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Daikin DC97MC - User Manual

Daikin DC97MC
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Modulating Gas Furnaces, up to 98% AFUE
34.5" Chassis DM97MC, DC97MC
& Accessories
RSD6612009r5
September 2016
This manual is to be used by qualified, professionally trained HVAC technicians only. Daikin does not
assume any responsibility for property damage or personal injury due to improper service
procedures or services performed by an unqualified person.
Copyright © 2014-2016
Service Instructions

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Questions and Answers

  • H
    hernandeztracyAug 6, 2025
    What to do if the receive LED is solid green on my Daikin Furnace?
    • D
      Debra TrujilloAug 6, 2025
      If the receive LED on your Daikin Furnace is solid green, it might be due to a short between the data 1 and data 2 wires. In this case, you should check the data 1 and data 2 voltages.
  • E
    etranAug 20, 2025
    Why is the receive LED on my Daikin Furnace solid green?
    • L
      Lauren BrownAug 20, 2025
      If the receive LED on your Daikin Furnace is solid green, it could be because the data 1 and data 2 wires are reversed at the furnace, thermostat, or communicating compatible outdoor AC/HP. To resolve this, check the wire connections at the terminal block.

Summary

Service Instructions

IMPORTANT INFORMATION

PRODUCT IDENTIFICATION

ACCESSORIES

LIGHTING INSTRUCTIONS

OPERATING INSTRUCTIONS

Step-by-step guide for safe operation of the appliance.

PRODUCT DESIGN

CLEARANCES AND ACCESSIBILITY

Minimum required distances from combustible materials for safe installation.

OPERATION

115 VOLT LINE CONNECTIONS

Procedure for connecting the furnace to the main power supply.

24 VOLT THERMOSTAT WIRING

Instructions for connecting the thermostat to the furnace control.

DIP SWITCHES

Configuration settings for furnace operation modes and features.

SERVICE & OPERATION

USING THE EMERSON ULTRACHECK-EZ DIAGNOSTIC TOOL

Guide for testing the ECM motor using a specific diagnostic tool.

OPERATIONAL CHECKS

BURNER FLAME

Inspection criteria for stable, quiet, soft, and blue burner flames.

MAINTENANCE

Troubleshooting

Guidance for diagnosing and resolving unit operational problems.

SERVICING

CHECKING VOLTAGE

Procedure for measuring electrical voltage at various points.

CHECKING GAS PRESSURE

Steps to measure and verify inlet and manifold gas pressures.

Troubleshooting

Symptoms of Abnormal Operation

Correlation between LED codes and abnormal furnace behavior.

Daikin DC97MC Specifications

General IconGeneral
StagesModulating
Heating Capacity60, 000 - 120, 000 BTU/h
Fuel TypeGas
Blower Motor TypeECM
Warranty12-year limited warranty on heat exchanger

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