Fujitsu UTP-VX90A - User Manual

SERVICE MANUAL

Fujitsu UTP-VX90A Specifications

General

Brand	Fujitsu
Model	UTP-VX90A
Category	Air Conditioner
Language	English

Summary

1. TEST RUN

1-1 EXECUTION PROCEDURE AND EXECUTION PRECAUTIONS

Details procedures and precautions before executing test runs.

1-2 TEST RUN METHOD

Outlines the methods for conducting test runs.

1-3 TEST RUN CONTROL

Describes how to control test run operations.

2. OUTDOOR UNIT OPERATION CONTROL

2-2 COMPRESSOR OPERATION

Explains compressor operation and capacity control.

2-6 PROTECTIVE FUNCTION

Lists protective functions and their operating conditions.

4. TROUBLE SHOOTING

4-2 ABNORMAL OPERATION

Details indoor and outdoor unit abnormal displays and error codes.

4-3 TROUBLE SHOOTING

Troubleshooting steps for specific error codes and conditions.

5. APPENDING DATA

5-1 REFRIGERANT CIRCUIT

Shows the refrigerant circuit diagram for outdoor units.

5-2 WIRING DIAGRAM

Provides wiring diagrams for indoor and outdoor units.

6. DISASSEMBLY PROCESS

3. MAIN PCB removal

Steps for removing the main PCB.

5. INVERTER PCB, FILTER PCB, DIODE BRIDGE and POWER PCB removal

Instructions for removing power, inverter, filter PCBs, and diode bridge.

6. FAN DRIVER PCB and INVERTER CT PCB removal ( For AJY108 LELAH )

7. PRESSURE SENSOR, SOLENOID COIL removal

10. FAN MOTOR removal

15. COMPRESSOR removal

Detailed procedure for removing the compressor, including precautions.

16. Precautions for exchange of refrigerant-cycle-parts