• Indoor Units • R410A • FVXS-BAVMB18• Split Sky Air • Indoor Units118 Sound data8 - 1 Sound level dataCooling onlyModelSound pressure levelSound power levelcooling230V, 50HzMeasuring locationCoolingH L SLFVKS25B 38 26 23 54FVKS35B 39 27 24 55FVKS50B 44 36 33 56Heat pumpModelSound pressure levelSound power level(cooling/heating)230V, 50HzMeasuring locationCooling/HeatingH L SLFVXS25B 38/38 26/26 23/23 54/*FVXS35B 39/39 27/29 24/26 55/*FVXS50B 44/45 36/36 33/33 56/57* Sound power levels were not available at time of publicationLocation of microphoneLocation of microphone

specifications

control systems

dimensional drawing

centre of gravity

piping diagram

sound data

sound pressure spectrum

installation method

Daikin FVXS25BAVMB Manual

Part 1 List of Functions ................................................................ 1

safety cautions

cautions regarding products after repair

inspection after repair

using icons

Part 1 List of Functions

List of Functions

Specifications

Indoor Units

duct connected type

floor standing type

ceiling mounted cassette type

printed circuit board

Printed Circuit Board Connector Wiring Diagram

Branch Provider Unit

Wall Mounted Type 20/25/35/50 Class - D Series

Wall Mounted Type 20/25/35 Class - C Series

Wall Mounted Type 50/60/71 Class - E(B) Series

Duct Connected Type

Floor / Ceiling Suspended Dual Type

Floor Standing Type

ceiling mounted cassette 600×600 type

Ceiling Suspended Type

Refrigerant Circuit

BP Units

Functional Parts Layout

Refrigerant Flow for Each Operation Mode

Heating Operation

Cooling Oil Return Operation

heating oil return operation & defrost operation

Function

Part 5 Function

Operation Mode

Basic Control

Compressor PI Control

Electronic Expansion Valve PI Control

Cooling Operation Fan Control

Special Control

Oil Return Operation

Defrosting Operation

Pump-down Residual Operation

Stopping Operation

Protection Control

Low Pressure Protection Control

Discharge Pipe Protection Control

Inverter Protection Control

Freeze-up Protection Control

Dew Condensation Prevention Control

Other Control

BP Unit Control

BP Unit Electronic Expansion Valve Control

full closing of electronic expansion valves

SH Control in Cooling Operation

SC Control in Heating Operation

Indoor Unit (RA Models)

Fan Speed Control for Indoor Units

Programme Dry Function

Automatic Operation

Thermostat Control

Night Set Mode

ECONO Mode

INTELLIGENT EYE

HOME LEAVE Operation

Inverter POWERFUL Operation

Other Functions

Indoor Unit (SkyAir Models)

Electric Function Parts

Function Details

Test Operation

check operation

Outdoor Unit PCB Layout

Field Setting

Detail of Setting Mode

Field Setting for SkyAir Indoor Unit

Initial Setting Contents

Local Setting Mode Number

Detailed Explanation of Setting Modes

Centralized Group No. Setting

Maintenance Mode Setting

Test Operation and Field Setting for RA Indoor Unit

Jumper Settings

System Configuration

Instruction

Wall Mounted, Duct, Floor/Ceiling, Floor Standing Type

safety precautions

installation site

names of parts

indoor unit

outdoor unit

remote control

" Outdoor Unit

to set the clock

to change the air flow rate setting

FVXS25BAVMB

Part 2 Specifications

Heat Pump

Part 3 Printed Circuit Board Connector Wiring Diagram

Outdoor Unit

Part 4 Function and Control

Main Functions

Flap Control

Air Flow Selection

NIGHT SET Mode

Function of Thermistor

Cooling Only Model

Control Specification

Frequency Control

Controls at Mode Changing / Start-up

Discharge Pipe Control

Input Current Control

Fan Control

Defrost Control

Electronic Expansion Valve Control

Malfunctions

Forced Operation Mode

Facility Setting Jumper (cooling at low outdoor temperature)

Part 5 System Configuration

Names of parts

remote controller

Preparation before Operation

AUTO · DRY · COOL · HEAT · FAN Operation

Adjusting the Air Flow Direction

POWERFUL Operation

OUTDOOR UNIT SILENT Operation

TIMER Operation

Care and Cleaning

air filter

before a long idle period

Troubleshooting

check again

disposal requirements

fault diagnosis

Part 6 Service Diagnosis

Caution for Diagnosis

Problem Symptoms and Measures

Service Check Function

Indoor Unit PCB Abnormality

Fan Motor (DC Motor) or Related Abnormality

Thermistor or Related Abnormality (Indoor Unit)

Signal Transmission Error (between Indoor and Outdoor Unit)

between indoor and outdoor units

Outdoor Unit PCB Abnormality

OL Activation (Compressor Overload)

Compressor Lock

DC Fan Lock

Input Over Current Detection

Four Way Valve Abnormality

Discharge Pipe Temperature Control

High Pressure Control in Cooling

Compressor System Sensor Abnormality

Position Sensor Abnormality

DC Voltage / Current Sensor Abnormality

Thermistor or Related Abnormality (Outdoor Unit)

Electrical Box Temperature Rise

Radiation Fin Temperature Rise

Output Over Current Detection

Insufficient Gas

Over-voltage Detection

Check

electronic expansion valve check

four way valve performance check

thermistor resistance check

installation condition check

outdoor unit fan system check

power transistor check

Part 7 Removal Procedure

Indoor Unit

heat exchanger

Removal of Electrical Box

Removal of the Air Filter / Front Panel

Removal of the Horizontal Blade

Removal of the Electrical Box

Removal of the PCB

Removal of the Heat Exchanger

Removal of the Fan Rotor / Fan Motor

FVXS35BAVMB

FVXS5 0BAVMB