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Daikin DX16 Service Manual

Daikin DX16
112 pages
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SERVICE INSTRUCTIONS
DAR09, DAR12, DAT09, DAT12, DX11, DX13, DX14, DX15, DX16
Condensing Units,
DZ11, DZ13, DZ14, DZ16 Split System Heat Pumps
with R-410A Refrigerant
Blowers, Coils, & Accessories
This manual is to be used by qualied, professionally trained
HVAC technicians only. Daikin does not assume any responsi-
bility for property damage or personal injury due to improper
service procedures or services performed by an unqualied
person.
Copyright © 2013-2019 Daikin Manufacturing Company, L.P.
RSD6200006r45
December 2019

Table of Contents

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Daikin DX16 Specifications

General IconGeneral
BrandDaikin
ModelDX16
CategoryAir Conditioner
LanguageEnglish

Summary

SERVICE INSTRUCTIONS

IMPORTANT INFORMATION

IMPORTANT NOTICES FOR CONSUMERS AND SERVICERS

General safety notices and warnings for consumers and service technicians regarding equipment.

WARNING

Critical warnings concerning property damage, personal injury, or death from improper use.

SAFE REFRIGERANT HANDLING

Guidelines and warnings for the safe handling of refrigerants, including ventilation and protective gear.

PRODUCT IDENTIFICATION

LTCOMMERCIAL CONDENSERS

Product identification for Light Commercial Condensers and Heat Pumps, listing models.

SYSTEM OPERATION

COOLING CYCLE OPERATION

Description of the cooling cycle, refrigerants, and indoor coil function.

HEATING CYCLE OPERATION

Description of the heating cycle, reversing valve operation, and coil functions.

DEFROST CYCLE - LEGACY MODELS

Explanation of the defrost cycle control and timing mechanisms.

HIGH VOLTAGE Safety Warning

Warning about high voltage hazards during servicing or installation.

TROUBLESHOOTING CHART

POSSIBLE CAUSE AND SYMPTOMS

Table correlating symptoms, possible causes, and test methods for troubleshooting.

SERVICING

WIRING AND CONTROL CHECKS

Procedures for checking wiring, transformers, contactors, relays, and thermostats.

MOTOR AND BLOWER CHECKS

Procedures for checking capacitors, motor windings, and EEM blower replacement.

COMPRESSOR CHECKS

Procedures for testing compressor resistance, ground faults, unloaders, and rotation.

REVERSING VALVE, DEFROST, AND HEATER CHECKS

Procedures for checking reversing valves, defrost controls, thermostats, and heater components.

REFRIGERATION REPAIR PRACTICES

Guidance on leak testing, evacuation, charging, TXV, superheat, subcooling, and restrictions.

COMPRESSOR BURNOUT AND CLEANING

Procedures for diagnosing compressor burnout and cleaning the system.

DUCT AND COIL STATIC PRESSURE

Methods for measuring duct and coil static pressures for proper airflow diagnosis.

ACCESSORIES WIRING DIAGRAMS

All Fuel System AFE18-60A Control Board Wiring Diagram

Wiring diagram for the AFE18-60A control board used in heat pumps with furnaces.

ELECTRIC HEAT WIRING SCHEMATICS

Typical wiring schematics for OT/EHR18-60 with one-stage and two-stage electric heat.

ASPT**/ASUF** with Electric Heat Wiring

Typical wiring schematics for ASPT/ASUF models with electric heat.

WIRING DIAGRAMS

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