Daikin VRV Water Cooled Heat Pump / Heat Recovery (RWEYQ8–30) Service Manual – PDF

Description

Daikin VRV Water Cooled Heat Pump / Heat Recovery (RWEYQ8–30) Service Manual – PDF Download

Description

This is the official Daikin VRV Water-Cooled System Service Manual covering both Heat Pump and Heat Recovery configurations operating on R-410A, 50/60Hz.
Models covered include RWEYQ8–30 series units and their sub-variants.

This manual provides complete technical servicing procedures including system layout, refrigerant circuit operation, test mode settings, component diagnostics, and full troubleshooting workflows.

Covers: Water-cooled VRV outdoor units, indoor units, BS units, remote controllers, and full field commissioning configuration.

Contents Overview

Part 1 – General Information

• Model compatibility & system configuration

• Indoor and outdoor unit identification

• Multi-outdoor-unit connection combinations

• Capacity range and selection rules

Part 2 – Refrigerant Circuit

• Full refrigerant flow diagrams (Cooling / Heating / Heat Recovery)

• System oil return operation

• Component functional mapping

• Water heat exchanger cycle logic

Part 3 – Remote Controllers

• Wired and wireless remote operation

• Service mode access

• Diagnostic display functions

Part 4 – Function & Control

• Compressor control logic

• Electronic expansion valve operation

• Heat exchange mode logic

• Oil return, pump-down, standby & inverter protection

Part 5 – Test Operation

• Field commissioning procedures

• Remote controller settings

• PCB DIP switch configuration

Part 6 – Service Diagnosis

• Full error code list & meanings

• Step-by-step troubleshooting by symptom

• PCB fault isolation

• Sensor fault detection sequences

Part 7 – Switch Box Disassembly

• Board & module replacement procedures

Part 8 – Appendix

• Piping diagrams

• Wiring diagrams (Indoor, Outdoor, BS units)

• R-410A refrigerant handling precautions

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