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Fujitsu AOU18RLB Service Manual

Fujitsu AOU18RLB
71 pages
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SPLIT TYPE
ROOM AIR CONDITIONER
WALL MOUNTED
type
Models Indoor unit Outdoor unit
INVERTER
SERVICE
INSTRUCTION
R410A
ASU18RLB
ASU24RLB
AOU18RLB
AOU24RLB

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Fujitsu AOU18RLB Specifications

General IconGeneral
RefrigerantR410A
Power Supply220-240 V, 50 Hz
Weight (Outdoor Unit)36 kg
Cooling Capacity5.0 kW
TypeSplit System

Summary

DESCRIPTION OF EACH CONTROL OPERATION

25. VARIOUS PROTECTIONS

Covers various protection controls like discharge gas temperature, current release, and antifreeze.

TROUBLE SHOOTING

2-1 ERROR DISPLAY

Lists error codes and corresponding indicator lamp patterns for indoor and remote units.

2-2 TROUBLE SHOOTING WITH ERROR CODE

Provides detailed troubleshooting steps for specific error codes detected by the system.

2-3 TROUBLE SHOOTING WITH NO ERROR CODE

Offers guidance for troubleshooting issues without specific error codes displayed.

Outdoor Unit Main PCB Error

Steps to diagnose and resolve errors originating from the outdoor unit's main PCB.

IPM Error

Diagnosing and resolving errors associated with the Intelligent Power Module (IPM).

Current Sensor Error

Steps to resolve errors related to the input current sensor in the outdoor unit.

Compressor Motor Control Error

Diagnosing errors in the compressor motor control, such as phase issues or repeated stops.

Discharge Temperature Error

Troubleshooting for errors related to excessive discharge temperature in the compressor.

Indoor Unit - No Power

Guides on troubleshooting when the indoor unit does not receive power.

Outdoor Unit - No Power

Troubleshooting steps for when the outdoor unit does not receive power.

No Operation (Power is ON)

Steps to diagnose why the unit is not operating despite having power.

No Cooling / No Heating

Comprehensive troubleshooting for when the unit fails to cool or heat.

Abnormal Noise

Diagnosing the cause of abnormal noises originating from the indoor or outdoor units.

Water Leaking

Troubleshooting steps for water leaks from the unit, including drain hose issues.

Too Warm

Steps to address situations where the room is too warm, involving function settings and sensor checks.

Too Cool

Troubleshooting for situations where the room is too cool, focusing on function settings and sensor checks.

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