Samsung KFH28, KFH28PV20K-KLM Operating Instructions

3. Operating Instructions and Installation

3-1 Operating Instructions

3-1-1 Control System Chart

Operation			Main switch operation		Auto, Cool, Dry, Fan, Heat operation
			Remote control operation		Turbo, Mild, Auto, Cool, Dry, Fan, Heat, Timer operation

Operation selector mode		Auto mode

Cool mode

Dry mode

Fan mode

Heat mode

In this mode, operation mode(COOL, HEAT) is selected automatically by room temperature of initial operation

Chaos output step fan motor control (Cooling:NATURAL, Heating:AUTO)

Indoor temperature control according to the set temperature.

Decide the dry cycle by the difference in room temperature and set temperature.

Operation of the indoor fan motor only.

Indoor temperature control according to the set temperature

Fan speed selector mode			Manual 3-step		High, Medium, Low
			Natural		Automatic decision of High, Medium, and Low step by chaos operation.
			Auto		Automatic decision of High, Medium, and Low step by chaos operation.

Airflow selector mode			Right and left turn
			UP and Down Turn
Timer operation mode			ON time
			OFF time
Convenience function			Turbo opertion
			Mild operation
			Q.timer
Self-diagnosis function			“E1”
			“E2”
			“E5”
			“E6”

Only use by remote control.

Continuously operating compressor & powerful operating fan motor(30 minutes). In case of heating operation, prevention against cold wind function is given priority before turbo operation. (Cooling:TURBO, Heating:HIGH)

Set off after opertion for one hour in medium mode, and two hours in low mode.

Reserve function which is off after on time of 30 minutes, 1,2,3, and 5 hours.

Displayed at the time of indoor temperature sensor open or short.

Displayed when the panel shutter opening/closing is not sensed.

Displayed at the time of EVAP. Sensor open or short. (Heating mode)

Displayed at the time of COND. Sensor open or short. (Heating mode)

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Operating Instructions and Installation

	VFD display function			Selection of operation mode		Auto, Cool, Dry, Fan Heat Display
				Selection of fan speed		Auto, natural, high, medium, and low fan speed Display
				Current temperature		Temperature display
				Fan speed diagram		Turbo, high, medium, and low airflow Display
				Timer function		Timer Display
				Convenience function		Timer, turbo lamp, mild Dispaly
				Airflow function		Up/Down, Left/Right Display
				Others		CHECK Display, Operation Display, Defrost Display

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Operating Instructions and Installation

3-1-2 Main Controller Function

3-1-2(a) Auto Operation

1. In this mode, operation mode(COOL, HEAT) is selected automatically by the room temperature of initial operation.

Room Temp.	Operation Type
Tr ³ 21˚C + DT	Cool operation (Set Temp.:24˚C + DT)
Tr < 21˚C + DT	Heat operation (Set Temp.:22˚C + DT)

DT=-1˚C, -2˚C, 0˚C, +1˚C, +2˚C

DT is controlled by setting temperature TEMP. SET Key of remote controller.

2. In Auto mode, the optimum fan speed is selected automatically and cannot be changed. · Set the "Auto" for heating.

· Set the "NATURAL" for cooling.

3-1-2(b) Cool Operation

1.The compressor is automatically turned on/off by the difference between the current temperature and desired temperature.

2.By selecting the fan speed , the operation of "low", "medium", "high", "natural", "auto" mode is selected.

3.The compressor is turned on/off by the change of the current temperature.

•The compressor is turned off when the current temperature is equal to the desired temperature.

•The compressor is turned on when the current temperature is +1˚C of the desired temperature.

4.Desired temperature setting range : 18˚C ~ 30˚C it can be changed by the unit of 1˚C.

5.Three minutes delay operation of the compressor.

ON						• Three minutes delay setting condition
OFF				1			After power reset
							On again after compressor off
	2

Three minutes delay

3-1-2(c) Heat Operation

1.The compressor is automatically turned on/off by the difference between the current temperature and desired temperature.

2.By selecting the fan speed , the operation of "low", "medium", "high", "auto" mode is selected.

3.The compressor is turned on/off by the change of the current temperature.

•The compressor is turned off when the current temperature is +1˚C of the desired temperature.

•The compressor is turned on when the current temperature is -1˚C of the desired temperature.

4.Desired temperature setting range : 16˚C ~ 30˚C it can be changed by the unit of 1˚C.

5.Delay operation of the compressor.

•Delay setting condition

ON							1		After power reset or shut down
OFF									compressor by control the desired
									temperature:3minutes.
									After deice:40sec.
			40sec-3minutes.			2
						3			After shut down compressor or 4-way
									valve:1/2minutes

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Operating Instructions and Installation

3-1-2(d) Turbo Operation

Indoor fan speed

Compressor control

set fan speed	turbo fan speed(high speed)
	set fan speed
(note)	opertion mode of (note)area
	Time,(t)

start of turbo	end of turbo
operation	operation

Operating condition

1.The turbo operation is available only in auto, cool, mild and heat mode.

2.The turbo operation is performed for 30 minutes when the turbo button is pressed. (including three minutes delay time)

3.Control of the indoor fan motor and compressor during turbo operation •Indoor fan motor = Heating High

Cooling Turbo(fan speed one step higher than “high”) •Compressor : continued on regardless of room temperature.

4.After an elapse of 30 minutes from the start of turbo operaiton, the turbo operation is ended, and the unit returns to the previous mode.

5.When you press the turbo key again during the turbo operation, the turbo operation mode is canceled, and the unit returns to the previous mode.

3-1-2(e) Fan Speed Auto

1. Cooling operation

	Desired temperature +5
	Desired temperature +4	Desired temperature +4˚C
	High speed area
	Desired temperature +3
	Medium speed area
	Desired temperature +2	Desired temperature +2˚C
	Medium speed area
	Desired temperature +1
	Low speed area	• The indoor fan motor speed is
	Low speed area
		automatically controlled
	Desired temperature +0
		according to the difference
		between the indoor temperature
	2. Heating operation	and the desired temperature.

Desired temperature +1˚C

Desired temperature +0˚C

Desired temperature -1˚C

Desired temperature -2˚C

Low speed area
Medium speed area	Desired temperature -1˚C
High speed area	Desired temperature -3˚C

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Operating Instructions and Installation

3-1-2(f)

Dry Operation

Room temperature[˚C]

Ts+4

A - MODE

A - MODE

B - MODE

Ts+3

Ts+2

B - MODE

C - MODE

Ts+1

C - MODE

Temperature down

Temperature up

Ts=desired temperature

1. On/off time by dry operation mode

Compressor

Operating mode

A - MODE

B - MODE

C - MODE

ON time

6 min.

5 min

3 min.

OFF time

4 min

5 min.

6 min.

•The indoor fan motor operation is fixed at a Low Speed

2.The dry operation mode is determined depending upon the difference between the indoor temperature (Ta) and desired temperature (Ts).

3.The unit is operated with the compressor on, and an indoor fan motor at a Low Speed for an initial six minutes (including a three-minute delay) after setting up the dry operation mode.

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Operating Instructions and Installation

3-1-3 Key Types and Functions

3-1-3(a) Panel Key Types and Functions

KEY NAME	KEY OPERATING FUNCTION	KEY TYPE
	Start and end of operation	TACT
ON/OFF	- ON one time = operation start, ON again = operation end
	- No continued operation
	Change of the operation mode	TACT
Mode selection	-Each time the button is pressed (ON), the mode is changed in the following order ;
	"COOL → DRY → FAN → HEAT → AUTO → COOL" (standard = AUTO)
	-No continued operation
	Setting of the indoor fan motor speed.	TACT
Fan speed	-Eacn time the button is pressed (ON), the mode is changed in the following order;
selection	COOL:"LOW → MEDIUM → HIGH → NATURAL → AUTO → LOW" (standard = AUTO)
	HEAT:"LOW → MEDIUM → HIGH → AUTO → LOW" (standard = AUTO)
	Increase the desired temperature display.	JOG SHUTTLE
Temperature	-When turning the jog dial clock-wise, it displays the desired temperature and	DIAL
	holding the jog dial continuously, the desired temperature is increased by the unit of 1˚C
setting (up)
	(COOL:18˚C → 30˚C, HEAT:16˚C → 30˚C)
	-One short, and continued operation.
	Decrease the desired temperature display.	JOG SHUTTLE
Temperature	-When turning the jog dial counter clock-wise, it displays the desired temperature and	DIAL
setting	holding the jog dial continuously, the desired temperature is decreased by the unit of 1˚C
(down)	(COOL:30°C → 18°C, HEAT:30°C → 16°C)
	-One short, and continued operation.

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