Fujitsu UTY-VDGX User Manual

SERVICE MANUAL

Fujitsu UTY-VDGX Specifications

General

Brand	Fujitsu
Model	UTY-VDGX
Category	Air Conditioner
Language	English

Summary

FUJITSU AIRSTAGE J-III L Service Manual

1. Test Run Procedures

1-1 Execution Procedure and Precautions

Details procedures and precautions for test run execution.

1-2 Test Run Method

Outlines methods for conducting test runs.

1-2-1 Check Items Before Power ON

Lists essential checks before powering on the unit.

1-2-2 Check Items After Power ON

Lists checks to perform after powering on the unit.

1-2-3 Automatic Address Setting for Signal Amplifiers

Describes the automatic address setting procedure for signal amplifiers.

1-2-4 Automatic Address Setting for Indoor Units

Details the automatic address setting procedure for indoor units.

1-2-5 Indoor Unit Connection Check

Explains how to check indoor unit connections.

1-2-6 Test Run from Outdoor Main PCB

Procedure for performing test runs using the outdoor main PCB.

1-2-7 Test Run from Remote Controller

Details test run procedures using various remote controllers.

1-3 Test Run Control

Covers control aspects and parameters during test runs.

1-4 Field Setting and Monitor Mode for Outdoor Unit

Lists field settings and monitor modes for outdoor units.

1-5 Field Setting for Indoor Unit

Outlines field and function settings for indoor units.

1-6 Field Setting for Outdoor Air Unit

Details field and function settings for outdoor air units.

2. Outdoor Unit Operation Control

2-1 Input / Output List

Lists input/output details and control ranges for the outdoor unit.

2-2 Compressor Operation

Covers compressor operation: conditions, capacity, and speed ranges.

2-3 Fan Control

Describes fan control for the outdoor unit, including cooling and heating operations.

2-4 Expansion Valve Control

Explains the control mechanisms for expansion valves.

2-5 Special Operation

Details special operational modes like oil recovery and defrost.

2-6 Protective Function

4. Troubleshooting Guide

4-1 Normal Operation Displays

4-2 Abnormal Operation Error Codes

4-2-3 Error Code List for Outdoor Unit

4-2-4 Remote Controller Display Errors

4-2-5 Error Code List for Simple and Wired Remote Controllers

4-2-7 Troubleshooting Without Error Codes

4-2-12 Troubleshooting With Error Code (Indoor Unit)

4-3 Troubleshooting With Error Code (Outdoor Unit)

4-3-3 Troubleshooting With No Error Code

4-3-4 Trouble Shooting for Optional Parts

4-4 Service Parts Information