Sanyo CM1972 - Manual (Page 44)

Control/conditions
SENSOR
DRY
(1/f fluctuation fan)
The ON/OFF operation
button on the remote
controller is pressed.
The outdoor unit does not operate for 3 minutes
even after the breaker is turned ON.
This is in order to stabilize the return of oil to the
compressor.
The outdoor unit starts.
(Compressor and the outdoor fan start.)
When the frequency reaches Hz,
frequency increases are stopped for a period
of seconds. (Refer to Table 1.)
DRY B operation
If the indoor and outdoor temperatures are high,
the current peak cut-off activates, stopping
any increases in frequency.
The frequency then increases.
Unit operation Explanation
The operation lamp illuminates.
The indoor fan operates at the set fan speed.
The outdoor unit stops.
The room temperature
reaches the desired
temperature, and there
is no need for further
cooling.
Operating frequency is stabilized in order to
maintain a comfortable environment.
The room temperature is
59 °F or higher, and is
slightly too cold. The compressor operates on a 3-minutes ON,
6-minutes OFF cycle, to prevent the room
temperature from dropping too much.
DRY operation starts
DRY A operation
The room temperature is
below 59 °F.
When monitoring operation begins, the
compressor stops, and the indoor fan operates at
"LL" (very low) speed.
Monitoring operation begins.
The indoor fan changes between "Low"
and "LL" (very low) over a 6-minute cycle.
This is 1/f fluctuation fan operation.
(Refer to Fig. 1.)
The indoor fan changes between "Low"
and "LL" (very low) over a 6-minute cycle.
This is 1/f fluctuation fan operation.
After appoximately 3 minutes, the
compressor turns OFF, the outdoor fan
turns OFF, and the indoor fan turns OFF.
After approximately 6 minutes, the
conditions return to (1).
(1)
(2)
(3)
The frequency is increased at the rate of 0.5
Hz every 1 seconds.
Operates to effectively dehumidify the air while
not excessively reducing the indoor
temperature.
The indoor unit operates at 1/f fluctuation fan
operation, at a fan speed that does not cause
a chilly feeling.
1/f fluctuation fan
250
200
6-minute cycle
Fig. 1
150
100
(Step)
50
0
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