Samsung AQT24A1QE/B User manual

SERVICE Manual
CONTENTSAIR CONDITIONER
1. Precautions
2.ProductSpecifications
3. OperatingInstructions and
Installation
4.Disassembly and Reassembly
5. Troubleshooting
6. Exploded Views andParts List
7. BlockDiagrams
8. PCBDiagrams
9. Wiring Diagrams
10. Schematic Diagrams
ROOM AIR CONDITIONER
INDOOR
AQT24A1QE/B
AQT24B1QE/B
AQT18A1QE/B
AQT18B1QE/B
INDOOR
AQT24A2QE/B
AQT24B2QE/B
AQT18A2QE/B
AQT18B2QE/B

© Samsung Electronics Co., Ltd. DEC. 1998.
Printed in Korea.
Code No. DB81-00029A(1)

1. Warning: Prior to repair, disconnect the
power cord from the circuit breaker.
2. Use proper parts: Use only exact replace-
ment parts. (Also, we recommend replacing
parts rather than repairing them.)
3. Use the proper tools: Use the proper tools
and test equipment, and know how to use
them. Using defective tools or test equip-
ment may cause problems later-intermittent
contact, for example.
4. Power Cord: Prior to repair, check the
power cord and replace it if necessary.
5. Avoid using an extension cord, and avoid
tapping into a power cord. This practice
may result in malfunction or fire.
6. After completing repairs and reassembly,
check the insulation resistance. Procedure:
Prior to applying power, measure the resis-
tance between the power cord and the
ground terminal. The resistance must be
greater than 30 megohms.
7. Make sure that the grounds are adequate.
8. Make sure that the installation conditions
are satisfactory. Relocate the unit if neces-
sary.
9. Keep children away from the unit while it is
being repaired.
10. Be sure to clean the unit and its surround-
ing area.
Samsung Electronics 1-1
1. Precautions
Fig. 1-1 Avoid Dangerous Contact
Fig. 1-2 No Tapping and No Extension Cords
Fig. 1-3 No Kids Nearby!
Fig. 1-4 Clean the Unit

1-2 Samsung Electronics
MEMO

Samsung Electronics 2-1
2. Product Specifications
2-1 Table
Model
Item
Power Sourse
Capacity (ISO/SASO) kcal/h
BTU/h
Air circulation (High) m2/min
Moisture removal (High) Liters/h
Available voltage range V
Running amperes (ISO/SASO) A
Power input (ISO/SASO) kw
Power factor (ISO/SASO) %
Energy efficiency ratio (ISO/SASO) BTU/wh
Compressor locked rotor amperes A
Controls/Temperature control
Control unit
Timer
Fan speed Indoor/Outdoor
Airflow direction (indoor) Horizontal
Vertical
Comperssor
Refrigerant/Amount charged at rating g
Refrigerant control
Operation sound Indoor Hi/Me/Lc dB-A
Outdoor-Hi dB-A
Refrigerant tubing connections
Max. allowable tubing length at shippint m
Refrigerant tube diameter Narrow tube (in.)
Wide tube (in.)
Refrigerant tube kit/Accessories
Unit dimensions Height mm
Width mm
Depth mm
Package dimensions Height mm
Width mm
Depth mm
Weight Net kg
Shipping kg
AQT24A1(B1)QE/AQT24A2(B2)QE
Heat Pump
220-240V~, 50Hz
6,048 6,048
24,000 24,000
14.0 14.5
3.0
198 ~ 264
12.5 13.0
2.6 2.7
86.7 86.5
9.2 8.9
82
Microprocessor / I.C Thermostat
Wireless remote control
Q-Timer / 24-Hour ON or OFF
3 Steps and Turbo / 1 Step
Manual
Auto
Reciprocating(Tecumseh)
R22 / 1600g
Capillary tube
45 / 43 / 41
58
Flare type
10
6.35(1/4”)
15.88(5/8”)
Optional / Hanger-plate
AQT24A1(B1)QB/AQT24A2(B2)QB
Heat Pump
220V~, 60Hz
5,040 6,048
20,000 24,000
14.0 14.5
3.0
187 ~ 253
13.8 13.5
2.95 2.7
97.7 90.9
6.8 8.9
73
Microprocessor / I.C Thermostat
Wireless remote control
Q-Timer / 24-Hour ON or OFF
3 Steps and Turbo / 1 Step
Manual
Auto
Reciprocating(Tecumseh)
R22 / 1600g
Capillary tube
45 / 43 / 41
58
Flare type
10
6.35(1/4”)
15.88(5/8”)
Optional / Hanger-plate
AQT18A1(B1)QB/AQT18A2(B2)QB
Heat Pump
220V~, 60Hz
4,000 5,040
16,000 20,000
13.5 14.0
2.5
187 ~ 253
10.5 10.5
2.25 2.1
97.4 90.9
7.1 9.5
52
Microprocessor / I.C Thermostat
Wireless remote control
Q-Timer / 24-Hour ON or OFF
3 Steps and Turbo / 1 Step
Manual
Auto
Reciprocating(Tecumseh)
R22 / 1500g
Capillary tube
45 / 42 / 39
57
Flare type
10
6.35(1/4”)
12.70(1/2”)
Optional / Hanger-plate
AQT18A1(B1)QE/AQT18A2(B2)QE
Heat Pump
220-240V~, 50Hz
4,536 5,040
18,000 20,000
13.5 14.0
2.5
198 ~ 264
9.5 10.0
2.0 2.1
87.7 87.5
9.0 9.5
54
Microprocessor / I.C Thermostat
Wireless remote control
Q-Timer / 24-Hour ON or OFF
3 Steps and Turbo / 1 Step
Manual
Auto
Reciprocating(Tecumseh)
R22 / 1500g
Capillary tube
45 / 42 / 39
57
Flare type
10
6.35(1/4”)
12.70(1/2”)
Optional / Hanger-plate
Perfor-
mance
Electrical
Rating
Features
Dimensions
&
Weight
Indoor unit Outdoor Indoor unit Outdoor Indoor unit Outdoor Indoor unit Outdoor
275
1080
204
372
1153
272
13
16
638
880
310
851
1023
413
63.0
67.0
275
1080
204
372
1153
272
13
16
638
880
310
851
1023
413
63.0
67.0
275
1080
204
372
1153
272
13
16
620
787
320
680
926
451
58.0
62.0
275
1080
204
372
1153
272
13
16
620
787
320
680
926
451
58.0
62.0
Remarks : Rating Conditions are :
Indoor air temperature ISO(50Hz) : 27˚C DB/19.0˚C WB, ISO(60Hz) : 27.0˚C DB/19.5˚C WB, SASO : 29.0˚C DB/19.0˚C WB
Outdoor air temperature ISO : 35.0˚C DB/24.0˚C WB, SASO : 46.0˚C DB/24.0˚C WB

2-2 Samsung Electronics
2-2 Major Component specifications
Model
Part No.
Controls
Control circuit fuse
Type
Dia. and length mm
Fan motor model
Pols,rpm(at 240V)
Normal out W
Coil resistance(Ambient temp.20˚C) Ω
Safety devices Type
Operating temp. Open ˚C
Run capacitor µF x VAC
Type
Model
Rating
Coil resistance (Ambient temp. 25˚C) Ω
Coil
Rows x Steps
Fin pitch mm
Face area m2
AQT24A1(B1)QE/AQT24A2(B2)QE
PD-Q24B1Q-03
Microprocessor
250V, 3.15A
Cross-Flow
ø95/L = 842
IC-9430SKJ5A
4P, 1350 RPM
40W
MAIN : 160Ω
SUB : 227Ω
17AM034A5
135 ± 5°C
1.2µF X 450VAC
MSFCC20A03
DC 12V
530Ω
AL-FIN/Copper tube
2 x 15
1.2
0.315
AQT24A1(B1)QB/AQT24A2(B2)QB
PD-Q24B1Q-03
Microprocessor
250V,3.15A
Cross-Flow
ø95/L = 842
IC-9430SKF6A
4P, 1350 RPM
40W
MAIN : 140Ω
SUB : 280Ω
17AM034A5
135 ± 5°C
1.2µF X 450VAC
MSFCC20A03
DC 12V
530Ω
AL-FIN/Copper tube
2 x 15
1.2
0.315
AQT18A1(B1)QE/AQT18A2(B2)QE
PD-Q24B1Q-04
Microprocessor
250V,3.15A
Cross-Flow
ø95/L = 842
IC-9430SKJ5A
4P,1350RPM
40W
MAIN : 160Ω
SUB : 227Ω
17AM034A5
135 ± 5°C
1.2µF X 450VAC
MSFCC20A03
DC 12V
530Ω
AL-FIN/Copper tube
2 x 15
1.5
0.315
AQT18A1(B1)QB/AQT18A2(B2)QB
PD-Q24B1Q-04
Microprocessor
250V,3.15A
Cross-Flow
ø95/L = 842
IC-9430SKF6A
4P,1350RPM
40W
MAIN : 140Ω
SUB : 280Ω
17AM034A5
135 ± 5°C
1.2µF X 450VAC
MSFCC20A03
DC 12V
530Ω
AL-FIN/Copper tube
2 x 15
1.5
0.315
PCB
■Indoor unit
■Outdoor unit
Fan & Fan
Motor
S-Motor
Heat
Exch.
Model
Type
Compressor model
Normal output W
Comperssor oil kind
Comperssor oil cc
Oil Specific gravity
Coil resistance(Ambient temp.25˚C) Ω
Safety devices Type
Overloal relay
Operating temp. Open ˚C
Close ˚C
Operating amp(Ambient temp.)
Run capacitor µF x VAC
Type
Dia. and length mm
Fan motor model
Pols, rpm(at240V)
Normal output W
Coil resistance(Ambient temp.20˚C) Ω
Safety devices Type
Operating temp. Open ˚C
Close ˚C
Run capacitor µF x VAC
Coil
Rows x Steps
Fin pitch mm
Face area m2
UQT24A1(B1)QE/UQT24A2(B2)QE
Reciprocating
AWG5532EXC
2660
WITCO LP200 OR EQUIVALENT
INITIAL : 1125 REFILL : 1066
0.92
Start winding : 2.49
Run winding : 0.81
15HM2415-148
Internal Line Break
120
69
73.0 AT 2-10 SECOND
45MF X 370VAC
Propeller
ø460
OSME-716SRC
6P,850RPM
70W
MAIN : 58Ω- 88Ω
SUB : 85Ω- 150Ω
17AM034A5
135±5°C
3µF x 450VAC
AL-FIN / Copper tube
2 x 24
1.7
0.5376
UQT24A1(B1)QB/UQT24A2(B2)QB
Reciprocating
AWG5528EXN
2830
WITCO LP200 OR EQUIVALENT
INITIAL : 1125 REFILL : 1066
0.92
Start winding : 1.94
Run winding : 0.88
15HM2415-148
Internal Line Break
120
69
73.0 AT 2-10 SECOND
35MF X 370VAC
Propeller
ø460
OSME-716SRC
6P, 850 RPM
70W
MAIN : 58Ω- 88Ω
SUB : 85Ω- 150Ω
17AM034A5
135±5°C
3µF x 450VAC
AL-FIN / Copper tube
2 x 24
1.7
0.5376
UQT18A1(B1)QE/UQT18A2(B2)QE
Reciprocating
AWG5524EXC
2030
WITCO LP200 OR EQUIVALENT
INITIAL : 1125 REFILL : 1066
0.92
Common to main : 2.98
Common to sub: 1.42
15HM2416-148
Internal Line Break
130
69
73.0 AT 2-10 SECOND
35MF X 370VAC
Propeller
ø405
AMASS-035AVEB
4P, 1050 RPM
35W
MAIN : 186Ω
SUB : 210Ω
17AM037A5
150±5°C
2.5µF x 450VAC
AL-FIN / Copper tube
2 x 24
1.7
0.504
UQT18A1(B1)QB/UQT18A2(B2)QB
Reciprocating
AWG5520EXN
2070
WITCO LP200 OR EQUIVALENT
INITIAL : 1125 REFILL : 1066
0.92
Common to main : 2.72
Common to sub : 1.32
15HM2311-148
Internal Line Break
120
69
73.0 AT 2-10 SECOND
25MF X 370VAC
Propeller
ø405
AMASS-035ZTEA
4P, 1050 RPM
35W
MAIN : 127Ω
SUB : 165Ω
17AM037A5
150±5°C
2.5µF x 450VAC
AL-FIN / Copper tube
2 x 24
1.7
0.504
Compressor
Fan & Fan
Heat
Exch.

Samsung Electronics 2-3
2-3 Dimensions
2-3-1 Indoor Unit
2-3-2 Outdoor Unit
2-3-2(a) 24K BTU
(Front view)
1080 204
(Remote control)
(Rear view)
(Front view) (Rear view)
660
878
58 22

Product Specifications
2-4 Samsung Electronics
2-3-3(b) 18K BTU
(Front view) (Rear view)
582
787
340

2-5
Samsung Electronics
2-4 Pressure Graph
24K BTU
18K BTU

2-6 Samsung Electronics
MEMO