En-28
Function settings
81 21
Various functions can be set. Set when necessary.
Perform settings after all indoor units have stopped operation.
Refer to Table A for the items that can be set.
A: List of Settings
Table1
No
Setting Item
7 seg
Factory
default
Content
First 2
digits
Last 2
digits
11
Cooling capacity
shift
Standard
1
1
0
0
• Please set this item when cooling ability is inadequate.
• If cooling ability is inadequate due to the setting of “High power
mode1”, please set it to “High power mode2”.
High power mode1
0
1
High power mode2
0
2
20
Switching between
batch stop or
emergency stop
Batch stop
2
0
0
0
This mode selects the pattern of the stop function to be operated
by the external input terminal (CN934).
• Batch stop: The stop of all indoor units connected to same
refrigerant system due to input signal coming from CN934.
• Emergency stop: The air conditioner returns to the original
operation if input from the CN934 is stopped. Furthermore, the
air conditioner does not accept the operation of the indoor unit
when emergency stop is actuated.
Emergency stop
0
1
21
Operation mode
selecting method
Priority given to the frst
command
2
1
0
0
Select the priority setting of the operation mode.
• Priority given to the first command: Priority is given to the
operation mode which is set first.
• Priority given to external input of outdoor unit: Priority is
given to the operation mode which is set by the external input
terminal (CN932).
Priority given to external
input of outdoor unit
0
1
28
Forbidden
Forbidden
2
8
0
0
Setting forbidden
0
1
29
Forbidden
Forbidden
2
9
0
0
Setting forbidden
0
1
30
Energy saving level
setting
Level 1 (stop)
3
0
0
0
The capacity limit can be selected when operating with the
“Energy Saving Peak Cut function.”
The operation selection can be done by external input
terminal(CN933).
The lower the level, the more the effect of energy saving, but the
cooling/heating performance decreases.
Level 2 (Limited at 50%)
0
1
Level 3 (Limited at 75%)
0
2
Level 4 (Limited at 100%)
0
3
34
Frost
Protection Fan
Mode
On
3
4
0
0
This mode is the function to prevent frosting to the propeller fan
of outdoor unit during heating operation.
Off
3
4
0
1
41
Low noise mode
setting
Off (Normal)
4
1
0
0
When “Low noise mode ON” is selected, the operating noise will
be suppressed.
Without external input terminal: It operates by selecting Low
noise mode ON.
With external input terminal: The operation selection can be
done by external input terminal(CN931) by selecting Low noise
mode OFF.
On (Low noise mode)
0
1
42
Low noise mode
operation level
setting
Level 1 (-3dB)
4
2
0
0
The noise level when operating in the low noise mode can be
set.
Cooling/heating performance decreases by lowering operation
noise level.
Level 2 (-6dB)
0
1
Level 3 (-9dB)
0
2
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