Daikin D2CND024A4AA - User Manual

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Operation manual

Wall-mounted condensing boiler

English

Operation manual

Wall-mounted condensing boiler

D2CND024A1AA

D2CND024A4AA 

        

   

D2TND012A4AA

D2TND018A4AA

D2TND024A4AA

Table of Contents

Other manuals for Daikin D2CND024A4AA

Servicing Manual44 pages

Questions and Answers

S
Samantha GoodmanAug 25, 2025
Why is my Daikin Boiler ignition not taking place?
- L
  Linda FieldsAug 26, 2025
  If the ignition is not taking place in your Daikin Boiler, it might be due to a blockage error. Here's what you should check: * Inlet gas pressure. * Ensure the main gas valve is open. * Ignition and ionization electrodes. * Ignition transformer. * Gas valve. * Wire harness. Replace any defective parts. Also, check if the condensate trap is blocked or if the flue duct is installed correctly.
E
erobertsAug 26, 2025
What to do if my Daikin D2CND024A4AA Boiler shows a fan speed error?
- J
  James YorkAug 27, 2025
  If your Daikin Boiler is showing a fan speed error, first reset the boiler if necessary. Then: * Check the connection between the silencer and the fan, making sure that the fan suction isn't blocked. * Inspect the fan and its cable connections for any interruptions or shorts, and replace any defective components. If the error persists, consider replacing the PCB.
J
Jennifer WilliamsAug 27, 2025
What to do if my Daikin D2CND024A4AA has a flame loss during operation?
- M
  melissa79Aug 27, 2025
  If your Daikin Boiler experiences flame loss during operation, it might be caused by a blockage error. Here's what to check: * Check the ionization electrode. * Check the gas valve. * Check the wire harness. Replace any defective parts. Also, check if the condensate trap is blocked and ensure the flue duct is correctly installed. If the problem continues, activate calibration.
M
Michael ZunigaAug 27, 2025
What to do if my Daikin D2CND024A4AA Boiler return temperature sensor is fault?
- N
  Nicole SmithAug 28, 2025
  If your Daikin Boiler displays a return temperature sensor fault, check the continuity between the sensor and the PCB, replacing the wire harness if needed. Also, check the flue temperature sensor resistance using a multimeter connected across the thermistor’s terminal pins.
P
Peter HuffmanAug 28, 2025
What to do if my Daikin Boiler flow temperature sensor is overheating?
- N
  navarrowilliamAug 28, 2025
  If your Daikin Boiler indicates that the flow temperature sensor is overheating, this could be due to a blocking error or lockout error. Reset the boiler if it's in lockout. Ensure radiator valves are open to allow sufficient water circulation. Check the pump's operation and cable connections, replacing any defective parts. Also, check the flow NTC sensor resistance using a multimeter; replace the sensor if it's not as expected.
M
Michele DillonAug 29, 2025
What to do if my Daikin D2CND024A4AA shows a flue temperature signalize overheating?
- G
  gordonmarkAug 29, 2025
  If your Daikin Boiler's flue temperature is signaling overheating, verify that the flue duct is installed correctly. Also, check the flue gas path for any blockages. Finally, check the flue temperature sensor resistance using a multimeter connected across the thermistor’s terminal pins.
T
Taylor KnightAug 30, 2025
What to do if my Daikin D2CND024A4AA Boiler has a flame stabilization fault?
- D
  Dana KingAug 30, 2025
  If your Daikin Boiler experiences a flame stabilization fault, it could be due to a blockage error. Check the following: * Inlet gas pressure. * Ignition and ionization electrodes. * Ignition transformer. * Gas valve. * Wire harness. Replace any defective parts.
Y
ymarshallAug 23, 2025
What to do if my Daikin D2CND024A4AA has low system pressure?
- V
  Victoria AndersenAug 23, 2025
  If your Daikin Boiler displays a low system pressure error, fill the system up to 0.8 bar. The boiler will automatically start running once the pressure goes above this level, so a reset is not needed.
D
douglasturnerAug 31, 2025
What to do if my Daikin Boiler shows an ion control deviation that is too big?
- M
  Michael CraigSep 1, 2025
  If your Daikin Boiler indicates that the ion control deviation is too big, it might be caused by a blockage error. You should check the ionization electrode, the gas valve, and the wire harness, replacing any defective parts.
L
lucascastroSep 1, 2025
What to do if my Daikin D2CND024A4AA Boiler displays a water pressure sensor fault?
- A
  Amanda GarrettSep 2, 2025
  If your Daikin Boiler is showing a water pressure sensor fault, check the pressure sensor and its cable connection for any interruptions. Replace any defective parts.

Summary

Introduction

Meaning of warnings and symbols

Defines danger, warning, caution, notice, and information symbols used in the manual.

Safety Instructions

Installation

Emphasizes that installation, service, and maintenance must be done by qualified personnel.

Smell of gas

Provides critical safety steps to take if a gas leak is detected in the unit.

Modifications on the unit

Warns against unauthorized modifications and using specific cleaning agents.

Gas conversion

For the user

Operation

Buttons and dials

Basic Usage

To select the operation mode

Instructions to change boiler's operating mode using the 'Mode' button.

Possible operation modes

Changing Temperature Setpoints

To change the central heating temperature setpoint

Guide on adjusting central heating temperature using the left dial.

To change the domestic hot water setpoint

Instructions for adjusting domestic hot water temperature using the right dial.

Boiler Frost Protection

About the boiler frost protection

Explains safety system protecting unit and installation from frost damage.

Error Handling

Error handling

Describes how errors are indicated on the interface and status indicator.

User Settings Menu

User settings menu: Parameters (short)

User settings menu: Parameters (detailed)

Energy Saving Tips

Energy saving tips

Error Codes

Error codes

Continues listing error codes, their problems, and solutions.

Summary

Introduction

Meaning of warnings and symbols

Defines danger, warning, caution, notice, and information symbols used in the manual.

Safety Instructions

Installation

Emphasizes that installation, service, and maintenance must be done by qualified personnel.

Smell of gas

Provides critical safety steps to take if a gas leak is detected in the unit.

Modifications on the unit

Warns against unauthorized modifications and using specific cleaning agents.

Gas conversion

For the user

Operation

Buttons and dials

Basic Usage

To select the operation mode

Instructions to change boiler's operating mode using the 'Mode' button.

Possible operation modes

Changing Temperature Setpoints

To change the central heating temperature setpoint

Guide on adjusting central heating temperature using the left dial.

To change the domestic hot water setpoint

Instructions for adjusting domestic hot water temperature using the right dial.

Boiler Frost Protection

About the boiler frost protection

Explains safety system protecting unit and installation from frost damage.

Error Handling

Error handling

Describes how errors are indicated on the interface and status indicator.

User Settings Menu

User settings menu: Parameters (short)

User settings menu: Parameters (detailed)

Energy Saving Tips

Energy saving tips

Error Codes

Error codes

Continues listing error codes, their problems, and solutions.

Daikin D2CND024A4AA Specifications

General

Brand	Daikin
Model	D2CND024A4AA
Category	Boiler
Language	English

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