Panasonic CU-4KE24NBU Temperature of releasing, Fig, Table, Control/conditions, Unit operation

	Outdoor heat
exchanger temperature (°F)
(- 4)	0	Outdoor air
		temperature (°F)
		(21.2)
		(19.4)
L2		(-11.2)
L1		(-13.0)

Temperature of releasing

Defrost operation time	Less than 2 minutes	2 minutes or more
Heat exchanger
temperature for	No releasing	57.2 °F or higher (*1)
releasing defrosting

*1 The temperature for releasing of defrosting is (68 °F) or higher when the outdoor air temperature is less than 32 °F.

	Fig. 1			Table 1
	Control/conditions		Unit operation		Explanation
COOL	The ON/OFF operation	The operation lamp illuminates.		The outdoor unit does not operate for 3 minutes
	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	The indoor temperature and the desired		Operating frequency is stabilized in order to
	has reached the	temperature are approximately equal.		maintain a comfortable environment.
	desired temperature.
	The thermostat turns			The outdoor unit stops. (It does not stop if the
	OFF.			thermostart for another indoor unit is ON.)
	The thermostat turns	After the thermostat turns ON again, the		After 3 minutes, the outdoor unit begins operating
	ON again.	outdoor unit will not operate for 3 minutes,		automatically.
		even if the room temperature increases		During these 3 minutes, a pressure balance is
		above the desired temperature.
				achieved, allowing the compressor to start
				more easily.
	Freeze prevention	When the temperature of the indoor heat		In order to protect against freezing, the
		exchanger drops to approximately 35.6 °F		compressor stops temporarily, until the
		or below, the compressor turns OFF, the		temperature of the indoor heat exchanger has
		outdoor fan turns OFF, and the indoor fan		risen.
		continues operating with no changes.
		Approximately 3 minutes later, if the
		temperature of the indoor heat exchanger
		is adove 46.4 °F, the system returns to its
		original conditions.
	Stop	All indicator lamps turn OFF. The indoor and
		outdoor units stop.
	Operation is restarted	Starts operating in the same operating mode		Within 4 hours after operation was stopped, it is
	within 4 hours (only when	(COOL) and with the same temperature		assumed that there has been no significant
	AUTO mode is selected	settings as before operation was stopped.		change in the indoor and outdoor temperatures,
	with the remote			and the previous conditions (COOL) are stored.
	controller).
	Operation starts after 4	New operating mode is determined based on
	hours or more have	the temperature conditions at the time the
	passed.	ON/OFF operation button is pressed.

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