Tosot TW12HQ3D6D User manual

Service Manual

Table of Contents
Service Manual
Table of Contents
Part Ⅰ: Technical Information.......................................................................1
1. Summary......................................................................................................................1
2. Specications..........................................................................................................2
2.1 Specication Sheet...........................................................................................................2
2.2 Operation Characteristic Curve ........................................................................................4
2.3 Capacity Variation Ratio According to Temperature .........................................................4
2.4 Cooling and Heating Data Sheet in Rated Frequency .....................................................5
2.5 Noise Curve......................................................................................................................5
3. Outline Dimension Diagram........................................................................6
3.1 Indoor Unit........................................................................................................................6
3.2 Outdoor Unit .....................................................................................................................6
4. Refrigerant System Diagram......................................................................7
5. Electrical Part...........................................................................................................8
5.1 Wiring Diagram.................................................................................................................8
5.2 PCB Printed Diagram .....................................................................................................10
6. Function and Control......................................................................................12
6.1 Remote Controller Introduction .....................................................................................12
6.2 Ewpe Smart App Operation Manual ...............................................................................17
6.3 Brief Description of Modes and Functions......................................................................18
Part Ⅱ: Installation and Maintenance .................................................23
7. Notes for Installation and Maintenance..........................................23
8. Installation................................................................................................................26
8.1 Installation Dimension Diagram......................................................................................26
8.2 Installation Parts-checking ............................................................................................28
8.3 Selection of Installation Location....................................................................................28
8.4 Electric Connection Requirement ..................................................................................28
8.5 Installation of Indoor Unit................................................................................................28
8.6 Installation of Outdoor Unit.............................................................................................31
8.7 Vacuum Pumping and Leak Detection ...........................................................................32
8.8 Check after Installation and Test Operation ...................................................................32

Table of Contents
Service Manual
9. Maintenance............................................................................................................33
9.1 Error Code List ...............................................................................................................33
9.2 Procedure of Troubleshooting ........................................................................................40
9.3 Troubleshooting for Normal Malfunction.........................................................................53
10. Exploded View and Parts List ..............................................................55
10.1 Indoor Unit....................................................................................................................55
10.2 Outdoor Unit .................................................................................................................57
11. Removal Procedure.......................................................................................59
11.1 Removal Procedure of Indoor Unit ...............................................................................59
11.2 Removal Procedure of Outdoor Unit ............................................................................64
Appendix:........................................................................................................................69
Appendix 1: Reference Sheet of Celsius and Fahrenheit ....................................................69
Appendix 2: Conguration of Connection Pipe.....................................................................69
Appendix 3: Pipe Expanding Method ...................................................................................70
Appendix 4: List of Resistance for Temperature Sensor ......................................................71

1
Technical Information
Service Manual
1. Summary
Indoor Unit:
Outdoor Unit:
Remote Controller:
Part Ⅰ: Technical Information
TW12HQ3D6DO
YAG1FB2F(WiFi)
TW12HQ3D6DI
No Model Product Code Indoor Unit Product Code Outdoor Unit Product Code Remote
Controller
1 TW12HQ3D6D CB460001400_L71081 TW12HQ3D6DI CB460N01400_L71081 TW12HQ3D6DO CB437W00900_L71081 YAG1FB2F
(WiFi)

2Technical Information
Service Manual
2. Specications
2.1 Specication Sheet
Model TW12HQ3D6D
Product Code CB460001400_L71081
Power Supply
Rated Voltage V~ 208/230
Rated Frequency Hz 50/60
Phases 1
Power Supply Mode Outdoor
Cooling Capacity(Min~Max) Btu/h 12000(2900~15354)
Heating Capacity(Min~Max) Btu/h 12200(3071~18766)
Cooling Power Input(Min~Max) W785(75~1500)
Heating Power Input(Min~Max) W940(250~1600)
Cooling Power Current A 3.9
Heating Power Current A 5.3
Rated Input W 1600
Rated Current A 6.5
Air Flow Volume(SH/H/MH/M/ML/L/SL) CFM 850/800/750/600/550/450/400
Dehumidifying Volume Pint/h 2.96
EER (Btu/h)/W 15.3
COP (Btu/h)/W 12.98
SEER 30.5
SCOP 14
Application Area yd219.14-28.70
Indoor Unit
Model of indoor unit TW12HQ3D6DI
Indoor Unit Product Code CB460N01400_L71081
Fan Type Cross-ow
Diameter Length(DXL) inch Ф4 3/16X27 1/2
Fan Motor Cooling Speed (SH/H/MH/M/ML/L/SL/Q) r/min 1400/1300/1200/1100/1000/900/800/550
Fan Motor Heating Speed (SH/H/MH/M/ML/L/SL/Q) r/min 1400/1270/1200/1130/1050/980/900/-
Output of Fan Motor W 60
Fan Motor RLA A 0.09
Fan Motor Capacitor μF /
Evaporator Form Aluminum Fin-copper Tube
Pipe Diameter inch Ф1/4
Row-n Gap inch 2-1/16
Coil Length (LXDXW) inch 28 13/16X1X12
Swing Motor Model MP35CJ/MP24HF
Output of Swing Motor W 2.5/1.5
Fuse A 3.15
Sound Pressure Level (SH/H/MH/M/ML/L/SL) dB (A) 49/46/43/40/37/34/30
Sound Power Level (SH/H/MH/M/ML/L/SL) dB (A) /
Dimension (WXHXD) inch 38 13/64X11 13/16X8 13/16
Dimension of Carton Box (LXWXH) inch 40 55/64X15X12
Dimension of Package (LXWXH) inch 41X15X12 39/64
Net Weight Ib 29.8
Gross Weight Ib 36.4

3
Technical Information
Service Manual
The above data is subject to change without notice; please refer to the nameplate of the unit.
Outdoor Unit
Model of Outdoor Unit TW12HQ3D6DO
Outdoor Unit Product Code CB437W00900_L71081
Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO., LTD
Compressor Model QXAT-B121zE070
Compressor Oil FV50S
Compressor Type Rotary
Compressor L.R.A. A 35.0
Compressor RLA 6.9
Compressor Power Input W 1070
Overload Protector 1NT11L-6233/HPC115/95/KSD115ºC
Throttling Method Electron expansion valve + Capillary Sub-assy
Operation temp ºF 61~86
Ambient temp (cooling) ºF 0~115
Ambient temp (heating) ºF -22~75
Condenser Form Aluminum Fin-copper Tube
Pipe Diameter inch Φ9/32
Rows-n Gap inch 2.5-1/18
Coil Length (LXDXW) inch 30.0X2 1/4X21 11/16
Fan Motor Speed rpm 850
Output of Fan Motor W 30
Fan Motor RLA A 0.24
Fan Motor Capacitor μF /
Air Flow Volume of Outdoor Unit CFM 2400
Fan Type Axial-ow
Fan Diameter inch Φ17 1/4
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Design Pressure(High) PSIG 550
Design Pressure(Low) PSIG 240
Sound Pressure Level (H/M/L) dB (A) 53/-/-
Sound Power Level (H/M/L) dB (A) /
Dimension (WXHXD) inch 35 3/8X23 1/2X14 7/8
Dimension of Carton Box (LXWXH) inch 37 3/16X16 7/16X24 13/16
Dimension of Package (LXWXH) inch 37 5/16X16 9/16X25 3/8
Net Weight Ib 99.2
Gross Weight Ib 105.8
Refrigerant R410A
Refrigerant Charge oz 49.4
Connection
Pipe
Length ft 24.6
Gas Additional Charge oz/ft 0.2
Outer Diameter Liquid Pipe inch 1/4
Outer Diameter Gas Pipe inch 1/2
Max Distance Height ft 50
Max Distance Length ft 100
Note:The connection pipe applies metric diameter.

4Technical Information
Service Manual
2.2 Operation Characteristic Curve
2.3 Capacity Variation Ratio According to Temperature
0
1
2
3
4
5
6
7
8
9
10
020406080 100 120
Condition
Indoor:DB81°F WB66°F
Indoor air flow: Super High
Pipe length:24.6 ft
Compressor Speed(rps)
0
1
2
3
4
5
6
7
8
020406080 100 120
Condition
Indoor:DB 68°F
Indoor air flow:Super High
Pipe length:24.6 ft
Compressor Speed(rps)
Cooling Heating
Current(A)
Current(A)
50
60
70
80
90
100
110
120
130
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46
Capacity ratio(%)
Condition
Indoor:DB81°F WB66°F
Indoor air flow:
Turbo
Pipe length:5m
Outdoor temp. (°C)
Capacity ratio(%)
gnitaeHgnilooC
-20-15 -10-50 510
110
120
130
100
90
80
70
60
50
40
Outdoor temp.(°C)
Condition
Indoor:DB68°F
Indoor air flow:
Turbo
Pipe length:5m
Cooling Heating
Cooling Heating
Cooling
Capacity ratio( %)
Heating
100
105
95
90
85
80
75
70
65
60
55
50
Capacityratio(%)
Condition
Indoor:DB81°F WB66°F
Indoor air flow: Super High
Pipe length:24.6 ft
Outdoor temp(°F) Outdoor temp(°F)
89.695 100.4 107.6 118.4 -22-7.5-45 14 23 32 41 44.650
200
180
160
140
120
100
80
60
40
20
0
Condition
Indoor:DB 68°F
Indoor air flow:Super High
Pipe length:24.6 ft

5
Technical Information
Service Manual
2.4 Cooling and Heating Data Sheet in Rated Frequency
Rated cooling
condition(°F) (DB/WB) Model
Pressure of gas pipe
connecting indoor
and outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger Fan speed of
indoor unit
Fan speed of
outdoor unit
Compressor
revolution
(Hz)
Indoor Outdoor PSIG T1 (°F) T2 (°F)
81/66 95/75 12K 123.2~145 in:46~52
out:52~57
in:122~176
out:99~109 Suprt High High 58
Rated heating
condition(°F) (DB/WB) Model
Pressure of gas pipe
connecting indoor
and outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger
Fan speed of
indoor unit
Fan speed of
outdoor unit
Compressor
revolution
(Hz)
Indoor Outdoor P (MPa) T1 (°F) T2 (°F)
68/- 45/43 12K 362.3~435 in:122~176
out:99~109
in:34~37
out:36~41 Super High High 56
Instruction:
T1: Inlet and outlet pipe temperature of evaporator
T2: Inlet and outlet pipe temperature of condenser
P: Pressure at the side of big valve
Connection pipe length: 24.6ft.
Cooling:
Heating:
2.5 Noise Curve
18K
18K
46
48
50
52
54
56
58
60
20 30 40 50 60 70 80 90 100
Compressor frequency(Hz)
Noise dB(A)
Heating
Cooling
45
50
35
40
30
20
25
Indoor fan motor rotating speed
Super
High
Super
Low
Middle
High
Middle
Low
High Middle Low
Noise dB(A)
18K
45
50
35
40
30
20
25
Indoor side noise Outdoor side noise
Indoor fan motor rotating speed
Super
High
Super
Low
Middle
High
Middle
Low
High Middle Low
40
42
44
46
48
50
52
54
20 030450607080
Compressor frequency(Hz)
Noise dB(A)
Noise dB(A)
Heating
Cooling
12K

6Technical Information
Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
Unit:inch
3.2 Outdoor Unit
35 3/8
32 3/16
21 59/64 / 19 16/64
13 15/16
12
23 1/2
14 7/8
Unit:inch
38 13/64 8 13/16
11 13/16
2
47
7 13/64
5 1/2
7 1/2
1 1/
21
1/2
Φ2 3/16 Φ2 3/16

7
Technical Information
Service Manual
4. Refrigerant System Diagram
Connection pipe specication:
Liquid : 1/4''(inch)
Gas : 1/2''(inch)
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INDOOR UNIT OUTDOOR UNIT
HEAT
EXCHANGE
(EVAPORATOR)
HEAT
EXCHANGE
(CONDENSER)
COMPRESSOR
GAS SIDE
3-WAY VALVE
LIQUID SIDE
2-WAY VALVE
COOLING
HEATING
Accumlator
Discharge
Suction
4-Way valve
Electron
Strainer Strainer
expansion
valve
Strainer Capillary
D
Strainer
Intercooler