MONOBLOC type

AIR TO WATER HEAT PUMP

MONOBLOC type

CONTENTS

SPECIFICATION. . . . . . . . . .. . . . . . . . . . . . . . 2FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4OPERATION DETAILS . . . . . . . . . . . . . . . . . . 5TROBLESHOOTING GUIDE . . . . . . . . . . . . . 6

PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . .

14ELECTRIC CIRCUIT DIAGRAM . . . . . . . . . 15EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . .16

DISASSEMBLY PROCESS . . . . . . . . . . .. . .18

Models

Outdoor unit

WPYA100LAWPYA080LA

SPECIFICATION

– 2 –

Specifications are subject to change without notice. •

Unit

kWCooling Capacity

kWHeating Capacity

phase

Power source

Single

V 230

Hz 50

OUTLET

Airflow Method

TOP VIEW

INTAKE

W

Electrical Data

Input

Running Current(MAX.)

Cooling ;Heating ;

A

Height

Width

Depth

Number of core-wirePower Cord core-wire / 3.5~4.0mm2

mm

Dimensions mm

mm

kgNet Weight

WPYA100LA

7.1

10.0

Water Pipe Size Out ;Return ;

R1(25A)R1(25A)

20602300

Cooling ;Heating ;

9.2(14.5)10.2(18.3)

881.5

850

330

82

Air Circulation

Propeller Fan

100

DC brushless (8-pole)

W

Heat Exchanger18.1 FPI

Expansion Valve

Plate fin configuration,forced draft

Refrigerant Control Device

gRefrigerant (R410A ) 1500

Thermostat

Type

Motor Type

Rated Output

Electronic Control

SPECIFICATION

– 3 –

Specifications are subject to change without notice. •

Unit

kWCooling Capacity

kWHeating Capacity

phase

Power source

Single

V 230

Hz 50

OUTLET

Airflow Method

TOP VIEW

INTAKE

W

Electrical Data

Input

Running Current(MAX.)

Cooling ;Heating ;

A

Height

Width

Depth

Number of core-wirePower Cord core-wire / 3.5~4.0mm2

mm

Dimensions mm

mm

kgNet Weight

WPYA080LA

6.4

8.0

Water Pipe Size Out ;Return ;

R1(25A)R1(25A)

17801780

Cooling ;Heating ;

8.0(13.1)8.0(16.1)

881.5

850

330

82

Air Circulation

Propeller Fan

100

DC brushless (8-pole)

W

Heat Exchanger18.1 FPI

Expansion Valve

Plate fin configuration,forced draft

Refrigerant Control Device

gRefrigerant (R410A ) 1500

Thermostat

Type

Motor Type

Rated Output

Electronic Control

– 4 –

FUNCTIONS

Inverter control reduce the ON/OFF times of compressor, so can keep the water temperature changeless during opera-tion.

Inverter control

Cold water mode.Hot water mode.

Operation mode

Inverter control can operate with less electricity consumption than normal air to water heat pump.

Electricity consumption

Defrosting operation is controlled by the temperature of outdoor heat exchanger sensed by the thermistor.

Defrost control

Anti-freeze operation automatically starts when the outdoor temperature is lower than 2°C.

Anti-freezing control for the circulation water

Restarting is inhibited for approximately 3 minutes.

Time delay safety control

UNIT

– 5 –

OPERATION DETAILS

DEFROSTING OPERATION(FOR A UNIT HEAT EXCHANGER)

-1.5˚C

Defrosting starts Defrosting stop

Temperature of outdoor heat exchanger

2min.19˚C

Compressor

Outdoor fan

4way valve

ON

ON

ON

ON

OFF

50sec.

50sec.

Max 12min. 53sec.53sec.

10sec.

OFF

ON

MAX 90Hz

Defrosting operation is controlled by the temperature of outdoor heat exchanger sensed by the thermistor and • the timer switch.Defrosting operation starts when the both of the following conditions are met at the same time. • a)35 minutes’ of continuous run of the compressor after the start of heating operation or after the completion of previous defrosting operation. b)The temperature of the outdoor heat exchanger stays lower than -1.5°C continuously for two minutes.Defrosting operating is called off if either of the following conditions is met. • a)The temperature of outdoor heat exchanger rises to 19°C while 4-way-valve is ON. b)12 minutes has passed since compressor turned ON.

Working condition of frost protection heater for expansion vessel • The heater turns ON if the outdoor temperature keeps below 3 degree for 1 minute. The heater turns OFF if the outdoor temperature keeps above 5 degree for 1 minute.

– 6 –

TROUBLESHOOTING GUIDE

FOR YOUR SAFETY USE

For the safety and proper use and handling of the product, please read and follow the instructions carefully. •The meaning of the marks below are as follows. •

Never remodel appliance. •Use designated parts or accessories to avoid accidents.

In case of gas leakage, not only refill the required amount of the refrigerant gas but also •find out the gas leakage point and mend it. If the service work has to be suspended before mending the leakage points, be sure to collect the refrigerant gas in the unit by using pump then fasten the service ports to avoid any further leakage. Poisonous gas may be generated when the leaked refrigerant is exposed to fire.

Be sure to change the cable if it is damaged. •Do not use damaged cable.

Do not use power supply cord extended or connected in halfway. •

Be sure to put the units to earthing works. •

Be sure to check the insulated resistance, more than 1M Ω. •

Warning

CheckPoint

CheckPoint

If leakage of refrigerant occur in the installation, ventilate a room. •If the leaked refrigerant is exposed fire, poisonous gas may be generated.

Danger

Boosting capacitor make the control box assembly high voltage. •Make the capacitor discharge enough when servicing. Otherwise will be struck by elec-tricity.

Improper use will cause the significant risk of death or serious injury of the user.

Improper use may cause the risk of death or serious injury of the user.

Danger

Warning

Please refer the marks below. •

Caution ProhibitedHigh Voltage

Strict enforcement Connect the earthing cable

– 7 –


ERROR CODESTh

e er

ror c

odes

dis

play

ed o

n th

e un

it di

spla

y bo

ard

indi

cate

the

loca

tion

of th

e br

eakd

own

or a

bnor

mal

ity.

APP

EARA

NCE

, PO

RTIO

N, P

ART

S SE

EMED

WRO

NG

chec

k th

e po

wer

sup

ply

chec

k th

e el

ectr

ic c

ontin

uity

by

test

er [s

ee fi

g. 1

]

MET

HO

D O

F CH

ECK

TRO

UBL

ESH

OO

TIN

G

POW

ER S

UPP

LY

FUSE

CF3

(250

V T5

A)

chec

k th

e el

ectr

ic c

ontin

uity

by

test

er [s

ee fi

g. 1

]FU

SE C

F1 (2

50V

T25A

)

Dis

char

ge

tem

pera

ture

Err

orch

eck

the

serv

ice

valv

e an

d re

frig

eran

t circ

uit (

pipe

)ch

eck

the

resi

stan

ce b

y te

ster

[see

tabl

e 1]

chec

k th

e re

sist

ance

by

test

er [s

ee ta

ble

2]

CT

disc

onne

ctio

n

prot

ectiv

e ac

tion

agai

nst e

xces

s

curr

ent A

C cu

rren

t de

tect

ion

chec

k th

e po

wer

vol

tage

(230

V)

GA

S LE

AKA

GE

chec

k th

e pl

ace

of in

stal

latio

n (b

lock

age

of a

ir in

let &

out

let )

ch

eck

the

exce

ss g

asU

NRE

ASO

NA

BLE

OPE

RATI

ON

U

ND

ER O

VERL

OA

D

PCB

(CO

NTR

OLL

ER)

DRO

P O

F PO

WER

VO

LTAG

EM

OM

ENTA

RY S

TOP

OF

POW

ER

(IN C

ASE

OF

LIG

HTN

ING

)

A1

A3

A4

DC

volta

ge E

rror

FUSE

CF4

(250

V T3

.15A

)

FAN

MO

TOR

A0

POW

ER M

OD

ULE

take

off

the

term

inal

s (o

rang

e an

d bl

ue) a

nd c

heck

the

resi

stan

ce b

etw

een

oran

ge-b

lue

if th

e re

sist

ance

is o

ver 1

00kΩ

, PO

WER

MO

DU

LE is

nor

mal

POW

ER S

UPP

LYch

eck

the

pow

er s

uppl

y

(*1)

Whe

n ch

ecki

ng fa

n m

otor

and

/or p

ump,

turn

off

the

pow

er s

uppl

y co

mpl

etel

y an

d to

uch

thei

r ter

min

al o

r con

nect

or

take

off

the

conn

ecto

r 9

, an

d ch

eck

the

resi

stan

ce b

etw

een

red-

blac

k in

the

conn

ecto

r if t

he re

sist

ance

is o

ver 1

00kΩ

, FA

N M

OTE

R is

nor

mal

SEN

SOR,

TEM

P. SU

CTI

ON

SEN

SOR,

TEM

P. D

ISCH

ARG

E

abno

rmal

revo

lutio

n of

com

pres

sor

A5

POW

ER M

OD

ULE

prot

ectiv

e ac

tion

agai

nst e

xces

s cu

rren

t DC

curr

ent

dete

ctio

n

chec

k th

e pl

ace

of in

stal

latio

n (b

lock

age

of a

ir in

let &

out

let )

ch

eck

the

exce

ss g

as

chec

k th

e po

wer

vol

tage

(230

V)

UN

REA

SON

ABL

E O

PERA

TIO

N

UN

DER

OVE

RLO

AD

DRO

P O

F PO

WER

VO

LTAG

E

FUSE

CF2

(250

V T1

5A)

othe

r tha

n de

scrib

ed a

bove

chec

k th

e el

ectr

ic c

ontin

uity

FU

SE C

F2 (2

50V

T15A

) by

test

er

A2

POW

ER M

OD

ULE

COM

PRES

SOR

oper

ate

with

out t

he ju

nctio

n co

nnec

tor o

f com

pres

sor l

ead

wire

chec

k th

e pl

ace

of in

stal

latio

n (b

lock

age

of a

ir in

let &

out

let )

ch

eck

the

exce

ss g

as

chec

k th

e po

wer

vol

tage

(230

V)

UN

REA

SON

ABL

E O

PERA

TIO

N

UN

DER

OVE

RLO

AD

DRO

P O

F PO

WER

VO

LTAG

EFU

SE C

F2 (2

50V

T15A

)ch

eck

the

elec

tric

con

tinui

ty F

USE

CF2

(250

V T1

5A) b

y te

ster

COM

PRES

SOR

othe

r tha

n de

scrib

ed a

bove

chec

k th

e re

sist

ance

of P

OW

ER M

OD

ULE

by

test

er

take

off

the

junc

tion

conn

ecto

r of c

ompr

esso

r lea

d w

ire

mea

sure

resi

stan

ce b

etw

een

the

conn

ecto

r pin

s of

junc

tion

conn

ecto

r, si

x tim

es b

etw

een

whi

te-b

lack

, bla

ck-r

ed, r

ed-w

hite

resp

ectiv

ely

by c

hang

ing

the

pola

rity

i

f all

the

figur

es s

how

ove

r 100

kΩ, P

OW

ER M

OD

ULE

is n

orm

al

confi

rm th

e po

wer

sup

ply.

if CF

3 is

blow

n, it

shou

ld b

e re

plac

ed a

nd c

heck

if th

ere

is a

shor

t-ci

rcui

t at a

con

nect

or

of th

e 4-

way

val

ve c

oil,

the

heat

er fo

r tan

k, o

r the

circ

ulat

ion

pum

p. [s

ee fi

g 4,

5,6]

if a

shor

t-ci

rcui

t is f

ound

, the

par

ts sh

ould

be

repl

aced

.

if CF

1 is

blo

wn,

PCB

(CO

NTR

OLL

ER) s

houl

d be

repl

aced

and

che

ck th

e re

sist

ance

s be

twee

n pi

nk-g

ray

and

oran

ge-b

lue

in th

e co

nnec

tor o

f PO

WER

MO

DU

LE. [

see

fig 7

]if

thes

e va

lues

are

bel

ow 1

00kΩ

, PO

WER

MO

DU

LE s

houl

d be

repl

aced

.

colle

ct re

frig

eran

t onc

e, th

en re

char

ge w

ith p

resc

ribed

mas

s.SE

NSO

R, T

EMP.

SUC

TIO

N s

houl

d be

repl

aced

.SE

NSO

R, T

EMP.

DEF

ROST

sho

uld

be re

plac

ed.

PCB(

CON

TRO

LLER

) sho

uld

be re

plac

ed.

ensu

re th

e in

stal

latio

n po

sitio

n to

avo

id b

lock

age

of a

ir in

let &

out

let.

confi

rm th

e po

wer

sup

ply

volta

ge. (

230V

)

rest

art o

pera

tion.

if ex

cess

gas

is o

bser

ved,

col

lect

all

refr

iger

ant o

nce,

then

rech

arge

with

pr

escr

ibed

mas

s.

if th

ese

valu

es a

re b

elow

100

kΩ, P

OW

ER M

OD

ULE

sho

uld

be re

plac

ed.

if FA

N M

OTO

R is

abn

orm

al, i

t sho

uld

be re

plac

ed. a

nd c

heck

the

elec

tric

con

tinut

y fu

se C

F4 b

y te

ster

. [s

ee fi

g 2]

if CF

4 is

blo

wn,

it sh

ould

be

repl

aced

.

confi

rm th

e po

wer

sup

ply.

ensu

re th

e in

stal

latio

n po

sitio

n to

avo

id b

lock

age

of a

ir in

let &

out

let.

if ex

cess

gas

is o

bser

ved,

col

lect

all

refr

iger

ant o

nce,

then

rech

arge

with

pr

escr

ibed

mas

s.

COM

PRES

SOR

shou

ld b

e re

plac

ed.

if CF

2 is

blo

wn,

PCB

(CO

NTR

OLL

ER) s

houl

d be

repl

aced

.

COM

PRES

SOR

shou

ld b

e re

plac

ed.

if th

e sa

me

erro

r cod

e ap

pear

s ag

ain,

PO

WER

MO

DU

LE s

houl

d be

repl

aced

.co

nfirm

the

pow

er s

uppl

y vo

ltage

. (23

0V)

ensu

re th

e in

stal

latio

n po

sitio

n to

avo

id b

lock

age

of a

ir in

let &

out

let.

if ex

cess

gas

is o

bser

ved,

col

lect

all

refr

iger

ant o

nce,

then

rech

arge

with

pr

escr

ibed

mas

s.

confi

rm th

e po

wer

sup

ply

volta

ge (2

30V)

if an

y of

thes

e va

lues

is b

elow

100

kΩ, P

OW

ER M

OD

ULE

sho

uld

be re

plac

ed.

if CF

2 is

blo

wn,

PO

WER

MO

DU

LE a

nd P

CB(C

ON

TRO

LLER

) sho

uld

be re

plac

ed.

ERR

OR

CO

DES

UN

IT

– 8 –


ERROR CODES

Pum

p Er

ror

CLO

GG

ED T

HE

CIRC

ULA

TIO

N

PUM

P A

ND

/OR

HEA

TIN

G C

IECU

ITch

eck

the

pum

p an

d he

atin

g ci

rcui

t

PUM

PPC

B (C

ON

TRO

LLER

) (*

1)P1

low

-out

side

air

tem

pera

ture

lim

it

THE

OU

TDO

OR

TEM

P. FA

LLS

BELO

W -2

0°C

belo

w -2

0°C,

it is

like

ly n

ot to

ope

rate

for t

he p

rote

ctio

n of

the

equi

pmen

t U

5SE

NSO

R TE

MP.

OU

TDO

OR

chec

k th

e re

sist

ance

by

test

er [

see

tabl

e 1]

not c

ool d

own

not w

arm

up

chec

k th

e re

sist

ance

by

test

er [s

ee ta

ble

1]SE

NSO

R,TE

MP.

OU

TGO

ING

AN

D

RETU

RN C

IRCU

LATI

NG

WA

TER

GA

S LE

AKA

GE

chec

k th

e se

rvic

e va

lve

and

refr

iger

ant c

ircui

t ( p

ipe

)

CLO

GG

ED H

EATI

NG

CIR

CUIT

chec

k te

mpe

ratu

re d

iffer

ence

hea

ting

flow

/ret

urn

[see

pag

e 11

]la

rge

diffe

renc

e m

eens

flow

rate

is to

o lo

w

SHO

RT C

YCLE

(IN

SUFF

ICIE

NT

AIR

CIR

CULA

TIO

N)

chec

k th

e bl

ocka

ge o

f air

inle

t & o

utle

t

(*1)

Whe

n ch

ecki

ng fa

n m

otor

and

/or p

ump,

turn

off

the

pow

er s

uppl

y co

mpl

etel

y an

d to

uch

thei

r ter

min

al o

r con

nect

or.

(*2)

In c

ase

of d

etec

ting

open

circ

uit o

f the

dis

char

ge te

mpe

ratu

re th

erm

isto

r, er

ror d

ispl

ay a

ppea

rs 1

0 m

inut

es a

fter

sta

rt o

per

atin

g.

I

n ca

se o

f det

ectin

g sh

ort c

ircui

t of t

he d

isch

arge

tem

pera

ture

ther

mis

tor,

erro

r dis

play

app

ears

imm

edia

tely

.

chec

k th

e vo

ltage

of P

UM

P [s

ee fi

g. 3

]

4-W

AY

VALV

Ech

eck

the

resi

stan

ce b

y te

ster

[see

fig.

4]

APP

EARA

NCE

, PO

RTIO

N, P

ART

S SE

EMED

WRO

NG

MET

HO

D O

F CH

ECK

Inve

rter

PCB

se

rial e

rror

CON

NEC

TOR

13 is

RA

RE C

ON

TACT

or P

OW

ER M

OD

ULE

and

PC

B(CO

NTR

OLL

ER)

Turn

off

the

pow

er s

uppl

y , w

ait f

or a

bout

3 m

inut

es

take

off

and

inse

rt th

e co

nnec

tor 1

3 , a

nd th

en p

ower

up

agai

naf

ter r

epla

cing

PO

WER

MO

DU

LE, r

esta

rt o

pera

tion

agai

n

Retu

rn c

ircul

atin

g w

ater

tem

p.se

nsor

Err

orSE

NSO

R, T

EMP.

RET

URN

CI

RCU

LATI

NG

WA

TER

chec

k th

e re

sist

ance

by

test

er [s

ee ta

ble

1]

E5C8

Out

goin

g ci

rcul

atin

g te

mp.

sens

or E

rror

SEN

SOR,

TEM

P. O

UTG

OIN

G

CIRC

ULA

TIN

G W

ATE

Rch

eck

the

resi

stan

ce b

y te

ster

[see

tabl

e 1]

E4

Hea

t pum

p re

gula

tor P

CB

seria

l err

orCC

MIS

-WIR

ING

(I/F

PCB

-HEA

T PU

MP

REG

ULA

TOR)

OR

RARE

CO

NTA

CTch

eck

the

wiri

ng c

onne

ctio

n an

d ra

re c

onta

ct

I/F P

CBot

her t

han

desc

ribed

abo

veot

her t

han

desc

ribed

abo

ve

rem

ove

the

clog

, the

n re

star

t ope

ratio

n.

Whe

n th

e te

mpe

ratu

re ri

ses,

the

unit

auto

mat

ical

ly re

star

ts th

e op

erat

ion.

if th

e se

nsor

is fa

ulty

, it s

houl

d be

repl

aced

.

if an

y of

thes

e se

nsor

s is

faul

ty, i

t sho

uld

be re

plac

ed.

afte

r fixi

ng th

e le

akag

e po

int,

colle

ct th

e re

frig

eran

t onc

e, th

en re

char

ge w

ith

pres

crib

ed m

ass.

rem

ove

the

clog

, the

n re

star

t ope

ratio

n.

ensu

re th

e in

stal

latio

n po

sitio

n to

avo

id b

lock

age

of a

ir in

let &

out

let.

if th

e vo

ltage

is n

orm

al, P

UM

P sh

ould

be

repl

aced

. if

the

volta

ge is

abn

orm

al, P

CB(C

ON

TRO

LLER

) sho

uld

be re

plac

ed.

if th

e va

lue

is a

bnor

mal

, the

coi

l sho

uld

be re

plac

ed.

if th

e sa

me

erro

r cod

e ap

pear

s, P

OW

ER M

OD

ULE

sho

uld

be re

plac

ed.

if th

e sa

me

erro

r cod

e ap

pear

s, P

CB(C

ON

TRO

LLER

) sho

uld

be re

plac

ed.

if th

e se

nsor

is fa

ulty

, it s

houl

d be

repl

aced

.

if th

e se

nsor

is fa

ulty

, it s

houl

d be

repl

aced

.

chec

k w

iring

con

nect

ion

and

rate

con

tact

.th

en re

star

t ope

ratio

n.I/F

PCB

sho

uld

be re

plac

ed.

HEA

T PU

MP

REG

ULA

TOR

PCB

shou

ld b

e re

plac

ed.

Hea

t pum

p re

gula

tor

PCB

(CO

NTR

OLL

ER)

FUSE

CF4

(250

V T3

.15A

) FA

N M

OTO

R

(*1)

Fan

mot

orEr

ror

C3

rise

of te

mpe

ratu

re

(abo

ve 1

10°C

) of

PO

WER

MO

DU

LEPo

wer

mod

ule

sens

or E

rror

chec

k th

e pl

ace

of in

stal

latio

n (b

lock

age

of a

ir in

let &

out

let)

SEN

SOR,

TEM

P. P

OW

ER M

OD

ULE

MIS

-INST

ALL

ATI

ON

C4 C5 C6

I/F P

CB s

eria

l err

orC7

MIS

-WIR

ING

[ PC

B ( C

ON

TRO

LLER

) -

I/F P

CB C

ON

NEC

TIN

G C

ABL

E ] O

R RA

RE C

ON

TACT

chec

k th

e w

iring

con

nect

ion

and

rare

con

tact

othe

r tha

n de

scrib

ed a

bove

I/F P

CB

PCB

(CO

NTR

OLL

ER)

chec

k th

e el

ectr

ic c

ontin

uity

FU

SE C

F4 (2

50V

T3.1

5A) b

y te

ster

othe

r tha

n de

scrib

ed a

bove

SEN

SOR,

TEM

P. P

OW

ER M

OD

ULE

PCB

(Con

trol

ler)

Erro

rPC

B (C

ON

TRO

LLER

)

POW

ER M

OD

ULE

sho

uld

be re

plac

ed.

ensu

re th

e in

stal

latio

n po

sitio

n to

avo

id b

lock

age

of a

ir in

let &

out

let.

afte

r cor

rect

ing

mis

wiri

ng, r

esta

rt o

pera

tion.

I/F P

CB s

houl

d be

repl

aced

.

if CF

4 is

blo

wn,

FA

N M

OTO

R an

d CF

4 sh

ould

be

repl

aced

.if

CF4

is n

ot b

low

n, c

heck

the

volta

ge o

f FA

N M

OTO

R.[s

ee fi

g 2

]if

the

volta

ge is

nor

mal

, FA

N M

OTO

R sh

ould

be

repl

aced

.if

the

volta

ge is

faul

ty, P

CB(C

ON

TRO

LLER

) sho

uld

be re

plac

ed.

POW

ER M

OD

ULE

sho

uld

be re

plac

ed.

PCB(

CON

TRO

LLER

) sho

uld

be re

plac

ed.

PCB(

CON

TRO

LLER

) sho

uld

be re

plac

ed.

Suct

ion

tem

p.

sens

or E

rror

Out

door

tem

p.se

nsor

Err

orch

eck

the

resi

stan

ce b

y te

ster

[see

tabl

e 1]

chec

k th

e re

sist

ance

by

test

er [s

ee ta

ble

1]

chec

k th

e re

sist

ance

by

test

er [s

ee ta

ble

1]

chec

k th

e re

sist

ance

by

test

er [s

ee ta

ble

2]

(*2

)

SEN

SOR,

TEM

P. O

UTD

OO

R

SEN

SOR,

TEM

P. S

UCT

ION

Def

rost

tem

p.

sens

or E

rror

SEN

SOR,

TEM

P. D

EFRO

ST

Dis

char

ge te

mp.

se

nsor

Err

orSE

NSO

R, T

EMP.

DIS

CHA

RGE

A6

A7

A8 C2

Pow

er m

odul

e Er

ror

POW

ER M

OD

ULE

C0

if th

e se

nsor

is fa

ulty

, it s

houl

d be

repl

aced

.

if th

e se

nsor

is fa

ulty

, it s

houl

d be

repl

aced

.

if th

e se

nsor

is fa

ulty

, it s

houl

d be

repl

aced

.

if th

e se

nsor

is fa

ulty

, it s

houl

d be

repl

aced

.

POW

ER M

OD

ULE

sho

uld

be re

plac

ed.

TRO

UBL

ESH

OO

TIN

GER

RO

RC

OD

ES

UN

IT

– 9 –


ELECTRIC CHARACTER

[table 1] Sensor, temp. defrost Sensor, temp. outdoor Sensor, temp. suction Sensor, temp. outgoing and return circulating water

Temp.(°C) Resistance(kΩ)0 315 24

10 1915 1520 1225 1030 835 6.740 5.545 4.650 3.855 3.2

[table 2] Sensor, temp. discharge

Temp.(°C) Resistance(kΩ)10 1,00020 60035 30040 25050 16080 50

DISPLAY OF ERRORS IN THE PAST

For a unit display board • Press and hold the PUMP SW. and RESET SW. at the same time for 5 seconds to display a past error code and its sequence number. The PUMP SW. can then be used to select between a maximum of 8 past error codes to display. (If there are no er-ror codes, “ - - ” is displayed.)

1. Display method

2. Display cancellationFor a unit display board • While an error code is being displayed, press and hold the PUMP SW. and RESET SW. at the same time for 5 sec-onds to cancel the error code display and turn off the display. Alternatively, if no operations are performed for 5 minutes, the error code display is automatically cancelled and the display turned off. While an error code is being displayed, press and hold the reset switch for 10 seconds or more to delete all past error codes. The display turns to “ - - ”.

– 10 –


CHECK FOLLOWING STEPS

[fig. 3] Voltage of PUMP on the PCB(CONTROLLER)

7 PUMP

FUSE CF3(250V T5A)

B W

+ -

0 Ω

PCB(CONTROLLER)

[fig. 2] Voltage of fan motor on the PCB(CONTROLLER)[fig. 1] Continuity of current fuse on the PCB (CONTROL-LER)

9 FAN MOTOR

FUSE CF4(250V T3.15A)

BL Y W B R

+ + + +-

0 Ω

PCB(CONTROLLER)

[fig. 4] Resistance of 4-way valve coil

Take off the connector and check the resistance 4-way valve coil.

Measure voltage between the connector pins of con-nector 9 . Connector 9 shall be checked during heat-ing or cooling operation.Measure voltage as follows without taking off the con-nector 9 .

Measure voltage between the connector pins of con-nector 7 . Connector 7 shall be checked during heat-ing or cooling operation.Measure voltage as follows without taking off the con-nector 7 .

PCB (CONTROLLER) is Normal

PCB (CONTROLLER) is Normal

between red + and black approx. DC200~370Vbetween yellow + and black approx. DC3~7Vbetween white + and black approx. DC15V

between black + and white approx.AC207~253V

Fan motorError

Pump Error

0Ω

FUSE CF3(250V T5A)

PCB(CONTROLLER)

FUSE CF1(250V T25A)

0Ω

4-way valve coil

1360Ω

– 11 –


CHECK FOLLOWING STEPS

[fig. 7] Resistance of POWER MODULE

[fig. 6] Resistance of the circulation pump[fig. 5] Resistance of the heater for tank

2

PCB(CONTROLLER)

WW

2.6kΩ

7

PCB(CONTROLLER)

140Ω

BLGRORP

: BLUE: GRAY: ORANGE: PINK

ORP

BLGR

below 100kΩ

– 12 –


WIRING DIAGRAM

R: RED

G: GREEN

P: PINK

GR: GRAY

OR: ORANGE

Y : YELLOW

B : BLACK

W: WHITEBL: BLUE

COLOR OF WIRE

4 WAY V.

HEATER

EXP.V.

PCB(DISPLAY)

MODE SW.

RESET SW.

PUMP SW.

3 12※※ ※

TERMINAL

BLOCK

W

B

G/Y

LN

※※ ※ ※W

※B※B※

G/Y

R

1

R W B BL B ORGR P B

COMPRESSOR

POWER

SENSOR(TEMP., SUCTION)

SENSOR(TEMP., DEFROST)

SENSOR(TEMP., DISCHARGE)

SENSOR(TEMP., OUTDOOR)

MOTOR

(FAN)

PUMP

PCB(CONTROLLER)

SENSOR(TEMP., RETURN)

SENSOR(TEMP., OUTGOING)

REACTOR

※※

3

74

2

24

23

19

18

21 20

9

12

14

13

BLOR

GR

P

(U)S(V)R(W)C

PCB

(POWER MODULE)

CONNECTING

CABLE

CONNECTING

CABLE

B

B

B B B B

BB

CN1

CN1 CN2

FUSE

250V

T3.15A

FUSE

250V

T5A

G/Y

BL

BL

W BW W

WPYA100LAWPYA080LA

– 13 –


MONITOR DISPLAY METHOD

Switch “ ON ” the MODE SW. 4 on the unit PCB (DISPLAY). 1. The monitor number and monitor data are alternately displayed.Push the PUMP SW. of the unit PCB (DISPLAY). 2. Every time the PUMP SW. is pressed the display changes in the sequence below.Switch “ OFF ” the MODE SW. 4 after completing the check.3.

ON 4321

OFF

MODE SW.

Monitor display

PCB (DISPLAY)

PUMP SW.

Monitor display contents •

Monitor Monitor data display contentsd0 Circulating water return temperature Units of 1°Cd1 Compressor operating frequency Units of 1Hzd2 Discharge temperature Units of 1°Cd3 Power consumption value Units of 100Wd4 Interface voltage Units of 0.1Vd5d6 Ambient air temperature Units of 1°Cd7 External thermistor temperature Units of 1°Cd8 Suction temperature Units of 1°Cd9 Circulating water outgoing temperature Units of 1°C

FREEZE PREVENTION SETTING

If the outside temperature falls below about 2°C, freeze pre- •vention operation is possible depending on the unit MODE SW. 1

1.No freeze prevention operation (When using anti- freeeze) 2. Freeze prevention operation (When the outdoor temperature falls below about 2°C , the circulating water is warmed and circulated.)

CHARGE THE CIRCULATION WATER AND AIR PURGE IN WATER CIRCUIT

When you push PUMP SW on display PCB, the water pump is started to •operate to circulate the water. The each digital segment of right side on display PCB lights in sequence during operating the pump.The pump is automatically stopped after operating for 10 minutes. •If it is not enough to let the air out of water circuit, please push PUMP SW once again after the pump stopped. When you would like to stop operating the pump before the pump is automatically stopped, please push PUMP SW once again.

PUMP SW.

ON 4321

OFF

ON 4321

OFF

For1 For2

MODE SW. position

PCB(DISPLAY)The factory setting is “ ON : 2. Freeze prevention operation ”.

OFF :

ON :

– 14 –

ELECTRIC CIRCUIT DIAGRAM

WPYA100LAWPYA080LA

– 15 –

EXPLODED VIEW

Det

ail v

iew

H

I

D

A

M

K

A

M

K

D

E J

C

C

FG

L

E

F

B

B

HI

GL

J

3

1

6

7

4

1145

53

55

3230

3346

31 47

52

56

4352

54

51

24

54

5749

49

49

5214

49

24

5038

840

48 13

22

23

12

5

10

20

39

21

18

34

37

35

2825

27

29

41

42

28

17

9

1944

26

16

15

36

2

28 29 1827 20

11

4 10

7 6

WPYA100LAWPYA080LA

– 16 –

PARTS LIST

No. PARTS NAME PARTS No.1 OUTLET GRILLE 301125202 FRONT PANEL ASSY.(LEFT) 206003503 FRONT PANEL ASSY.(RIGHT) 206003804 TOP PANEL ASSY. 206004015 PROPELLER FAN 526301906 MOTOR 301125807 BRACKET,MOTOR 206052808 SENSOR (TEMP.OUTDOOR) 301143609 BACK PANEL ASSY. 20600421

10 BOTTOM PANEL ASSY. 2060044111 CONDENSOR ASSY. 2060562112 COIL,EXPANSION VALVE 5191453113 EXPANSION VALVE 3011263014 SENSOR (TEMP.DEFROST) 3011435015 TANK COVER (TOP) 2060593016 TANK COVER (SIDE) 2060592017 HEAT EXCHANNGER ASSY. 2060679118 PUMP ASSY. 2060596019 TANK 3011264020 COMPRESSOR 3011307021 VIBRATION PROOF RUBBER 3000111022 SENSOR (TEMP.DISCHARGE) 5110087023 SENSOR (TEMP.SUCTION) 3008990024 SENSOR (TEMP.CIRCULATING WATER) 3011298025 REACTOR 3011253026 TERMINAL BLOCK 3011297027 PCB (DISPLAY) 30051560

28PCB (CONTROLLER) with CASE (WPYA100LA) 30112540+20605320PCB (CONTROLLER) with CASE (WPYA080LA) 30116780+20605320

29 PCB (POWER MODULE) ASSY. WITH HEAT SINK 2060534130 RUBBER HOSE (FOR RELEIF VALVE) 3011442031 RUBBER HOSE (FOR AIR PURGE VALVE) 3011443032 HOSE BAND (FOR RELIEF VALVE) 3008448033 HOSE BAND (FOR AIR PURGE VALVE) 6861609034 SOUND PROOF MATERIAL1 2061196035 SOUND PROOF MATERIAL2 2061197036 SOUND PROOF MATERIAL3 2061198037 SOUND PROOF MATERIAL4 2061199038 SOUND PROOF MATERIAL5 2061200039 SOUND PROOF MATERIAL6 2061201040 OUTDOOR THERMISTOR HOLDER 2004010041 FUSE(5A) 4001641042 FUSE(3.15A) 4001640043 COIL, 4-WAY VALVE 3011261044 TANK HEATER 3011437045 RELIEF VALVE 3011267046 AIR PURGE VALVE 3011268047 PRESSURE GAUGE 3011269048 4-WAY VALVE 3010409049 PACKING B 3011303050 PACKING C 30113060

WPYA100LAWPYA080LA

– 17 –

PARTS LIST

No. PARTS NAME PARTS No.1 Regulation card 20612051

UTW-SCB*A (Control box)

No. PARTS NAME PARTS No.51 O RING (P4) 0110712052 O RING (P6) 0110760053 O RING (P14) 0110715054 QUICK FASTENER 5277570055 QUICK FASTENER 0063360056 QUICK FASTENER 0060169057 DRAIN PLUG 30078010

DISASSEMBLY PROCESS

WARNING Before servicing the unit, the power supply switch OFF,

Then, do not touch electric parts for 10 minutes due to the risk of electric shock.

１.Appearance

２.SERVICE PANEL removal

Remove the screws. Remove the SERVICE PANEL. (3 places) by sliding downward.

Screw

Hook (4 places)

-18-

３.MAIN PCB removal

Remove the screw for fixing Remove the screw for fixing the cover. the panel. (1 place) (1 place)

Open the panel for hanging PCB. Remove the fire prevention cover.

Remove connectors. Remove the screws for PCB box (2 places) to detach PCB box whole.

４. PCB (DISPLAY) removal

Remove the locking spacers. (3 places) Remove the PCB (DISPLAY).

Panel for hanging PCB Open Fire prevention cover

Screw

Screw for fixing the cover

Hook (2 places)

Hook (2 places)

Locking spacer

Screw

-19-

５.TOP PANEL removal

Remove the screws. (4 places)Remove the TOP PANEL.

６.REACTOR removal

Remove the connectors.Remove the screws. (4 places)Remove the REACTOR.

７.MODULE PCB removal

Remove the screws. (2 places) Remove the screws. (4 places)Remove the cover. Remove MODULE PCB with the heat sink.

Screw

ScrewConnector

Fire protectioncover

Screw

Screw

-20-

８.SOLENOID COIL (4way valve) removal

Remove the screw. (1 place)Remove the SOLENOID COIL (4way valve).

９.EEV COIL removal

Remove the EEV COIL by hand.

１０.FRONT PANEL(LEFT) removal

Remove the screws. (8 places)Remove the FRONT PANEL(LEFT).

Screw

Screw

-21-

１１.FAN MOTOR removal

Remove the fixing nut. Remove the cable for the FAN MOTOR. Remove the PRPELLER FAN. from the hooks in the fan bracket. (3 places) Note at the installation.

Tightening torque is from 4.0 to 6.0 N・m.

Note at the installation.

Remove the screws. (4 places) Remove the FAN MOTER.

Nut Cable for the FAN MOTOR Cable for the SENSOR (TEMP.OUTDOOR)

Screw

Hook

-22-

１２ .FAN BRACKET and SEPARATE WALL removal

Remove the screws. (2 places) Remove the FAN BRACKET.

Remove the screws. (3 places) Remov e the screws. (3 places)

Remove the SEPARATE WALL.

Screw Earth screw

Screw

-23-

１３.COMPRESSOR removal Precautions for exchange of Compressor.

Do not allow moisture or debris to get inside refrigerant pipes during work.

Procedure for Compressor removal.

Collect the refrigerant from the CHECK JOINT. Start the following work after completely collecting the refrigerant. Do not reuse the refrigerant that has been collected.

Remove the SENSOR (TEMP.DISCHARGE) Remove the COMPRESSOR COVER④,and the SENSOR. (TEMP.SUCTION) COVER⑤, and COVER⑥ (※see chapter 25 and 26)Remove the COMPRESSOR COVER①,COVER② , and COVER③.

Remove the nut. Remove the connectors. Remove the TERMINAL COVER. [ S(U) : BLACK, R(V) : WHITE, C(W) : RED ]

Check joint

Cover①

Cover②

Cover③ Cover⑤

Cover④

Cover⑥

Nut

-24-

Cut the Discharge pipe Cut the Suction pipe Removethe COMP NUTS. (3 places) in this range. in this range. Remove the COMPLESSOR by lifting.

Caution ・Keep the shape better. ・There is a possibility of catching fire to oil when removing by the welding without cutting.

Procedure for compressor installation.Reverse procedure to removing the compressor.

Precautions for installation of compressor.(1) When brazing, do not apply the flame to the terminal.

(2) When brazing, be sure to replace the air in the pipe with nitrogen gas to prevent forming oxidization scale.

Range Range

Nut

-25-

１４.CIRCULATION PUMP removalPrecautions for exc hange of Pump.

Drain in the water - cycle before work.

Procedure for drain in the water - cycle.

Install a drain pan or drain hose to the DRAIN PLUG.Open the DRAIN PLUG and drain.

Remove the screw for the cover. (1 place) Remove the cover. Remove the nuts for pipes. (2 places) Remove the screw for the pump. (1 place)

Remove the CIRCULATION PUMP.

Note at the installation.

When take off Nut, remove a packing together.


Screw for the pump

Nut

Cover

Screw for the cover

Drain plug

Loose for open

-26-

１５.TANK COVER removal

Remove the screw. (1 place) Remove the screws. (6 places)Remove the TANK COVER (TOP). Remove the TANK COVER (SIDE).

１６.TANK HEATER removal

Remove the TANK HEATER by hand and exchange.

Screw Screw

Screw

Tank heater

-27-

１７.TANK removal

Remove the nut for the tank. Remove the screw. (2 places)

Note at the installation Remove the panel for fixing the tank. When take off Nut, remove a packing together. Remove the TANK.


１８.BACK PANEL removal

Remove the screw. (1 place) Remove the insulation sheet Remove the insulation sheetRemove the terminal cover. for the terminal. for the tank.

Remove the screws. (16 places) Remove the BACK PANEL.

Nut Screw

Insulation sheet

Screw

Insulation sheet

Screw

Screw×4

Screw

Screw

Screw×4

-28-

１９ .HEAT EXCHANGER removal

Remove the screws. (2 places) Remove the panel for fixing the terminal blockwith the terminal block.

Remove the EEV COIL. (see chapter 9)Remove the pipes in the refrigerant - cycle by brazing. (2 places, see chapter 30)Remove the nuts. Remove the HEAT EXCHANGER by lifting.Note at the installation.

When take off Nut, remove packing together.


Screw

Panel for fixing the terminal block

Brazing point

Nut

-29-

２０ .MANOMETER removal

Remove the quick fastener by pulling.Remove the MANOMETER.

２１.PRESSURE RELIEF VALVE removal

Remove the clip for the hose. Remove the quick fastener by pulling.Remove the hose. Remove the PRESSURE RELIEF VALVE.

Quick fastener

Quick fastener

Hose band Hose

-30-

２２.AIR PURGE VALVE removal

Remove the clip for the hose Remove the AIR PURGE VALVERemove the hose. by using 2 spanners.

２３.SENSOR (TEMP.OUTDOOR) removal

Remove the SENSOR (TEMP.OUTDOOR) by hand.

２４.SENSOR (TEMP.DISCHARGE) removal

Remove the SENSOR (TEMP.DISCHARGE) with the holder.

Hose band Hose

2 spanners

Sensor

Sensor

Sensor and Holder

Holder

-31-

２５.SENSOR (TEMP.SUCTION) removal

Remove the THERMISTOR SPRING.Remove the SENSOR (TEMP.SUCTION).

２６.SENSOR (TEMP.DEFROST) removal

Remove the COMPRESSOR COVER① , COVER②, COVER③, and COVER④. (See chapter 14)Remove the SENSOR (TEMP.DEFROST) with the holder.

２７.SENSOR (TEMP.CIRCULAITING WATER OUTGOING) removal

Remove the THERMISTOR SPRING.Remove the SENSOR (TEMP. CIRCULAITING WATER OUTGOING).

Sensor

Sensor

Sensor Sensor and Holder

Holder

-32-

２８.SENSOR (TEMP.CIRCULAITING WATER RETURN) removal

Remove the THERMISTOR SPRING.Remove the SENSOR (TEMP. CIRCULAITING WATER RETURN).

２９.Precautions for exchange of refrigerant - cycle parts and pipes.

(1) During exchange the following parts shall be protected by wet rag and not makes the allowable temperature or more.(2) Remove the heat insulation when there is the heat insulation near the welding place.

Move and cool it when its detaching is difficult.(3) Cool the parts when there are parts where heat might be transmitted besides the replacement part.(4) Interrupt the flame with fireretardant board when the flame seems to hit the following pats directly.(5) Do not allow moisture or debris to get inside refrigerant pipes during work.(6) When brazing, be sure to replace the air in the pipe with nitrogen gas to prevent forming oxidization scale.

Part nameAllowable

temperaturePrecautions in work

EXPANSION VALVE 120Remove the coil before brazing.And install the coil after brazing.Detaching necessity Sensor.

4WAY VALVE 120Remove the coil before brazing.And install the coil after brazing.

Sensor

-33-

RA-70-[4]

Printed in Japan

ISSUED DEC.2009

REVISED MAR.2010

REVISED APR.2010

REVISED NOV.2012

MONOBLOC type

Documents

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