Daikin RXS25L3V1B User Manual

Service
Manual
Inverter Pair
Floor / Ceiling Suspended Dual Type
FLK(X)S-BA Series
SiBE05-722EE
[Applicable Models]
O
Inverter Pair: Cooling Only
O Inverter Pair: Heat Pump

Daikin RXS25L3V1B Specifications

General

Cooling Capacity	2.5 kW
Heating Capacity	3.2 kW
Energy Efficiency Ratio (EER)	3.21
Seasonal Energy Efficiency Ratio (SEER)	6.1
Refrigerant	R32
Outdoor Unit Dimensions (W x H x D)	780 x 540 x 285 mm
Weight (Indoor Unit)	8.5 kg
Energy Efficiency Class (Cooling)	A++
Energy Efficiency Class (Heating)	A+
Outdoor Unit Noise Level	50 dB
Power Supply	220-240 V, 50 Hz
Indoor Unit Noise Level	19 dB

Summary

Part 1 List of Functions

1. Functions

Lists all available functions for the air conditioning units.

Part 2 Specifications

1.1 Cooling Only

Details technical specifications specifically for cooling-only models.

1.2 Heat Pump

Details technical specifications specifically for heat pump models.

Part 3 Printed Circuit Board Connector Wiring Diagram

1. Indoor Unit

Diagrams showing PCB connectors and their functions for indoor units.

2. Outdoor Unit

Diagrams showing PCB connectors and their functions for outdoor units.

Part 4 Functions and Control

1. Main Functions

Explains core operational functions like temperature and airflow control.

2. Thermistor Functions

Details the role of thermistors in system control and operation.

3. Control Specification

Outlines the system's control logic, including mode hierarchy and frequency control.

Part 5 Remote Controller

1. Remote Controller

Explains the operation and features of the remote controller for unit adjustment.

Part 6 Service Diagnosis

1. General Problem Symptoms and Check Items

Provides a guide for identifying common issues and initial checks.

2. Troubleshooting with LED

Explains how to use unit LEDs for diagnosing operational faults.

3. Service Diagnosis

Describes methods for diagnosing system errors using the remote controller.

4. Troubleshooting

Details specific error codes, their causes, and troubleshooting procedures.

5. Check

Provides step-by-step checks for components like thermistors and PCBs.

Part 7 Trial Operation and Field Settings

1. Tips for Servicing

Offers essential advice for servicing, including pump-down operations.

2. Trial Operation

Guides through the process of verifying unit functionality after installation.

3. Field Settings

Covers adjustments for specific installation scenarios like multiple units or low temperatures.

4. Silicone Grease on Power Transistor / Diode Bridge

Explains the correct application of silicone grease for heat dissipation on PCBs.

Part 8 Appendix

1. Piping Diagrams

Visual representations of refrigerant flow and component connections.

2. Wiring Diagrams

Electrical schematics illustrating the unit's internal wiring and connections.