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Daikin FTKE25BVM User Manual

Daikin FTKE25BVM
298 pages
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C-Series
[Applied Models]
zInverter Multi : Cooling Only
zInverter Multi : Heat Pump
Si12 - 411A

Table of Contents

Other manuals for Daikin FTKE25BVM

Questions and Answers:

Daikin FTKE25BVM Specifications

General IconGeneral
Cooling Capacity2.5 kW
Heating Capacity3.2 kW
Energy Efficiency Ratio (EER)3.21
RefrigerantR32
Weight (Indoor Unit)9 kg
Weight (Outdoor Unit)30 kg
TypeSplit System
Coefficient of Performance (COP)3.80
Power Supply230V/50Hz

Summary

Part 1 List of Functions

1. List of Functions

Overview of all functions available for cooling and heat pump models.

1.1 Cooling Only Models

Detailed list of functions for cooling-only air conditioning units.

1.1.1 R22 Series

Functions specific to the R22 series of cooling-only models.

1.1.2 R410A Series

Functions specific to the R410A series of cooling-only models.

1.2 Heat Pump Models

Detailed list of functions for heat pump air conditioning units.

1.2.1 R22 Series

Functions specific to the R22 series of heat pump models.

1.2.2 R410A Series

Functions specific to the R410A series of heat pump models.

Part 2 Specifications

1. Specifications

Technical specifications for various air conditioner models.

1.1 Indoor Units - Cooling Only

Detailed specifications for cooling-only indoor units by type.

1.2 Outdoor Units - Cooling Only

Detailed specifications for cooling-only outdoor units by model.

1.3 Indoor Units - Heat Pump

Detailed specifications for heat pump indoor units by type and model.

1.4 Outdoor Units - Heat Pump

Detailed specifications for heat pump outdoor units by model.

Part 3 Printed Circuit Board Connector Wiring Diagram

1. Printed Circuit Board Connector Wiring Diagram

Diagrams showing PCB connectors for different indoor unit types.

1.1 Wall Mounted Type 20/25/35 Class

PCB connector layout for wall-mounted indoor units (20/25/35 class).

1.2 Wall Mounted Type 50/60/71 Class

PCB connector layout for wall-mounted indoor units (50/60/71 class).

1.3 Duct Connected Type

PCB connector layout for duct-connected indoor units.

1.4 Floor / Ceiling Suspended Dual Type

PCB connector layout for floor/ceiling suspended dual type units.

1.5 Floor Standing Type

PCB connector layout for floor standing indoor units.

1.6 Outdoor Units

PCB connector layout for outdoor units.

Part 4 Function and Control

1. Main Functions

Overview of primary functions like frequency control and airflow.

1.1 Frequency Principle

Explanation of how the inverter controls compressor frequency for capacity.

1.2 Power-Airflow Dual Flaps, Wide Angle Louvers and Auto-Swing

Details on airflow control mechanisms for improved comfort.

1.3 Fan Speed Control for Indoor Units

How indoor fan speed is automatically controlled based on temperature.

1.4 Programme Dry Function

Function to remove humidity while maintaining room temperature.

1.5 Automatic Operation

Automatic switching between cooling and heating modes.

1.6 Night Set Mode

Mode to adjust temperature for economical sleeping conditions.

1.7 Intelligent Eye

Sensor-based operation to save energy by detecting human presence.

1.8 Home Leave Operation

Function to set preferred temperature for returning home or house care.

1.9 Inverter Powerful Operation

Maximizes cooling/heating effect by increasing fan and compressor speed.

1.10 Other Functions

Details on additional functions like Hot Start and filters.

2. Function of Main Structural Parts

Description of key components and their functions.

2.1 Main Structural Parts

Identification and description of major structural parts.

2.2 Function of Thermistor

Explanation of thermistor roles in heat pump and cooling-only models.

3. Control Specification

Specifications for system control logic and parameters.

3.1 Mode Hierarchy

Defines operating modes and their priority.

3.2 Frequency Control

How compressor frequency is determined based on room conditions.

3.3 Controls at Mode Changing / Start-up

Control logic for preheating, valve switching, and compressor protection.

3.4 Discharge Pipe Control

Control based on discharge pipe temperature to manage compressor operation.

3.5 Input Current Control

Control of frequency upper limit based on input current.

3.6 Freeze-up Protection Control

Mechanism to prevent indoor heat exchanger freezing during cooling.

3.7 Heating Peak-cut Control

Control to limit heating capacity and prevent high pressure.

3.8 Fan Control

Priorities and logic for controlling fan operation.

3.9 Moisture Protection Function 2

Control to stop compressor based on outdoor air and heat exchanger temperatures.

3.10 Defrost Control

Procedure for defrosting the outdoor unit heat exchanger in heat pump models.

3.11 Low Hz High Pressure Limit

Setting pressure limits in low Hz zones for heat pump models.

3.12 Electronic Expansion Valve Control

Details on EV control logic for various operations and conditions.

3.13 Malfunctions

Detection and causes of sensor errors, overload, and insufficient gas.

3.14 Forced Operation Mode

Modes for installation and service like forced cooling/heating.

3.15 Wiring-Error Check

Function to automatically check and correct wiring errors.

3.16 Additional Function

Additional functions like pipe condensation prevention and priority room setting.

Part 5 System Configuration

1. System Configuration

Overview of system configuration and operation instructions.

1.1 Operation Instructions

Guidance for users on operating and handling the air conditioner.

2. Instruction

General instructions including safety and reference pages.

2.1 Contents and Reference Page

Table of contents and cross-references for manual sections.

2.2 Safety Precautions

Essential safety warnings and precautions for installation and operation.

2.3 Names of Parts

Identification of parts for indoor, outdoor units, and remote controller.

2.4 Preparation before Operation

Steps for setting up the unit before initial operation.

2.5 AUTO · DRY · COOL · HEAT · FAN Operation

Instructions for selecting and operating different modes.

2.6 Adjusting the Air Flow Direction

How to adjust horizontal and vertical airflow direction for comfort.

2.7 POWERFUL Operation

How to maximize cooling/heating effect using the POWERFUL button.

2.8 OUTDOOR UNIT SILENT Operation

Procedure to lower outdoor unit noise level for quiet operation.

2.9 HOME LEAVE Operation

Function to record and recall preferred temperature and airflow settings.

2.10 INTELLIGENT EYE Operation

Using the sensor to detect human presence for energy saving.

2.11 TIMER Operation

Instructions for setting ON and OFF timers for automatic operation.

2.12 Note for Multi System

Specific considerations for multi-system installations.

2.13 Care and Cleaning

Guidelines for cleaning indoor, outdoor units, and remote controller.

2.14 Troubleshooting

Common issues and their explanations or solutions.

Part 6 Service Diagnosis

1. Caution for Diagnosis

Important cautions before performing diagnostic procedures.

1.1 Troubleshooting with the Operation Lamp

Using the operation lamp status for troubleshooting.

2. Problem Symptoms and Measures

List of common symptoms and corresponding troubleshooting steps.

3. Service Check Function

Procedure for activating and using the service check function.

4. Code Indication on the Remote Controller

Explanation of error codes displayed on the remote controller.

4.1 Error Codes and Description of Fault

Table of error codes and their corresponding problems.

5. Troubleshooting

Detailed troubleshooting guides for various unit malfunctions.

5.1 Indoor Units

Troubleshooting specific to indoor unit issues.

5.2 Outdoor Units

Troubleshooting specific to outdoor unit issues.

5.3 Indoor Unit PCB Abnormality

Troubleshooting steps for indoor unit PCB issues.

5.4 Freeze-up Protection Control or High Pressure Control

Troubleshooting for freeze-up or high-pressure protection faults.

5.5 Fan Motor or Related Abnormality

Troubleshooting for fan motor issues.

5.6 Thermistor or Related Abnormality (Indoor Unit)

Troubleshooting for indoor unit thermistor faults.

5.7 Shutter Drive Motor / Shutter Limit Switch Abnormality

Troubleshooting for shutter mechanism faults.

5.8 Signal Transmission Error (between Indoor and Outdoor Units)

Troubleshooting for communication errors between units.

5.9 Unspecified Voltage (between Indoor and Outdoor Units)

Troubleshooting for voltage mismatches between units.

5.10 Freeze-up Protection Control

Troubleshooting steps for freeze-up protection faults.

5.11 OL Activation (Compressor Overload)

Troubleshooting for compressor overload faults.

5.12 Compressor Lock

Troubleshooting steps for compressor lock faults.

5.13 DC Fan Lock

Troubleshooting for DC fan motor lock faults.

5.14 Input Over Current Detection

Troubleshooting for input over-current detection faults.

5.15 Four Way Valve Abnormality

Troubleshooting for four-way valve malfunctions.

5.16 Discharge Pipe Temperature Control

Troubleshooting for discharge pipe temperature control faults.

5.17 Position Sensor Abnormality

Troubleshooting for position sensor faults.

5.18 CT or Related Abnormality

Troubleshooting for CT or related abnormalities.

5.19 Thermistor or Related Abnormality (Outdoor Unit)

Troubleshooting for outdoor unit thermistor faults.

5.20 Electrical Box Temperature Rise

Troubleshooting for electrical box temperature rise faults.

5.21 Radiation Fin Temperature Rise

Troubleshooting for radiation fin temperature rise faults.

5.22 Output Over Current Detection

Troubleshooting for output over-current detection faults.

5.23 Insufficient Gas

Troubleshooting for insufficient gas conditions.

5.24 Low-voltage Detection

Troubleshooting for low-voltage detection faults.

6. Check

Procedures for checking various components and conditions.

6.1 How to Check

Detailed methods for checking specific parts and systems.

6.1.1 Fan Motor Connector Output Check

Checking output voltages and pulses for fan motor connectors.

6.1.2 Limit Switch Continuity Check

Procedure to check the continuity of the shutter limit switch.

6.1.3 Electronic Expansion Valve Check

Steps to check electronic expansion valve operation and coils.

6.1.4 Four Way Valve Performance Check

Procedure to check the performance of the four-way valve.

6.1.5 Thermistor Resistance Check

Checking thermistor resistance against a standard graph and table.

6.1.6 Installation Condition Check

Verifying installation conditions like airflow and heat exchanger cleanliness.

6.1.7 Discharge Pressure Check

Procedure to check discharge pressure and related components.

6.1.8 Outdoor Unit Fan System Check (With DC Motor)

Checking the outdoor unit fan system operation and components.

6.1.9 Power Supply Waveforms Check

Checking power supply waveform for sine wave and disturbances.

6.1.10 Inverter Units Refrigerant System Check

Checking refrigerant system for leaks and moisture.

6.1.11 Capacitor Voltage Check

Checking capacitor voltage and ensuring no live parts are touched.

6.1.12 Power Transistor Check

Checking power transistor voltage and resistance.

6.1.13 Main Circuit Electrolytic Capacitor Check

Checking main circuit electrolytic capacitor for short-circuit and continuity.

6.1.14 Turning Speed Pulse Input on the Outdoor Unit PCB Check

Checking fan motor speed pulse input on outdoor unit PCB.

6.1.15 Hall IC Check

Checking Hall IC for output voltage and pulse generation.

Part 7 Removal Procedure

1. Outdoor Unit (80 / 90 Class)

Procedure for removing outer panels of 80/90 class outdoor units.

1.1 Removal of Outer Panels

Step-by-step guide to removing outer panels from the unit.

1.2 Removal of Propeller Fans

Procedure for removing the propeller fan assembly.

1.3 Removal of Electrical Box

Steps to remove the electrical box containing wiring and components.

1.4 Removal of PCB

Procedure for removing the printed circuit board (PCB).

1.5 Removal of Fan Motor

Step-by-step guide for removing the fan motor.

1.6 Removal of Electronic Expansion Valve and Thermistor

Procedure for removing EV coils and thermistors.

1.7 Removal of Sound Insulation and Reactor

Steps to remove sound insulation and the reactor component.

1.8 Removal of Shunt

Procedure for removing the shunt component.

1.9 Removal of Solenoid Valve and Four Way Valve

Steps to remove solenoid and four-way valves.

1.10 Removal of Compressor

Procedure for removing the compressor.

2. Outdoor Unit (50 / 52 / 58 / 68 / 75 Class)

Procedure for removing outer panels of 50-75 class outdoor units.

2.1 Removal of Outer Panels

Step-by-step guide to removing outer panels from the unit.

2.2 Removal of Electrical BOX

Steps to remove the electrical box containing wiring and components.

2.3 Removal of PCB

Procedure for removing the printed circuit board (PCB).

2.4 Removal of Fan Motor

Step-by-step guide for removing the fan motor.

2.5 Removal of Sound Insulation

Steps to remove sound insulation materials.

2.7 Removal of Four Way Valve, Solenoid Valve and Shunt

Steps to remove four-way valve, solenoid valve, and shunt.

2.8 Removal of Solenoid Valve and Shunt

Procedure for removing solenoid valve and shunt.

2.9 Removal of Compressor

Step-by-step guide for removing the compressor.

Part 8 Others

1. Others

Miscellaneous information including test runs and jumper settings.

1.1 Test Run from the Remote Controller

Procedure for performing trial operation using the remote controller.

1.2 Jumper Settings

Information on jumper settings for indoor unit PCBs.

1.2.1 When Two Units are Installed in One Room

Settings for two indoor units in one room.

1.2.2 Jumper Setting

Details on specific jumper settings (JC, JB).

1.2.3 Adjusting the Angle of the Intelligent Eye Sensor

Guide to adjusting the sensor angle for optimal detection.

Part 9 Appendix

1. Piping Diagrams

Diagrams illustrating refrigerant piping for various models.

1.1 Indoor Units

Piping diagrams for different types of indoor units.

1.1.1 Wall Mounted Type

Piping diagrams for wall-mounted indoor units.

1.1.2 Duct Connected Type

Piping diagrams for duct-connected indoor units.

1.1.3 Floor / Ceiling Suspended Dual Type

Piping diagrams for floor/ceiling suspended dual type units.

1.1.4 Floor Standing Type

Piping diagrams for floor standing indoor units.

1.2 Outdoor Units

Piping diagrams for different types of outdoor units.

1.2.1 Cooling Only

Piping diagrams for cooling-only outdoor units.

1.2.2 Heat Pump

Piping diagrams for heat pump outdoor units.

2. Wiring Diagrams

Diagrams illustrating electrical wiring for units.

2.1 Indoor Units

Wiring diagrams for various indoor unit types.

2.1.1 Wall Mounted Type

Wiring diagrams for wall-mounted indoor units.

2.1.2 Duct Connected Type

Wiring diagrams for duct-connected indoor units.

2.1.3 Floor / Ceiling Suspended Dual Type

Wiring diagrams for floor/ceiling suspended dual type units.

2.1.4 Floor Standing Type

Wiring diagrams for floor standing indoor units.

2.2 Outdoor Units

Wiring diagrams for various outdoor unit types.

2.2.1 Cooling only

Wiring diagrams for cooling-only outdoor units.

2.2.2 Heat Pump

Wiring diagrams for heat pump outdoor units.

Drawings & Flow Charts

A

Flow chart for anti-icing function in other rooms.

B

Flow chart for automatic air flow control.

C

Flow chart for automatic operation.

D

Flow chart for auto-swing.

E

Flow chart for buzzer PCB.

F

Flow chart for capacitor voltage check.

H

Flow chart for CT or related abnormality.

I

Flow chart for indoor unit PCB abnormality.

J

Flow chart for fan motor or related abnormality.

L

Flow chart for limit switch continuity check.

M

Flow chart for main circuit electrolytic capacitor check.

N

Flow chart for night set mode.

O

Flow chart for ON/OFF button on indoor unit.

P

Flow chart for PCB checks.

R

Flow chart for radiation fin temperature rise.

S

Flow charts for various connector and PCB checks.

T

Flow chart for target discharge pipe temperature control.

U

Flow chart for unspecified voltage.

W

Flow chart for wiring diagrams.

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