Panasonic CU-5E34NBE Manual Del Usuario página 24

7-3. Special Functions
7-3-1. Noise Reducing Control (Outdoor Unit)
The noise reducing control is the function used for silent operation of the air conditioner by means of
setting the dip switch on the outdoor unit P.C.Board to control the fan and compressor's motor speed.
When this function is used, the cooling or heating ability is slightly degraded. Therefore,
NOTE
when this function is to be enabled, make sure to receive the approval of the client.
<Operation Sound>
Specifications
Cooling
50 dB-A
Outdoor Air Temp. [°C]
33
Noise Reducing Operation is kept.
(Initial setting is the normal operation.)
28
Noise Reducing Operation
NOTE 1. In the test operation, high-power operation, defrost operation or low ambient cooling
operation (to be cancelled at the outside temperature of 14 °C or less, or 17 °C or
more), the noise reducing control is not available.
2. In the noise reducing operation, the fan's maximum motor speed is limited to 550rpm.
Also, the maximum frequency (Hz) is controlled in the cooling (42Hz) or heating
operation (40Hz).
<Switching Procedure to Noise Reducing Control>
(1) Remove the 3 screws fixing the right front cover and remove the right front cover. (Fig. 2)
(2) When the switch No. 1 of the dip switch (SW01) on the control P.C.Board is turned ON,
the noise reducing control is enabled. (Fig. 3)
Fig.2 View from front
Noise Reducing Control
(Fan's motor speed : 550rpm)
Heating Cooling
53 dB-A 47 dB-A
<In Cooling Operation>
Normal Operation
Normal Operation or
Control P.C.Board
Right front cover
Slide downward
Heating
47 dB-A
<In Heating Operation>
Outdoor Air Temp. [°C]
Noise Reducing Operation
15
Normal Operation or
Noise Reducing Operation is kept.
(Initial setting is the normal operation.)
10
Normal Operation
Power lamp
ERR0
ERR1
ERR2
ERR3
Fig.3 Control P.C.Board
24
ON
1 2
Dip switch (SW01)