Non-Operating Idu Subcool; Set Idu Superheat For Fan - LG MULTI V 5 Manual Book

6.8 Non-operating IDU Subcool

It is function to reduce refrigerant noise that might be heard when non-operating IDU EEV is opened to
recover liquid accumulated inside IDU.
■ Setting the function
Function
Non-operating IDU Subcool Id 11
■ Option Selection
seg1, seg2
0
1
1 ~ 64

7
• Set EACH IDU : Select "Idu" → "Id11" → EACH → Select Indoor Unit No. → Set Value
• Set All IDU : Select "Idu" → "Id11" → ALL → Set Value
■ Detailed information
• This function is used with heat pump and heat recovery.
·Ask an authorized technician to setting a function.
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_TROUBLE SHOOTING GUIDE BOOK
Option
seg1, seg2 : IDU No.
seg3, seg4 : IDU Subcool
seg3, seg4
Default
Add 1℃ of IDU subcool

Add 7℃ of IDU subcool

6.9 Set IDU Superheat For Fan

It is a function to alleviate dew condensation on indoor unit panel by setting additional superheat according
to the indoor air volume when moisture is continuously generated or input into the room.
■ Setting the function
Function
Set IDU Superheat for Fan Id 12
■ Option Selection
seg1, seg2
Option
0
1
1 ~ 64
2
3
• Set EACH IDU : Select "Idu" → "Id12" → EACH → Select Indoor Unit No. → Set Value
• Set All IDU : Select "Idu" → "Id12" → ALL → Set Value
■ Detailed information
• This function is used with heat pump and heat recovery.
• In high humidity region, this option can be applied to prevent dew condensation
• Set step1 ~ step 3 to each or all IDU according to field condition (high humidity)
· This function reduces IDU capacity when fan speed reduces by raising superheat as fan speed lowers
·When setting this function, the temperature of the indoor unit may rise by about
1 ℃ ~ 4 ℃.
· When used with the target pressure adjusting function (Fn8), the temperature of the indoor unit con-
nected to the same outdoor unit may rise as well.
Option
seg1, seg2 : IDU No..
seg3, seg4 : IDU Superheat
seg3, seg4
Step 1 Step 2 Step 3
0 0 0
0 +1 +2
+1 +2 +3
+2 +3 +4
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