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1U50S2SJ2FA
Haier 1U50S2SJ2FA User Manual
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Performance
and
curves
diagrams
Domestic
air
conditioner
11.4
Cooling
suction
pressure
curves
51
outdoor temp.
(humidity 46%)
DB/WB
21/15
27/19
35/24
10
9
2
0
1
6
8
8
7
5
7
15
0
4
0
1
5
9
8
5
6
7
20
0
5
0
1
3
1
9
2
7
7
25
2
7
0
1
2
2
9
3
1
8
30
2
8
0
1
1
7
9
6
5
8
35
9
3
1
1
1
8
9
4
6
8
38
910
1011
1163
40
1001
1112
1279
43
1101
1201
1394
indoor temp.
performance curves
cooling suction pressure.table
suction
pressure
(Kpa)
cooli
ng
sucti
on
pressure
and
tem
p
curves
51
53
Table of Contents
Table of Contents
2
Introduction
3
Model Name Explanation
3
Caution in Repair
4
Safety Cautions
4
Cautions Regarding Products after Repair
5
Inspection after Repair
7
Using Icons
7
Using Icons List
8
Specifications
9
Sensors List
10
Piping Diagrams
11
Operation Range
12
Printed Circuit Board Connector Wiring Diagram
13
Wiring Diagrams
16
Functions and Control
17
The Calculation of the Compressor’s Frequency
17
The Operation Frequency of Outdoor Unit and Its Control
17
The Starting of Compressor
17
The Control of the Outdoor Electronic Expansion Valve (EEV)
19
The Outdoor Fan Control (Exchange Fan)
19
Four Way Control
20
Protection Function
20
TC High Temperature-Preventing Control of the Indoor Heating Unit
20
TTC High Temperature-Preventing Protection
20
The Control of Preventing the over Current of the Compressor
21
The Protection Function of AC Current
21
Anti-Freezing Protection of the Indoor Heat Exchanger
22
The Frequency Limitation of Modification Rate
22
Ambient Sensor, Defrosting Sensor, Pipe Sensor
23
Temperature Protection of the Outdoor Refrigerating Coil
23
Value of Thermistor
23
Discharging Sensor
26
Center of Gravity
31
Dimensional Drawings
31
Parameter of Primary Electronic Appliance
32
Service Diagnosis
32
Problem Symptoms and Measures
33
Error Codes and Description Indoor Display
34
Thermistor or Related Abnormality
35
EEPROM Abnormal
36
Indoor AC Fan Motor Malfunction
37
Outdoor DC Fan Motor Fault
38
IPM Protection
40
Over-Current of the Compressor
41
The Communication Fault between IPM and Outdoor PCB
42
Power Supply over or under Voltage Fault
43
Overheat Protection for Discharge Temperature
44
The Communication Fault between Indoor and Outdoor
45
Inverter Side Current Detection Is Abnormal
47
Loss of Synchronism Detection
47
High Work-Intense Protection
48
Cooling Capacity-Temperature Curves
49
Performence and Curves Diagrams
49
Cooling Power Consumption Value- Temperature Curves
50
Performance and Curves Diagrams
50
Cooling Discharge Pressure Curves
51
Cooling Suction Pressure Curves
52
Heating Capacity-Temperature Curves
53
Heating Power Consumption Value- Temperature Curves
54
Heating Discharge Pressure Curves
55
Heating Suction Pressure Curves
56
Circuit Diagrams
57
Removal Procedure
61
Remove of Front Panel
62
Remove the Air Filters and Horizontal Flap
65
Remove the Casing
66
Release Stepping Motor (2 Type)
68
Removal of Heat Exchanger
69
4
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Haier 1U50S2SJ2FA Specifications
General
Brand
Haier
Model
1U50S2SJ2FA
Category
Air Conditioner
Language
English
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