Fujitsu Airstage VR-II ASUA12TLAV User Manual

SERVICE MANUAL
208/230V 60Hz

Fujitsu Airstage VR-II ASUA12TLAV Specifications

General

Category	Air Conditioner
Model	ASUA12TLAV
Heating Capacity	4.0 kW
Energy Efficiency Class (Cooling)	A
Energy Efficiency Class (Heating)	A
Refrigerant	R410A
Outdoor Unit Noise Level	50 dB(A)
Outdoor Unit Dimensions (W x H x D)	900 x 830 x 330 mm
Power Supply	220-240V, 50Hz
Energy Efficiency Ratio (EER)	3.5
Coefficient of Performance (COP)	4.0

Summary

1. TEST RUN

1-1 EXECUTION PROCEDURE AND EXECUTION PRECAUTIONS

Details installation procedures and safety precautions before operation.

1-2 CHECK ITEMS BEFORE POWER ON

Lists essential checks before powering on the unit.

1-3 Check Items After Power ON

Details checks performed after the unit is powered on.

1-4 Test Run Operation

Procedures for conducting test runs of the system.

1-5 TEST RUN CONTROL

Explains control parameters and functions during test runs.

1-6 Field Setting And Monitor Mode List for Outdoor unit

Lists field settings and monitor modes for outdoor units.

1-7 Field Setting / Function Setting for Indoor unit

Configuration and function settings for indoor units.

1-8 Field Setting / Function Setting for Outdoor air unit

Configuration and function settings for outdoor air units.

2. OUTDOOR UNIT OPERATION CONTROL

2-1 REFRIGERANT CIRCUIT

Diagram and explanation of the system's refrigerant circuit.

2-2 INPUT / OUTPUT LIST

Lists all unit inputs and outputs with their control ranges.

2-4 COMPRESSOR OPERATION

Details compressor operation and control.

2-5 HEAT EXCHANGER CAPACITY CONTROL

2-6 FAN CONTROL

2-7 EXPANSION VALVE CONTROL

2-9 PROTECTIVE FUNCTION

3. INDOOR UNIT OPERATION

3-1 FAN CONTROL

3-2 MASTER CONTROL

3-4 ELECTRONIC EXPANSION VALVE CONTROL

4. TROUBLE SHOOTING

4-2 ABNORMAL OPERATION

Diagnosing and resolving abnormal system behavior.

4-2-5 Trouble shooting index - Error code List 1/2 -

4-2-9 TROUBLE SHOOTING WITH ERROR CODE

4-2-10 TROUBLE SHOOTING NO ERROR CODE