Mitsubishi PEH-RP8, PEH-10MYA SERVICE MANUAL

TECHNICAL & SERVICE MANUAL

AIR-COOLED SPLIT-TYPE
PACKAGED AIR CONDITIONERS

For use with the R410A

HEAT PUMP PEH-RP8MYA

PEH-RP10MYA

Models

<Indoor unit>

2004

Page

Contents

1 SAFETY PRECAUTION ..........................................................................................................

2 PART NAMES AND FUNCTIONS............................................................................................

3 SPECIFICATIONS ..................................................................................................................

4 OUTLINE AND DIMENSIONS................................................................................................

5 ELECTRICAL WIRING DIAGRAM.........................................................................................

6 TECHNICAL DATA ................................................................................................................

[1] Capacity/Input Ratio against Changes in Room Airflow Rate...........................................

[2] Capacity table
[3] Correction factors

...................................................................................................................

..............................................................................................................

[4] Airflow Characteristic Curves............................................................................................

[6] Standard Operation Data ................................................................................................

NC Curve (Indoor unit)......................................................................................................

7 SERVICE DATA......................................................................................................................

[1] Appearance of Equipment ................................................................................................

[2] Internal Construction.........................................................................................................

[3] Refrigerant Circuit .............................................................................................................

8 FUNCTION OF SWITCH ON INDOOR CIRCUIT BOARD.....................................................

[1] DIP SW1 for model Selection (DIP SW1 has been set at factory)....................................

[2] DIP SW2 for Capacity Setting (DIP SW2 has been set at factory) ...................................

[3] DIP SWE for Emergency Operation..................................................................................

9 TEST RUN ..............................................................................................................................

[1] Before test run ..................................................................................................................

[2] Test run procedures ..........................................................................................................

[3] Self-diagnosis ...................................................................................................................

[4]

Remote controller diagnosis

.............................................................................................

[5] Center of Gravity (Indoor unit) ..........................................................................................

[7]

1

3

5

7

10

11
11
12
16
17

18

20
20
21
21

22
22
22
22

23
23
23
25
27

17

19

- 1 -

1

SAFETY PRECAUTION

Cautions for units utilizing refrigerant R410A

CAUTIONS RELATED TO NEW REFRIGERANT

Use new refrigerant pipes.

Make sure that the inside and outside of refrige­rant piping is clean and it has no contamination
such as sulfur hazardous for use, oxides, dirt,
shaving particles, etc.
In addition, use pipes with specified thickness.

Store the piping to be used during installation
indoors and keep both ends of the piping sealed
until just before brazing. (Leave elbow joints, etc.
in their packaging.)

Use ester oil, ether oil or alkylbenzene oil (small
amount) as the refrigerant oil applied to flares
and flange connections.

In case of using the existing pipes for R22, be careful with
the followings.

· Change flare nut to the one provided with this product.
Use a newly flared pipe.

· Avoid using thin pipes.

Charge refrigerant from liquid phase of gas
cylinder.

If the refrigerant is charged from gas phase, composition
change may occur in refrigerant and the efficiency will be
lowered.

Do not use refrigerant other than R410A.

If other refrigerant (R22 etc.) is used, chlorine in refrige­rant can cause deterioration of refrigerant oil etc.

Use a vacuum pump with a reverse flow check
valve.

Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil etc.

Use the following tools specifically designed for
use with R410A refrigerant.

The following tools are necessary to use R410A refrigerant.

Keep the tools with care.

If dirt, dust or moisture enter into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com­pressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigera­nt will change and the efficiency will be lowered.

Flare tool

Electronic refrigerant
charging scale

Vacuum pump adaptor

Size adjustment gauge

Gauge manifold

Torque wrench

Gas leak detector

Charge hose

Tools for R410A

Contamination inside refrigerant piping can cause deterio­ration of refrigerant oil etc.

If dirt, dust or moisture enter into refrigerant cycle, that can
cause deterioration of refrigerant oil or malfunction of com­pressor.

If large amount of mineral oil enter, that can cause deterio­ration of refrigerant oil etc.

Ventilate the room if refrigerant leaks during
operation. If refrigerant comes into contact with
a flame, poisonous gases will be released.

[1] Cautions for service

(1) Perform service after collecting the refrigerant left in unit completely.
(2) Do not release refrigerant in the air.
(3) After completing service, charge the cycle with specified amount of refrigerant.
(4) When performing service, install a filter drier simultaneously.

Be sure to use a filter drier for new refrigerant.

[2] Additional refrigerant charge

When charging directly from cylinder

· Check that cylinder for R410A on the market is syphon type.

· Charging should be performed with the cylinder of syphon stood vertically. (Refr igerant is charged from liquid phase.)

- 2 -

Unit

[3] Service tools

Use the below service tools as exclusive tools for R410A refrigerant.

No. Specifications

1 Gauge manifold ·Only for R410A

·Use the existing fitting

specifications

. (UNF1/2)

·Use high-tension side pressure of 5.3MPa·G or over.

2 Charge hose ·Only for R410A

·Use pressure performance of 5.09MPa·G or over.

3 Electronic scale
4 Gas leak detector ·Use the detector for R134a, R407C or R410A.
5 Adaptor for reverse flow check ·Attach on vacuum pump.
6 Refrigerant charge base
7 Refrigerant cylinder ·Only for R410A Top of cylinder (Pink)

Cylinder with syphon

8 Refrigerant recovery equipment

Gravimeter

- 3 -

2

PART NAMES AND FUNCTIONS

● Indoor Unit
PEH-RP8MYA
PEH-RP10MYA

Air intake duct flange

Air outlet duct flange

Air outlet

Air intake
(sucks the air inside the room into the unit)

● Operation buttons

PAR-20MAA

ON/OFF

CENTRALLY CONTROLLED

ERROR CODE

CLOCK

ON OFF

˚C

CHECK

CHECK MODE

FILTER

TEST RUN
FUNCTION

˚C

1Hr.

NOT AVAILABLE

STAND BY
DEFROST

FILTER

CHECK TEST

TEMP.

TIMER SET

This sets the ventilation fan speed.

VENTILATION button

Press this button to switch the cooling,
electronic dry (dehumidify), automatic
and heating modes.

OPERATION SWITCH button

This sets the room temperature. The
temperature setting can be performed
in 1: units
Setting range
Cooling 19: to 30:
Heating 17: to 28:

TEMP. ADJUSTMENT button

This switches between continuous
operation and the timer operation.

TIMER button

This switches between the operation
and stop modes each time it is pressed.
The lamp on this button lights during
operation.

ON/OFF button

Only press this button to perform an
inspection check or test operation.
Do not use it for normal operation.

CHECK-TEST RUN button

This switch the horizontal fan motion
ON and OFF.

(Not available for this model.)

LOUVER button

This adjusts the vertical angle of the
ventilation.

AIR DIRECTION button

This resets the filter service indication
display

FILTER button

This sets the current time, start time
and stop time.

TIME SETTING button

This sets the ventilation fan speed.

FAN SPEED button

(Not available for this model.)

- 4 -

Caution

● Only the Power display lights when the unit is stopped and power supplied to the unit.

● When the central control remote control unit, which is sold separately, is used the ON-OFF button, operation switch button

and TEMP. adjustment button do not operate.

● “NOT AVAILABLE” is displayed when the Air speed button are pressed.This indicates that this room unit is not equipped with
the fan direction adjustment function and the louver function.

● When power is turned ON for the first time, it is normal that “H0” is displayed on the room temperature indication (For max.
2minutes). Please wait until this “H0” indication disappear then start the operation.

CENTRALLY
CONTROLLED display

This indicates when the unit is con-

trolled by optional features such as
central control type remote controller.

TIMER display

This indicates when the continuous

operation and time operation modes
are set.

It also display the time for the timer

operation at the same time as when
it is set.

OPERATION MODE display

This indicates the operation mode.

STANDBY display

The [STANDBY] symbol is only dis-

played from the time the heating
operation starts unit the heated air
begins to blow.

DEFROST display

This indicates when the defrost oper-

ation is performed.

CHECK display

This indicates when a malfunction

has occurred in the unit which should
be checked.

CLOCK display

The current time , start time and stop
time can be displayed in ten second
intervals by pressing the time switch
button.The start time or stop time is
always displayed during the timer
operation.

● Display

In this display example on the bot­tom left, a condition where all dis­play lamps light is shown for expla­nation purposes although this differs
from actual operation.

Operation lamp

This lamp lights during operation,
goes off when the unit stops and
flashes when a malfunction occurs.

POWER display

This lamp lights when electricity is
supplied to the unit.

SET TEMPERATURE display

This displays the selected setting
temperature.

AIR DIRECTION display

This displays the air direction.

ROOM TEMPERATURE display
The temperature of the suction air

is displayed during operation.The

display range is 8°C to 39°C.The
display flashes 8°C when the actual
temperature is less than 8°C and
flashes 39°C when the actual tem­perature is greater than 39°C.

display

This display lights in the check mode
or when a test operation is per­formed.

CHECK MODE

TEST RUN

This lamp lights when the filter need
to be cleaned.

AIR SPEED display

The selected fan speed is displayed.

FILTER display

PAR-20MAA

ON/OFF

CENTRALLY CONTROLLED

ERROR CODE

CLOCK

ON OFF

˚C

CHECK

CHECK MODE

FILTER

TEST RUN
FUNCTION

˚C

1Hr.

NOT AVAILABLE

STAND BY
DEFROST

FILTER

CHECK TEST

TEMP.

TIMER SET

Specifications of air-source heat pump type packaged air conditioner

(Ceiling concealed type indoor unit)

Model name PEH-RP8MYA

PEH-RP8MYAService Ref.

PEH-RP8MYAService Ref.

PUHZ-RP8YHAService Ref.

Outdoor

unit

Indoor unit

Quantity Symbol

Capacity kcal/h

kW
Indoor side Dry bulb temperature/wet bulb temperature
Outdoor side Dry bulb temperature/wet bulb temperature

Power source

Power consumption kW

Operating current A
Remote controller temperature setting range °C
Airflow direction control

Type × Quantity

Airflow rate m

3

/min

External static pressure

Pa

Motor output kW
External finish

Unit (H × W × D) mm

Panel (H × W × D) mm
Heat exchanger type
Air filter
Insulation material
Refrigerant piping size Liquid/Gas

φ

mm

φ

mm

Drain piping size
Noise level dB(A)
Net weight kg

Minimum wire thickness

Circuit breaker

Operation control device (provided)

Decoration panel (Option)
Other mountable major options

Accessories

Special note, Non-standard specifications, etc.

1. The cooling and heating capacities are the maximum capacities that were obtained by operating in the above
air conditions and with a refrigerant pipe of about 5m.

2. The actual capacity characteristics vary with the combination of indoor and outdoor units. See the technical
informaition.

3. The operating noise is the data that was obtained by measuring it 1.5 m from the unit’s bottom in an anechoic
room. (Noise meter A-scale value)

4. The

5. Refer to the service manual of outdoor unit for the outdoor unit’s specifications.

figure of Electrical characteristic, Airflow rate, Noise level, indicates, at 50 Pa setting.

Cooling Heating

16,300 19,300

19.0 (10.0~22.4) 22.4 (10.0~25.0)
27 °C/19 °C 20 °C/–
35 °C/24 °C7 °C/6 ˚C

3N~ 380/400/415V 50Hz

0.65/0.65/0.65 0.65/0.65/0.65

1.12/1.12/1.12 1.12/1.12/1.12
19 ~ 30 17 ~ 28

–

Sirrocco fan × 2

60

50/150

0.75

Galvanizing

428 × 1380 × 650

–

Cross fin

Saran net

Polyethylene foam

9.52/25.4

25.4 (RC1)

49 (at 50 Pa)

70

1.6 mm
15 A

Remote controller: PAR-20MAA

–
–

Electrical characteristics

Fan

External dimension

External wiring

Composing parts

Notes:

Installation manual, Operation manual,

Remote controller

–

Air con-

dition

- 5 -

3

SPECIFICATIONS

PEH-RP10MYA

Cooling Heating

18,900 23,200

27 °C/19 °C 20 °C/–
35 °C/24 °C7 °C/ 6 °C

3N~ 380/400/415V 50 Hz

0.94/0.94/0.94 0.94/0.94/0.94

1.64/1.64/1.64 1.64/1.64/1.64
19 ~ 30 17 ~ 28

–

Sirrocco fan × 2

80

50/150

1.23

Galvanizing

428 × 1,580 × 650

–

Cross fin

Saran net

Polyethyene foam

12.7/28.58

25.4 (RC1)

53 (at 50 Pa)

80

1.6 mm
15 A

Remote controller: PAR-20MAA

–
–

Installation manual, Operation manual,

Remote controller

–

PUHZ-RP10YHA

PEH-RP10MYA

PEH-RP10MYA

22.0 (12.5~28.0) 27.0 (15.7~31.5)

Specifications of air-source heat pump type packaged air conditioner

(Ceiling concealed type indoor unit)

Model name

Service Ref.

Service Ref.

Service Ref.

Outdoor

unit

Indoor unit

Quantity Symbol

Capacity kcal/h

kW
Indoor side Dry bulb temperature/wet bulb temperature
Outdoor side Dry bulb temperature/wet bulb temperature

Power source

Power consumption kW

Operating current A
Remote controller temperature setting range °C
Airflow direction control

Type × Quantity

Airflow rate m

3

/min

External static pressure

Pa

Motor output kW
External finish

Unit (H × W × D) mm

Panel (H × W × D) mm
Heat exchanger type
Air filter
Insulation material
Refrigerant piping size Liquid/Gas

φ

mm

φ

mm

Drain piping size
Noise level dB(A)
Net weight kg

Minimum wire thickness

Circuit breaker

Operation control device (provided)

Decoration panel (Option)
Other mountable major options

Accessories

Special note, Non-standard specifications, etc.

1. The cooling and heating capacities are the maximum capacities that were obtained by operating in the above
air conditions and with a refrigerant pipe of about 5m.

2. The actual capacity characteristics vary with the combination of indoor and outdoor units. See the technical
informaition.

3. The operating noise is the data that was obtained by measuring it 1.5 m from the unit’s bottom in an anechoic
room. (Noise meter A-scale value)

4. The

5. Refer to the service manual of outdoor unit for the outdoor unit’s specifications.

figure of Electrical characteristic, Airflow rate, Noise level, indicates, at 50 Pa setting.

Electrical characteristics

Fan

External dimension

External wiring

Composing parts

Notes:

Air con­dition

- 6 -

(1) Indoor Unit

• Model PEH-RP8MYA

Note: When connecting duct to the inlet side, remove the air filter attached to the unit body , and mount

an air filter onto the inlet duct side separately.

AIR INLET SENSOR

REFRIGERANT PIPE

12.7

(1/2 BRAZE)

REFRIGERANT PIPE 25.4
(1 BRAZE)

AIR INLET

AIR OUTLET

POWER SUPPLY
WIRING HOLE 27
(AIR INLET SIDE)

CONTROLLER
WIRING HOLE 27
(AIR INLET SIDE)

CONNECT WIRE (PEH-PUH)
WIRING HOLE 27
(AIR INLET SIDE)

ACCESSORY PIPE
(USE FOR ONLY R410A)

9.52 (3/8 BRAZE)

DUCT EARTH POINT
(BOTH DUCT SIDE)

152

650

428

95

156

AIR INLET DUCT

FLANGE

24- 3.1 HOLES

34
31

1102

104

130130130130130130130130

31

344

20

15

7053050

130

130

42

42

DRAIN: Rc 1

CONTROL BOX

4- 12 HOLES

22- 3.1 HOLES

AIR OUTLET DUCT

FLANGE

33

562

382

25 100

100 25

1240

20

20

1280

15

40

120

4513013013013013013013045

40

1320

1000

120

1264

98250

14

(FOR HUNGING

BOLT M10)

<FIELD SUPPLY>

15

100

40

210 116

4235

46

55 55 156

1380

131 200 199

928

1240

20

530

13132

200

199

400

730

200

1280
1880

200

20

428500

25 75

(1)
(2)

(3)

(1) When connecting air inlet
(2) When installing the suspension fixtures prior to installation of the indoor unit without inlet duct
(3) When hanging the indoor unit directly without inlet duct

(A) Service space
(B) Suspension bolt pitch
(C) Air inlet
(D) Air outlet

(A)

(A)

(C)

(B)

(B)

(D)

- 7 -

4

OUTLINE AND DIMENSIONS

- 8 -

• Model PEH-RP10MYA

Note: When connecting duct to the inlet side, remove the air filter attached to the unit body , and mount

an air filter onto the inlet duct side separately.

(B)

730

200

530

25 75

928

428500

199

200
13132

(A)

400

20

(B)

1440
1480
2080

(C)

(D)

20

200

(1)
(2)

(3)

(A)

(1) When connecting air inlet
(2) When installing the suspension fixtures prior to installation of the indoor unit without inlet duct
(3) When hanging the indoor unit directly without inlet duct

(A) Service space
(B) Suspension bolt pitch
(C) Air inlet
(D) Air outlet

REFRIGERANT PIPE

28.6 (1-1/8 BRAZE)

15

20

42

156

130

344

152

AIR INLET

REFRIGERANT PIPE
(1/2 BRAZE)

130

95

42

33

12.7

AIR INLET SENSOR

650

210 116

562

DRAIN: Rc 1

104

66

40

100

1302

130130130130130130130130

34

130

66

26- 3.1 HOLES

AIR INLET DUCT

FLANGE

CONTROL BOX

20

423

FLANGE

5

45

130

40

220

46

428

55 55 156

DUCT EARTH POINT
(BOTH DUCT SIDE)

22- 3.1 HOLES

AIR OUTLET DUCT

7053050

15

CONTROLLER

100 25

25 100

382

AIR OUTLET

WIRING HOLE 27
(AIR INLET SIDE)

CONNECT WIRE
(PEH-PUH)
WIRING HOLE 27
(AIR INLET SIDE)

POWER SUPPLY
WIRING HOLE 27
(AIR INLET SIDE)

1480

130

1580
1520
1440 40
1000

1464

20

131 200 199

45130130130130

220

15

4- 12 HOLES

(FOR HUNGING

<FIELD SUPPLY>

98

250

14

BOLT M10)

130