(1/f fluctuation fan)

 

Control/conditions

Unit operation

Explanation

 

 

 

 

SENSOR

The ON/OFF operation

The operation lamp illuminates.

The outdoor unit does not operate for 3 minutes

DRY

button on the remote

The indoor fan operates at the set fan speed.

even after the breaker is turned ON.

 

controller is pressed.

The outdoor unit stops.

 

 

 

 

 

 

 

 

 

 

The outdoor unit starts.

The frequency is increased at the rate of 0.5

 

 

 

Hz every 1 seconds.

 

 

(Compressor and the outdoor fan start.)

 

 

 

 

 

 

 

When the frequency reaches Hz,

This is in order to stabilize the return of oil to the

 

 

frequency increases are stopped for a period

compressor.

 

 

of seconds. (Refer to Table 2.)

 

 

 

 

 

 

 

The frequency then increases.

If the indoor and outdoor temperatures are high,

 

 

 

the current peak cut-off activates, stopping

 

 

 

any increases in frequency.

 

The room temperature

DRY operation starts

Operating frequency is stabilized in order to

 

reaches the desired

 

maintain a comfortable environment.

 

temperature, and there

DRY A operation

 

 

is no need for further

 

 

cooling.

The indoor fan changes between "Low"

Operates to effectively dehumidify the air while

 

 

and "LL" (very low) over a 6-minute cycle.

not excessively reducing the indoor

 

 

This is 1/f fluctuation fan operation.

temperature.

 

 

(Refer to Fig. 2.)

The indoor unit operates at 1/f fluctuation fan

 

 

 

operation, at a fan speed that does not cause

 

 

 

a chilly feeling.

 

The room temperature is

DRY B operation

 

 

15 °C or higher, and is

(1) The indoor fan changes between "Low"

The compressor operates on a 3-minutes ON,

 

slightly too cold.

 

 

and "LL" (very low) over a 6-minute cycle.

6-minutes OFF cycle, to prevent the room

 

 

This is 1/f fluctuation fan operation.

temperature from dropping too much.

 

 

(2) After appoximately 3 minutes, the

 

 

 

compressor turns OFF, the outdoor fan

 

 

 

turns OFF, and the indoor fan turns OFF.

 

 

 

(3) After approximately 6 minutes, the

 

 

 

conditions return to (1).

 

 

The room temperature is

Monitoring operation begins.

When monitoring operation begins, the

 

below 15 °C.

 

compressor stops, and the indoor fan operates at

 

 

 

"LL" (very low) speed.

1/f fluctuation fan

250

200

150

(Step)

100

50

0

6-minute cycle

Fig. 2

67

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Image 67
Sanyo SAP-CMRV1926EH, SAP-CMRV1426EH-F service manual Fluctuation fan, Dry
Page 66 Page 68

SAP-CMRV1926EH, SAP-CMRV1426EH-F specifications

The Sanyo SAP-CMRV1926EH and SAP-CMRV1426EH-F stand out in the realm of advanced climate control solutions. As part of Sanyo's renowned lineup of air conditioning systems, these models are designed to offer superior performance, energy efficiency, and enhanced comfort, catering to both residential and commercial use.

One of the main features of the SAP-CMRV1926EH is its robust cooling and heating capacity, making it an ideal choice for larger spaces or those requiring rapid temperature adjustments. The model boasts a cooling capacity of up to 19kW, while the SAP-CMRV1426EH-F offers a more compact 14kW, making it suitable for smaller environments without compromising performance. This flexibility allows users to select a model that best fits their specific needs.

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In summary, the Sanyo SAP-CMRV1926EH and SAP-CMRV1426EH-F models are distinguished by their impressive cooling and heating capacities, energy-efficient inverter technology, advanced air distribution, user-friendly controls, and quiet operation. These features make them an excellent choice for anyone seeking reliable and effective climate control solutions.
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