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.

NOTE When this function is used, the cooling or heating ability is slightly degraded. Therefore, when this function is to be enabled, make sure to receive the approval of the client.

<Operation Sound>

 

 

Specifications

 

Noise Reducing Control

 

 

 

(Fan's motor speed : 500rpm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cooling

 

Heating

 

Cooling

 

 

Heating

 

 

 

 

 

 

 

 

 

 

 

 

55 dB-A

 

55 dB-A

 

47 dB-A

 

 

47 dB-A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

<In Cooling Operation>

 

 

 

<In Heating Operation>

Outdoor Air Temp. °F(°C)

 

Outdoor Air Temp. °F(°C)

 

 

 

 

Normal Operation

 

 

 

 

Noise Reducing Operation

91(33)

 

 

 

 

 

 

59(15)

 

 

 

 

Normal Operation or

 

 

Normal Operation or

 

 

 

 

 

 

 

 

 

 

 

Noise Reducing Operation is kept.

 

 

 

Noise Reducing Operation is kept.

82(28)

 

(Initial setting is the normal operation.)

 

50(10)

(Initial setting is the normal operation.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Noise Reducing Operation

Normal 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 57 °F(14 °C) or less, or 63 °F(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 500rpm. Also, the maximum frequency (Hz) is controlled in the cooling (30Hz) or heating operation (30Hz).

<Switching Procedure to Noise Reducing Control>

(1)Remove the 3 screws fixing the inspection panel and remove the inspection panel. (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)

Power lamp

Control P.C.Board

Inspection panel

ON

1 2

Dip switch (SW01)

Slide downward

SW01

Fig.3 Control P.C.Board

Fig.2 View from front

37

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Panasonic CU-KE30NKU Noise Reducing Control Outdoor Unit, Operation Sound, Switching Procedure to Noise Reducing Control

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