Low Noise Mode - Fujitsu Airstage V-II Service Manual

2-3-3

Low noise mode

When the low noise mode setting ON from PUSH SW or EXTERNAL INPUT, the outdoor unit operates in
the low noise mode as follows.
«
Settings and corresponding operations
Capacity priority setting
( PUSH SW )
OFF
ON
«
Low noise mode and operation contents
LOW NOISE MODE
LOW NOISE MODE
The constant speed compressor is stopped in the LOW NOISE MODE
The operating noise is reduced by limiting the rotational speed of the inverter compressor and fan motor
LOW NOISE MODE
LOW NOISE MODE
* Automatic switching
Operation in low noise mode
Low
capacity
Capacity does not become low
even when switched to low noise
mode
Normal operation
* Automatic switching
Operation in low noise mode
Low
capacity
Capacity does not become low
even when switched to low noise
mode
Operation in low noise mode
Low
capacity
Capacity does not become low
even when switched to low noise
mode
Normal operation
»
Low noise level setting
( PUSH SW )
LEVEL 1
LEVEL 2
LEVEL 1
LEVEL 2
»
Fan upper limit speed
COOL
Upper limit compressor capacity
Fan upper limit speed
HEAT
Upper limit compressor capacity
Fan upper limit speed
COOL
Upper limit compressor capacity
Fan upper limit speed
HEAT
Upper limit compressor capacity
The operating sound lowers from about 3 to 5 dB more than the rated value
The operating sound lowers from about 3 to 5 dB more than the LOW NOISE MODE
Not switched for 30 minutes
after being once switched.
Not switched for 30 minutes
after being once switched.
Operation mode
LOW NOISE MODE
LOW NOISE MODE
* Automatic switching
* Automatic switching
8HP 10HP
600rpm 600rpm
INV 45rps INV 53rps
600rpm 600rpm
INV 46rps INV 47rps
500rpm 500rpm
INV 45rps INV 50rps
500rpm 500rpm
INV 45rps INV 45rps
* Low capacity
Compressor capacity is low
or
High-pressure is high (high-pressure saturation
or
Low-pressure is low (low-pressure saturation
* Low capacity
Compressor capacity is low
or
High-pressure is high (high-pressure saturation
or
Low-pressure is low (low-pressure saturation
02-08
12HP 14HP
600rpm 600rpm
INV 60rps INV 72rps
600rpm
600rpm
INV 61rps INV 100rps
500rpm 500rpm
INV 60rps
INV 62rps
500rpm 500rpm
INV 55rps INV 62rps
and
58°C) at cooling
0°C) at heating
58°C) at cooling
0°C) at heating
16HP
600rpm
INV 72rps
600rpm
INV 100rps
500rpm
INV 62rps
500rpm
INV 62rps