Piping diagram ................................................................................................................................................................ 401

6.3.1

Piping diagram: Outdoor unit......................................................................................................................... 401

6.3.2

Refrigerant flow diagram: Outdoor unit ........................................................................................................ 407

6.3.3

Piping diagram: Branch selector unit ............................................................................................................. 432

6.4

Component overview...................................................................................................................................................... 441

6.4.1

Component overview: REMQ5U + REYQ8~12U units ................................................................................... 441

6.4.2

Component overview: REYQ14~20U units .................................................................................................... 443

6.5

Switchbox overview ........................................................................................................................................................ 445

6.5.1

Single fan units ............................................................................................................................................... 445

6.5.2

Double fan units ............................................................................................................................................. 446

6.5.3

Branch selector box........................................................................................................................................ 447

6.6

Safety devices.................................................................................................................................................................. 449

6.7

Field information report ................................................................................................................................................. 451

6.8

Service tools .................................................................................................................................................................... 454

6.9

Field settings ................................................................................................................................................................... 455

6.9.1

To access mode 1 or 2.................................................................................................................................... 455

6.9.2

To use mode 1 ................................................................................................................................................ 455

6.9.3

To use mode 2 ................................................................................................................................................ 456

6.9.4

Mode 1: Field settings .................................................................................................................................... 458

6.9.5

Mode 2: Field settings .................................................................................................................................... 461

6.9.6

Overview of field settings for indoor units .................................................................................................... 466

6.9.7

Field settings as per type of indoor unit ........................................................................................................ 471

Table of contents

Service manual