Daikin Fwxv15aveb User manual

Service

Manual

Fan Coil Unit - Convector -

Floor Standing Type A-Series

SiBE611027_A

[Applied Models]

zFan Coil Unit - Convector - : Heat Pump

SiBE611027_A

iTable of Contents

Fan Coil Unit - Convector -

Floor Standing Type

A-Series

zHeat Pump

FWXV15AVEB

FWXV20AVEB

SiBE611027_A

Table of Contents ii

1. Introduction ............................................................................................ iv

1.1 Safety Cautions ....................................................................................... iv

1.2 Used Icons ............................................................................................ viii

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

1. Functions.................................................................................................2

Part 2 Specifications .................................................................... 3

1. Specifications ..........................................................................................4

Part 3 Printed Circuit Board Connector Wiring Diagram ............. 5

1. Printed Circuit Board Connector Wiring Diagram....................................6

Part 4 Function and Control.......................................................... 8

1. Temperature Control ...............................................................................9

2. Airflow Direction Control........................................................................10

3. Fan Speed Control ................................................................................11

4. Thermostat Control ...............................................................................12

5. POWERFUL Operation .........................................................................13

6. Interlinked Control with “Altherma”........................................................14

7. Water Valve Control ..............................................................................15

8. Other Functions.....................................................................................16

8.1 Signal Receiving Sign ............................................................................16

8.2 Indoor Unit ON/OFF Button....................................................................16

8.3 Titanium Apatite Photocatalytic Air-Purifying Filter ................................16

8.4 Auto-restart Function..............................................................................16

8.5 WEEKLY TIMER Operation ...................................................................16

Part 5 Operation Manual ............................................................. 17

1. System Configuration............................................................................18

2. Operation Manual..................................................................................19

2.1 Names of Parts.......................................................................................19

2.2 COOL · HEAT · FAN Operation..............................................................22

2.3 Adjusting the Airflow Direction................................................................24

2.4 POWERFUL Operation ..........................................................................26

2.5 FORCED QUIET Operation ...................................................................27

2.6 OFF TIMER Operation ...........................................................................28

2.7 ON TIMER Operation .............................................................................29

2.8 WEEKLY TIMER Operation ...................................................................30

Part 6 Service Diagnosis............................................................. 38

1. Troubleshooting with LED .....................................................................39

2. Problem Symptoms and Measures .......................................................40

3. Service Check Function ........................................................................41

3.1 ARC452 Series.......................................................................................41

4. Troubleshooting ....................................................................................44

SiBE611027_A

iii Table of Contents

4.1 Error Codes and Description ..................................................................44

4.2 Indoor Unit PCB Abnormality .................................................................45

4.3 Fan Motor (DC Motor) or Related Abnormality.......................................46

4.4 Thermistor or Related Abnormality (Indoor Unit)....................................48

5. Check ....................................................................................................49

5.1 How to Check .........................................................................................49

Part 7 Removal Procedure .......................................................... 51

1. Indoor Unit.............................................................................................52

1.1 Removal of Air Filter / Front Panel / Front Grille ....................................52

1.2 Removal of Horizontal Blade..................................................................55

1.3 Removal of Main Electrical Box / Sub Electrical Box .............................56

1.4 Removal of PCB from Sub Electrical Box ..............................................59

1.5 Removal of PCB from Main Electrical Box .............................................61

1.6 Removal of Upper Vertical Blades .........................................................65

1.7 Removal of Lower Vertical Blades .........................................................67

1.8 Removal of Indoor Heat Exchanger .......................................................71

1.9 Removal of Fan Rotor / Fan Motor.........................................................72

Part 8 Trial Operation and Field Settings................................... 74

1. Forced Operation Mode ........................................................................75

2. Trial Operation ......................................................................................76

3. Purging air.............................................................................................77

4. Field Settings ........................................................................................78

4.1 Model Type Setting ................................................................................78

4.2 When 2 Units are Installed in 1 Room....................................................79

4.3 Jumper and Switch Settings...................................................................80

Part 9 Appendix........................................................................... 81

1. Piping Diagrams....................................................................................82

2. Wiring Diagrams....................................................................................82

SiBE611027_A Introduction

1. Introduction

1.1 Safety Cautions

Cautions and

Warnings

Be sure to read the following safety cautions before conducting repair work.

The caution items are classified into “ Warning” and “ Caution”. The “ Warning”

items are especially important since they can lead to death or serious injury if they are not

followed closely. The “ Caution” items can also lead to serious accidents under some

conditions if they are not followed. Therefore, be sure to observe all the safety caution items

described below.

About the pictograms

This symbol indicates the item for which caution must be exercised.

The pictogram shows the item to which attention must be paid.

This symbol indicates the prohibited action.

The prohibited item or action is shown in the illustration or near the symbol.

This symbol indicates the action that must be taken, or the instruction.

The instruction is shown in the illustration or near the symbol.

After the repair work is complete, be sure to conduct a trial operation to ensure that the unit

operates normally, and explain the cautions for operating the product to the customer.

1.1.1 Cautions Regarding Safety of Workers

Warning

Be sure to turn off the power breaker before disassembling the unit for repair.

Working on the unit with power supplied may cause an electrical shock.

If it is necessary to supply power to the unit to conduct the repair or inspecting

the circuits, do not touch any electrically charged sections of the unit.

Do not start or stop operation by turning ON/OFF the power breaker.

Turning ON/OFF the power breaker to operate the unit may cause an electrical

shock or fire.

Be sure to wear a safety helmet, gloves, and a safety belt when working at a

high place (more than 2 m). Insufficient safety measures may cause a fall

accident.

Introduction SiBE611027_A

Caution

Do not repair the electrical components with wet hands.

Working on the unit with wet hands may cause an electrical shock.

Do not clean the unit by splashing water.

Washing the unit with water may cause an electrical shock.

Be sure to provide the grounding when repairing the unit in a humid or wet

place, to avoid electrical shocks.

Be sure to conduct repair work with appropriate tools.

The use of inappropriate tools may cause injury.

Be sure to check that the piping has cooled down enough before conducting

repair work.

Working on the unit when the piping is hot may cause burns.

SiBE611027_A Introduction

1.1.2 Cautions Regarding Safety of Users

Warning

Be sure to use parts listed in the service parts list of the applicable model and

appropriate tools to conduct repair work. Never attempt to modify the unit.

The use of inappropriate parts or tools may cause an electrical shock,

excessive heat generation or fire.

If the power cable and lead wires have scratches or deteriorated, be sure to

replace them.

Damaged cable and wires may cause an electrical shock, excessive heat

generation or fire.

Do not use a joined power cable or extension cable, or share the same power

outlet with other electrical appliances, since it may cause an electrical shock,

excessive heat generation or fire.

Be sure to use an exclusive power circuit for the unit, and follow the local

technical standards related to the electrical equipment, the internal wiring

regulations, and the instruction manual for installation when conducting

electrical work.

Insufficient power circuit capacity and improper electrical work may cause an

electrical shock or fire.

Be sure to use the specified cable for wiring. Make the connections securely

and route the cable properly so that there is no force pulling the cable at the

connection terminals.

Improper connections may cause excessive heat generation or fire.

When wiring, make sure that the terminal cover does not lift off or dismount

because of the cable.

If the cover is not mounted properly, the terminal connection section may cause

an electrical shock, excessive heat generation or fire.

When relocating the unit, make sure that the new installation site has sufficient

strength to withstand the weight of the unit.

If the installation site does not have sufficient strength and if the installation

work is not conducted securely, the unit may fall and cause injury.

This unit is designed for use with chilled or hot water. Using steam may

damage the unit or cause it to malfunction, and can lead to a burning.

Introduction SiBE611027_A

vii

Caution

Installation of a leakage breaker is necessary to prevent electrical shocks.

Do not install the unit in a place where there is a possibility of combustible gas

leaks.

If the combustible gas leaks and remains around the unit, it may cause a fire.

Check to see if the parts and wires are mounted and connected properly, and

if the connections at the soldered or crimped terminals are secure.

Improper installation and connections may cause excessive heat generation,

fire or an electrical shock.

If the installation platform or frame has corroded, replace it.

Corroded installation platform or frame may cause the unit to fall, resulting in

injury.

Check the grounding, and repair it if the unit is not properly grounded.

Improper grounding may cause an electrical shock.

Be sure to measure the insulation resistance after the repair, and make sure

that the resistance is 1 MΩor higher.

Faulty insulation may cause an electrical shock.

Be sure to check that there is no water leakage of piping between indoor and

outdoor after the repair.

Leaked water can fall in drops and wet the furniture and floor.

Never use water that does not satisfy EU drinking water quality standards. Do

not use well water, either.

Otherwise, the tank may be corroded. (Domestic hot water quality must be

according to EN directive 98/83/EC.)

The temperature of the water that flows through the unit must always be

maintained between 6°C and 60°C.

When the unit is not going to be used for a long period, it is best not to leave

water in the unit’s water pipes. Either fill the pipes with an anti-freeze solution

or discharge the water. Leaving water in the pipes can cause water leakage.

SiBE611027_A Introduction

viii

1.2 Used Icons

Icons are used to attract the attention of the reader to specific information. The meaning of each

icon is described in the table below:

Icon Meaning Description

Note:

Note A “note” provides information that is not indispensable, but may

nevertheless be valuable to the reader, such as tips and tricks.

Caution

Caution A “caution” is used when there is danger that the reader, through

incorrect manipulation, may damage unit, loose data, get an

unexpected result or has to restart (part of) a procedure.

Warning

Warning A “warning” is used when there is danger of personal injury.

Reference A “reference” guides the reader to other places in this manual,

where you can find additional information on a specific topic.

SiBE611027_A

1List of Functions

Part 1

List of Functions

1. Functions.................................................................................................2

SiBE611027_A Functions

List of Functions 2

1. Functions

Category Functions

FWXV15/20AVEB

Category Functions

FWXV15/20AVEB

Comfortable

Airflow

Power-Airflow Flap — Health &

Clean

Air-Purifying Filter —

Power-Airflow Dual Flaps — Photocatalytic Deodorizing Filter —

Power-Airflow Diffuser — Air-Purifying Filter with Photocatalytic

Deodorizing Function —

Wide-Angle Louvers {

Vertical Auto-Swing (Up and Down) {Titanium Apatite Photocatalytic

Air-Purifying Filter {

Horizontal Auto-Swing (Right and Left) —

3-D Airflow — Air Filter (Prefilter) {

Comfort

Control

Auto Fan Speed {Wipe-Clean Flat Panel {

Indoor Unit Quiet Operation {Washable Grille —

FORCED QUIET Operation {Timer WEEKLY TIMER Operation {

NIGHT QUIET Mode (Automatic) — 24-Hour ON/OFF TIMER {

OUTDOOR UNIT QUIET Operation (Manual) — NIGHT SET Mode —

INTELLIGENT EYE Operation — Worry Free

“Reliability &

Durability”

Auto-Restart (after Power Failure) {

Quick Warming Function

(Preheating Operation) — Self-Diagnosis (Digital, LED) Display {

Hot-Start Function — Flexibility Multi-Split/Split Type Compatible Indoor Unit —

Automatic Defrosting — Changeover between Heating/Cooling Use

and Heating Only Use {

Operation Automatic Operation —

Program Dry Operation — Flexible Voltage Correspondence —

Fan Only {Either Side Drain (Right or Left) —

Lifestyle

Convenience

New POWERFUL Operation

(Non-Inverter) —Remote

Control 5-Rooms Centralized Controller (Option) —

POWERFUL Operation {Remote Control Adaptor

(Normal Open Pulse Contact) (Option) —

HOME LEAVE Operation — Remote Control Adaptor

(Normal Open Contact) (Option) —

ECONO Operation — DIII-NET Compatible (Adaptor) (Option) —

Indoor Unit ON/OFF Button {Remote

Controller

Wireless {

Signal Receiving Sign {Wired (Option) —

R/C with Back Light {

Temperature Display —

Note: {: Holding Functions

— : No Functions

SiBE611027_A

3Specifications

Part 2

Specifications

1. Specifications ..........................................................................................4

SiBE611027_A Specifications

Specifications 4

1. Specifications

Note: 1. The range of usable water temperature is 6°C (min.) to 60°C (max.).

2. Maximum allowable water pressure is 1.18 MPa.

3. Comply with drinking water directive 98/83/EC for chilled water, hot water and make-up water.

4. The amount of water circulation should be 3 L/min to 15 L/min. (0.18 m³/h to 0.9 m³/h).

5. Allowable model of hydrobox interlinking is BA-series or later. (Refer to page 80 for detail.)

6. ★ The data are based on the following conditions.

50 Hz, 220 - 230 - 240 V / 60 Hz, 220 V

Model FWXV15AVEB FWXV20AVEB

Cooling Heating Cooling Heating

Dimensions (H × W × D) mm 600 × 700 × 210 600 × 700 × 210

Packaged Dimensions (H × W × D) mm 696 × 786 × 280 696 × 786 × 280

Weight kg 15 15

Gross Weight kg 19 19

Front Panel Color White White

Fan Type Turbo Fan Turbo Fan

Speed Steps 5 Steps, Quiet, Auto 5 Steps, Quiet, Auto

Airflow Rate m³/h

(cfm)

H 318 (188) 318 (188) 474 (280) 474 (280)

M 228 (135) 228 (135) 354 (209) 354 (209)

L 150 (89) 150 (89) 240 (142) 240 (142)

SL 126 (74) 126 (74) 198 (117) 198 (117)

Capacity ★

Total Capacity

(Rated: M)

kW 1.2 1.5 1.7 2.0

Btu/h 4,100 5,100 5,800 6,800

Sensible Capacity

(Rated: M)

kW 0.98 — 1.4 —

Btu/h 3,300 — 4,800 —

Water Volume

(Rated: M)

m³/h 0.20 0.26 0.29 0.34

L/min 3.4 4.3 4.9 5.7

Water Pressure Drop

(Rated: M) kPa10131922

Running Current (Rated: M) A 0.08 0.08 0.10 0.10

Power Consumption (Rated: M) W 13 13 15 15

Power Factor (Rated: M) % 70.7 70.7 65.2 65.2

Operation

Sound (Rated: M) dB(A) 19 19 29 29

Sound Power (Rated: M) dB(A) 35 35 45 45

Air Direction Control Right, Left, Horizontal, Downward Right, Left, Horizontal, Downward

Air Filter Removable / Washable / Mildew Proof Removable / Washable / Mildew Proof

Temperature Control Microcomputer Control Microcomputer Control

Connection

Pipe Size

Inlet inch G 1/2 G 1/2

Outlet inch G 1/2 G 1/2

Drain mm φ18 φ18

Heat Insulation Both Inlet and Outlet Pipes Both Inlet and Outlet Pipes

Drawing No. 3D066678A

Conversion Formulae

Btu/h = kW × 3412

cfm = m³/min × 35.3

Cooling Heating

Room Temperature: 27°CDB, 19°CWB

Entering Water Temperature: 7°C

Water Temperature Rise: 5 K

Room Temperature: 20°CDB

Entering Water Temperature: 45°C

Water Temperature Drop: 5 K

SiBE611027_A

5Printed Circuit Board Connector Wiring Diagram

Part 3

Printed Circuit Board

Connector Wiring Diagram

1. Printed Circuit Board Connector Wiring Diagram....................................6

SiBE611027_A Printed Circuit Board Connector Wiring Diagram

Printed Circuit Board Connector Wiring Diagram 6

1. Printed Circuit Board Connector Wiring Diagram

Connectors and

Other Parts PCB (1): Sensor PCB

PCB (2): Control PCB

PCB (3): Service PCB

PCB (4): Display PCB

PCB (5): Sub PCB

1) S49 Connector for control PCB

2) RTH2 (R1T) Room temperature thermistor

1) S1 Connector for fan motor

2) S19, S43 Connector for sub PCB

3) S21 Connector for centralized control (HA)

4) S26 Connector for service PCB

5) S32 Indoor heat exchanger thermistor

6) S41 Connector for lower air outlet motor

7) S42 Connector for swing motor

8) S46 Connector for display PCB

9) S48 Connector for sensor PCB

10) H1, H2, H3 Connector for terminal board

11) E1 Terminal for earth

12) V1, V2 Varistor

13) JA Address setting jumper

∗Refer to page 79 for detail.

JC Power failure recovery function

∗Refer to page 80 for detail.

14) FU1 (F1U) Fuse (3.15 A, 250 V)

15) LED A LED for service monitor (green)

1) S27 Connector for control PCB

2) SW2-1 Switch for changeover between heating/cooling use and

heating only use

∗Refer to page 80 for detail.

3) SW2-2 Switch for interlinked control with “Altherma”

∗Refer to page 80 for detail.

4) SW2-4 Switch for upward airflow limit setting

∗Refer to page 80 for detail.

5) SW4 (S4W) Switch for air outlet selection

∗Refer to page 19, 25 for detail.

1) S47 Connector for control PCB

2) SW1 (S1W) Forced operation ON/OFF button

∗Refer to page 75 for detail.

3) LED1 (H1P) LED for operation (green)

4) LED2 (H2P) LED for timer (yellow)

1) S10, S30 Connector for control PCB

2) S40 Connector for terminal board

3) FU11 (F11U) Fuse (3.15 A, 250 V)

4) FU12 (F12U) Fuse (125 mA, 250 V)

Printed Circuit Board Connector Wiring Diagram SiBE611027_A

7Printed Circuit Board Connector Wiring Diagram

PCB Detail PCB (1): Sensor PCB

PCB (2): Control PCB

PCB (5): Sub PCB

PCB (3): Service PCB PCB (4): Display PCB

✩LED 3 does not function.

S49

RTH2

3P191450-1

S48

S46

S26

S32

2P258262-1

S42S41S43S1

FU1

LED A

S21 S19

S27

SW4

SW2-4

SW2-1

SW2-2

3P191448-1

S47SW1LED2

LED1

3P191447-1

S40

FU12

FU11

2P257039-1

S30

S10

SiBE611027_A

Function and Control 8

Part 4

Function and Control