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General| Brand | Fujitsu |
|---|---|
| Model | Airstage VR-II AUUA24TLAV |
| Category | Air Conditioner |
| Language | English |
List of critical checks to perform on the system before initial power-up.
Procedures and guidelines for inspecting the refrigerant charge amount.
Checks to be performed after the system has been powered on.
Procedure for checking and identifying error indications on unit displays.
Guidance on performing test runs to verify system functionality.
Instructions for initiating a test run using the outdoor unit's PC board controls.
Procedure for performing test runs using the touch panel controller interface.
Steps for conducting test runs using the central remote controller.
Instructions for performing test runs using the 2-wire remote controller.
Overview of controls and parameters for managing test run operations.
Diagram and description of the refrigerant circuit for the outdoor unit.
Details on controlling heat recovery operation modes and heat balance.
Explanation of compressor operation modes, speed, and capacity control.
Methods for controlling heat exchanger capacity based on operation modes.
Information on the control and operation range of electronic expansion valves.
Conditions and procedures for controlling defrost operations.
Overview of various protective functions and their operational parameters.
Details on discharge temperature protection mechanisms and responses.
Explanation of high-pressure protection functions and their control ranges.
Details on low-pressure protection functions and their control ranges.
Controls for indoor unit fan speed settings and auto mode.
Master control functions for operation modes and system management.
Control mechanisms for electronic expansion valves.
Guidance for identifying and diagnosing abnormal system operations.
Explanation of error code structure and display methods.
Comprehensive index of error codes and their corresponding troubleshooting steps.
Step-by-step troubleshooting guides for specific error codes.
Troubleshooting and replacement information for compressors.
Technical details for inverter compressor inspection and replacement.
Checks and procedures for indoor EEVs, including coil resistance and voltage.
Inspection and troubleshooting for outdoor EEV1, including coil resistance.
Inspection and troubleshooting for outdoor EEV2, including coil resistance.
Inspection and troubleshooting for outdoor EEV3, including coil resistance.
Checks for solenoid valves (SV1-SV4), including coil resistance and voltage.
Inspection procedures for the 4-way valve, including coil and voltage checks.
Procedure for safely removing the compressor, including precautions.
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