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_TROUBLE SHOOTING GUIDE 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 Option
Non-operating IDU Subcool Id 11
seg1, seg2 : IDU No.
seg3, seg4 : IDU Subcool
■ Option Selection
seg1, seg2 seg3, seg4
1 ~ 64
0 Default
1 Add 1℃ of IDU subcool
7 Add 7℃ of IDU subcool
•
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.
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 Option
Set IDU Superheat for Fan Id 12
seg1, seg2 : IDU No..
seg3, seg4 : IDU Superheat
■ Option Selection
seg1, seg2
seg3, seg4
Option Step 1 Step 2 Step 3
1 ~ 64
0 0 0 0
1 0 +1 +2
2 +1 +2 +3
3 +2 +3 +4
•
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.
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