Carrier 42NQ018N User manual

42NQ018N / 38NY018N
SERVICE MANUAL
AIR CONDITIONER
SPLIT WALL TYPE
FILE NO. SVM-10035-1
Revised Apr, 2010

–1–
FILE NO. SVM-10035
CONTENTS
1. SPECIFICATIONS
2. CONSTRUCTION VIEWS
2-1 Indoor Unit
2-2 Outdoor Unit
3. WIRING DIAGRAM
4. SPECIFICATION OF ELECTRICAL PARTS
4-1 Indoor Unit
4-2 Outdoor Unit
5. REFRIGERATION CYCLE DIAGRAM
6. CONTROL BLOCK DIAGRAM
7. OPERATION DESCRIPTION
7-2Outline of Air Conditioner Control
7-3Description of Operation Circuit
7-4Description of Safety and Reliability Prevention Function
7-5ECO Operation
7-6FILTER check lamp
7-7Auto Restart Function
7-1 Remote control
8. INSTALLATION PROCEDURE
8-1 Safety Cautions
8-2 Installation Diagram of Indoor and Outdoor Units
8-3 Installation
8-4 Indoor Unit
8-5 Outdoor Unit
8-6 Others

FILE NO. SVM-10035
9-5Troubleshooting Flowcharts
Troubleshooting for Wiring
HOW TO REPLACE THE MAIN PARTS
9. TROUBLESHOOTING CHART
9-1 Troubleshooting Procedure
9-2 Basic Check Items
9-3 Primary Judgement
9-4 Self-Diagnosis by Remote Control (Check Code)
9-6
9-7Troubleshooting for P.C. Board
9-8Troubleshooting for Remote Control
10.
10-1 Indoor Unit
10-2 Outdoor Unit
11. EXPLODED VIEWS AND PARTS LIST
11-1 Indoor Unit (E - Parts Assy)
11-2 Indoor Unit
11-3 Outdoor Unit
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−3 −
FILE NO. SVM-10035
1. SPECIFICATIONS
MODEL
ITEM Cooling Heating
kW
Phase
V
Hz
Power consumption kW
Power factor %
Running Indoor A
Current Outdoor A
Starting current A
Moisture removal lit/h
Noise Indoor (H/M+/M/L+/L) dB
Outdoor dB
Refrigerant Name of refrigerant
Rated amount kg
Refrigerant control
Interconnection Gas side size mm
pipe Connection type
Liquid side size mm
Connection type
Maximum length m
(One way)
Maximum height m
difference
INDOOR UNIT
Dimensions Height mm
Width mm
Depth mm
Net weight kg
Evaporator type
Indoor fan type
Airflow volume High fan m3/h
Medium fan m3/h
Low fan m3/h
Fan motor output W
Air filter
OUTDOOR UNIT
Dimensions Height mm
Width mm
Depth mm
Net weight kg
Condenser type
Outdoor fan type
Airflow volume m3/h
Fan motor output W
Compressor Model
Output W
Safety device
Louver type
Usable outdoor temperature range °C
Note *1 Chargeless pipe
*2 Maximum pipe
1500
57 57 58
1.53
6.65 6.70 6.35
31
50
1.60
96
1.51 1.55
98 97
42NQ018N/ 38NY018N
240V 220V 240V
15*1
2550 2400 2550
20*2
42NQ018N
1000
840
750
38NY018N
Automatic louver
15 ~ 43 -10 ~ 24
42
PA200X2CS-4KU1
Propeller fan
2400
Finned tube
715
780
290
47
30
Honeycomb woven filter with PP frame
Finned tube
Cross flow fan
1000
900
770
228
13
Flare connection
8
Td Sensor, Fuse, IOL
320
1050
Capillary tube
∅12.7
Flare connection
∅6.35
R410A
56
44/42/39/37/35
2.0
0.30
7.05
1.58
98
5.45 5.565.12
Capacity
Power source
220V
5.10
1∅
220 - 240

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FILE NO. SVM-10035
Note : 1
•Capacity is based on the following temperature conditions.
Note : 2
•Charge refrigerant according to the table below.
Refrigerant
*1 No need to charge 15 m or less
extra refrigerant
*2 Need to charge Over 15 m up to 20 m (20 g/m)
extra refrigerant
Temperature Condition JIS C9612
Cooling
Indoor unit inlet air temperature (DB) 27°C
(WB) 19°C
Outdoor unit inlet air temperature (DB) 35°C
(WB) 24°C
42NQ018N / 38NY018N

2. CONSTRUCTION VIEWS
2-1 Indoor Unit
FILE NO. SVM-10035
– 5–
65
262.5
40
262.5
215
235
215
235
320
40
10947 215.5 153.5
85 23
65
200
525
278 200 222 150
6)
Hanger 8~
Hanger Hanger
Center line
10)
Installation plate outline
For stud bold (
For stud bold (
Outline of indoor unit
786
Knock out system
73.5
50
228
7
73.57
Front Panel
Grille Inlet
Knock out system
50
Air filter
Heat exchanger
Air inlet
Air outlet
1050
320
Drain hose (0.5m)
Connecting pipe (0.39m) (Flare 6.35)
Hanger
(Flare 12.70)
Connecting pipe (0.49m)
Hanger
132
7278
50
78
50
72
19
157
Wireless remote controller
56
Remote controller holder
26
125
63

HANDLE
COVER-PV
HANDLE
600
Z View Service port
320
306
A Detail Drawing (Back leg)
Ø
25 Drain outlet
2Ø11x14 Hole
(For Ø8-Ø10 anchor bolt) B
Ø6Hole
Ø11x14 Hole
50
36 R15
R
5.5
Ø6 hole
28
320
86
A
125108
600 or more
Air out
let
320
600
Air inlet
4xØ11 Long holes(For Ø8- Ø10 anchor bolt)
Gas-side
(FlareØ 12.70)
Liquid side
(Flare Ø6.35)
90 600 90 69 342
320
Z
50
36 R15
B Detail Drawing (Front leg)
Ø436
FAN-GUARD
715
290
275
600 or more
84
129
54
Electrical part cover
320
306
100 or more
100 or more
Installation dimension
2.2Outdoor Unit
FILE NO. SVM-10035
– 6–

3
12
TRANSFORMER
MAINP.C. BOARD (MCC-890)
OUTDOOR
UNIT
GRN&YEL
FERRITE CORE
DISCHARGE
PIPE
SENSOR (TD)
HEAT
EXCHANGER
SENSOR (TE)
CN08
CN07
BLU
BLU
BLK
BLK
11
2
33
11
2
33
RED
RED
BLK
BLK
MAGNETIC
CONTACTOR
A1
A2
52C
1/L1 5/L3
2/T1 6/T3
PNK
WHI BLK WHI BLK BLK
COIL FOR
4 WAY VALVE
RED
RED
RED
CAPACITOR CAPACITOR
BLK
BLK
WHI
RED CN01
CN05
GRY
1
3
5
7
9
1
3
5
7
9
BLK
BLK
RED
RED
11
33
11
33
2
CN11
BLU
YEL
1
3
1
3
1
1
3
CN02
BLU
BLU
11
33
CN03
F01
250VAC T6. 3A
CR11
CR12
CR13
RY07
RY05
RY06
SG01
CN06
TNR
R74
TNR
R73
COMPRESSOR FAN MOTOR
OUTDOOR
TERMINAL
BLOCK
LN3
1 2
S
R
C
POWER SUPPLY
220-240V~ 50Hz
i
CHASSIS
3. WIRING DIAGRAM
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FILE NO. SVM-10035

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FILE NO. SVM-10035
4. SPECIFICATION OF ELECTRICAL PARTS
4-1. Indoor Unit
SWT-77 DC 7V, 12V
No. Parts name Type Specifications
1Fan motor (for indoor) ICF-340-30-2B DC 340V, 30W
2Thermo sensor (TA-sensor) 10k at 25 C
3 Switching Transformer (T01)
4Microcontroller unit (IC15)TMP87CM40ANG-6P68
5 Heat exchanger sensor 10k at 25 C
(TC-sensor)
6Line filter (L01) LC*SS11V-R06270
27mH, 600mA
7Bridge rectifier (DB01) D3SBA60 4A, 600 V
8Capacitor (C03)
EKMH451VSN121MQ35S
120mF, 450V
9Fuse (F01) BET6.3A T6.3A, 250VAC
10 Varistor (R09, R10)SR561K14DO560 V
11 Resistor (R01 )
RF-5TK1R8
1.8 , 5W
12 Louver motor MP24Z3T 12VDC
W
W
W
°
°
4-2. Outdoor Unit
Output (Rated) 1500W, 2poles, 1 phase, 220 −240V, 50Hz
1Compressor PA200X2CS-4KU1 Winding resistance (Ω)Red-BlackWhite-Black
(at 20°C) 1.85 2.62
Output (Rated) 42W, 4poles, 1 phase, 220 – 240V, 50Hz
2Fan motor (for outdoor) FG-240-42A-1 Winding resistance (Ω)Red-BlackWhite-Black
(at 20°C) 128 126
3Running capacitor DS451305NPQB AC 450V, 3.0µF
(for fan motor)
4Running capacitor B32332I5606J063 AC 450V, 50µF
(for compressor)
5Solenoid coil VHV (STF) AC 220 −240V
(for 4-way valve)
6Thermo sensor TE / TD 10kΩat 25°C / 50kΩat 25°C
7Magnetic contactor A23T 220 −240V, 50Hz
8Transformer TT-05 220 −240V
9Microcomputer TMP47C840N
No. Parts name Type Specifications
10 Varistor (R73, R74) 15G471K 470V
11 Fuse (F01) TSCR T6.3A, 250V

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FILE NO. SVM-10035
5. REFRIGERATION CYCLE DIAGRAM
Discharge Muffler
∅ 25x160L
Heat exchanger
Indoor unit
Cross flow fan
Cooling
Heating
4-way valve
Heating Cooling Compressor
Accumulator
Heat exchanger
Propeller fan
Outdoor unit
Capillary tube
Æ2.0 x 1000
Capillary tube
Æ1.7 x 600
PA200X2CS-4KU1
Cooling
Heating Mark ( ) means check points of Gas Leak.
O.D.:12.7 mm O.D.:6.35 mm
Cooling
Heating
Packed valve
(Æ12.7)
Packed valve
(Æ6.35)
0.39 m
(Connecting pipe) 0.49 m
(Connecting pipe)
T1
P
Refrigerant
R410A : 1.53 kg.
Æ12.7 Æ6.35
Ambient temp.
conditions DB/WB
(°C)
Indoor Outdoor
Standard 2.53 42.0 High 20/15 7/6
Heating Overload*1 3.30 ~ 3.65 51.0 ~ 55.0 Low27/-24/18
Low temperature 1.75 32.0 High 20/
Standard 0.94 11.0 High 27/19 35/24
Cooling Overload 1.12 15.0 High 32/23 43/26
Low temperature 0.72 4.2 Low21/15 21/15
Standard
pressure
P
(MPaG)
Surface temp. of heat
exchanger interchanging
pipe
T1
(°C)
Fan speed
(indoor)
50Hz
Note
Measure the heat exchanger temperature at the center of U-bend. (By means of TC sensor)
*1 During heating overload operation, a value for the high temperature limit control operation is included.
l
l
--10/-10
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