Daikin DX17VSS B Series User Manual

DX17VSS***B* / DZ17VSA***B* Inverter Outdoor Units
with R-410A Refrigerant
Coils, Air Handler & Accessories
Service Instructions
© 2021
SiUS612102E
Only personnel that have been trained to install, adjust, service
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manual should service the equipment. The manufacturer will not
be responsible for any injury or property damage arising from
improper service or service procedures. If you service this unit,
you assume responsibility for any injury or property damage
which may result. In addition, in jurisdictions that require one or
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only licensed personnel should servise the equipment.
Improper installation, adjustment, servicing or repair of the
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without proper training may result in product damage, property
damage, personal injury or death.
WARNING
WARNING
PROP 65 WARNING
FOR CALIFORNIA CONSUMERS
Cancer and Reproductive Harm -
www.P65Warnings.ca.gov
0140M00517-A
SiUS612102E.indb 1 2021/02/17 9:00:02

Daikin DX17VSS B Series Specifications

General

Brand	Daikin
Model	DX17VSS B Series
Category	Heat Pump
Language	English

Summary

Product Identification

Outdoor Unit Nomenclature

Explains the coding system for outdoor unit model numbers.

Indoor Unit Air Handler Nomenclature

Explains the coding system for indoor air handler model numbers.

Indoor Unit Cased Coil Nomenclature

Explains the coding system for indoor cased coil model numbers.

System Operation Overview

Condensing Unit Operation

Describes the function and components of the condensing unit.

Cooling and Heating Cycles

Explains the refrigeration cycle for cooling and heating modes.

Defrost Cycle Operation

Details the process and control of the defrost cycle.

Piping Diagrams

Visual representation of refrigerant flow paths in the system.

Operation Flowcharts

Illustrates cooling and heating operational sequences.

Performance Analysis Charts

Cooling Analysis Chart

Helps diagnose cooling performance issues by correlating symptoms and causes.

Heating Analysis Chart

Helps diagnose heating performance issues by correlating symptoms and causes.

Servicing Procedures

Electrical Checks and Controls

Covers voltage, wiring, transformer, and pressure sensor checks.

Component Testing and Analysis

Details testing methods for compressor, thermistors, and EEV coils.

Refrigerant Handling and Charging

Outlines practices for leak testing, evacuation, and refrigerant charging.

Airflow and Ducting Analysis

Procedures for measuring and analyzing duct static pressure.

Troubleshooting Indoor and Outdoor Units

Indoor Unit Control Board and Displays

Information on the indoor unit control board, displays, and fault recall.

Indoor Unit Error Codes

Lists and explains specific error codes for indoor units.

Outdoor Unit Error Codes

Lists and explains specific error codes for outdoor units.

Network Communication Troubleshooting

Steps for diagnosing and resolving network communication issues.

Emergency Mode Operation

Heating Emergency Mode Setup

Procedure for enabling heating in emergency mode.

Cooling Emergency Mode Setup

Procedure for enabling cooling in emergency mode.

D-Checker Monitoring Tool Addendum

Installing and Configuring D-Checker

Steps for installing and setting up the D-Checker software.

Viewing and Analyzing System Operation Data

Guides on recording, playing back, and analyzing operational data.