (SW1) in teh MAIN P.C.B ASM. Each test operation by
pushing count of tact switch is as well as the following.
pushing count of tact switch is as well as the following.
• 1 time push: Ignore Communication control (
¤B
operate indoor unit only)
• 2 times push: Shorten the proceeding time (1 min
¡
1 sec)
• 3 times push: Shorten the prceeding time (1 hour
¡
1 sec)
• 4 times push: All LED ON
• 5 times push: Fan: LOW
• 6 times push: Fan: MED
• 7 times push: Fan: HIGH
• 8 times push: Reset
Note)
For normal operation after checking by test mode, you should press SW1 8 times for resetting or reconnect the
power cord.
power cord.
1. Protection of the evaporator coil from frosting
If the temperature of the indoor coil is below 0°C after 7 mins from starting the compressor, the compressor and
the outdoor fan is stopped, and then after 3 mins delay of the compressor and the temperature of the indoor coil
is over 7°C, the compressor and the outdoor fan is reoperated.
the outdoor fan is stopped, and then after 3 mins delay of the compressor and the temperature of the indoor coil
is over 7°C, the compressor and the outdoor fan is reoperated.
2. Thermistor Cut Off or Short
Blinks on and off the operation mode LED 1 times.
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Display Function
Self-diagnosis Function
Operation Indicator
Timer Indicator
Sleep Timer Indicator
Deice Indicator
: Heating model only
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