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ASU18RLF
Fujitsu ASU18RLF Service Manual
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Test 1 : Check the voltage from Main PCB
02-53
With the connector connected to the Main PCB,
measure the voltage between CN 92 : 1 - 2 of the Main PCB
CN92
PS
Discharge pressure sensor
Characteristics of pressure sensor
4.5
5.0
0.5
0
Output [DCV]
Pressure [MPa]
1
RED
WHITE
BLACK
+
-
3
2
SERVICE PARTS INFORMATION 4
Discharge pressure sensor
92
94
Table of Contents
Table of Contents
2
Description of each Control Operation
3
Capacity Control
4
Auto Changeover Operation
4
Indoor Fan Control
6
Louver Control
14
Outdoor Fan Control
18
Compressor Control
18
Timer Operation Control
19
Wireless Remote Controller
19
Wired Remote Controller
21
Electronic Expansion Valve Control
22
Test Operation Control
22
Prevent to Restart for 3 Minutes ( 3 Minutes St )
22
Way Valve Extension Select
22
Auto Restart
23
Manual Auto Operation
23
Compressor Preheating
24
POWERFUL OPERATION ( for ASU*RLF1/ AGU*RLF Type )
24
Minimum Heat Operation
24
Economy Operation
24
Heat Insulation Condition ( Building Insulation )
25
Thermo Control ( for Indoor Unit Sensor )
25
Thermo Control ( for Wirede Remote Sensor )
25
Base Heater Operation ( for Aou36Rlxfzh )
26
FRESH AIR CONTROL ( for AU Type )
26
EXTERNAL ELECTRICAL HEATER CONTROL ( for AR Type )
26
DRAIN PUMP OPERATION ( for AU / AR Type )
27
AIR OUTLET SELECTION ( DAMPER CONTROL )( for AG Type )
28
Defrost Operation Control
29
Check Run Operation (Automatic Wiring Correction)
31
Various Protections
35
Pump down Operation
37
Test Run ( Outdoor Unit )
37
Trouble Shooting
39
Error Display
40
Indoor Unit and Wired Remote Controller Display
40
Simple Remote Controller Display
42
Central Remote Controller Display
42
Outdoor Unit Display
42
Table of Contents
44
Serial Communication Error 1
45
Trouble Shooting with Error Code
45
Controller and Outdoor Unit
48
Indoor Unit Capacity Error
49
Indoor Unit Error
49
EEPROM Access Error
60
EEPROM Data Corruption Error
61
Inverter Error
62
IPM Error (Trip Terminal L Error)
64
Trouble Shooting with no Error Code
80
Service Parts Information
89
Other manuals for Fujitsu ASU18RLF
Service Manual
66 pages
Design & Technical Manual
319 pages
Service Instruction
105 pages
Service Bulletin
3 pages
5
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Fujitsu ASU18RLF Specifications
General
Brand
Fujitsu
Model
ASU18RLF
Category
Air Conditioner
Language
English
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