REMOVALPROCEDURES E R V I C E M A N U A LIndoor UnitInverterFloor Standing Type2.5/3.5/5.0 kW ClassSi061263

Daikin FVXG25K2V1B Service Manual

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

safety cautions

Part 1 List of Functions

Functions

Part 2 Specifications

Indoor Unit

specifications

floor standing type

duct connected type

ceiling mounted cassette type

Outdoor Unit

Part 3 Printed Circuit Board Connector Wiring Diagram

CTXS15/35K2V1B, FTXS20/25K2V1B

FTX20/25/35JV1B, FTX20/25/35J2V1B, ATX20/25/35JV1B ATX20/25/35J2V1B

FVXG25/35/50K2V1B

FVXS25/35/50FV1B

FLXS25/35/50BAVMB

FFQ25/35/50B8V1B, FFQ25/35/50B9V1B

Wired Remote Controller

BRC1E51A7

Wireless Remote Controller

Part 4 Function and Control

Function of RA Indoor Unit

Operation Starting Control

Airflow Direction Control

Fan Speed Control for Indoor Unit

RADIANT Operation

Program Dry Operation

Automatic Operation

Thermostat Control

NIGHT SET Mode

ECONO Operation

HOME LEAVE Operation

Area INTELLIGENT EYE Operation

INTELLIGENT EYE Operation

Inverter POWERFUL Operation

Multi-Colored Indicator Lamp / TIMER Lamp

Brightness Setting of Indoor Unit Display

Clock Setting

WEEKLY TIMER Operation

Other Functions

Function of SA Indoor Unit

remote controller

Thermostat Sensor in Remote Controller

Freeze Prevention Control

Hot Start Control (In Heating Operation Only)

Function of Thermistor

Control Specification

Frequency Control

Controls at Mode Changing / Start-up

Discharge Pipe Temperature Control

Input Current Control

Heating Peak-cut Control

Outdoor Fan Control

Defrost Control

Outdoor Electronic Expansion Valve Control

Malfunctions

Part 5 Remote Controller

RA Indoor Unit

mode button

FTXS35/42/50K2V1B

FTXS20/25/35/42/50J2V1B

ATXS20/25/35/42/50G2V1B

SA Indoor Unit

operation mode

BRC7E530W

Service Diagnosis

Part 6 Service Diagnosis

Troubleshooting with LED

Problem Symptoms and Measures

Service Check Function

arc452 series remote controller

arc433 series remote controller

Code Indication on Remote Controller

Troubleshooting for RA Indoor Unit

Freeze-up Protection Control or Heating Peak-cut Control

Fan Motor or Related Abnormality

Thermistor or Related Abnormality (RA Indoor Unit)

Front Panel Open / Close Fault (FTXG Series Only)

Troubleshooting for SA Indoor Unit

Drain Level Control System Abnormality

Fan Motor (AC Motor) or Related Abnormality

Drain System Abnormality

Thermistor or Related Abnormality (SA Indoor Unit)

FVXG25K2V1B

Cooling Only

Heat Pump

ceiling suspended type

FTXS20/25K2V1B, CTXS15/35K2V1B

FTXS25/35/42/50J2V1B

FTXS60/71GV1B

FLXS25/35/50/60BAVMB

FDXS25/35E7VMB, FDXS50/60C7VMB

FCQG35/50/60FVEB

FFQ25/35/50/60B9V1B

FHQ35/50/60BWV1B

FDBQ25B8V1

FBQ35/50/60C8VEB

BRC1E52A7, BRC1E52B7

Indoor Unit Control (RA Models)

indoor unit fan control

weekly timer operation

Indoor Unit Control (SA Models)

Low Hz High Pressure Limit

pressure equalizing control

Part 5 Operation Manual

System Configuration

name of parts

model name plate

titanium apatite photocatalytic

preparation before operation

fan operation

operating conditions

temperature setting

adjusting the airflow direction and rate

ra indoor unit

comfort airflow operation

powerful operation

outdoor unit quiet operation

off timer operation

on timer operation

note for multi system

FTXS-J, FTXS-G, FVXS Series - ARC452A1, A3

names of parts

opening the front panel

to change the airflow rate setting

part 1 list of functions

part 2 specifications

Specifications

RXG50K2V1B

RXG50K3V1B

main functions

airflow direction control

fan speed control for indoor unit

program dry operation

automatic operation

thermostat control

night set mode

econo operation

inverter powerful operation

clock setting

other functions

function of thermistor

control specification

frequency control

input current control

Freeze-up Protection Control

outdoor fan control

defrost control

outdoor electronic expansion valve control

part 5 remote controller

troubleshooting with led

problem symptoms and measures

service check function

troubleshooting

indoor unit pcb abnormality

Fan Motor (DC Motor) or Related Abnormality

Motor Operated Valve) Abnormality Freeze-up Protection Control

Thermistor or Related Abnormality (Indoor Unit)

refrigerant shortage

Low-voltage Detection or Over-voltage Detection

Signal Transmission Error (between Indoor Unit and Outdoor Unit)

Unspecified Voltage (between Indoor Unit and Outdoor Unit)

outdoor unit pcb abnormality

OL Activation (Compressor Overload)

compressor lock

dc fan lock

input overcurrent detection

four way valve abnormality

high pressure control in cooling

compressor system sensor abnormality

position sensor abnormality

DC Voltage / Current Sensor Abnormality (25/35 Class Only)

CT or Related Abnormality (RXG50K2V1B Only)

Thermistor or Related Abnormality (Outdoor Unit)

electrical box temperature rise

radiation fin temperature rise

output overcurrent detection

thermistor resistance check

fan motor connector output check

Electronic Expansion Valve Check

four way valve performance check

inverter analyzer check

rotation pulse check on the outdoor unit pcb

installation condition check

outdoor fan system check

capacitor voltage check

power module check

Part 7 Trial Operation and Field Settings

pump down operation

Forced Cooling Operation

trial operation

field settings

Standby Electricity Saving

Facility Setting Jumper (cooling at low outdoor temperature)

Jumper and Switch Settings

Silicon Grease on Power Transistor / Diode Bridge

Part 8 Appendix