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AOU18CL
Fujitsu AOU18CL Service Manual
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REFRIGERANT SYSTEM DIAGRAM
2-Way
valve
Strainer
Strainer
3-Way
valve
Muffler
Muffler
4-Way valve
Expansion valve
Heat exchanger
( INDOOR )
Heat exchanger
( OUTDOOR )
AOU9RLQ
(2Pass)
AOU12RLQ
(4Pass)
Compressor
Cooling
Heating
ASU12RLQ / AOU12RLQ
Models : ASU9RLQ / AOU9RLQ
03-01
10
12
Table of Contents
Default Chapter
1
Wall Mounted
1
Table of Contents
2
Specification
4
Wall Mounted Type
4
Specifications
5
Model Name
6
Dimensions
7
Asu9/12Rlq, Aou9/12Rlq
8
Asu18C/Rl, Aou18C/Rl
9
Refrigerant System Diagram
10
Asu18C/Rl, Aou18C/Rl
12
Circuit Diagram
13
Asu18C/Rl, Aou18C/Rl
15
Indoor Unit
15
Description of each Control Operation
16
Cooling Operation
17
Heating Operation
18
Dry Operation
19
Auto Changeover Operation
20
Indoor Fan Control
21
Outdoor Fan Control
23
Louver Control
24
Compressor Control
25
Timer Operation Control
26
Electronic Expansion Valve Control
28
Test Operation Control
28
Prevent to Restart for 3 Minutes ( 3 Minutes St )
28
Four-Way Valve Extension Select
28
Auto Restart
28
MANUAL AUTO OPERATION ( Indoor Unit Body Operation )
29
Compressor Preheating
29
Coil Dry Opeartion Control
29
Defrost Operation Control
30
Off Defrost Operation Control
32
Various Protections
33
Refrigerant Caution -R410A
35
R410A Tools
36
Tools and Equipment R410A
36
Precaution for Installation
37
Refrigerant Charge
38
Precaution for Servicing
39
New Refrigerant R410A
40
Defference from Conventional Model(R22) and Precautions
43
Trouble Shooting
44
When the Unit Does Not Operate at All
44
Self Diagnosis Function
46
Self-Diagnosis Function and Checking Points
47
Serial Signal Diagnosis
47
Ipm Protection
52
Trouble Shooting of Refrigerant Cycle
53
Appending Data
54
Jumper Setting of Indoor Unit and Outdoor Unit
54
Outdoor Unit Pressure Value and Total Electric Current Curve
54
Capacity/Input Data
54
Outdoor Unit High Pressure Value
59
Thermistor Resistance Values
60
Replacement Parts
67
Installation Manual
78
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Fujitsu AOU18CL Specifications
General
Brand
Fujitsu
Model
AOU18CL
Category
Air Conditioner
Language
English
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