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.
®
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
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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).
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Remote Controller Operation ON/OFF
Operation Mode Selection Cooling Operation Mode.( (Cooling (Heating model only) model only)
)
Healthy Dehumidification Operation Mode.(
Auto 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 TEMPERATURE
LOW
Down to 18°C(64°F) Heating Up to 30°C(86°F)
HIGH
Cooling
JET COOL
Selecting °C / °F °C / °F
Setting the Time or Timer
Timer Selection ON
OFF
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
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Down to 16°C(60°F) Up to 30°C(86°F)
Product Specifications(Cooling Only) Items Unit Power Supply ø, V, Hz Cooling Capacity BTU/h Input W Running Current A COMP. Locked Rotor AMP. A E.E.R BTU/hW Air Circulation m3/min(cfm) Moisture Removal l/h(pts/hr) Noise Level Indoor, High dB(A) (Sound Med dB(A) Pressure, 1m) Low dB(A) Outdoor, Max dB(A) Features Temperature Control Air Deflection Steps, Fan/Cool Airflow Direction Control(up&down) Airflow Direction Control(left&right) Remocon Type Setting Temperature Range, Cooling Mode Temperature Increment Auto Operation(electronic control) Self Diagnosis Timer Sleep Operation Healthy Dehumidification Mode Restart Delay minutes Refrigerant(R-22) Charge g(oz) Power cord AWG #: P*mm2 Fuse or breaker Capacity A Connecting Cable AWG #: P*mm2 Connecting Tube Liquid Side mm(in) (ø. Socket Flare) Gas Side mm(in) Length, std m(ft) Additional Drain Hose(Outer Dia.) mm(in) Dimensions Indoor mm (WxHxD) in Outdoor mm in Net Weight Indoor kg(lbs) Outdoor kg(lbs)
B/A-HMC09AS B/A-HMC12AS B/A-HMC18AS 1, 115V, 60 1, 115, 60 1, 230/208, 60 9,000 12,000 18,000/17,800 940 1,290 1,900/1,870 8.5 11.7 8.5/9.0 46 58 47 9.6 9.3 9.5/9.5 7.1(250) 9.4(330) 13(460) 1.2(2.6) 1.4(3) 2.5(5.3) 38 41 44 36 39 41 35 37 38 48 48 55 Thermistor Thermistor Thermistor 4-way 4-way 4-way 3/3 3/3 3/3 Auto Auto Auto Manual Manual Manual Wireless LCD Wireless LCD Wireless LCD 64~86°F 64~86°F 64~86°F 2°F 2°F 2°F Yes Yes Yes Yes Yes Yes 24hr, On/Off 24hr, On/Off 24hr, On/Off Yes Yes Yes Yes Yes Yes 3 3 3 630(22.2) 730(25.8) 1,250(44.1) 14:3*2.5 14:3*2.5 14:3*2.5 15A 20A 20A 16:4*0.75 18:4*0.75 18:4*0.75 6.35(1/4) 6.35(1/4) 6.35(1/4) 12.7(1/2) 12.7(1/2) 15.88(5/8) 7.62(25) 7.62(25) 7.62(25) 15.5(5/8) 15.5(5/8) 15.5(5/8) 802*262*165 888*287*170 1,080*314*181 31.6*10.3*6.5 35.0*11.3*6.7 42.5*12.4*7.1 770*540*245 770*540*245 870*655*320 30.3*21.3*9.6 30.3*21.3*9.6 34.3*25.8*12.6 7(15.4) 9.5(20.9) 13(28.7) 32(70.5) 32(70.5) 61(134.5)
* Design and Specifications subject to change without prior notice for product improvement.
-5-
B/A-HMC24AS 1, 230/208, 60 23,000/22,600 2,550/2,500 11.5/12.0 67 9.0/9.0 15(530) 3.1(6.6) 49 45 40 57 Thermistor 4-way 3/3 Auto Manual Wireless LCD 64~86°F 2°F Yes Yes 24hr, On/Off Yes Yes 3 2,000(70.5) 14:3*2.5 25A 18:4*0.75 9.52(3/8) 15.88(5/8) 7.62(25) 15.5(5/8) 1,080*314*181 42.5*12.4*7.1 870*655*320 34.3*25.8*12.6 13(28.7) 62(136.7)
Product Specifications(Cooling & Heating) Items Power Supply Cooling Capacity Heating Capacity Input Running Current COMP. Locked Rotor AMP. E.E.R C.O.P Air Circulation Moisture Removal Noise Level (Sound Pressure, 1m)
Cooling Heating Cooling Heating Cooling Heating
Unit ø, V, Hz BTU/h BTU/h W W A A A A BTU/hW m3/min(cfm) l/h(pts/hr) dB(A) dB(A) dB(A) dB(A)
Indoor, High Med Low Outdoor, Max Features Temperature Control Air Deflection Steps, Fan/Cool/Heat Airflow Direction Control(up&down) Airflow Direction Control(left&right) Remocon Type Setting Temperature Range, Cooling Mode Heating Mode Temperature Increment Auto Operation(electronic control) Self Diagnosis Timer Sleep Operation Healthy Dehumidification Mode Restart Delay minutes Defrost Control Hot Start Refrigerant(R-22) Charge g(oz) Power cord AWG #: P*mm2 Fuse or breaker Capacity A Connecting Cable AWG #: P*mm2 Connecting Tube Liquid Side mm(in) (ø. Socket Flare) Gas Side mm(in) Length, std m(ft) Additional Drain Hose(Outer Dia.) mm(in) Dimensions Indoor mm (WxHxD) in Outdoor mm in Net Weight Indoor kg(lbs) Outdoor kg(lbs)
B/A-HMH12AS 1, 115, 60 12,000 12,000 1,290 1,290 11.7 11.7 58 58 9.3 2.75 9.4(330) 1.4(3) 41 39 37 48 Thermistor 4-way 3/3/3 Auto Manual Wireless LCD 64~86°F 60~86°F 2°F Yes Yes 24hr, On/Off Yes Yes 3 Yes Yes 840(29.6) 14:3*2.5 20A 18:4*0.75 6.35(1/4) 12.7(1/2) 7.62(25) 15.5(5/8) 888*287*170 35.0*11.3*6.7 770*540*245 30.3*21.3*9.6 9.5(20.9) 33(72.8)
B/A-HMH18AS 1, 230/208, 60 18,000/17,800 19,000/18,700 1,900/1,870 1,900/1,870 8.5/9.0 8.5/9.0 42 42 9.5/9.5 2.9/2.9 13(460) 2.5(5) 44 41 38 55 Thermistor 4-way 3/3/3 Auto Manual Wireless LCD 64~86°F 60~86°F 2°F Yes Yes 24hr, On/Off Yes Yes 3 Yes Yes 1350(47.6) 14:3*2.5 20A 18:4*0.75 6.35(1/4) 15.88(5/8) 7.62(25) 15.5(5/8) 1080*314*181 42.5*12.4*7.1 870*655*320 34.3*25.8*12.6 13(28.7) 62(136.7)
* Design and Specifications subject to change without prior notice for product improvement.
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B/A-HMH24AS 1, 230/208, 60 23,000/22,600 23,000/22,600 2,550/2,500 2,550/2,500 11.5/12.0 11.5/12.0 67 67 9.0/9.0 2.6/2.6 15(530) 3.1(6.6) 47 44 40 58 Thermistor 4-way 3/3/3 Auto Manual Wireless LCD 64~86°F 60~86°F 2°F Yes Yes 24hr, On/Off Yes Yes 3 Yes Yes 1900(67.0) 14:3*2.5 25A 18:4*0.75 9.52(3/8) 15.88(5/8) 7.62(25) 15.5(5/8) 108*314*181 42.5*12.4*7.1 870*655*320 34.3*25.8*12.6 13(28.7) 63(138.9)
Dimensions (1) Indoor Unit
D W
H
Installation plate
Tubing hole cover
Tubing hole cover
MODEL DIM
9K
12K
18K, 24K
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")
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(2) Outdoor Unit 1. 9K, 12K L2
D
L1
W
H
L3
L5
Gas side (3-way valve)
L4
Liquid side (2-way valve)
DIM
MODEL unit
9K, 12K
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)
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2. 18K, 24K
L1 L9
H
L3
L2
D
W
L4
L10
Gas side 3-way valve
L6
L5
L7
MODEL
Liquid side 3-way valve
L8
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)
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Refrigeration Cycle Diagram • Cooling Only Models INDOOR UNIT
OUTDOOR UNIT
LIQUID SIDE
CAPILLARY TUBE
HEAT EXCHANGER (EVAPORATOR)
HEAT EXCHANGER (CONDENSER)
COMPRESSOR
GAS SIDE
Pipe size(Diameter:ø)
Piping length
Elevation
MODEL Gas
Liquid
Rated
Max
Rated
Max
9K, 12K (Cooling Only)
1/2"
1/4"
7.62m(25ft)
15m(50ft)
5m(16ft)
8m(26ft)
18K (Cooling Only)
5/8"
1/4"
7.62m(25ft)
15m(50ft)
5m(16ft)
8m(26ft)
24K (Cooling Only)
5/8"
3/8"
7.62m(25ft)
15m(50ft)
5m(16ft)
8m(26ft)
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 OUTDOOR UNIT
INDOOR UNIT
LIQUID SIDE
CAPILLARY TUBE
HEAT EXCHANGER (EVAPORATOR)
CHECK VALVE
HEAT EXCHANGER (CONDENSER)
GAS SIDE REVERSING VALVE COOLING HEATING
COMPRESSOR
Pipe size(Diameter:ø) MODEL
Piping length
Elevation
Gas
Liquid
Rated
Max
Rated
Max
9K, 12K (Cooling & Heating)
1/2"
1/4"
7.62m(25ft)
15m(50ft)
5m(16ft)
8m(26ft)
18K (Cooling & Heating)
5/8"
1/4"
7.62m(25ft)
15m(50ft)
5m(16ft)
8m(26ft)
24K (Cooling & Heating)
5/8"
3/8"
7.62m(25ft)
15m(50ft)
5m(16ft)
8m(26ft)
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
BLDC MOTOR
CN-UP/DOWN
CN-MOTOR
CN-DC/DC
MAIN P.C.B
INDOOR WIRING DIAGRAM
- 12 -
BL BK BR RD
4 3 2 1 PILLAR TERMINAL
3854AR7074A
TO OUTDOOR UNIT
STEP MOTOR
CN-DISP
DISPLAY P.C.B
(ROOM) THERMISTOR (PIPE)
CN-TH
1. 9K, 12K, 18K, 24K(Cooling Only Models, Cooling & Heating Models)
(2) Outdoor Unit • Cooling Only Models 1. 9K, 12K MAIN P.C.B
CN-TRANS
YL T/B 1
RD
ZNR
BR MOTOR
FUSE 3.15A
RD
BL BL
TRANSFORMER
BL
BK BK
RY-COMP 4
CN-POWER
F
CAPACITOR
3
BL
CN-DC/DC
RD BR BK BL
C
BR H
FUSE 2.5A
BL BR
(N)
TERMINAL BLOCK
YL BR
(L)
G
R S C
COMP. O.L.P
TO INDOOR UNIT POWER INPUT
OUTDOOR WIRING DIAGRAM
3854A30077Z
2. 18K
ZNR
MOTOR
FUSE 3.15A
BK
F
BR
C
3
4
CN-POWER CN-DC/DC
BR
BL
8
YL O.L.P S C BR
RD BR BK BL FUSE 2.5A
BL
1
R
BL BL BK
RY-COMP
H
CAPACITOR
BR
BR
CN-TRANS
T/B 1
BK
YL
TRANSFORMER
MAIN P.C.B OR(BR)
BR
6 4 BL 2
0
COMP.
TERMINAL BLOCK
BL RD
G
TO INDOOR UNIT
OUTDOOR WIRING DIAGRAM
3854AR7077J
POWER INPUT
3. 24K
ZNR
MOTOR
FUSE 3.15A
S C
0
BK
4
CN-POWER CN-DC/DC
BR
BL
RD BR BK BL FUSE 2.5A
BL
1
R
3
C
F
BR
YL
BL BL BK
RY-COMP
H
CAPACITOR
BR
BR
CN-TRANS
T/B 1
BK
YL
TRANSFORMER
MAIN P.C.B OR(BR)
8
BR
6 4 BL 2
COMP.
BL
TERMINAL BLOCK
RD
OUTDOOR WIRING DIAGRAM
- 13 -
G
TO INDOOR UNIT
3854AR7077L
POWER INPUT
• Cooling & Heating Models
BK
T/B 3
RD
BK
T/B 4
RD
RY-4WAY
MAIN P.C.B
BL
F
CN-FAN
WH T/B 1
MOTOR CAPACITOR
RY-FAN
YL
RY-HEATER
WH WH T/B 2
ZNR FUSE 3.15A
BL BL BK BK
RY-COMP 3
WH
C
CN-TRANS
RD
TRANSFORMER
4WAYVALVE
CN-4WAY
1. 9K, 12K
H
CRANK CASE HEATER
4
CN-POWER
BR
CN-DC/DC
RD BR BK BL
BL FUSE 2.5A
BL BR
YL S C
R
BR O.L.P
COMP.
(N)
TERMINAL BLOCK
RD
(L)
G
TO INDOOR UNIT POWER INPUT
OUTDOOR WIRING DIAGRAM
3854A30077W
F
R
C YL S C
0
8
ZNR FUSE 3.15A
BL BL BK BK
TRANSFORMER
WH T/B 4
RY-COMP 3
CRANK CASE HEATER
1 BR
RY-HEATER
WH
CN-TRANS
WH T/B 3
WH BL
MAIN P.C.B
RY-FAN
BK
BR
4
CN-POWER CN-DC/DC
BR
BL
H
CAPACITOR
MOTOR
RY-4WAY
RD
BK BK
YL
RD
T/B 2
CN-FAN
OR(BR)
T/B 1
RD BR BK BL FUSE 2.5A
BK
4WAYVALVE
CN-4WAY
2. 18K, 24K
BR
6 4 BL 2
BL
TERMINAL BLOCK
G
COMP. RD
TO INDOOR UNIT
OUTDOOR WIRING DIAGRAM
- 14 -
3854AR7077M
POWER INPUT
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)
INDOOR FAN SPEED COMPRESSOR ■ Protection
More than 3 minutes
More than 3 minutes
Setting fan speed
Low
Setting fan speed
Low
ON
OFF
ON
OFF
Setting fan speed ON
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 Setting temperature
are decided automatically by the unit electronic control.
Intake-air temperature
below 70°F
Operation Mode
Heating
Over 70°F
~
below 76°F
Over 76°F
Soft Dry
Cooling
❋ If initial mode is decided, that mode is continued without the room temperature changing. ■ Auto
Operation for Cooling
Operation Condition
When Auto Operation initial start
When pressing room temperature setting button during Auto Operation
Intake-air Temperature
Setting Temperature
Over 78°F
77°F
Over 76°F~below 78°F
Intake air -1°C
Over 72°F~below 76°F
Intake air -0.5°C
Over 68°F~below 72°F
Intake air temperature
below 64°F
64°F
Over 64°F~below 86°F
Electronic control
below 64°F
64°F
over 86°F
86°F
Fan Speed
Air Direction Control
Controlled by the electronic control
In this mode, when pressing the vertical air direction control button, vertical louver swings up and down automatically.
INTAKE AIR TEMP. SETTING TEMP. +1°F (Compressor OFF) SETTING TEMP. -1°F (Compressor ON)
INDOOR FAN SPEED COMPRESSOR
The electronic control operation ON
OFF
- 16 -
ON
OFF
■ 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
■ Auto
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
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.
- 17 -
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
