Mitsubishi PUH-8YKA, PUH-10YKA Service Manual

TECHNICAL & SERVICE MANUAL

[Model names]

PUH-8YKA
PUH-10YKA

No.HWE07040

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

CONTENTS

1.

COMBINATION OF INDOOR AND OUTDOOR UNITS

···2

2. SAFETY FOR USE ·········································3

3. SAFETY PRECAUTIONS·······························5

4. DATA ·······························································7

5. SOUND DATA ·················································8

6. OUTLINES AND DIMENSIONS ······················9

7. WIRING DIAGRAM·······································10

8. REFRIGERANT SYSTEM DIAGRAM ···········11

9. SYSTEM CONTROL·····································12

10. TEST RUN·····················································14

11. CONTROL ·····················································16

12. GROUP CONTROL ·······································29

13.

NOTES FOR M-NET <MELANS> WIRING CONNECTION

····30

14. EMERGENCY OPERATION ··························32

15.

SELF-DIAGNOSIS AND TROUBLESHOOTING

···34

16. SIMPLE PARTS CHECK METHOD··············45

17. PARTS NAME ···············································46

18. OPTIONAL PARTS ·······································48

July 2007

2

1 COMBINATION OF INDOOR AND OUTDOOR UNITS

Types of connected indoor units

Outdoor Unit List

Outdoor unit

PUH-8YKA

PUH-10YKA

Model name Service manual No.

PEH-8GA

PEH-16GA
PEH-10GA

PEH-20GA

Specification

Model name

PUH-8YKA

PUH-10YKA

PUH-8YKA.TH

PUH-10YKA.TH

Indoor unit

HWE07030

HWE07030

Standard Salt-resistant

PUH-8YKA.TH-BS

PUH-10YKA.TH-BS

3

2 SAFETY FOR USE

Before conducting installation work, please read this ''SAFETY FOR USE'' carefully

for

correct installation.

Since the caution items shown here contain important description relative to safety, please

observe them without fail.

After reading, please keep it with you together the Instruction Manual, and read it again at the

movement of the unit.

The unit should not be installed by the user.

If the unit is installed improperly, explosion, water
leakage, electric shock or fire may be result.
Consult your dealer or specialist subcontractor for
repair and movement.

For installation, conduct the work correctly by
following the Installation Manual.

Improper installation may cause a fire, electrical shock
or water leakage.

Install the unit on a spot sufficiently durable against
the unit weight.

Insufficient durability can cause an injury by the falling
down of unit.

All electric work must be performed by licensed
technician, according to local regulations and the
instructions given in this manual.

The units should be powered by dedicated power lines.
Power lines with insufficient capacity or improper
electrical work may result in electric shock or fire.

Use only the specified cables for wiring. The
connections must be made secured without
tension the terminals.

Improper connection or fastening can cause a fire or
electrical shock.

The unit should be installed according to the
instructions in order to minimize the risk of damage
from earthquakes, typhoons or strong winds.

Improper installation work can cause an injury by the
falling down of the unit.

The outdoor unit must be installed on stable, level
surface, in a place where there is no accumulation
of snow , leaves or rubbish.
The outdoor unit should be installed in a location
where air and noise emitted by the unit will not
disturb the neighbors. The indoor unit should be
securely installed.

When installing or relocating the unit, make sure that
no substance other than the specified refrigerant
enters the refrigerant circuit.
Any presence of foreign substance such as air can
cause abnormal pressure rise or explosion.

If the unit is loosely mounted, it may fall, and cause injury.

Never repair the unit, remodel or transfer it to
another site by yourself.

If they are performed improperly, water leakage, electric
shock or fire may result. If you need to have the unit
repaired or moved, consult your dealer.

Use only the specified refrigerant (R-22) to charge
the refrigerant circuit.
Do not mix it with any other refrigerant and do not
allow air to remain in the circuit.

Air enclosed in the circuit can cause high pressure resulting
in a rupture and other hazards.

Ventilate the room if refrigerant leaks during
Installation.

The refrigerant heated generates poisonous gas by
decomposition which can cause poisoning.

After completing installation work, make sure that
refrigerant gas has not leaked.

If refrigerant gas has leaked and exposed to fan heater,
stove, oven and so on, it may generate noxious gases.

Take a proper measure to suppress the critical
concentration of refrigerant if leaked when
installing the unit in a small room.

The limit density is made not to be exceeded even if the
refrigerant leaks by any chance.
You are necessary to ventilation measures to prevent
the accident. If the refrigerant leaks, hypoxia accident
may caused.
For the countermeasure to be taken, consult your
dealer.

The terminal block cover of unit must be firmly
attached to prevent entry of dust and moisture.

Improper mounting of the cover cause electric shock or
fire.

Use only optional parts authorised by Mitsubishi
Electric.

If the accessories are installed improperly, water
leakage, electric shock or fire may result.
Ask your dealer or an authorised company to install
them.

Erroneous handling gives a high possibility to induce serious results such as

death or heavy injury.

Erroneous handling may induce serious injury depending on the situation.

Warning

Warning

Caution

4

Caution

Never install on the place where a combustible gas
might leak.

The gas may ignite or explode when the gas leaks and
collects in surrounding of the unit.

When the unit is installed at telecommunication
centers or hospitals, take a proper provision
against noise.

The erroneous operation of air conditioner may be
induced by inverter equipment, independent power
device, medical equipment or communication
equipment.
While the erroneous operation of medical equipment or
communication equipment may caused by the air
conditioner.

For special use as for foods, animals/plants,
precision equipment or art objects, the applicability
should be confirmed beforehand.

As the use for the applications other than that
designed originally may result in the deterioration of the
quality. Consult your dealer in this regard.

Do not use the unit under a special atmosphere.

Installing the unit at the following places may cause a
trouble, a place where much machine oil, salt sonnet,
humidity or dust, spa district, a place full of sulfur gas,
volatile gas, or corrosive gas, a place near high
frequency processing machine.

Thermal insulation of the drain pipes is necessary
prevent dew condensation.

If the drain pipes are not properly insulated,
condensation will result and drip on ceiling, floor or other
possessions.

The drain piping must process by surely,and insulate
the drain piping not to be dewy.

When the room humidity exceeds 80% or when the
drain pipe is clogged, water may drip from the indoor
unit. The outdoor unit produces condensation during the
heating operation.
Make sure to provide drainage around the outdoor unit if
such condensation is likely to cause damage.

Install drain piping according to this Installation
Manual to ensure proper drainage.
Place thermal insulation on the pipes to prevent
condensation.

Improper drain piping may cause water leakage and
damage to furniture or other possessions.

The unit must be properly earth connected.

Do not connect the earth wire to gas pipe, city water
pipe, lightning rod or telephone earth wire.
Improper earth connection may cause electrical shock.

When installing at a watery place, provide an
electric leak breaker.

Failure to mount the electric leak breaker may cause
electrical shock.

Use breaker or fuse with proper capacity.
Make sure that there is a main power switch.

Using a wire or a copper wire instead of proper capacity
of fuse can cause fire or trouble.
Other appliances connected to the same line could cause
an overload.

For the power lines, use standard cables of
sufficient current capacity.

Otherwise, current leakage, overheating or fire may
occur.

When installing the power lines, do not apply
tension to the cables.

The tighten or loosen the connections may cause generate
heat and cause fire.

Remote controller is not pushed with the thing
sharpening ahead.

It occasionally causes the electric shock and the
breakdown.

Arrange the configuration of wiring not to bring up
the panel and terminal cover, and fasten the panel
and terminal cover securely.

The poor mounting of the panel or terminal cover may
cause the heat generation of the terminal connection,
a fire or electrical shock.

Do not wash the unit with water.

If washed with water, electrical shock may be caused.

Do not handle the switch with wet hands.

Otherwise electrical shock can be resulted.

Be very careful on handling the unit.

When carrying in outdoor unit, be sure to support it at
four points.
Carrying in and lifting with 3-point support may make
outdoor unit unstable, resulting in a fall of it.
The unit should not be carried by only one person if it is
more than 20kg.
Some units use PP bands for packing.
Do not use any PP band for delivery purpose.
Do not touch the heat exchanger fins with your bear
hands.
Doing so may cut your hands.
Be sure to safely dispose the packaging materials.
Packaging materials, such as catches and other metal
or wooden parts, may cause stabs or other injuries.
Tear off and discard plastic packing bags so that
children will not play any of them.
If children play with a plastic bag which was not torn off,
it may cause a risk of suffocation.

Do not leave the mounting base being damaged.

The damaged base may cause the falling down of
the unit which may give injury.

Turn on the main power switch more than 6 hours
before starting operation.

Do not turn the main power switch OFF during seasons
of heavy use, doing so can result in failure.

Do not touch the compressor or refrigerant piping
without wearing glove on your hands.

Touching directly such part can cause a burn or
frostbite as it becomes high or low temperature
according to the refrigerant state.

Do not touch the metal edges inside the unit
without wearing glove on your hands.

Touching directly it may injure your hands.

Do not remove the panel or the fan guard from
the outdoor unit when it is running.

You could be injured if you touch rotating, hot or high­voltage parts.

Do not operate the air conditioner without the air
filter set place.

Dust may accumulate, and cause a failure.

At emergency (if you smell something burning), stop
operation and turn the power source switch off.

Continuing the operation without eliminating the
emergency state may cause a machine trouble, fire, or
electrical shock.

After stopping operation, be sure to wait for five
minutes before turning off the main power switch.

Otherwise, water leakage or unit failure may occur.

Remote controller is not installed for the place
where direct sunshine strikes.

5

3 SAFETY PRECAUTIONS

3-1.

s Before installing the unit, make sure you read all the “Safety

precautions”.

s The “Safety precautions” provide very important points re-

garding safety. Make sure you follow them.

Symbols used in the text

Warning:

Describes precautions that should be observed to prevent danger of injury
or death to the user.

Caution:

Describes precautions that should be observed to prevent damage to the
unit.

Symbols used in the illustrations

: Indicates an action that must be avoided.
: Indicates that important instructions must be followed.
: Indicates a part which must be grounded.
: Beware of electric shock. <Color: yellow>

Warning:

Carefully read the labels affixed to the unit.

Warning:

• Ask the dealer or an authorized technician to install the air conditioner.

- Improper installation by the user may result in water leakage, electric shoc k,
or fire.

• Install the unit at a place that can withstand its weight.

- Inadequate strength may cause the unit to fall down, resulting in injuries.

• Use the specified cables for wiring. Make the connections securely so
that the outside force of the cable is not applied to the terminals.

- Inadequate connection and fastening may generate heat and cause a fire.

• Prepare for strong winds and earthquakes and install the unit at the speci­fied place.

- Improper installation may cause the unit to topple and result in injury.

• Always use an filter and other accessories specified by Mitsubishi Elec­tric.

- Ask an authorized technician to install the accessories. Improper installation

by the user may result in water leakage, electric shock, or fire.

• Never repair the unit. If the air conditioner must be repaired, consult the
dealer.

- If the unit is repaired improperly, water leakage, electric shock, or fire may

result.

• Do not touch the heat exchanger fins and metal edges.

- Improper handling may result in injury.

• If refrigerant gas leaks during installation work, ventilate the room.

- If the refrigerant gas comes into contact with a flame, poisonous gases will

be released.

• Install the air conditioner according to this Installation Manual.

- If the unit is installed improperly, water leakage, electric shock, or fire may

result.

• Have all electric work done by a licensed electrician according to “Elec-
tric Facility Engineering Standard” and “Interior Wire Regulations”and
the instructions given in this manual and always use a special circuit.

- If the power source capacity is inadequate or electric work is performed im-

properly, electric shock and fire may result.

• Securely install the terminal cover (panel).

- If the terminal cover (panel) is not installed properly, dust or w ater ma y enter

the outdoor unit and fire or electric shock may result.

• When installing and moving the air conditioner to another site, do not
charge the it with a refrigerant different from the refrigerant (R22) speci­fied on the unit.

- If a different refrigerant or air is mixed with the original refrigerant, the refrig-

erant cycle may malfunction and the unit may be damaged.

• If the air conditioner is installed in a small room, measures must be taken
to prevent the refrigerant concentration from exceeding the safety limit
even if the refrigerant should leak.

- Consult the dealer regarding the appropriate measures to prevent the safety

limit from being exceeded. Should the refrigerant leak and cause the safety
limit to be exceeded, hazards due to lack of oxygen in the room could result.

• When moving and reinstalling the air conditioner, consult the dealer or
an authorized technician.

- If the air conditioner is installed improperly, w ater leakage, electric shoc k, or

fire may result.

• After completing installation work, make sure that refrigerant gas is not
leaking.

- If the refrigerant gas leaks and is exposed to a fan heater, stove, oven, or

other heat source, it may generate noxious gases.

• Do not reconstruct or change the settings of the protection devices.

- If the pressure switch, thermal switch, or other protection device is shorted
and operated forcibly, or parts other than those specified by Mitsubishi Elec­tric are used, fire or explosion may result.

• To dispose of this product, consult your dealer.

• The installer and system specialist shall secure safety against leakage

according to local regulation or standards.

- Following standards may be applicable if local regulation are not available.

• Pay a special attention to the place, such as a basement, etc. where re­frigeration gas can stay, since refrigeration is heavier than the air.

• The appliance is not intended for use by young children or infirm per­sons without supervision.

• Young children should be supervised to ensure that they do not play
with the appliance.

• Never operate in open phase condition.
Control box may be broken.

3-2. BEFORE INSTALLATION

Caution:

• Do not install the unit where combustible gas may leak.

- If the gas leaks and accumulates around the unit, an explosion may result.

• Do not use the air conditioner where food, pets, plants, precision instru­ments, or artwork are kept.

- The quality of the food, etc. may deteriorate.

• Do not use the air conditioner in special environments.

- Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of

the air conditioner or damage its parts.

• When installing the unit in a hospital, communication station, or similar
place, provide sufficient protection against noise.

- The inverter equipment, private power generator, high-frequency medical

equipment, or radio communication equipment may cause the air conditioner
to operate erroneously, or fail to operate. On the other hand, the air condi­tioner may affect such equipment by creating noise that disturbs medical
treatment or image broadcasting.

• Do not install the unit on a structure that may cause leakage.

- When the room humidity exceeds 80 % or when the drain pipe is clogged,

condensation may drip from the indoor unit. P erform collective drainage work
together with the outdoor unit, as required.

3-3.

Caution:

• Ground the unit.

- Do not connect the ground wire to gas or water pipes, lightning rods, or

telephone ground lines. Improper grounding may result in electric shock.

• The reverse phase of L lines (L

1, L2, L3) can be detected (Error cord: 4103),

but the reverse phase of L lines and N line can be not be detected.

- Some electric parts should be damaged when power is supplied under the

miss wiring.

• Install the power cable so that tension is not applied to the cable.

- Tension may cause the cable to break and generate heat and cause a fire.

• Install an leak circuit breaker, as required.

- If an leak circuit breaker is not installed, electric shock may result.

• Use power line cables of sufficient current carrying capacity and rating.

- Cables that are too small may leak, generate heat, and cause a fire.

• Use only a circuit breaker and fuse of the specified capacity.

- A fuse or circuit breaker of a larger capacity or a steel or copper wire may

result in a general unit failure or fire.

• Do not wash the air conditioner units.

- Washing them may cause an electric shock.

• Be careful that the installation base is not damaged by long use.

- If the damage is left uncorrected, the unit may fall and cause personal injury

or property damage.

• Install the drain piping according to this Installation Manual to ensure
proper drainage. Wrap thermal insulation around the pipes to prevent
condensation.

- Improper drain piping may cause water leakage and damage to furniture

and other possessions.

• Be very careful about product transportation.

- Only one person should not carry the product if it weighs more than 20 kg.

- Some products use PP bands for packaging. Do not use an y PP bands f or a

means of transportation. It is dangerous.

- Do not touch the heat exchanger fins. Doing so may cut your fingers.

- When transporting the outdoor unit, suspend it at the specified positions on

the unit base. Also support the outdoor unit at four points so that it cannot
slip sideways.

• Safely dispose of the packing materials.

- Packing materials, such as nails and other metal or wooden parts, may cause

stabs or other injuries.

- Tear apart and throw away plastic packaging bags so that children will not

play with them. If children play with a plastic bag which was not torn apart,
they face the risk of suffocation.

BEFORE INSTALLATION AND ELECTRIC WORK

BEFORE INSTALLATION (MOVED) ­ELECTRICAL WORK

6

• Remote controller is not allowed to install for the place where direct
sunshine strikes.

3-4. BEFORE STARTING THE TEST RUN

Caution:

• Turn on the power at least 12 hours before starting operation.

- Starting operation immediately after turning on the main power switch can

result in severe damage to internal parts. Keep the power switch turned on
during the operational season.

• Do not touch the switches with wet fingers.

- Touching a switch with wet fingers can cause electric shock.

• Do not touch the refrigerant pipes during and immediately after opera­tion.

- During and immediately after operation, the refrigerant pipes are may be

hot and may be cold, depending on the condition of the refrigerant flowing
through the refrigerant piping, compressor, and other refrigerant cycle parts.
Your hands may suffer burns or frostbite if you touch the refrigerant pipes.

• Do not operate the air conditioner with the panels and guards removed.

- Rotating, hot, or high-voltage parts can cause injuries.

• Do not turn off the power immediately after stopping operation.

- Always wait at least five minutes before turning off the power. Otherwise,

water leakage and trouble may occur.

• Do not operate the air conditioner without the air filter set place.

- Dust may accumulate, and cause a failure.

• At emergency (if you smell something burning), stop operation and turn
the power source switch off.

- Continuing the operation without eliminating the emergency state may cause

a machine trouble, fire, or electric shock.

• Remote controller should be pushed with finger.

- It occasionally causes the electric shock and the breakdown.

7

4 DATA

4-1. REFILLING REFRIGERANT CHARGE (R-22 : kg)

4-2. COMPRESSOR TECHNICAL DATA

at 20˚C

Note:

If there is an insufficient amount of refrigerant in the system, the unit will behave in one of the following ways: 1) the discharge temperature of the unit rises abnor-

mally high, which is detected as an error, and the unit comes to a stop; 2) the discharge temperature of the compressor rises abnormally high, the unit goes into
the unload operation, which appears as the P8 error on the display, and the unit comes to a stop; or 3) the built-in thermostat on the compressor goes off and
stops the compressor. In either case, replenish and adjust the refrigerant. Once the unit goes into the unload operation, it takes at least 3 hours until normal opera­tion can be restored.

Model
PUH-8 0.0 0.3 0.9 1.5 2.1 2.6 3.2 3.8 4.4 5.0

PUH-10 0.0 0.3 0.9 1.5 2.1 2.6 3.2 3.8 4.4 5.0

7.5m 10m 15m 20m 25m 30m 35m 40m 45m 50m

Piping length (one way) Additional refriferant charge (R22) kg

Outdoor Unit
Compressor Model

Widing

Resistance

( )

T1-T2 1.59 1.23
T2-T3 1.59 1.23
T3-T1 1.59 1.23

PUH-8 PUH-10

ZR-94KC-TFD-501 ZR-125KC-TFD-501

8

5 SOUND DATA

5-1. OUTDOOR UNITS

(2) Position measurement

SPL

dB(A) 63Hz 125Hz 250Hz 500Hz 1000Hz 2000Hz 4000Hz 8000Hz

(1) Sound Levels

PUH-8

YKA

Cool
Heat

Cool
Heat

PUH-10

YKA

61
63
61
63

60
62
59
60

59
61
59
60

58
61
59
62

59
60
59
62

57
58
57
58

54
54
53
54

48
50
49
49

42
44
42
43

Model

PUH-8,10YKA

Measurement
point

OCTAVE BAND FREQ.Hz

1m

0.75m

9

6 OUTLINES AND DIMENSIONS

PUH-8YKA, PUH-10YKA

Unit : mm

Accessory

Conduit mouting plate

(Painted the same color as the unit body)

27 1pc.

34 1pc.

Tapping screw 4X12

Connection pipe

Packing.

Note 1.It is possible to change to

selecting the conduit mounting plate a,b.

4-10X20 Holes

Refrigerant pipe

PU-8YAKD

PUH-8YKA

25.4 (1 flange)

PU-10,12YAKD

PUH-10YKA

:

Knock out hole

Pressure gauge

(For option)

Refrigerant pipe

15.88(5/8 flare)

For the indoor unit

connection wiring

27 Hole

Note 1

For the power

supply wiring

40 Hole

For mounting

anchor bolt M8

[Field supply]

Air outlet

Air

inlet

Air inlet

Top view

Right side view

Front view

Left side view

Connection pipe

(Accessory)

28.6 (1-1/8 flange)

:

27 or 34 by

4pcs.

1pc.

1pc

a)

b)

615

3454734

585 1515

1480

1047

108.5 830 108.5

15

57

97

152 55

65

115 100

10

7 WIRING DIAGRAM

PUH-8YKA, PUH-10YKA

DISCHARGE TEMP

LIQUID PIPE TEMP

AUXILIARY RELAYX1TRTRANSFORMER

OVER CURRENT RELAY (COMPRESSOR)

MAGNETIC CONTACTOR (COMPRESSOR)

PRESSURE SWITCH (LOW PRESSURE)

63L

51C

52C

F1,F2 FUSE (15A 250VAC CLASS T)

SYMBOL NAME

FAN MOTOR (OUTDOOR)MF2,MF3

PRESSURE SWITCH (HIGH PRESSURE)

PRESSURE SWITCH (FOR CONTROL)

MC COMPRESSOR MOTOR

63H1

63H2

4-WAY VALVE

21S4

OUTDOOR UNIT

TH2

21 21

TH1

THERMISTOR

FUSE (6.3A 250VAC CLASS F)

SWITCH

AUXILIARY RELAY

SOLENOID VALVE

CRANK CASE HEATER (COMPRESSOR)

TERMINAL BLOCK

CH

SV1

TB1,3,8

CN3D

CN3 CN4

CN2

CN40

ON

4123

CNMNT

CNVMNT

LED (FOR SERVICE)

F01-F04

LED1

TH1

TH2

OUTDOOR

MAIN BOARD

X1

1

3

CN3S

OFF

ON

64123 5

OFF

ON

12

OFF

SW5

X01-X05

SW1-5

CN3N

SW1SW4SW3

X04

CONNECTOR (THERMISTOR FOR COND/EVA TEMP)

CONNECTOR (LEV)

CONNECTOR (CONNECT TO OPTIONAL M-NET ADAPTER BOARD)

CONNECTOR (CONNECT TO OPTIONAL M-NET ADAPTER BOARD)

CN4

CN40

CNMNT

CNVMNT

63H2

1

3

CN24

OFF

ON

64123 5

SW2

X03

CONNECTOR (EXTERNAL I/O)

CONNECTOR (NIGHT MODE/SNOW SENSOR)

CONNECTOR (OPARATION)

FUSE (6.3A 250VAC CLASS F)

CN51

CN3N

CN3D

F10-F30

N.F.BOARD

sure matching wiring and terminal.

2.Color of earth wire is yellow and green twisting.

3.Specification subject to change without notice.

4.This motor(*1) includes auto reset type internal thermostat.

5.Indoor and outdoor connecting wires (*2) are made with polarities, make

Note:1.The dotted lines show field wiring.

CN51

DC power supply

MAIN BOARD

Transmission

Circuit

X01

X02

X05

over current relays is installed. Therefore, do not

change factory set value of over current relays.

1.To protect compressor from abnormal current,

6. mark is connector. mark is terminal.
Caution,

CN34

SECONDARY

313131

TR

CN28

PRIMARY

CNS3

CNFG

31

OUTDOOR UNIT CONTROL BOX

(*1)(*1)

CH 63H1 63L

21S4
SV1

MF2 MF3

MC

Black

White
Red

CN23

1

51C

F01

F04

F03

CN22

1

3

3

135

1

3

CN26

CN21

CN25

1

CN53

CN52

3

1

CNFC1

1

3

5

6

6

52C

52C

C21C22

13
1

C11C12

13
1

1

CNFAN

135

CNFC2

F.C.

6

CNPOW

BOARD

CNOUT2

135 13

135

CNOUT1

F10

F20

F30

CNIN

7

CN20

7

L1NL2

N.F. BOARD

F02

1

L3

X1

F1

Green/Yellow

Blue
Black

IN
IN

OUT OUT

TB8

S3S2S1

TB3

F2

N

INDOOR UNIT

TO INDOOR UNIT

CONNECTING WIRES (*2)

(POLER)

PE

White

51C

Red

52C

TB1

L1 L2 L3

POWER SUPPLY

3N~PE

380/400/415V

50HZ

CIRCUIT BREAKER

PUH-8,10YKA : 50A

(FIELD SUPPLY)

11

8 REFRIGERANT SYSTEM DIAGRAM

PEH-8: O.D. 4.0

×

I.D. 3.0-L1000

PEH-10: O.D. 4.0

×

I.D. 3.0-L700

PUH-8:

O.D. 6.0

×

I.D. 4.0-L14

PUH-10:

O.D. 6.0

×

I.D. 4.6-L15

Outdoor heat exchanger

Thermistor

TH1

(liquid temp)

Thermistor TH2

(discharge temp)

Low pressure

switch

(with heat insulator)

Ø15.88mm

Refrigerant pipe

Refrigerant pipe

8HP:Ø25.4

10HP:Ø28.6mm

(with heat insulator)

Ball valve

Ball

valve

Service

port

4-wau value

Service port

High pressure switch

(protection)

High pressure

switch (control)

Service

port

Strainer

Capillary

tube

Capillary tube

O.D. 6.0

×

I.D. 4.0-L800

Capillary tube

O.D. 6.0

×

I.D. 4.0-L700

Compressor

Accumulator

Solenoid valve

Strainer Strainer

Indoor

heat

exchanger

Restrictor

valve

Distributor

Thermistor

TH2

Thermistor

TH5

Capillary

tube

Flared

connection

Brazing

connection

Brazing

connection

Flange

connection

Restrictor

valve

Refrigerant flow in cooling

R.V.coil

Heating:ON

Cooling:OFF

Refrigerant flow in heating

PUH-8YKA PUH-10YKA

12

9 SYSTEM CONTROL

9-1. OUTDOOR UNIT ADDRESS SETTINGS

9-2. EXAMPLES OF REFRIGERANT SYSTEM ADDRESS SETTING

9-3. CAPACITY CONTROL SETTING METHOD (PEH-16, 20 ONLY)

9-4. GROUPING BY USING LCD REMOTE CONTROLLER

••When controlling a group, the address must be set for each outdoor unit.

During address setting, set all the dip switches SW1 (3 - 6) on the board to
<when shipped from factory: all OFF>. (Address setting is not necessary for
1:1 or Free multi-component systems.)

•

Settings using SW1 are given below.

•

Please set the mutually different address, and pre vent the start up simultane­ously. (In case of connecting with PEH-16, 20)

(SW1)

OFF ON
1
2
3
4
5
6

1 –

2 Error history clear
3 Refrigerant system

address setting

4 ↑

switching

5 ↑

SW1 function

6 ↑

Model

Operation by switch manipulation

ON

––

Clear

OFF

Ordinary

Outdoor unit address

Settings 0 - 15

0

8

OFF ON
1
2
3
4
5
6

OFF ON
1
2
3
4
5
6

1

9

OFF ON
1
2
3
4
5
6

OFF ON
1
2
3
4
5
6

OFF ON
1
2
3

2

4
5
6

OFF ON
1
2
3

10

4
5
6

OFF ON
1
2
3

3

4
5
6

OFF ON
1
2
3

11

4
5
6

OFF ON
1
2
3

4

4
5
6

OFF ON
1
2
3

12

4
5
6

<Standard setting>

–

No.1
No.2

Outdoor unit refrigerant

system address

00
00

01~15

Ex.

Indoor unit

1

PEH-8, 10

2

PEH-16, 20

*

Set the refrigerant system address of one outdoor unit to 00 for the power supply

Outdoor unit

Remote controller
power supply unit

X

to the remote controller.
(The refrigerant system address is set to 00 when shipped from the factory.)
Do not duplicate the refrigerant system address settings within the same system.

OFF ON
1
2
3

5

4
5
6

OFF ON
1
2
3

13

4
5
6

OFF ON
1
2
3

6

4
5
6

OFF ON
1
2
3

14

4
5
6

OFF ON
1
2
3

7

4
5
6

OFF ON
1
2
3

15

4
5
6

With the PEH-16, 20 which has two outdoor units, the capacity can be controlled to
0%, 50% or 100%.
This is set by setting the outdoor unit side dip switches as shown in the table below
before turning the power on.

DipSW5-1

No.1 side outdoor unit

OFF

No.2 side outdoor unit

ON

Combination of indoor/outdoor unit can be controlled up to a maximum of 16 refrig­erant systems.

* In case of PEH-8, 10 * In case of PEH-16, 20

FGEJ

A

AA

2

B

2 2

A

BBB

1

D

C

1

EF GH IJ
A

No.1ANo.2ANo.1ANo.2ANo.1

B BB

2

A

No.2

2

1

C D

1

C Main remote controller D Subordinate remote controller
E Standard (Refrigerant address = 00)
F Refrigerant address = 01 G Refrigerant address = 02
H Refrigerant address = 03 I Refrigerant address = 14
J

B Indoor unitA Outdoor unit

Refrigerant address = 15

13

1 Wiring from the Remote Control
This wire is connected to TB5 (terminal board for remote controller) of the indoor unit (non-polar).

2 When a Different Refrigerant System Grouping is Used
Up to 16 refrigerant systems can be controlled as one group using the LCD remote

controller.

Notes:

1. In single refrigerant system, there is no need of wiring 2 .

2. LCD remote controller can be installed up to a maximum of 2 units for one group.

Grouping (16 outdoor units) [Connecting with PEH-16, 20]Grouping (16 outdoor units) [Example: PEH-8, 10]

PUH-8, 10

(00)

L1 L2 L3 N S1 S2 S3

PUH-8, 10

(01)

F

L1 L2 L3 N S1 S2 S3

PUH-8, 10

L1 L2 L3 N S1 S2 S3

PUH-8, 10

(15)

F

L1 L2 L3 N S1 S2 S3

(14)

OUT OUT

OUT OUT

OUT OUT

OUT OUT

IN IN

IN IN

IN IN

IN IN

B

A

A B C

A B C

C

PUH-8, 10

(00)

F

L1 L2 L3 N S2S1 S3S2S1 S3

PUH-8, 10

(14)

L1 L2 L3 N S2S1

PUH-8, 10

(15)

L1 L2 L3 N S2S1

PEH-8, 10

E

L1 L2 L3 N

PEH-8, 10

EF

L1 L2 L3 N

S3S2S1 S3

PEH-8, 10

EF

S3S2S1 S3

L1 L2 L3 N

D

B

C

A

A BC

A B C

A B C

A BC

A B C

A B C

A Power supply B Earth leakage breaker C Circuit breaker or local switch D Remote controller E Indoor unit F Outdoor unit (Address)

PEH-16, 20

EF

(TB4-1) (TB4-2)

S1 S2 S3 S1 S2 S3 L1 L2 L3 N

PEH-16, 20

EF

(TB4-1) (TB4-2)

S1 S2 S3 S1 S2 S3 L1 L2 L3 N

D

A BC

A BC

14

10 TEST RUN

10-1. OUTDOOR UNIT

(1) Test run

The test run can be carried out from the outdoor unit.

1. Checklist

• After the installation, piping setup, and wiring of the indoor and outdoor units is
complete, check that refrigerant is not leaking, the power and control wires are
not loose, and the poles are not reversed.

• Use a 500 V insulation resistance tester to make sure that the resistance be-
tween the power terminal and the ground is 1.0 MΩ or more. If it is less than

1.0 MΩ, do not operate the unit. * Absolutely do not touch the tester to indoor/
outdoor connection terminals S1, S2, and S3. An accident could occur.

• Make sure there is no malfunction in the outdoor unit. (If there is a malfunction,
you can diagnose it using LED1 on the board.)

• Check that the ball valve is fully open on both the liquid and gas ends.

• Check to make sure that L

order. Connecting them in the reverse order will trip the negative-phase pro­tector, and the unit will come to a stop, displaying the Error code F1.

• •Starting at least 12 hours before the test run, send current through the

crankcase heater. (If the current is running for a shorter period of time,
damage to the compressor could result.)

After the above checks are complete, carry out the test run as indicated in the
following outline.

1, L2, and L3 are connected in the correct phase

2. Starting and finishing the test run

• Procedure from the outdoor unit: start and stop the test run and set test run
mode (cooling/heating) using the SW4 dip switches on the board.

1 Set test run mode (cooling/heating) using SW 4-2.
2 The test run will begin when SW 4-1 is turned ON, according to the mode

selected by SW 4-2.

3 The test run is stopped when SW 4-1 is turned OFF.

<SW4>

OFF

ON

stop

1
2

cooling

Note:
Test run mode cannot be stopped during operation by using SW 4-2. (If the
operation mode is to be changed, first stop it using SW 4-1, then after c hang­ing the operation mode, start the test run again using SW 4-1.)

• If the 2-hour timer is set, the test run will stop automatically after 2 hours.

• During the test run, the room temperature display on the indoor unit will indi-

cate the temperature of the indoor unit piping.

• When you operate the test run from OC1, all trial runs are completed by OC1
→ IC1 → MA → IC1 → OC2.

PEH-16, 20(IC1) MA

OC1

OC2

run

heating

(2) How to handle problems with the test run

Error code list:

Remote controller

display

E0

E1, E2

E3
E4
E5
E6
E7
E8
E9
EA
EB
EC
ED
EE

F1

F8
A0
A2
A3
A6
A7
A8
EF
U2
U2
U3
U4
U6
UE
UL

F8
P1
P2
P4
P5
P5
P6
P6
P8

P9

details

MELANS display

6831,6834
6201,6202
6832,6833
6831,6834
6832,6833
6740,6843
6841,6842
6840,6843
6841,6842

6844
6845
6846
0403
0403

4103
4115
6600
6602
6603
6606
6607
6608

undefined

1102
1108
5104
5105
4101
1302
1300
4115
5101
5102
2503
2502
2500
1503
1504
1110
5103

Remote controller communication – reception error
Remote controller board error
Remote controller communication – transmission error
Remote controller communication – reception error
Remote controller communication – transmission error
Communication between indoor and outdoor units – reception error
Communication between indoor and outdoor units – transmission error
Communication between indoor and outdoor units – reception error
Communication between indoor and outdoor units – transmission error
Indoor/outdoor connection wiring error, indoor unit overload (5 units or more)
Indoor/outdoor connection wiring error (interference, loose)
Excessive time in use
Serial communication error
Serial communication error

Reverse phase, out of phase verification
Faulty input circuit
Duplicated M-NET address setting
M-NET error in PH/W transmission
M-NET bus busy
M-NET communication error with P transmission
M-NET error – no ACK
M-NET error- no response
Undefined error code
Outlet temperature error
CN23 Short-circuit Connector Unplugged
Open/short in discharge temp thermistor
Open/short in liquid temp thermistor
Compressor overcurrent interruption (51C operation)
High pressure error (63H1 operation)
Low pressure error (63L operation)
Power synchronous idle circuit error
Inlet sensor error
Open/short in liquid temp thermistor
Drain sensor error
Drain overflow protector operation
Water leak error (PDH only)
Freeze prevention operation
Surge prevention operation
Piping temperature error
Open/short in condenser/evaporater temp thermistor

Error details

Problem location

Remote Controller
Remote Controller
Remote Controller

Indoor unit
Indoor unit
Indoor unit

Indoor unit
Outdoor unit
Outdoor unit
Outdoor unit

Outdoor unit
Outdoor unit
Outdoor unit

M-NET board

Outdoor unit
Outdoor unit

M-NET board
M-NET board
M-NET board
M-NET board
M-NET board
M-NET board

–

Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit
Outdoor unit

Indoor unit

Indoor unit

Indoor unit

Indoor unit

Indoor unit

Indoor unit

Indoor unit

Indoor unit

Indoor unit

15

• Depending on the position of the SW2 switch on the outdoor unit board, the segments light up to indicate the running condition of the unit and the particulars of the chec

k

code.

SW2 setting

123456
000000

Operation mode/relay output

Item

tens place O: stop

C: cooling
H: heating
d: defrosting

units place 1: SV1

2: 21S4
4: 52C

When an error occurs, the error code
and error signal (*1) are displayed in
alternation.

Display contents

Relay output = SV1 + 21S4 + 52C

Ex. During cooling mode, when 52C and SV1 are ON: C5

011110

010110

110110

011100
111100

*1 Display system for error indicator

The indicator corresponds to the following numbers

0 ............. Outdoor unit

1 ............. Indoor unit No.1

2 ............. Indoor unit No.2

3 ............. Indoor unit No.3

4 ............. Indoor unit No.4

Outdoor unit control condition

Indoor unit control condition

Indoor unit control condition

Error code history 1
Error code history 2

(IC1)

(IC2)

(IC3)
(IC4)

Control mode display system

Indoor unit No.2
Indoor unit No.4

The error code (ex. U8, UA) and error indicator (*1) are displayed in alternation.

Indoor unit No.1
Indoor unit No.3
Outdoor unit

Display

0
1
2
3
4
5
6
7

Hot adjustment

Freeze prevention

Surge prevention
Compressor OFF

Control mode

Indoor unit

Ordinary

Defrosting

—

Heater ON

Outdoor unit

←
←
←
←
←
←
←
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