Panasonic CU-3KE19NBU Control/conditions, Unit operation, Explanation, Sensor, DRY A operation

Frequency control

		(Hz)		(senconds)
				Outdoor air temperature is below 32 °F.	Outdoor air temperature is 32 °F or higher.
		(25) Hz		(120) seconds	(60) seconds
		(35) Hz		(60) seconds	(30) seconds
		(45) Hz		(60) seconds	(30) seconds
		(55) Hz		(180) seconds	(90) seconds
				Table 2
(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
	59 °F or higher, and is
	slightly too cold.		(1) The indoor fan changes between "Low"		The compressor operates on a 3-minutes ON,
			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 59 °F.		compressor stops, and the indoor fan operates at
		"LL" (very low) speed.

74