Heat Controller B-HMH24AS, B-HMC24AS, B-HMH18AS, B-HMC18AS, B-HMH12AS Service Manual

®

Wall Mounted

Mini-Split System

Air Conditioning/Heat Pump

Service Manual

B/A-HMC09AS

B/A-HMC12AS, B/A-HMH12AS

B/A-HMC18AS, B/A-HMH18AS

B/A-HMC24AS, B/A-HMH24AS

Before servicing the unit, read the “safety precautions” in this manual.

Only for authorized service personnel.

Contents

Functions......................................................................................................................................	3
Product Specifications ................................................................................................................	5
Dimensions...................................................................................................................................	7
Refrigeration Cycle Diagram.....................................................................................................	10
Wiring Diagram ..........................................................................................................................	12
Operation Details .......................................................................................................................	15
Display Function ........................................................................................................................	22
Self-diagnosis Function ............................................................................................................	22
Installation ..................................................................................................................................	23
Operation ....................................................................................................................................	38
Disassembly of the Parts(Indoor Unit).....................................................................................	40
Cycle Troubleshooting Guide ...................................................................................................	46
Electronic Control Device .........................................................................................................	56
Schematic Diagram....................................................................................................................	59
Exploded View and Replacement Parts List............................................................................	60

- 2 -

Functions

Indoor Unit

Operation ON/OFF by Remote controller

Sensing the Room Temperature

•Room temperature sensor (THERMISTOR)

Room temperature control

•Maintains the room temperature in accordance with the Setting Temp.

Starting Current Control

•Indoor fan is delayed for 5 seconds at the starting.

Time Delay Safety Control

•Restarting is inhibited for approx. 3 minutes.

Indoor Fan Speed Control

• High, Med, Low and Auto

Operation indication Lamps (LED)

--- Lights up in operation

--- Lights up in Sleep Mode

--- Lights up in Timer Mode

--- Lights up in Defrost Mode or Hot Start Mode (only Heating Model)

OUT --- Lights up during compressor running (only Cooling Model)

DOOR

Healthy Dehumidification Mode

• Intermittent operation of fan at low speed

Sleep Mode Auto Control

•The fan is switched to low(Cooling), med(Heating) speed.

•The unit will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

Auto Air Control by the unit electronic control

•The fan is switched to intermittent or irregular operation.

•The fan speed is automatically switched from high to low speed.

Chaos Swing

•The louver can be set at the desired position or swing up and down automatically.

Defrost control(Heating)

•Both the indoor and outdoor fan stops during defrosting.

•Hot start will be operated after defrosting ends.

Hot-start Control (Heating)

•The indoor fan stops until the indoor pipe temperature will be reached at 28°C(82°F).

- 3 -

Remote Controller

Operation ON/OFF

Operation Mode Selection

(Cooling (Heating model only) model only)

Cooling Operation Mode.(	)	Auto Operation Mode.(	)
Healthy Dehumidification Operation Mode.(		) Heating Operation Mode.(	)

Fan Speed Selection
(Low)	(Med)	(High)	(CHAOS)
Room, Temperature Display

: (High: 39°C(98°F) LOW : 12°C(54°F)

		Temperature Setting						Down to 18°C(64°F) Heating			Down to 16°C(60°F)
				Cooling
		TEMPERATURE LOW HIGH
								Up to 30°C(86°F)			Up to 30°C(86°F)
		JET COOL

Selecting ° C / ° F

° C / ° F

Setting the Time or Timer

Timer Selection

ONOFF

Timer Setting

SET

: OFF, ON, OFF ON

Timer Cancel

CANCEL

: Cancel Sleep Mode, Timer ON or Timer OFF

Sleep Operation

: 1, 2, 3, 4, 5, 6, 7, Off Timer

Chaos Swing

Fan Operation Mode

: Fan Operates without cooling or heating.

Horizontal Airflow Direction Control Button(Option)

Reset

- 4 -

Product Specifications(Cooling Only)

		Items		Unit	B/A-HMC09AS	B/A-HMC12AS	B/A-HMC18AS	B/A-HMC24AS
Power Supply				ø , V, Hz	1, 115V, 60	1, 115, 60	1, 230/208, 60	1, 230/208, 60
Cooling Capacity				BTU/h	9,000	12,000	18,000/17,800	23,000/22,600
Input				W	940	1,290	1,900/1,870	2,550/2,500
Running Current				A	8.5	11.7	8.5/9.0	11.5/12.0
COMP. Locked Rotor AMP.				A	46	58	47	67
E.E.R				BTU/hW	9.6	9.3	9.5/9.5	9.0/9.0
Air Circulation				m3/min(cfm)	7.1(250)	9.4(330)	13(460)	15(530)
Moisture Removal				l/h(pts/hr)	1.2(2.6)	1.4(3)	2.5(5.3)	3.1(6.6)
Noise Level		Indoor, High		dB(A)	38	41	44	49
(Sound		Med		dB(A)	36	39	41	45
Pressure, 1m)		Low		dB(A)	35	37	38	40
		Outdoor, Max		dB(A)	48	48	55	57
Features		Temperature Control			Thermistor	Thermistor	Thermistor	Thermistor
		Air Deflection			4-way	4-way	4-way	4-way
		Steps, Fan/Cool			3/3	3/3	3/3	3/3
		Airflow Direction Control(up&down)			Auto	Auto	Auto	Auto
		Airflow Direction Control(left&right)			Manual	Manual	Manual	Manual
		Remocon Type			Wireless LCD	Wireless LCD	Wireless LCD	Wireless LCD
		Setting Temperature Range, Cooling Mode			64~86°F	64~86°F	64~86°F	64~86°F
		Temperature Increment			2°F	2°F	2°F	2°F
		Auto Operation(electronic control)			Yes	Yes	Yes	Yes
		Self Diagnosis			Yes	Yes	Yes	Yes
		Timer			24hr, On/Off	24hr, On/Off	24hr, On/Off	24hr, On/Off
		Sleep Operation			Yes	Yes	Yes	Yes
		Healthy Dehumidification Mode			Yes	Yes	Yes	Yes
		Restart Delay		minutes	3	3	3	3
Refrigerant(R-22) Charge				g(oz)	630(22.2)	730(25.8)	1,250(44.1)	2,000(70.5)
Power cord				AWG #: P*mm2	14:3*2.5	14:3*2.5	14:3*2.5	14:3*2.5
Fuse or breaker Capacity				A	15A	20A	20A	25A
Connecting Cable				AWG #: P*mm2	16:4*0.75	18:4*0.75	18:4*0.75	18:4*0.75
Connecting Tube		Liquid Side		mm(in)	6.35(1/4)	6.35(1/4)	6.35(1/4)	9.52(3/8)
(ø . Socket Flare)
		Gas Side		mm(in)	12.7(1/2)	12.7(1/2)	15.88(5/8)	15.88(5/8)
		Length, std		m(ft)	7.62(25)	7.62(25)	7.62(25)	7.62(25)
Additional Drain Hose(Outer Dia.)				mm(in)	15.5(5/8)	15.5(5/8)	15.5(5/8)	15.5(5/8)
Dimensions		Indoor		mm	802*262*165	888*287*170	1,080*314*181	1,080*314*181
(WxHxD)				in	31.6*10.3*6.5	35.0*11.3*6.7	42.5*12.4*7.1	42.5*12.4*7.1
		Outdoor		mm	770*540*245	770*540*245	870*655*320	870*655*320
				in	30.3*21.3*9.6	30.3*21.3*9.6	34.3*25.8*12.6	34.3*25.8*12.6
Net Weight		Indoor		kg(lbs)	7(15.4)	9.5(20.9)	13(28.7)	13(28.7)
		Outdoor		kg(lbs)	32(70.5)	32(70.5)	61(134.5)	62(136.7)

* Design and Specifications subject to change without prior notice for product improvement.

- 5 -

Product Specifications(Cooling & Heating)

Items				Unit	B/A-HMH12AS	B/A-HMH18AS	B/A-HMH24AS
Power Supply				ø , V, Hz	1, 115, 60	1, 230/208, 60	1, 230/208, 60
Cooling Capacity				BTU/h	12,000	18,000/17,800	23,000/22,600
Heating Capacity				BTU/h	12,000	19,000/18,700	23,000/22,600
Input		Cooling		W	1,290	1,900/1,870	2,550/2,500
		Heating		W	1,290	1,900/1,870	2,550/2,500
Running Current		Cooling		A	11.7	8.5/9.0	11.5/12.0
		Heating		A	11.7	8.5/9.0	11.5/12.0
COMP. Locked		Cooling		A	58	42	67
Rotor AMP.		Heating		A	58	42	67
E.E.R				BTU/hW	9.3	9.5/9.5	9.0/9.0
C.O.P					2.75	2.9/2.9	2.6/2.6
Air Circulation				m3/min(cfm)	9.4(330)	13(460)	15(530)
Moisture Removal				l/h(pts/hr)	1.4(3)	2.5(5)	3.1(6.6)
Noise Level		Indoor, High		dB(A)	41	44	47
(Sound		Med		dB(A)	39	41	44
Pressure, 1m)		Low		dB(A)	37	38	40
		Outdoor, Max		dB(A)	48	55	58
Features		Temperature Control			Thermistor	Thermistor	Thermistor
		Air Deflection			4-way	4-way	4-way
		Steps, Fan/Cool/Heat			3/3/3	3/3/3	3/3/3
		Airflow Direction Control(up&down)			Auto	Auto	Auto
		Airflow Direction Control(left&right)			Manual	Manual	Manual
		Remocon Type			Wireless LCD	Wireless LCD	Wireless LCD
		Setting Temperature Range, Cooling Mode			64~86°F	64~86°F	64~86°F
		Heating Mode			60~86°F	60~86°F	60~86°F
		Temperature Increment			2°F	2°F	2°F
		Auto Operation(electronic control)			Yes	Yes	Yes
		Self Diagnosis			Yes	Yes	Yes
		Timer			24hr, On/Off	24hr, On/Off	24hr, On/Off
		Sleep Operation			Yes	Yes	Yes
		Healthy Dehumidification Mode			Yes	Yes	Yes
		Restart Delay		minutes	3	3	3
		Defrost Control			Yes	Yes	Yes
		Hot Start			Yes	Yes	Yes
Refrigerant(R-22) Charge				g(oz)	840(29.6)	1350(47.6)	1900(67.0)
Power cord				AWG #: P*mm2	14:3*2.5	14:3*2.5	14:3*2.5
Fuse or breaker Capacity				A	20A	20A	25A
Connecting Cable				AWG #: P*mm2	18:4*0.75	18:4*0.75	18:4*0.75
Connecting Tube		Liquid Side		mm(in)	6.35(1/4)	6.35(1/4)	9.52(3/8)
(ø . Socket Flare)		Gas Side		mm(in)	12.7(1/2)	15.88(5/8)	15.88(5/8)
		Length, std		m(ft)	7.62(25)	7.62(25)	7.62(25)
Additional Drain Hose(Outer Dia.)				mm(in)	15.5(5/8)	15.5(5/8)	15.5(5/8)
Dimensions		Indoor		mm	888*287*170	1080*314*181	108*314*181
(WxHxD)				in	35.0*11.3*6.7	42.5*12.4*7.1	42.5*12.4*7.1
		Outdoor		mm	770*540*245	870*655*320	870*655*320
				in	30.3*21.3*9.6	34.3*25.8*12.6	34.3*25.8*12.6
Net Weight		Indoor		kg(lbs)	9.5(20.9)	13(28.7)	13(28.7)
		Outdoor		kg(lbs)	33(72.8)	62(136.7)	63(138.9)

*Design and Specifications subject to change without prior notice for product improvement.

-6 -

Dimensions

(1) Indoor Unit

D

W

H

Installation plate

Tubing hole cover

Tubing hole cover

	MODEL	9K	12K	18K, 24K
DIM
W	mm(inch)	802(31.6")	888(35.0")	1,080(42.5")
H	mm(inch)	262(10.3")	287(11.3")	314(12.4")
D	mm(inch)	165(6.5")	170(6.7")	181(7.1")

- 7 -

(2) Outdoor Unit

1. 9K, 12K
	W	L2
L1	D
	L3

H

L4

Gas side (3-way valve)

L5

Liquid side (2-way valve)

		MODEL	9K, 12K
	DIM	unit
	W	mm(inch)	770(30.3)
	H	mm(inch)	540(21.3)
	D	mm(inch)	245(9.6)
	L1	mm(inch)	287(11.3)
	L2	mm(inch)	64(2.5)
	L3	mm(inch)	518(20.4)
	L4	mm(inch)	10(0.4)
	L5	mm(inch)	100(3.9)

- 8 -

2. 18K, 24K

W

D

L1

L2

L3

H
				L9	Gas side
				L10	3-way valve
					Liquid side
					3-way valve
L4	L6	L5	L7	L8

	MODEL	18K, 24K
DIM
W	mm(inch)	870(34.3)
H	mm(inch)	655(25.8)
D	mm(inch)	320(12.6)
L1	mm(inch)	370(14.6)
L2	mm(inch)	25(1.0)
L3	mm(inch)	630(24.8)
L4	mm(inch)	25(1.0)
L5	mm(inch)	546(21.5)
L6	mm(inch)	162(6.4)
L7	mm(inch)	162(6.4)
L8	mm(inch)	54(2.1)
L9	mm(inch)	74.5(2.9)
L10	mm(inch)	79(3.1)

- 9 -

Refrigeration Cycle Diagram

• Cooling Only Models

INDOOR UNIT

OUTDOOR UNIT

	LIQUID SIDE	CAPILLARY TUBE
	HEAT
	EXCHANGER	HEAT
	(EVAPORATOR)
		EXCHANGER
		(CONDENSER)
	GAS SIDE	COMPRESSOR

MODEL	Pipe size(Diameter:ø)		Piping length		Elevation
	Gas	Liquid	Rated	Max	Rated		Max
9K, 12K	1/2"	1/4"	7.62m(25ft)	15m(50ft)	5m(16ft)		8m(26ft)
(Cooling Only)
18K	5/8"	1/4"	7.62m(25ft)	15m(50ft)	5m(16ft)		8m(26ft)
(Cooling Only)
24K	5/8"	3/8"	7.62m(25ft)	15m(50ft)	5m(16ft)		8m(26ft)
(Cooling Only)

For installation over rated, *a proper quantity of refrigerant should be added for each 3.3ft(1m).

a proper quantity of refrigerant

9k, 12k	0.7 Oz (20g)
18k, 24k	1.4 Oz (40g)

Ex) 18K: When installed at a distance of 50ft(15m), 10.6Oz(295g) of refrigerant should be added. (50-25) 1.4 3.3 = 10.6 Oz (295g) of refrigerant to add

Unit precharged for 25ft. line sets.

- 10 -

• Cooling & Heating Models

INDOOR UNIT

OUTDOOR UNIT

LIQUID SIDE	CAPILLARY TUBE	CHECK VALVE
HEAT	HEAT
EXCHANGER
(EVAPORATOR)	EXCHANGER
	(CONDENSER)
GAS SIDE
		REVERSING
		VALVE
	COMPRESSOR	COOLING
		HEATING

	Pipe size(Diameter:ø)		Piping length		Elevation
MODEL
	Gas	Liquid	Rated	Max	Rated		Max
9K, 12K	1/2"	1/4"	7.62m(25ft)	15m(50ft)	5m(16ft)		8m(26ft)
(Cooling & Heating)
18K	5/8"	1/4"	7.62m(25ft)	15m(50ft)	5m(16ft)		8m(26ft)
(Cooling & Heating)
24K	5/8"	3/8"	7.62m(25ft)	15m(50ft)	5m(16ft)		8m(26ft)
(Cooling & Heating)

For installation over rated, *a proper quantity of refrigerant should be added for each 3.3ft (1m).

a proper quantity of refrigerant

9k, 12k	0.7 Oz (20g)
18k, 24k	1.4 Oz (40g)

Ex) 18K: When installed at a distance of 50ft(15m), 10.6Oz(295g) of refrigerant should be added. (50-25) 1.4 3.3 = 10.6 Oz (295g) of refrigerant to add

Unit precharged for 25ft. line sets.

- 11 -

Wiring Diagram

(1)Indoor Unit

1.9K, 12K, 18K, 24K(Cooling Only Models, Cooling & Heating Models)

		STEP	BLDC
		MOTOR	MOTOR
(ROOM)		CN-UP/DOWN	CN-MOTOR
	TH-
THERMISTOR
(PIPE)	NC	MAIN P.C.B
			C/DCD-NC	BL	4
B.C.PDISPLAY				BK
	ISPD-NC				3
				BR
					2
				RD
					1
					PILLAR
					TERMINAL

INDOOR WIRING DIAGRAM

3854AR7074A

TO UNITOUTDOOR

- 12 -

(2) Outdoor Unit

• Cooling Only Models

1. 9K, 12K

BL		MAIN P.C.B
RD	YL
	T/B 1
	BR	ZNR
	MOTOR	FUSE
	RD	3.15A

RY-COMP

CN-TRANS

BL BL

BK

BK

TRANSFORMER

CAPACITOR

BR

3	4	CN-POWER	CN-DC/DC
F
C	BR	BL	RD BR BK BL
		FUSE
H		2.5A
BL
YL	TERMINAL		(N)	(L)	G
BR	BLOCK

	R S C	O.L.P
	COMP.		TO INDOOR UNIT
			POWER
			INPUT
		OUTDOOR WIRING DIAGRAM	3854A30077Z

2. 18K

MAIN P.C.B

OR(BR)

BL

TRANSFORMER

T/B 1

YL

BK

CN-TRANS

BL

MOTOR

ZNR

BK

FUSE

BK

BR

RY-COMP

3.15A

CAPACITOR

FH

BR

3

4

CN-POWER CN-DC/DC

C

BL

BR

BL

RD BR BK BL

FUSE

2.5A

1

8

BR

BR

YL

6

O.L.P

S

C

4

BL

R

BR

0

2

TERMINAL

G

COMP.

BL

BLOCK

RD

TO INDOOR UNIT

POWER

OUTDOOR WIRING DIAGRAM

3854AR7077J INPUT

3. 24K

MAIN P.C.B

OR(BR)

BL

TRANSFORMER

T/B 1

YL

BK

CN-TRANS

BL

MOTOR

ZNR

BK

FUSE

BK

BR

RY-COMP

3.15A

CAPACITOR

FH

BR

3

4

CN-POWER CN-DC/DC

C

BL

BR

BL

RD BR BK BL

FUSE

2.5A

1

8

BR

BR

YL

6

R

S

C

0

4

BL

2

TERMINAL

G

COMP.

BL

BLOCK

RD

TO INDOOR UNIT

POWER

OUTDOOR WIRING DIAGRAM

INPUT

3854AR7077L

- 13 -

• Cooling & Heating Models

1. 9K, 12K

BK	T/B 3	RD
4WAY-
VALVE		RD
BK T/B 4

BL

RD YL

WH	WH
T/B 1	WH
MOTOR	T/B 2

CAPACITOR	C	FH	HEATER
			WH
			CRANK
			CASE
BR		YL
R S C BR			RD

4WAY-CN		RY-4WAY	MAIN P.C.B
FAN-CN			FUSE	TRANS-CN	BL	TRANSFORMER
RY-FAN					BL
	RY-HEATER		ZNR		BK
					BK
RY-COMP			3.15A

3	4	CN-POWER CN-DC/DC
	BR	RD BR BK BL
		BL
		FUSE
		2.5A
BL
	TERMINAL		(N)	(L)	G
	BLOCK

O.L.P	TO INDOOR UNIT
COMP.
	POWER
	INPUT
OUTDOOR WIRING DIAGRAM	3854A30077W

2. 18K, 24K

BK

T/B 1

RD

4WAY

RY-4WAY MAIN P.C.B

4WAY-

T/B 2

CN-

VALVE

OR(BR)

BK

RD

RY-FAN

BL

TRANSFORMER

YL

BK

BK

CN-TRANS

BL

MOTOR

CN-FAN

RY-HEATER

ZNR

BK

WH

WH

BK

T/B 3

WH

FUSE

T/B 4

RY-COMP

3.15A

CAPACITOR

FH

WH

3

4

CN-POWER CN-DC/DC

C

BL

CRANK CASE

BR

RD BR BK BL

BR

BL

HEATER

FUSE 2.5A

1

8

BR

BR

YL

6

R

S

C

0

4

BL

TERMINAL

2

BL

G

COMP.

BLOCK

RD

TO INDOOR UNIT

POWER

OUTDOOR WIRING DIAGRAM

3854AR7077M

INPUT

- 14 -

Operation Details

(1) The function of main control

1.Time delay Safety Control

•3min.; The compressor operation is delayed for 3 minutes to balance the pressure of cycle. (Protection of compressor)

•5sec.; The indoor fan is delayed for 5 seconds, when operating initially, to prevent noises occurred by the vertical louver and wind.

•2min.; The reversing valve is delayed for 2 minutes to prevent the refrigerant-gas for abnormal noise when the heating operation is OFF or switched to the other operation mode while compressor is off.

While compressor is running, it takes 3~5 seconds to switch.

2. Chaos Swing Mode

•By the Chaos Swing key input, the upper/lower vane automatically operates with the Chaos Swing or they are fixed to the desired direction.

•While in Chaos Swing mode, the angles of cooling and heating cycle operations are different.

< Cooling Mode >		< Heating Mode >
CLOSED		CLOSED

8°

8°

OPEN

OPEN

3.Cooling Operation Mode

•When selecting the Cooling( ) Mode Operation, the unit will operate according to the setting by the remote control and the operation diagram is shown below.

INTAKE AIR TEMP.

SETTING TEMP. +1°F

(Compressor ON)

	SETTING TEMP. -1°F
	(Compressor OFF)		More than		More than
			3 minutes		3 minutes
	INDOOR FAN SPEED	Setting	Low	Setting	Low	Setting
		fan speed		fan speed		fan speed
	COMPRESSOR	ON	OFF	ON	OFF	ON

■Protection of the indoor heat exchanger from frosting

•Compressor and outdoor fan stop when indoor pipe temperature is below 0°C(32°F) and restart at the pipe temperature is above 7°C(45°F).

-15 -

4.Auto Operation (Electronic control mode)

•The operation procedure is shown below. (Cooling & Heating Model)

Press Start/Stop Button

Select Auto Operation Mode

Check the Room temperature

Operation mode

Indoor fan speed

are decided automatically by the unit electronic control.

Setting temperature

Intake-air

below 70°F

Over

~

below

Over 76°F

temperature

70°F

76°F

Operation Mode

Heating

Soft Dry

Cooling

If initial mode is decided, that mode is continued without the room temperature changing.

■ Auto Operation for Cooling

Operation Condition

Intake-air Temperature

Setting Temperature

Fan Speed

Air Direction Control

Over 78°F

77°F

Over 76°F~below 78°F

Intake air -1°C

In this mode,

When Auto Operation

Over 72°F~below 76°F

Intake air -0.5°C

when pressing

initial start

the vertical air

Controlled by

Over 68°F~below 72°F

Intake air temperature

direction control

the electronic

button, vertical

below 64°F

64°F

control

louver swings up

and down

When pressing room

Over 64°F~below 86°F

Electronic control

temperature setting

automatically.

below 64°F

64°F

button during Auto

Operation

over 86°F

86°F

INTAKE AIR TEMP.

SETTING TEMP. +1°F

(Compressor OFF)

SETTING TEMP. -1°F

(Compressor ON)

INDOOR FAN SPEED

The electronic control operation

COMPRESSOR

ON

OFF

ON

OFF

- 16 -

■ Auto Operation for Dehumidification(only Heating Model)

•The Setting temperature will be same that of the auto operation for cooling.

-Compressor ON temperature; Setting temperature +2°F

-Compressor OFF temperature; Setting temperture -1°F

Intake-air temp.	below 68°F	Over 68°F~below 70°F	over 86°F
Setting temp.	68°F	Intake air temperature +1°F	86°F

■ Auto Operation for Heating(only Heating Model)

-Compressor ON temperature; Setting temperature

-Compressor OFF temperature; Setting temperature +6°F

■Vertical louver auto operation : During Auto Operation, pressing the chaos swing button makes the horizontal louvers swing up and down automatically.

If you want to stop auto-swing, press chaos swing button again.

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5.Healthy Dehumidification

•When the dehumidification operation input by the remote control is received, the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature.

26°C ≤	Intake Air Temp	25°C
24°C ≤	Intake Intake Air Temp<26°C	Intake Air Temp-1°C
18°C ≤	Intake Intake Air Temp<24°C	Intake Air Temp-0.5°C
Intake Air Temp<18°C		18°C

•While in compressor off, the indoor fan repeats low airflow speed and pause.

•While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidification operation and 4-min compressor off repeat.

Compressor ON Temp. Setting Temp+0.5°C Compressor OFF Temp. Setting Temp-0.5°C

•In 10-min dehumidification operation, the indoor fan operates with the low airflow speed.

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6. Heating Operation Mode(only Heating Model)

The unit will operate according to the setting conditions by the remote controller.

The operation diagram is shown below.

	INTAKE AIR TEMP.
	SETTING TEMP. +6°F
	(Compressor OFF)
				A	B			A
	SETTING TEMP.
	(Compressor ON)		minimum		minimum		minimum
			10sec.		1 min.		10sec.
	INDOOR FAN SPEED	Selecting	Low	OFF	Low	Selecting	Low	OFF
		fan speed				fan speed
	COMPRESSOR	ON		OFF		ON		OFF

•A point; While the indoor pipe temperature is higher than 95°F, indoor fan operates at low speed. When the indoor pipe temperature becomes lower than 95°F, indoor fan stops.

•B point; When the indoor pipe temperature is higher than 38°C(100°F), fan operates at selected fan speed.

■Hot-Start Control

•The indoor fan stops until the indoor pipe temperature will be reached at 82°F.

•During heating operation, if indoor pipe temperature falls below 78°F fan stops.

•The operation diagram is shown below.

INDOOR PIPE		1min
TEMP.
82°F
78°F
INDOOR FAN SPEED	OFF	LOW		Selecting	OFF
				fan speed
COMPRESSOR			ON

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7.Cooling or Heating Mode with Sleep Mode Auto Control

•When selecting the Cooling( ) or the Heating( ) combined with the Sleep Mode Auto Control(), the operation diagram is as following.

■Cooling Mode with the Sleep Mode

•The setting temperature will be automatically raised by 2°F 30 minutes later and by 4°F 1 hour later.

•The operation will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

INTAKE AIR TEMP.		30 minutes			30 minutes
					2°F
SETTING TEMP. +1°F				2°F
(Compressor ON)
SETTING TEMP. -1°F		More than
(Compressor OFF)				More than
		3 minutes		3 minutes
INDOOR FAN SPEED	Low	Low	Low	Low	Low
COMPRESSOR	ON	OFF	ON	OFF	ON

■Heating Mode with the Sleep Mode(only Heating Model)

•The operation will be stopped after 1, 2, 3, 4, 5, 6, 7 hours.

INTAKE AIR TEMP.
SETTING TEMP. +6°F
(Compressor OFF)
SETTING TEMP.
(Compressor ON)		More than		More than		More than
		3 minutes		3 minutes		3 minutes
INDOOR FAN SPEED	Med	Low or OFF	Med	Low or OFF	Med	Low or OFF
COMPRESSOR	ON	OFF	ON	OFF	ON	OFF

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8. Forced Operation

Operation procedures when the remote control can't be used.

Open the front panel upward and move the Slide Switch to the Forced Operation position.

If you want to stop operation, move the Slide Switch to the Auto Restart or the Remote Control position.

In case the power comes on again after power failure on the Forced Operation position, the operating conditions are automatically set as follows:

During Forced Operation, the initial mode continues.

Slide Switch

FORCED

OPERATION

Slide

AUTO

Switch RESTART

REMOTE

CONTROL

Open the front panel upward

	Cooling		Heat pump Model
	Model	Room Temp. ≥ 24°C(76°F)	21°C(70°F) ≤ Room Temp. < 24°C(76°F)	Room Temp. < 21°C(70°F)
Operating mode	Cooling	Cooling	Healthy Dehumidification	Heating
Indoor FAN Speed	High	High	Healthy Dehumidification Rule	High
Setting Temperature	22°C(72°F)	22°C(72°F)	23°C(74°F)	24°C(76°F)

9. AUTO RESTART

In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate procedures automatically to the previous operating conditions.

If you want to use this operation, Open the front panel upward and move the slide switch to the Auto Restart position.

If you do not want to use this operation, move the Slide Switch to the Remote Control position.

Slide Switch

	FORCED
Slide	OPERATION
Switch	AUTO
	RESTART

REMOTE

CONTROL

Open the front panel upward

When you are out for a while, put the Slide Switch on the Remote Control.

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Display Function

Operation Indicator

• Cooling, Soft Dry, Fan, Heating

Sleep timer Indicator

• Sleep Mode

Timer Indicator

• Timer Mode

	Defrost Indicator or		: Cooling & Heating Model only
	Hot start Indicator	OUT	: only Cooling Model
		DOOR

•Hot-start, Defrost

•Compressor ON

•BUZZER SOUND

• Power Input or Reset	: One short beep.
• When Operation Stop Button is pressed		: One long beep.

• When Remote Controller Buttons except for Operation Stop are pressed : Two short beep.

Self-diagnosis Function

	CODE NO.	DIAGNOSIS	Operation Indicator LED Blinks	Unit Operation
		Indoor room temperature thermistor or	Once	Still Operation
		pipe temperature thermistor Short/Open
		Outdoor pipe thermistor Short/Open	Twice	Outdoor Unit Off
		Communication failure between indoor and	5 times	Stop
		outdoor

•LED blinks as many times as code No. (0.5 second ON/0.5 second OFF) with 3 seconds interval.

•While the unit is off, no indication displays.

•If more than one code occurs simultaneously, bigger code No. is displayed.

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