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ERQ200A7W1B
Daikin ERQ200A7W1B Service Manual
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ESiEN09-06 A
Service
Manual
ERQ C
onde
nsing
Uni
t Th
ree Pha
se
ERQ 125/200/250 A7W1B
EKEQD/F/MCB(A)V3 (control box)
EKEXV 50/63/80/100/125/140/200/250/400/500
2
Table of Contents
Table of Contents
3
Introduction
7
Safety Cautions
7
Model Names of Outdoor Unit, Control Box and Expansion Valve Kit/Combination Table
11
Model Names of Outdoor Unit, Control Box and Expansion Valve Kit
12
Outdoor Units
12
Control Box
13
Expansion Valve Kit
14
Combination Table
15
Outdoor Units
18
Specifications
18
Refrigerant Circuit/Functional Parts Layout
21
Erq 125 A7W1B
22
Refrigerant Circuit
22
Erq 200 A7W1B
24
Erq 250 A7W1B
26
Erq 125 A7W1B
28
Functional Parts Layout
28
Erq 200 A7W1B
29
Erq 250 A7W1B
30
Table of Contents
31
Function General
32
Symbol
32
Operation Mode
33
Basic Control
34
Normal Operation
34
Compressor PI Control
35
Step Control of Outdoor Unit Fans
37
Outdoor Unit Fan Control in Cooling Operation
38
Special Control
39
Startup Control
39
Oil Return Operation
40
Defrosting Operation
42
Pump-Down Residual Operation
43
Standby
44
Stopping Operation
45
High Pressure Protection Control
46
Protection Control
46
Low Pressure Protection Control
47
Discharge Pipe Protection Control
48
Inverter Protection Control
49
Injection Control (Only for ERQ 125 A7W1B)
50
STD Compressor Overload Protection
50
Emergency Operation (Only for ERQ 250 A7W1B)
51
Other Control
51
Demand Operation
53
Heating Operation Prohibition
53
Outline of Control
54
Thermostat Sensor in Remote Control (Only for Z-Control)
54
Hot Start Control (in Heating Operation Only)
55
Freeze Prevention
56
Low Outdoor Air Temperature Protection Control
57
Table of Contents
59
Different Systems with Their Control Boxes
60
System A: PAIR
60
System B: MULTI
62
W-, X-, Y-, Z-Control
65
W-Control
65
X-Control
67
Y-Control
68
Z-Control
68
D-Box
70
Wiring Diagram of Control Box
70
F-Box
71
Attention Points
72
System A: EKEQF & EKEQD-Box: Installation and Operation Manual
73
Installation and
77
Accessories
78
Before Installation
78
Installation
78
Name and Function of Parts
78
Piping Installation
80
Refrigerant Piping Work
80
Selecting the Installation Site
80
Valve Kit Installation
80
Installation of the Electrical Control Box
82
Electric Wiring Work
83
Installation of Thermistors
86
Operation and Maintenance
87
Test Operation
87
What to Do before Operation
87
Operation and Display Signals
89
Disposal Requirements
90
Maintenance
90
Troubleshooting
90
System B: EKEQM-Box: Installation and Operation Manual
93
Installation and
96
Accessories
97
Before Installation
97
Installation
97
Name and Function of Parts
97
Piping Installation
98
Selecting the Installation Site
98
Valve Kit Installation
100
Electric Wiring Work
101
Installation of the Electrical Control Box
101
Installation of Thermistors
103
Operation and Display Signals
104
Operation and Maintenance
104
Refrigerant Piping Work
104
Test Operation
104
What to Do before Operation
104
Disposal Requirements
105
Maintenance
105
Troubleshooting
105
Table of Contents
106
Installation Process
107
Test Operation
107
Procedure and Outline
108
Operation When Power Is Turned on
121
Outdoor Unit PC Board Layout
122
Field Setting
123
Field Setting from Remote Controller
123
Field Setting
124
Field Setting from Remote Controller
124
Field Setting from Outdoor Unit
132
Field Setting from Outdoor Unit
133
Other manuals for Daikin ERQ200A7W1B
Operation Manual
12 pages
Installation Manual
28 pages
4
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Daikin ERQ200A7W1B Specifications
General
Category
Heat Pump
Model
ERQ200A7W1B
Cooling Capacity
20.0 kW
Heating Capacity
22.4 kW
Refrigerant
R-32
Power Supply
400V, 3-phase, 50Hz
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