Fujitsu Airstage VR-II AOUA72TLBV User Manual

SERVICE MANUAL
208/230V 60Hz

Fujitsu Airstage VR-II AOUA72TLBV Specifications

General

Brand	Fujitsu
Model	Airstage VR-II AOUA72TLBV
Category	Air Conditioner
Language	English

Summary

1. TEST RUN Procedures and Checks

1-2 Pre-Power On Inspection Checklist

Details critical checks to perform on the system before applying power.

1-3 Post-Power On System Checks

Verifies system status and error indications after power is applied.

1-4 Test Run Operations

Procedures for performing test runs using PC board buttons or remote controllers.

1-5 Test Run Control Parameters

Explains how test run signals affect EEV control and operation modes.

1-6 Outdoor Unit Field Setting and Monitor Modes

Lists available settings and monitor modes accessible via the outdoor unit PCB switches.

1-7 Indoor Unit Field Setting and Function Configuration

Details settings for indoor units via remote controller, including address, airflow, and static pressure.

1-8 Outdoor Air Unit Field Setting and Function Configuration

Covers settings for outdoor air units, including address, filter, airflow, and temperature triggers.

2. OUTDOOR UNIT OPERATION CONTROL

2-1 Refrigerant Circuit Diagrams

2-2 System Input and Output Signal List

2-4 Compressor Operation Logic

2-5 Heat Exchanger Capacity Control

2-6 FAN CONTROL

2-7 EXPANSION VALVE CONTROL

2-8 SPECIAL OPERATION MODES

2-9 PROTECTIVE FUNCTIONS

Lists and explains various protective functions to prevent system damage from abnormal conditions.

3. INDOOR UNIT OPERATION

3-1 FAN CONTROL

3-2 MASTER CONTROL

3-4 ELECTRONIC EXPANSION VALVE CONTROL

3-5 DRAIN PUMP OPERATION

3-6 UNIT FUNCTIONS

4. TROUBLE SHOOTING

4-2 Abnormal Operation and Error Handling

Covers error code display formats, interpretation, troubleshooting indexes, system levels, and history.