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Optional Function
4.3.5 SLo Defrost Setting
(1) Press “PSW3” and select the setting condition “0” to “5” at the SLo defrost setting “ “.
(2) This function “ “=0 can stop indoor fan during the defrost operation and at the start of the heating operation.
(3) However, this function “ “ = 1 can operate the indoor fan at low speed during the defrosting operation and at the start
of the heating operation.
(4) This function “ “ = 5 can operate the indoor fan at low speed when 3-pipe heat recovery combined units in alternate
defrosting operation, and discharge pressure ≥290psi (2.0MPa). This function “ “ = 5 stops the indoor fan when 3-pipe
heat recovery combined units in alternate defrosting operation, and discharge pressure≤276psi (1.9MPa).
Setting Condition Indoor Fan Operation
0 Not Available (Default Setting)
1 Indoor fan SLo when heating operation is activated/during defrost operation
2 -
3 -
4 -
5
1. Indoor fan at SLo when 3-pipe heat recovery combined units in alternate
defrosting operation, and discharge pressure≥ 290psi (2.0MPa).
2. Indoor fan stops when 3-pipe heat recovery combined units in alternate
defrosting operation, and discharge pressure ≤276psi (1.9MPa).
4.3.6 Capacity-Focused Mode Setting
If the unit capacity seems insucient during the normal operation, press “PSW3” and select the setting condition “0” to “3”
Capacity-Focused Mode Setting “ ”. By setting this function, the target frequency, current limit of the compressor, the
fan-speed maximum limit value and discharge pressure limit value are set higher.
NOTE:
Do not use the setting condition “2” and “3” unless the power supply line is of sucient ampacity, because the target
frequency and current limit of the compressor during the operation are set higher.
Setting Condition Compressor Frequency and Current Operation
0 Note Available (Default Setting)
1 Frequency maximum limit value is set higher.
2 Frequency maximum limit value and current limit value are set higher.
3
Frequency maximum limit value, current limit value and the fan-speed maximum limit value
are set higher.
4 Maximum discharge pressure limit value is set higher.
4.3.7 Low Noise Setting
Press “PSW3” and select the setting condition “0” to “9” at the Low Noise Setting “ ” to reduce the compressor frequency
and the outdoor fan motor rotation frequency.
The operating noise (targeted value) can be set by selecting the setting condition shown below.
NOTE:
1. By setting this function, the compressor frequency and the outdoor fan motor rotation frequency are forcibly reduced and
so the outdoor unit capacity decreases and the unit operation range is limited.
2. The operating noise values for a single unit are shown below. These are targeted values and so the actual values can
temporarily be higher depending on operation conditions. The operating noise values for combination units are higher
than the values below.
Setting Condition Compressor Frequency Limit Outdoor Fan Motor Step Limit
0 Not Changed Not Changed
1 Not Changed 20 Steps
2 Not Changed 18 Steps
3 Not Changed 16 Steps
4 Low Not Changed
5 Lower Not Changed
6 Lowest Not Changed
7 Low 20 Steps
8 Lower 18 Steps
9 Lowest 16 Steps
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