Mitsubishi Electric PFFY-P20VKM-ER1 Manuale operativo

TECHNICAL & SERVICE MANUAL

Indoor unit

[Model names] [Service Ref.]

PFFY-P20VKM-E

PFFY-P20VKM-ER1

PFFY-P25VKM-E

PFFY-P25VKM-ER1

PFFY-P32VKM-E

PFFY-P32VKM-ER1

PFFY-P40VKM-E

PFFY-P40VKM-ER1

No. OC404

REVISED EDITION-A

INDOOR UNIT

Floor Standing

Series PFFY

CONTENTS

1. TECHNICAL CHANGES.........................2

2. SAFETY PRECAUTION..........................2

3. PART NAMES AND FUNCTIONS.......... 6

4. SPECIFICATION..................................... 8

5. NOISE CRITERIA CURVES..................10

6. AIR OUTLET SELECTION....................11

7. OUTLINES AND DIMENSIONS............12

8. WIRING DIAGRAM...............................13

REFRIGERANT SYSTEM DIAGRAM......

10. TROUBLE SHOOTING.........................15

11. DISASSEMBLY PROCEDURE.............23

12. RoHS PARTS LIST...............................28

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

R407C R22

R410A

November 2008

Indication of model name

NOTE:

This service manual describes technical data of the indoor units.

• As for outdoor units refer to outdoor unit’s service manual.

• RoHS compliant products have <G> mark on the spec name plate.

• Please void OC404.

Revision:

• PFFY-P20/25/32/40

VKM-ER1 are added in

REVISED EDITION-A.

• Some descriptions have

been modified.

PFFY-P20VKM-E

PFFY-P25VKM-E

PFFY-P32VKM-E

PFFY-P40VKM-E

1TEHNICAL CHANGES

Cautions for units utilizing refrigerant R407C

CAUTIONS RELATED TO NEW REFRIGERANT

Do not use the existing refrigerant piping.

The old refrigerant and lubricant in the existing piping

contains a large amount of chlorine which may cause the

lubricant deterioration of the new unit.

Use “low residual oil piping”

If there is a large amount of residual oil (hydraulic oil, etc.)

inside the piping and joints, deterioration of the lubricant

will result.

Use ESTR , ETHER or HAB as the lubricant to

coat flares and flange connection parts.

If large amount of mineral oil enter, that can cause

deterioration of refrigerant oil etc.

Use liquid refrigerant to seal the system.

If gas refrigerant is used to seal the system, the composition

of the refrigerant in the cylinder will change and performance

may drop.

Do not use a refrigerant other than R407C.

If another refrigerant (R22, etc.) is used, the chlorine in the

refrigerant may cause the lubricant deterioration.

Use a vacuum pump with a reverse flow check valve.

The vacuum pump oil may flow back into the refrigerant

cycle and cause the lubricant deterioration.

Store the piping to be used indoors during

installation and both ends sealed until just

before brazing.

(Store elbows and other joints in a plastic bag.)

If dust, dirt, or water enters the refrigerant cycle,

deterioration of the oil and compressor trouble may result. Ventilate the room if refrigerant leaks during

operation. If refrigerant comes into contact with

a flame, poisonous gases will be released.

SAFETY PRECAUTION

PFFY-P20VKM-E PFFY-P20VKM-ER1

PFFY-P25VKM-E PFFY-P25VKM-ER1

PFFY-P32VKM-E PFFY-P32VKM-ER1

PFFY-P40VKM-E PFFY-P40VKM-ER1

INDOOR CONTROLLER BOARD (I.B.) has been changed.

[3] Service tools

Use the below service tools as exclusive tools for R407C refrigerant.

No. Tool name Specifications

1Gauge manifold ·Only for R407C.

·Use the existing fitting SPECIFICATIONS. (UNF7/16)

·Use high-tension side pressure of 3.43MPa·G or over.

2Charge hose ·Only for R407C.

·Use pressure performance of 5.10MPa·G or over.

3Electronic scale

4Gas leak detector ·Use the detector for R134a or R407C.

5Adapter for reverse flow check. ·Attach on vacuum pump.

6Refrigerant charge base.

7Refrigerant cylinder. ·For R407C ·Top of cylinder (Brown)

·Cylinder with syphon

8Refrigerant recovery equipment.

[2] Refrigerant recharging

(1) Refrigerant recharging process

1Direct charging from the cylinder.

·R407C cylinder are available on the market has a syphon pipe.

·Leave the syphon pipe cylinder standing and recharge it.

(By liquid refrigerant)

(2) Recharge in refrigerant leakage case

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release the refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of

liquid refrigerant.

[1] Cautions for service

·After recovering the all refrigerant in the unit, proceed to working.

·Do not release refrigerant in the air.

·After completing the repair service, recharge the cycle with the specified amount of

liquid refrigerant.

Gravimeter

Unit

Cautions for units utilizing refrigerant R410A

Use ester oil, ether oil or alkylbenzene oil (small

amount) as the refrigerant oil applied to flares

and flange connections.

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 refrige-

rant 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.

Handle tools with care.

If dirt, dust or moisture enter into refrigerant cycle, that can

cause deterioration of refrigerant oil or malfunction of com-

pressor.

Do not use a charging cylinder.

If a charging cylinder is used, the composition of refrigera-

nt 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

If dirt, dust or moisture enter into refrigerant cycle, that can

cause deterioration of refrigerant oil or malfunction of com-

pressor.

If large amount of mineral oil enter, that can cause deterio-

ration of refrigerant oil etc.

Do not use the existing refrigerant piping.

The old refrigerant and lubricant in the existing piping

contains a large amount of chlorine which may cause the

lubricant deterioration of the new unit.

Use “low residual oil piping”

If there is a large amount of residual oil (hydraulic oil, etc.)

inside the piping and joints, deterioration of the lubricant

will result.

Store the piping to be used indoors during

installation and both ends of the piping sealed

until just before brazing. (Leave elbow joints, etc.

in their packaging.)

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. (Refrigerant is charged from liquid phase.)

Gravimeter

Unit

[3] Service tools

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

No. Tool name Specifications

1Gauge manifold ·Only for R410A

·Use the existing fitting specifications. (UNF1/2)

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

2Charge hose ·Only for R410A

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

3Electronic scale

4Gas leak detector ·Use the detector for R134a, R407C or R410A.

5Adaptor for reverse flow check ·Attach on vacuum pump.

6Refrigerant charge base

7Refrigerant cylinder ·Only for R410A Top of cylinder (Pink)

Cylinder with syphon

8Refrigerant recovery equipment

PART NAMES AND FUNCTIONS

Indoor Unit

Louver

Air outlet

Filter

Vane

Air outlet Air inlet

Damper

Operation buttons

PAR-21MAA

ON/OFF

FILTER

CHECK

OPERATION

CLEAR

TEST

TEMP.

BACK DAY

MONITOR/SET

CLOCK

ON/OFF

Set Temperature buttons

Down

Timer Menu button

(Monitor/Set button)

Mode button (Return button)

Set Time buttons

Back

Ahead

Timer On/Off button

(Set Day button)

Opening the

door.

ON/OFF button

Fan Speed button

Filter button

(<Enter> button)

Test Run button

Check button (Clear button)

Airflow Up/Down button

Louver button

(Operation button)

To preceding operation

number.

Ventilation button

(Operation button)

To next operation number.

Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.

Wired remote controller

Display

For purposes of this explanation,

all parts of the display are shown

as lit. During actual operation, only

the relevant items will be lit.

°F°C

ERROR CODE

AFTER

TIMER

TIME SUN MON TUE WED THU FRI SAT

OFF

AFTER

FILTER

FUNCTION

ONLY1Hr.

WEEKLY

SIMPLE

AUTO OFF

Identifies the current operation

Shows the operating mode, etc.

* Multilanguage display is sup-

ported.

“Centrally Controlled” indicator

Indicates that operation of the re-

mote controller has been prohib-

ited by a master controller.

“Timer Is Off” indicator

Indicates that the timer is off.

Temperature Setting

Shows the target temperature.

Day-of-Week

Shows the current day of the week.

Time/Timer Display

Shows the current time, unless the simple or Auto Off

timer is set.

If the simple or Auto Off timer is set, shows the time

remaining.

“Sensor” indication

Displayed when the remote controller

sensor is used.

“Locked” indicator

Indicates that remote controller but-

tons have been locked.

“Clean The Filter” indicator

Comes on when it is time to clean the

filter.

Timer indicators

The indicator comes on if the corre-

sponding timer is set.

Up/Down Air Direction indica-

tor

The indicator shows the direc-

tion of the outcoming airflow.

“One Hour Only” indicator

Displayed if the airflow is set to

Low and downward during COOL

or DRY mode. (Operation varies

according to model.)

The indicator goes off after one

hour, at which time the airflow di-

rection also changes.

Room Temperature display

Shows the room temperature.

Louver display

Indicates the action of the swing

louver. Does not appear if the

louver is stationary.

(Power On indicator)

Indicates that the power is on.

Fan Speed indicator

Shows the selected fan speed.

Ventilation indicator

Appears when the unit is running in

Ventilation mode.

Caution

Only the Power on indicator lights when the unit is stopped and power supplied to the unit.

If you press a button for a feature that is not installed at the indoor unit, the remote controller will display the “Not Available”

message.

If you are using the remote controller to drive multiple indoor units, this message will appear only if he feature is not

present at every unit connected.

When power is turned ON for the first time, it is normal that “PLEASE WAIT” is displayed on the room temperature indication

(For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappear then start the operation.

For the PFFY-P VKM series, the airflow direction displayed on the remote controller is different from the actual airflow direc-

tion. Refer to the following table.

Display

Actual

1234

(Horiz.) Swing

123 4

(Horiz.) Swing

The airflow direction for the lower air outlet damper cannot be set. The airflow direction is automatically controlled by a com-

puter.

4SPECIFICATION

4-1. Specification

Item PFFY-P20VKM-E

PFFY-P20VKM-ER1

Power source 1-phase 220-240V 50Hz

Cooling capacity kW 2.2 2.8 3.6 4.5

Heating capacity kW 2.5 3.2 4.0 5.0

Power Cooling kW 0.025 0.025 0.025 0.028

consumption Heating kW 0.025 0.025 0.025 0.028

Current Cooling A 0.20 0.20 0.20 0.24

Heating A 0.20 0.20 0.20 0.24

Height mm 600 600 600 600

Dimension Width mm 700 700 700 700

Depth mm 200 200 200 200

Weight kg 15 15 15 15

Heat exchanger Cross fin (Aluminum plate fin and copper tube)

Type Line flow fan %2

Airflow rate *2 m

/min 5.9-6.8-7.6-8.7 6.1-7.0-8.0-9.1 6.1-7.0-8.0-9.1 8.0-9.0-9.5-10.7

Fan

External static Pa 0

pressure

Motor Type DC motor

Output kW 0.03 %2

Air filter PP honeycomb fabric (Catechin air filter)

Refrigerant Gas (Flare) :mm :12.7

pipe dimension Liquid (Flare) :mm :6.35

Field drain pipe size :mm I.D.16(PVC pipe VP-16 connectable)

Noise level *2 dB(A)27-31-34-37 28-32-35-38 28-32-35-38 35-38-42-44

PFFY-P25VKM-E

PFFY-P25VKM-ER1

PFFY-P32VKM-E

PFFY-P32VKM-ER1

PFFY-P40VKM-E

PFFY-P40VKM-ER1

Note 1. Rating conditions (JIS B 8616)

Cooling :Indoor : D.B. 27°C W.B. 19.0°C

outdoor :D.B. 35°C

Heating : Indoor : D.B. 20°C

outdoor :D.B. 7°C W.B. 6°C

*2. Air flow and the noise level are indicated as High-Medium1-Medium2-Low.

Parts name

Model

Symbol

TH21

TH22

TH23

FUSE

MF1

MF2

MV1

MV2

LEV

TB2

TB5

Resistance 0/15k, 10/9.6k, 20/6.3k, 25/5.4k, 30/4.3k, 40/3.0k

250V 6.3A

(L, N, ) 330V 30A

(M1, M2, S) 250V 20A

Vane motor

Damper motor

Linear expansion valve

[coil]

PFFY-P20VKM-E

PFFY-P20VKM-ER1

Fuse

(Indoor controller board)

Fan motor (Upper)

Fan motor (Lower)

Power supply terminal

block

Transmission terminal

block

OUTPUT 30W

ARW40Z8P30MS

MP20Z

DC12V

MP35EA

DC12V

DC12V Stepping motor drive Port dimension

5.2 (0~2000 pulse)

EFM-40YGME

OUTPUT 30W

ARW40Y8P30MS

Thermistor

(Room temperature

detection)

Thermistor

(Pipe temperature

detection/Liquid)

Thermistor

(Pipe temperature

detection/Gas)

PFFY-P25VKM-E

PFFY-P25VKM-ER1

PFFY-P32VKM-E

PFFY-P32VKM-ER1

PFFY-P40VKM-E

PFFY-P40VKM-ER1

4-2. Electrical parts specifications

5NOISE CRITERIA CURVES

10 63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Test conditions,

Cooling : Dry-bulb temperature 27Wet-bulb temperature 19

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

COOLING

FUNCTION

SPL(dB(A)) LINE

High

FAN SPEED

HEATING

Heating : Dry-bulb temperature 20Wet-bulb temperature 15

10 63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Test conditions,

Cooling : Dry-bulb temperature 27Wet-bulb temperature 19

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

COOLING

FUNCTION

SPL(dB(A)) LINE

High

FAN SPEED

HEATING

Heating : Dry-bulb temperature 20Wet-bulb temperature 1590

10 63 125 250 500 1000 2000 4000 8000

NC-60

NC-50

NC-40

NC-30

NC-20

NC-70

OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR

BAND CENTER FREQUENCIES, Hz

Test conditions,

Cooling : Dry-bulb temperature 27Wet-bulb temperature 19

APPROXIMATE

THRESHOLD OF

HEARING FOR

CONTINUOUS

NOISE

COOLING

FUNCTION

SPL(dB(A)) LINE

High

FAN SPEED

HEATING

Heating : Dry-bulb temperature 20Wet-bulb temperature 15

PFFY-P20VKM-E PFFY-P20VKM-ER1

INDOOR UNIT

WALL

1m 1m

MICROPHONE

PFFY-P25VKM-E PFFY-P25VKM-ER1

PFFY-P32VKM-E PFFY-P32VKM-ER1

PFFY-P40VKM-E PFFY-P40VKM-ER1

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