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_TROUBLE SHOOTING GUIDE BOOK __
6.5 Operating IDU Low Noise
This function is used to reduce refrigerant noise when the indoor unit starts to run
for heat recovery system.
■ Setting the function
Function Step Option
Operating IDU Low Noise Id 8
1
seg1, seg2 :
-
seg3, seg 4 : IDU No.
2
seg1 : 1, 2
seg2, seg3, seg4 :
-
3
seg,1, seg 2 :
-
seg 3,4 : EEV pulse
■ Option Selection
Step seg1 seg2 seg3, seg4
1
- -
1 ~ 64
2 1 (Cooling) / 2 (Heating)
-
-
3
Cooling
('1' in step 2)
- -
0, 13 ~ 17
(13 0 ~ 170pls)
Heating
('2' in step 2)
- -
0, 1 (140pls)
• Impossible to set all indoor unit at once ※Only possible to set each indoor unit
■ Detailed information
•
This function is used with heat recovery.
·Ask an authorized technician to setting a function.
·Maintain setting EEV pulse when the indoor unit starts to run for about 3min.
6.6 In Cooling IDU EEV Max. Pulse
It is the function to prevent excessive opening by setting EEV maximum pulse of indoor unit in cooling.
■ Setting the function
Function Option
In Cooling IDU EEV Max. Pulse Id 9
seg1, seg2 : IDU No.
seg3, seg4 : Max. EEV * 10pls
■ Option Selection
seg1, seg2 seg3, seg4
1 ~ 64 150 ~300 * 10pls
•
Maximum EEV pulse can be set in units of 10pls from 150 to 300pls. ('0': No setting)
•
Set EACH IDU : Select "Idu" → "Id9" → EACH → Select Indoor Unit No. → Set Value
•
Set All IDU : Select "Idu" → "Id9" → ALL → Set Value
■ Detailed information
•
This function is used with heat pump and heat recovery.
•
In cooling mode, the typical normal maximum pulse is 600. If superheat is too low,
you can restrict IDU max pulse to reduce noise in cooling caused by valve hunting.
•
Adjust operating range to stop hunting and stop noise
EEV valve normal range 0 ~ 1350 pulse
EEV in cooling typically open < 600 pulse, never greater than 1000 pulse
EEV in heating typically 8 ~ 1350 pulse
Maximum open can be adjusted down to 300 pulse
· Ask an authorized technician to setting a function.
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