Mitsubishi PKA-M50HAL, PUZ-ZM71VHA, PKA-M50HA, PUHZ-ZRP71VHA2, PKA-M35HAL Service Manual

...

SERVICE MANUAL

Notes:

• This manual describes service data of the indoor units only.

• RoHS compliant prod-

ucts have <G> mark on the spec name plate.

CONTENTS

1. REFERENCE MANUAL

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

2. SAFETY PRECAUTION

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

3. PARTS NAMES AND FUNCTIONS

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

4. SPECIFICATIONS

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

5. NOISE CRITERION CURVES

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

6. OUTLINES AND DIMENSIONS

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

7. WIRING DIAGRAM

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

8. REFRIGERANT SYSTEM DIAGRAM

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

9. TROUBLESHOOTING

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

10. FUNCTION SETTING

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

11. SPECIAL FUNCTION

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

12. DISASSEMBLY PROCEDURE

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

Indoor unit [Model Name] [Service Ref.]

PARTS CATALOG (OCB660)

INDOOR UNIT

PKA-M35HA

PKA-M50HA

PKA-M35HAL

PKA-M50HAL

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS SPLIT-TYPE, AIR CONDITIONERS

No. OCH660

March 2017

R32/R410A

REFERENCE MANUAL

OUTDOOR UNIT’S SERVICE MANUAL

Model name Service Ref. Service manual No.

PUZ-ZM35/50VKA PUZ-ZM71VHA

OCH653 OCB653

PUZ-ZM100/140VKA PUZ-ZM100/140YKA

PUZ-ZM100/140VKA.UK PUZ-ZM100/140YKA.UK

OCH654 OCB654

PUHZ-ZRP35/50VKA2 PUHZ-ZRP71VHA2

PUHZ-ZRP35/50VKA2(-ER/ET) PUHZ-ZRP71VHA2(-ER/ET)

OCH635 OCB635

PUHZ-ZRP100/140VKA3 PUHZ-ZRP100/140YKA3 PUHZ-ZRP200/250YKA2

PUHZ-ZRP100/140VKA3.UK PUHZ-ZRP100/140YKA3.UK PUHZ-ZRP200/250YKA2.UK

OCH645 OCB645

PUHZ-P100VHA5 PUHZ-P125/140VHA4 PUHZ-P100YHA3 PUHZ-P125/140YHA2

PUHZ-P100VHA5.UK PUHZ-P125/140VHA4.UK PUHZ-P100YHA3.UK PUHZ-P/125140YHA2.UK

OCH646 OCB646

PUHZ-P200/250YKA2 PUHZ-P200/250YKA2.UK

OCH647 OCB647

PUHZ-SHW112VHA PUHZ-SHW112YHA PUHZ-SHW140YHA

PUHZ-SHW112VHAR4.UK PUHZ-SHW112YHAR4.UK PUHZ-SHW140YHAR4.UK

OCH526 OCB526

PUHZ-SHW230YKA2 PUHZ-SHW230YKA2

OCH594 OCB594

PUHZ-FRP71VHA PUHZ-FRP71VHA

OCH544 OCB544

OCH660

SAFETY PRECAUTION

Cautions for units utilising refrigerant R32/R410A

2-2. 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.

In case of using the existing pipes for R22, be careful with the following:

· Be sure to clean the pipes and make sure that the insides of the pipes are clean.

· 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 R32/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 R32/R410A refrigerant.

The following tools are necessary to use R32/R410A refrigerant.

Handle tools with care.

If dirt, dust or moisture enters 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 R32/R410A

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

· In case of reconnecting the refrigerant pipes after

detaching, make the flared part of pipe re-fabricated.

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

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

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

The refrigerant oil applied to flare and flange connections must be ester oil, ether oil or alkylbenzene oil in a small amount.

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

Never use any refrigerant other than that specified.

Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of. Correct refrigerant is specified in the manuals and on the spec labels provided with our products. We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions.

Use the specified refrigerant only.

2-1. ALWAYS OBSERVE FOR SAFETY

Before obtaining access to terminal, all supply circuits must be disconnected.

MEANINGS OF SYMBOLS DISPLAYED ON THE UNIT

WARNING

This mark is for R32 refrigerant only. Refrigerant type is written on nameplate of outdoor unit.

Read the OPERATION MANUAL carefully before operation.

Service personnel are required to carefully read the OPERATION MANUAL and INSTALLATION MANUAL before operation.

Further information is available in the OPERATION MANUAL, INSTALLATION MANUAL, and the like.

OCH660

[1] Warning for service

(1) Do not alter the unit. (2) For installation and relocation work, follow the instructions in the Installation Manual and use tools and pipe

components specifically made for use with refrigerant specified in the outdoor unit installation manual.

(3) Ask a dealer or an authorized technician to install, relocate and repair the unit. (4) This unit should be installed in rooms which exceed the floor space specified in outdoor

unit installation manual.

Refer to outdoor unit installation manual.

(5) For appliances not accessible to the general public. (6) Refrigerant pipes connection shall be accessible for maintenance purposes. (7) If the air conditioner is installed in a small room or closed room, measures must be taken to prevent the refrig-

erant concentration in the room from exceeding the safety limit in the event of refrigerant leakage. Should the refrigerant leak and cause the concentration limit to be exceeded, hazards due to lack of oxygen in the room may result.

(8) Keep gas-burning appliances, electric heaters, and other fire sources (ignition sources) away from the location

where installation, repair, and other air conditioner work will be performed. If refrigerant comes into contact with a flame, poisonous gases will be released.

(9) When installing or relocating, or servicing the air conditioner, use only the specified refrigerant written on out-

door unit to charge the refrigerant lines. Do not mix it with any other refrigerant and do not allow air to remain in the lines. If air is mixed with the refrigerant, then it can be the cause of abnormal high pressure in the refrigerant line, and may result in an explosion and other hazards.

(10) After installation has been completed, check for refrigerant leaks. If refrigerant leaks into the room and comes

into contact with the flame of a heater or portable cooking range, poisonous gases will be released.

(11) Do not use low temperature solder alloy in case of brazing the refrigerant pipes. (12) When performing brazing work, be sure to ventilate the room sufficiently. Make sure that there are no hazardous

or flammable materials nearby. When performing the work in a closed room, small room, or similar location, make sure that there are no refrigerant leaks before performing the work. If refrigerant leaks and accumulates, it may ignite or poisonous gases may be released.

(13) Do not install the unit in places where refrigerant may build-up or places with poor ventilation such as a semi-

basement or a sunken place in outdoor: Refrigerant is heavier than air, and inclined to fall away from the leak source.

(14) Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manu-

facturer.

(15) The appliance shall be stored in a room without continuously operating ignition sources (for example: open

flames, an operating gas appliance or an operating electric heater).

(16) Do not pierce or burn. (17) Be aware that refrigerants may not contain an odour. (18) Pipe-work shall be protected from physical damage. (19) The installation of pipe-work shall be kept to a minimum. (20) Compliance with national gas regulations shall be observed. (21) Keep any required ventilation openings clear of obstruction. (22) Servicing shall be performed only as recommended by the manufacturer. (23) The appliance shall be stored in a well-ventilated area where the room size corresponds to the room area as

specified for operation.

(24) Maintenance, service and repair operations shall be performed by authorized technician with required qualifica-

tion.

[2] Cautions for service

(1) Perform service after recovering 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.

[3] Additional refrigerant charge

When charging directly from cylinder

(1) Check that cylinder for R32/R410A available on the market is a syphon type. (2) Charging should be performed with the cylinder of syphon stood vertically. (Refrigerant is charged from liquid phase.)

OCH660

[4] Cautions for unit using R32 refrigerant

Basic work procedures are the same as those for conventional units using refrigerant R410A. However, pay careful attention to the following points.

(1) Information on servicing (1-1) Checks on the Area

Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of ignition is minimized. For repair to the refrigerating systems, (1-3) to (1-7) shall be completed prior to conducting work on the systems.

(1-2) Work Procedure

Work shall be undertaken under a controlled procedure so as to minimize the risk of a flammable gas or vapor being present while the work is being performed.

(1-3) General Work Area

All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out.

Work in confined spaces shall be avoided. The area around the workspace shall be sectioned off. Ensure that the con-

ditions within the area have been made safe by control of flammable material.

(1-4) Checking for Presence of Refrigerant

The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware of potentially toxic or flammable atmospheres. Ensure that the leak detection equipment being used is suitable for use with all applicable refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe.

(1-5) Presence of Fire Extinguisher

If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire extinguishing equipment shall be available to hand. Have a dry powder or CO2 fire extinguisher adjacent to the charging area.

(1-6) No Ignition Sources

No person carrying out work in relation to a refrigeration system which involves exposing any pipe work shall use any

sources of ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition sources, includ-

ing cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal, during which refrigerant can possibly be released to the surrounding space. Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable hazards or ignition risks. “No Smoking” signs shall be displayed.

(1-7) Ventilated Area

Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out. The ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.

(1-8) Checks on the Refrigeration Equipment

Where electrical components are being changed, they shall be fit for the purpose and to the correct specification. At all times the manufacturer’s maintenance and service guidelines shall be followed. If in doubt, consult the manufacturer’s technical department for assistance. The following checks shall be applied to installations using flammable refrigerants:

•

The charge size is in accordance with the room size within which the refrigerant containing parts are installed.

•

The ventilation machinery and outlets are operating adequately and are not obstructed.

•

Marking to the equipment continues to be visible and legible. Markings and signs that are illegible shall be corrected.

•

Refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any substance which may corrode refrigerant containing components, unless the components are constructed of materials which are inherently resistant to being corroded or are suitably protected against being corroded.

(1-9) Checks on Electrical Devices

Repair and maintenance to electrical components shall include initial safety checks and component inspection proce-

dures. If a fault exists that could compromise safety, then no electrical supply shall be connected to the circuit until it is

satisfactorily dealt with. If the fault cannot be corrected immediately but it is necessary to continue operation, an ade-

quate temporary solution shall be used. This shall be reported to the owner of the equipment so all parties are advised. Initial safety checks shall include that:

•

capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking;

•

no live electrical components and wiring are exposed while charging, recovering or purging the system;

•

there is continuity of earth bonding

(2) Repairs to Sealed Components (2-1) During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked

upon prior to any removal of sealed covers, etc. If it is absolutely necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak detection shall be located at the most critical point to warn of a potentially hazardous situation.

(2-2) Particular attention shall be paid to the following to ensure that by working on electrical components, the casing is not

altered in such a way that the level of protection is affected. This shall include damage to cables, excessive number of connections, terminals not made to original specification, damage to seals, incorrect fitting of glands, etc. Ensure that the apparatus is mounted securely.

Ensure that seals or sealing materials have not degraded to the point that they no longer serve the purpose of prevent-

ing the ingress of flammable atmospheres. Replacement parts shall be in accordance with the manufacturer’s specifications.

OCH660

Continued to the next page

(3) Repair to intrinsically Safe Components

Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not exceed the permissible voltage and current permitted for the equipment in use.

Intrinsically safe components are the only types that can be worked on while live in the presence of a flammable atmos-

phere. The test apparatus shall be at the correct rating. Replace components only with parts specified by the manufacturer. Other parts may result in the ignition of refrigerant in the atmosphere from a leak.

(4) Cabling

Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.

(5) Detection of Flammable Refrigerants

Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks. A halide torch (or any other detector using a naked flame) shall not be used.

(6) Leak Detection Methods

Electronic leak detectors may be used to detect refrigerant leaks but, in the case of flammable refrigerants, the sensitivity may not be adequate, or may need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free area.)

Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant used. Leak detection equip-

ment shall be set at a percentage of the LFL of the refrigerant and shall be calibrated to the refrigerant employed, and the appropriate percentage of gas (25% maximum) is confirmed. Leak detection fluids are suitable for use with most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work. If a leak is suspected, all naked flames shall be removed/extinguished. If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut off valves) in a part of the system remote from the leak. For appliances containing flammable

refrigerants, oxygen free nitrogen (OFN) shall then be purged through the system both before and during the brazing pro-

cess.

(7) Removal and Evacuation

When breaking into the refrigerant circuit to make repairs – or for any other purpose conventional procedures shall be

used. However, for flammable refrigerants it is important that best practice is followed since flammability is a considera-

tion. The following procedure shall be adhered to:

• remove refrigerant

• purge the circuit with inert gas

• evacuate

• purge again with inert gas

• open the circuit by cutting or brazing.

The refrigerant charge shall be recovered into the correct recovery cylinders. For appliances containing flammable refrig-

erants, the system shall be “flushed” with OFN to render the unit safe. This process may need to be repeated several times. Compressed air or oxygen shall not be used for purging refrigerant systems. For appliances containing flammable refrigerants, flushing shall be achieved by breaking the vacuum in the system with OFN and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum. This process shall be repeated until no refrigerant is within the system. When the final OFN charge is used, the system shall be vented down to atmospheric pressure to enable work to take place. This operation is absolutely vital if brazing operations on the pipe-work are to take place. Ensure that the outlet for the vacuum pump is not close to any ignition sources and that ventilation is available.

(8) Charging Procedures

In addition to conventional charging procedures, the following requirements shall be followed:

•

Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in them.

•

Cylinders shall be kept upright.

•

Ensure that the refrigeration system is earthed prior to charging the system with refrigerant.

•

Label the system when charging is complete (if not already).

•

Extreme care shall be taken not to overfill the refrigeration system. Prior to recharging the system, it shall be pressure-tested with the appropriate purging gas. The system shall be leaktested on completion of charging but prior to commissioning. A follow up leak test shall be carried out prior to leaving the site.

(9) Decommissioning

Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that all refrigerants are recovered safely. Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of reclaimed refrigerant. It is essential that electrical power is available before the task is commenced.

a) Become familiar with the equipment and its operation.

OCH660

b) Isolate system electrically. c) Before attempting the procedure, ensure that:

• mechanical handling equipment is available, if required, for handling refrigerant cylinders;

• all personal protective equipment is available and being used correctly;

• the recovery process is supervised at all times by a competent person;

• recovery equipment and cylinders conform to the appropriate standards. d) Pump down refrigerant system, if possible. e) If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system. f) Make sure that cylinder is situated on the scales before recovery takes place. g) Start the recovery machine and operate in accordance with manufacturer’s instructions. h) Do not overfill cylinders. (No more than 80 % volume liquid charge).

i) Do not exceed the maximum working pressure of the cylinder, even temporarily.

j) When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equip-

ment are removed from site promptly and all isolation valves on the equipment are closed off.

k) Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and checked.

(10) Labelling

Equipment shall be labelled stating that it has been de-commissioned and emptied of refrigerant. The label shall be

dated and signed. For appliances containing flammable refrigerants, ensure that there are labels on the equipment stat-

ing the equipment contains flammable refrigerant.

(11) Recovery

When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice

that all refrigerants are removed safely. When transferring refrigerant into cylinders, ensure that only appropriate refrig-

erant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total system charge are available. All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e. special cylinders for the recovery of refrigerant). Cylinders shall be complete with pressure-relief valve and associated shut-off valves in good working order. Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs. The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at

hand and shall be suitable for the recovery of all appropriate refrigerants including, when applicable, flammable refrigerants. In addition, a set of calibrated weighing scales shall be available and in good working order. Hoses shall be com-

plete with leak-free disconnect couplings and in good condition. Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release. Consult manufacturer if in doubt. The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant waste transfer note arranged. Do not mix refrigerants in recovery units and especially not in cylinders. If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that flammable refrigerant does not remain within the lubricant. The evacuation process shall be carried out prior to returning

the compressor to the suppliers. Only electric heating to the compressor body shall be employed to accelerate this pro-

cess. When oil is drained from a system, it shall be carried out safely.

OCH660

PARTS NAMES AND FUNCTIONS

3-1. Indoor unit

Filter

Air intake

Louver

Air outlet

Vane

[5] Service tools

Use the below service tools as exclusive tools for R32/R410A refrigerant.

No. Tool name Specications

Gauge manifold · Use the existing fitting

specifications

. (UNF1/2)

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

2. Charge hose

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

Electronic weighing scale

―

Gas leak detector · Use the detector for R32 or R410A.

Adaptor for reverse flow check · Attach on vacuum pump.

Refrigerant charge base

―

Refrigerant cylinder · Top of cylinder (R32 or R410A refrigerant)

· Cylinder with syphon

Refrigerant recovery equipment

―

Electronic weighing scale

Unit

OCH660

ON/OFF TEMP

FAN

VANE

TEST RUN

AUTO STOP

AUTO START

min

LOUVER

MODE

CHECK

RESETSET CLOCK

MODEL SELECT

NOT AV AILABLE

CHECK

TEST RUN

°C

AMPM

VANE CONTROL button

Used to change the air flow direction.

CLOCK button

RESET button

SET button

ON/OFF button

The unit is turned ON and OFF alternately

each time

the button is pressed.

MODE SELECT button

Used to switch the operation mode between cooling, drying, heating, auto and fan mode.

CHECK-TEST RUN buttons

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

FAN SPEED SELECT button

Used to change the fan speed.

TIMER display

Displays when in timer operation or when setting timer.

buttons

SET TEMPERATURE button sets any desired room temperature.

CLOCK display

Displays the current time.

“ ” “ ” display

Displays the order of timer operation.

“ ” “ ” display

Displays whether timer is on or off.

Buttons used to set the “hour and minute” of the current time and timer settings.

“h” and “min” buttons

display

FAN SPEED display indicates which fan speed has been selected.

display

The vertical direction of air flow is indicated.

display

Blinks when model is selected.

display

CHECK and TEST RUN display indicate that the unit is being checked or test-run.

display

OPERATION MODE display Operation mode display indicates which operation mode is in effect.

AUTO STOP (OFF timer): when this switch is set, the air conditioner will be

automatically stopped at the preset time. AUTO START (ON timer): when this switch is set, the air conditioner will be automatically started at the preset time.

MODEL SELECT

CHECK

TEST RUN

LOUVER button

Changes left/right airflow direction.

(Not available for this model.)

SET TEMP. display indicates the desired temperature which is set.

Lights up while the signal is transmitted to the indoor unit when the button is pressed.

TIMER CONTROL buttons

3-2. Wireless remote controller (Option for HA model)

OCH660

The functions which can be used are restricted according to each model.

The main display can be displayed in 2 different modes: "Full" and "Basic." The initial setting is "Full."

Fri

Mode Temp. Fan

Room

Cool Auto

Set temp.

Fri

Cool

Mode Temp. Fan

AutoSet temp.

191716

6 8

7 9

Fan speed setting appears here.

4 Fan speed

Appears while the units are operated in the energy-save mode.

Appears while the outdoor units are operated in the silent mode.

Preset temperature appears here.

Appears when the ON/OFF operation is centrally controlled.

Current time appears here.

Appears when the buttons are locked.

Indoor unit operation mode appears here.

Appears when the operation mode is centrally controlled.

2 Preset temperature

1 Operation mode

Appears when the units are operated in the energy-save mode with 3D i-see Sensor.

Indicates the louver setting.

Indicates the ventilation setting.

Appears when the On/Off timer or Night setback function is enabled.

Indicates when filter needs maintenance.

Appears when the filter reset function is centrally controlled.

Appears when the preset temperature is centrally controlled.

Appears when the Weekly timer is enabled.

Appears when the preset temperature range is restricted.

Functions of the corresponding buttons appear here.

5 Button function guide

Appears when the built-in thermistor on the remote controller is activated to monitor the room temperature (a).

appears when the thermistor on the indoor unit is activated to monitor the room temperature.

3 Clock

(See the Installation Manual.)

Current room temperature appears here.

11 Room temperature

(See the Installation Manual.)

Note: All icons are displayed for explanation.

1234

Press to turn ON/OFF the indoor unit.

1 ON/OFF button

This lamp lights up in green while the unit is in operation. It blinks while the remote controller is starting up or when there is an error.

Press to save the setting.

Main display: Press to change the operation mode. Main menu: Press to move the cursor down.

Press to return to the previous screen.

Main

display

: Press to decrease temperature.

Main menu: Press to move the cursor up.

Press to bring up the Main menu.

Main

display

: Press to increase temperature.

Main menu: Press to go to the previous page.

Operation settings will appear. When the backlight is off, pressing any button turns the backlight on and it will stay lit for a certain period of time depending on the screen.

Main

display

: Press to change the fan speed.

Main menu: Press to go to the next page.

6 ON/OFF lamp

2 SELECT button

7 Function button F1

3 RETURN button

8 Function button F2

4 MENU button

9 Function button F3

5 Backlit LCD

10 Function button F4

Fri

Room

Set temp.

Mode Temp. Fan

Cool Auto

Main

Main display:

Cursor Page

Main menu

Vane·Louver·Vent. (Lossnay) High power Timer Weekly timer OU silent mode

The functions of the function buttons change depending on the screen. Refer to the button function guide that appears at the bottom of the LCD for the functions they serve on a given screen. When the system is centrally controlled, the button function guide that corresponds to the locked button will not appear.

Main display Main menu

Function guide

7 8 9 0 7 8 9 0

• When the backlight is off, pressing any button turns the backlight on and does not perform its function. (except for the ON/OFF button)

• Most settings (except ON/OFF, mode, fan speed, temperature) can be made from the Menu screen.

Display

Full mode

Basic mode

Controller interface

Function buttons

10987

Indicates the vane setting.

3-3. WIRED REMOTE CONTROLLER (OPTION) <PAR-32MAA>

OCH660

Not all functions are available on all models of indoor units.

Energy saving

Auto return

Schedule

Night setback

Main menu

Press the

button.

Move the cursor to the desired item with the

and

buttons, and press the

SELECT

button.

Vane · Louver · Vent. (Lossnay)

High power

Weekly timer

Restriction

Maintenance

Initial setting

ON/OFF timer

Auto-OFF timer

Temp. range

Operation lock

Manual vane angle

Main/Sub

Timer

Main display

Contrast

Display details

Auto mode

Administrator password

Language selection

Service

Input maintenance info.

Function setting

Check

Self check

Maintenance password

Remote controller check

Test run

Clock

Auto descending panel

Menu structure

Filter information Error information

3D i-see Sensor

OCH660

SPECIFICATIONS

Cooling

0.04

0.40

Heating

0.03

0.30

Single phase, 50Hz, 230V

Munsell 1.0Y 9.2/0.2

Plate fin coil

Line flow fan (direct) o 1

0.030

9-10.5-12 (320-370-425)

0 (direct blow)

–

Wireless remote controller & built-in

36-40-43

16 (5/8)

898 (35-3/8)

249 (9-13/16)

295 (11-5/8)

13 (29)

K/min (CFM)

Pa (mmAq)

dB mm (inch) mm (inch) mm (inch) mm (inch)

kg (lb)

Mode Power supply (phase, cycle, voltage) Input Running current External finish (Panel) Heat exchanger Fan Fan (drive) o No. Fan motor output Airflow (Low-Middle-High) External static pressure Booster heater Operation control & Thermostat Noise level (Low-Middle-High) Field drain pipe I.D. Dimensions

Weight

D H

INDOOR UNIT

PKA-M50HA

PKA-M50HAL

Service Ref.

Cooling

0.04

0.40

Heating

0.03

0.30

Single phase, 50Hz, 230V

Munsell 1.0Y 9.2/0.2

Plate fin coil

Line flow fan (direct) o 1

0.030

9-10.5-12 (320-370-425)

0 (direct blow)

–

Wireless remote controller & built-in

36-40-43

16 (5/8)

898 (35-3/8)

249 (9-13/16)

295 (11-5/8)

13 (29)

K/min (CFM)

Pa (mmAq)

dB mm (inch) mm (inch) mm (inch) mm (inch)

kg (lb)

Weight

D H

INDOOR UNIT

PKA-M35HA

PKA-M35HAL

Service Ref.

OCH660

NOISE CRITERION CURVES

* Measured in anechoic room.

PKA-M35/50HA(L)

36 - 40 - 43

Sound level dB (A)

Sound level at anechoic room : Low-Middle-High

1.0m

Measurement location

Model

5-1. SOUND LEVELS

5-2. NOISE CRITERION CURVES

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

50.0

55.0

60.0

65.0

70.0

63 125 250 500 1k 2k 4k 8k

NC-60

NC-50

Octave band pressure level (dB) 0dB=20μPa

Approximate minimum audible limit on continuous noise

NC-40

Octave band center frequencies (Hz)

NC-20

NC-30

High

OCH660

+ 29 hidden pages

Mitsubishi PKA-M50HAL, PUZ-ZM71VHA, PKA-M50HA, PUHZ-ZRP71VHA2, PKA-M35HAL Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual