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Daikin DZ16 User Manual

Daikin DZ16
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1
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 DZ16 Specifications

General IconGeneral
RefrigerantR-410A
Voltage208/230V
Cooling Capacity (BTU/h)18, 000 - 60, 000
Dimensions (Indoor Unit)Varies by model
Dimensions (Outdoor Unit)Varies by model
Weight (Indoor Unit)Varies by model
Weight (Outdoor Unit)Varies by model
TypeAir Conditioner
Cooling Capacity1.5 - 5 Tons
Energy EfficiencyHigh
PhaseSingle
Indoor Unit Noise Level19-45 dB
Outdoor Unit Noise Level54-75 dB

Summary

SERVICE INSTRUCTIONS

IMPORTANT INFORMATION

SAFE REFRIGERANT HANDLING

Guidelines for safely handling refrigerants, including precautions for pressure, temperature, and personal protection.

IMPORTANT NOTICES FOR CONSUMERS AND SERVICERS

RECOGNIZE SAFETY SYMBOLS, WORDS AND LABELS

Identify and understand safety symbols, words, and labels used in the manual and on the equipment for safe operation.

PRODUCT IDENTIFICATION

AIR HANDLERS

Explains product identification coding for air handler models, including unit application and features.

MODELS

Details product identification coding for various condenser models, covering type, SEER, and tonnage.

DX13SA*

Provides product identification and revision details for DX13SA condenser units.

ACCESSORIES

PRODUCT DESIGN

SYSTEM OPERATION

COOLING

Describes the refrigerant cycle and operation during cooling mode.

DEFROST CYCLE - LEGACY MODELS

Explains the defrost cycle control and operation for legacy models.

HEATING

Explains the refrigerant cycle reversal for heating operation.

HEATING CYCLE

Describes the system operation during heating mode.

COOLING CYCLE

Details the step-by-step process of the cooling cycle.

TROUBLESHOOTING CHART

SERVICING

S-1 CHECKING VOLTAGE

Procedure for checking system voltage and locked rotor voltage.

S-11 CHECKING LOSS OF CHARGE PROTECTOR (Heat Pump Models)

Checks the loss of charge protector for proper function.

DIAGNOSTICS TABLE: CORESENSE™ MODULE

Table detailing CoreSense module flash codes and troubleshooting.

Table 1 - Quick Reference Table

A quick reference table for alert codes and conditions.

S-15 CHECKING CAPACITOR, RUN

Procedure for checking run capacitors for proper function.

S-16B CAPACITANCE CHECK USING A DIGITAL MULTI-METER (IN CAPACITANCE MODE)

Checks capacitor value using a multi-meter's capacitance function.

S-17B GROUND TEST

Checks for ground faults in the compressor circuit.

S-18D OPERATION TEST

Tests system operation after component checks.

S-21 CHECKING REVERSING VALVE AND SOLENOID

Tests the reversing valve and solenoid for proper operation.

S-101 LEAK TESTING (NITROGEN OR NITROGEN-TRACED)

Procedure for leak testing using nitrogen or nitrogen-traced gas.

S-103 CHARGING

Procedure for charging the system with refrigerant.

S-106 OVERFEEDING

Troubleshooting and identifying refrigerant overfeeding.

S-109 CHECKING SUBCOOLING

Explains how to check and adjust subcooling.

S-112 CHECKING RESTRICTED LIQUID LINE

Troubleshoots a restricted liquid line and its effects.

S-2 CHECKING WIRING

Steps for visually inspecting and testing wiring for continuity.

S-7 CHECKING CONTACTOR AND/OR RELAYS

Procedure for testing contactor and relay coils for continuity.

S-12 CHECKING HIGH PRESSURE CONTROL

Tests the high pressure control for proper cut-out setting.

S-16 CHECKING FAN AND BLOWER MOTOR WINDINGS (PSC MOTORS)

Tests fan and blower motor windings for continuity.

s-17 CHECKING COMPRESSOR

Provides safety warnings and guidelines for checking the compressor.

S-17C UNLOADER TEST PROCEDURE

Procedure for testing the compressor unloader solenoid.

S-18E CHECKING 3-PHASE SCROLL COMPRESSOR ROTATION

Verifies proper rotation of 3-phase scroll compressors.

S-24 TESTING DEFROST CONTROL LEGACY MODELS

Tests the defrost control sequencing.

S-102 EVACUATION

Steps for properly evacuating the system to remove air and moisture.

S-105B THERMOSTATIC EXPANSION VALVE

Describes the operation of thermostatic expansion valves.

S-107 UNDERFEEDING

Troubleshooting and identifying refrigerant underfeeding.

S-113 OVERCHARGE OF REFRIGERANT

Identifies symptoms and checks for refrigerant overcharge.

S-3A Thermostat and Wiring

Checks thermostat and wiring for proper cooling/heating signals.

S-8 CHECKING CONTACTOR CONTACTS

Tests the continuity of contactor contacts under load.

S-13 CHECKING LOW PRESSURE CONTROL

Tests the low pressure control for proper cut-out setting.

S-15A RESISTANCE CHECK USING A DIGITAL MULTI-METER

Tests capacitor resistance using a digital multi-meter.

S-16A CHECKING HIGH EFFICIENCY MOTORS

Checks high efficiency (EEM) motors for proper operation.

S-17A RESISTANCE TEST

Tests compressor motor windings resistance.

S-25 TESTING DEFROST THERMOSTAT

Tests the defrost thermostat for proper temperature settings.

S-100 REFRIGERATION REPAIR PRACTICE

General practices for repairing refrigeration systems safely.

S-108 SUPERHEAT

Explains how to check and adjust superheat.

S-110 CHECKING EXPANSION VALVE OPERATION

Tests the expansion valve for proper operation.

S-114 NON-CONDENSABLES

Diagnoses and addresses non-condensables in the system.

SUPERHEAT AND SUBCOOLING ADJUSTMENT ON TXV APPLICATIONS

Adjusting superheat and subcooling for TXV systems.

S-115 COMPRESSOR BURNOUT

Diagnoses compressor burnout and related issues.

ACCESSORIES WIRING DIAGRAMS

WIRING DIAGRAMS

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