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 |
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| (Fan's motor speed : 500rpm) |
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Cooling |
| Heating |
| Cooling |
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| Heating |
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55 |
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| 47 |
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| 47 |
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| <In Cooling Operation> |
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| <In Heating Operation> | |||
Outdoor Air Temp. [°C] |
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| Outdoor Air Temp. [°C] | |||||||
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| Normal Operation |
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| Noise Reducing Operation | ||
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33 |
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| 15 |
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| Normal Operation or |
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| Normal Operation or | |||||
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| Noise Reducing Operation is kept. |
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| Noise Reducing Operation is kept. | ||||
28 |
| (Initial setting is the normal operation.) | 10 |
| (Initial setting is the normal operation.) | |||||
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| Noise Reducing Operation |
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| Normal Operation | |||||
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NOTE 1. In the test operation,
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)
Control P.C.Board Inspection panel
Slide downward
Power lamp
SW01
Fig.3 Control P.C.Board
ON
1 2
Dip switch (SW01)
Fig.2 View from front
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