LG MU5R40 - Forced Cooling and Wiring Error Check

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FUNCTION
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Wiring Error Check
You can check whether or not the wiring is correct.
Setting Procedure
1 Set the DIP Switch as follow after shutting the power source down.
2 Reset the power.
3 Check that the Red and Green LED of PCB are on during work.
(The indoor unit is operated by force.)
4 If the wiring is correct, the Green LED will light up.
If the wiring is wrong, display as below (Display only wrong connection.)
· Red LED : Piping Number
· Green LED : Wiring Number (Room)
Forced Cooling Operation
Adding the refrigerant in winter.
S
etting Procedure
1 Set the DIP Switch as follow after shutting the power source down.
2 Reset the power.
3 Check that the Red LED of PCB is on during work. (The indoor unit is operated by force.)
4 Add the specific amount of refrigerant.
CAUTION
!
- When the green LED of PCB is on, compressor is going to be off because of low pres-
sure.
- You should return the DIP Switch to operate normally after finishing the operation.
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