Mitsubishi SCM100ZJ-S1 Service Manual Download Page 195

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194

'11 • SCM-SM-110

PJA012D781

INSTALLATION MANUAL FOR CEILING CASSETTE

– 4 WAY COMPACT (600 x 600mm) –

This manual is for the installation of an indoor unit.
For electrical wiring work (Indoor), refer to the electrical wiring work installation manual. For remote
controller installation, refer to the installation manual attached to a remote controller. For wireless
kit installation, refer to the installation manual attached to a wireless kit. For electrical wiring work
(Outdoor) and refrigerant pipe work installation for outdoor unit, refer to the installation manual
attached to an outdoor unit.
This unit must always be used with the panel.

SAFETY PRECAUTIONS

Read the “SAFETY PRECAUTIONS” carefully first of all and then strictly follow it during the installation

work in order to protect yourself.

The precautionary items mentioned below are distinguished into two levels,

and

: Wrong installation would cause serious consequences such as injuries or death.

: Wrong installation might cause serious consequences depending on circumstances.

Both mentions the important items to protect your health and safety so strictly follow them by any means.

After completing the installation, do commissioning to confirm there are no abnormalities, and explain to the

customers about “SAFETY PRECAUTIONS”, correct operation method and maintenance method (air filter
cleaning, operation method and temperature setting method) with user’s manual of this unit.
Ask your customers to keep this installation manual together with the user’s manual. Also, ask them to hand
over the user’s manual to the new user when the owner is changed.

Installation should be performed by the specialist.

If you install the unit by yourself, it may lead to serious trouble such as water leakage, electric shock, fire, and

injury due to overturn of the unit.

Install the system correctly according to these installation manuals.

Improper installation may cause explosion, injury, water leakage, electric shock, and fire.

Consider measurement not to exceed the limit of the density of refrigerant in the event of

leakage especially when it is installed in a small room.

Consult the specialist about the measure. If the density of refrigerant exceeds the limit in the event of the leakage,

serious accidents may occur due to lack of oxygen.

Use the genuine accessories and the specified parts for installation.

If parts unspecified by our company are used it could cause water leakage, electric shock, fire, and injury due to

overturn of the unit.

Ventilate the working area well in case the refrigerant leaks during installation.

If the refrigerant contacts the fire, toxic gas is produced.

Install the unit in a location that can hold heavy weight.

Improper installation may cause the unit to fall leading to accidents.

Install the unit properly in order to be able to withstand strong winds such as typhoons, and

earthquakes.

Improper installation may cause the unit to fall leading to accidents.

Do not mix air in to the cooling cycle on installation or removal of the air conditioner.

If air is mixed in, the pressure in the cooling cycle will rise abnormally and may cause explosion and injuries.

Be sure to have the electrical wiring work done by qualified electrical installer, and use

exclusive circuit.

Power source with insufficient capacity and improper work can cause electric shock and fire.

Use specified wire for electrical wiring, fasten the wiring to the terminal securely, and hold the

cable securely in order not to apply unexpected stress on the terminal.

Loose connections or hold could result in abnormal heat generation or fire.

Arrange the electrical wires in the control box properly to prevent them from rising. Fit the lid

of the services panel property.

Improper fitting may cause abnormal heat and fire.

Check for refrigerant gas leakage after installation is completed.

If the refrigerant gas leaks into the house and comes in contact with a fan heater, a stove, or an oven, toxic gas

is produced.

Use the specified pipe, flare nut, and tools for R410A.

Using existing parts (R22) could cause the unit failure and serious accident due to explosion of the cooling cycle.

Tighten the flare nut according to the specified method by with torque wrench.

If the flare nut were tightened with excess torque, it could cause burst and refrigerant leakage after a long period.

Make sure there is no dust or clogging on both the plug and the socket nor loose connection

of the socket before plugging, and plug in securely to the end of the blade.

Accumulation of dust, clogging on the socket or plug, or loose installation of the socket could cause electric shock

and fire. Replace the socket if it is loose.

Connect the pipes for refrigeration circuit securely in installation work before compressor is

operated.

If the compressor is operated when the service valve is open without connecting the pipe, it could cause

explosion and injuries due to abnormal high pressure in the system.

Stop the compressor before removing the pipe on pump down work.

If the pipe is removed when the compressor is in operation with the service valve open, air would be mixed in the

refrigeration circuit and it could cause explosion and injuries due to abnormal high pressure in the cooling cycle.

Use the genuine optional parts. And installation should be performed by a specialist.

If you install the unit by yourself, it could cause water leakage, electric shock and fire.

Do not repair by yourself. And consult with the dealer about repair.

Improper repair may cause water leakage, electric shock or fire.

Consult the dealer or a specialist about removal of the air conditioner.

Improper installation may cause water leakage, electric shock or fire.

Turn off the power source during servicing or inspection work.

If the power is supplied during servicing or inspection work, it could cause electric shock and injury by the

operating fan.

Do not run the unit when the panel or protection guard are taken off.

Touching the rotating equipment, hot surface, or high voltage section could cause an injury to be caught in the

machine, to get burned, or electric shock.

Shut off the power before electrical wiring work.

It could cause electric shock, unit failure and improper running.

WARNING

Perform earth wiring surely.

Do not connect the earth wiring to the gas pipe, water pipe, lightning rod and telephone earth wiring. Improper

earth could cause unit failure and electric shock due to a short circuit.

Use the circuit breaker of correct capacity.

Using the incorrect capacity one could cause the system failure and fire.

Do not use any materials other than a fuse of correct capacity where a fuse should be used.

Connecting the circuit by wire or copper wire could cause unit failure and fire.

Do not install the indoor unit near the location where there is possibility of flammable gas

leakages.

If the gas leaks and gathers around the unit, it could cause fire.

Do not install and use the unit where corrosive gas (such as sulfurous acid gas etc.) or

flammable gas (such as thinner, petroleum etc.) may be generated or accumulated, or volatile

flammable substances are handled.

It could cause the corrosion of heat exchanger, breakage of plastic parts etc. And inflammable gas could cause fire.

Do not use the indoor unit at the place where water splashes such as laundry.

Indoor unit is not waterproof. It could cause electric shock and fire.

Do not use the indoor unit for a special purpose such as food storage, cooling for precision

instrument, preservation of animals, plants, and a work of art.

It could cause the damage of the items.

Do not install nor use the system near equipments which generate electromagnetic wave or

high harmonics.

Equipments like inverter equipment, private power generator, high-frequency medical equipment, or

telecommunication equipment might influence the air conditioner and cause a malfunction and breakdown. Or the

air conditioner might influence medical equipments or telecommunication equipments, and obstruct their medical

activity or cause jamming.

Do not install the remote controller at the direct sunlight.

It could cause breakdown or deformation of the remote controller.

Do not install the indoor unit at the place listed below.

Places where flammable gas could leak.

Places where carbon fiber, metal powder or any powder is floated.

Place where the substances which affect the air conditioner are generated such as sulfide gas, chloride gas,

acid or alkali.

Places exposed to oil mist or steam directly.

On vehicles and ships

Places where machinery which generates high harmonics is used.

Places where cosmetics or special sprays are frequently used.

Highly salted area such as beach.

Heavy snow area

Places where the system is affected by smoke from a chimney.

Altitude over 1000m

Do not put any valuables which will break down by getting wet under the air conditioner.

Condensation could drop when the relative humidity is higher than 80% or drain pipe is clogged, and it damages

user’s belongings.

Do not use the base frame for the outdoor unit which is corroded or damaged after a long

period of use.

It could cause the unit falling down and injury.

Pay attention not to damage the drain pan by weld sputter when brazing work is done near the

unit.

If sputter entered into the unit during brazing work, it could cause damage (pinhole) of drain pan and leakage of

water. To avoid damaging, keep the indoor unit packed or cover the indoor unit.

Install the drain pipe to drain the water surely according to the installation manual.

Improper connection of the drain pipe may cause dropping water into room and damaging user’s belongings.

Do not put the drain pipe directly into the ditch where toxic gas such as sulfide gas is

generated.

Toxic gas would flow into the room and it would cause serious damage to user’s health and safety.

Do not share the drain pipe for indoor unit and GHP (Gas Heat Pump system) outdoor unit.

Toxic exhaust gas would flow into room and it might cause serious damage (some poisoning or deficiency of

oxygen) to user’s health and safety.

For drain pipe installation, be sure to make descending slope of greater than 1/100, not to

make traps, and not to make air-bleeding

Check if the drainage is correctly done during commissioning and ensure the space for inspection and

maintenance.

Ensure the insulation on the pipes for refrigeration circuit so as not to condense water.

Incomplete insulation could cause condensation and it would wet ceiling, floor, and any other valuables.

Do not install the outdoor unit where is likely to be a nest for insects and small animals.

Insects and small animals could come into the electronic components and cause breakdown and fire. Instruct the

user to keep the surroundings clean.

Pay extra attention, carrying the unit by hand.

Carry the unit with 2 people if it is heavier than 20kg. Do not use the plastic straps but the grabbing place, moving

the unit by hand. Use protective gloves in order to avoid injury by the aluminum fin.

Make sure to dispose of the packaging material.

Leaving the materials may cause injury as metals like nail and woods are used in the package.

Do not operate the system without the air filter.

It may cause the breakdown of the system due to clogging of the heat exchanger.

Do not touch any button with wet hands.

It could cause electric shock.

Do not touch the refrigerant piping with bare hands when in operation.

The pipe during operation would become very hot or cold according to the operating condition, and it could cause

a burn or frostbite.

Do not clean up the air conditioner with water.

It could cause electric shock.

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

Be sure to wait for more than 5 minutes. Otherwise it could cause water leakage or breakdown.

Do not control the operation with the circuit breaker.

It could cause fire or water leakage. In addition, the fan may start operation unexpectedly and it may cause injury.

CAUTION

①

Before installation

Install correctly according to the installation manual.

Confirm the following points:

Unit type/Power supply specification

Pipes/Wires/Small parts

Accessory items

Accessory itme

For unit hanging

For refrigerant pipe

For draom pipe

Flat washer

(M10)

Level gauge

(Insulation)

Pipe cover(big)

Pipe cover

(small)

Strap

Pipe cover(big) Pipe cover(small)

Drain hose

Hose clamp

For unit hanging

For adjustment
in hoisting in the
unit's main body

For heat
insulation
of gas pipe

For heat
insulation
of liquid tube

For pipe cover
fixing

For heat
insulation
of drain socket

For drain pipe
connecting

For drain hose
mounting

②

Selection of installation location for the indoor unit

Select the suitable areas to install the unit under approval of the user.

Areas where the indoor unit can deliver hot and cold wind sufficiently. Suggest to the user to use
a circulator if the ceiling height is over 3m to avoid warm air being accumulated on the ceiling.

Areas where there is enough space to install and service.

Areas where it can be drained properly. Areas where drain pipe descending slope can be taken.

Areas where there is no obstruction of airflow on both air return grille and air supply port.

Areas where fire alarm will not be accidentally activated by the air conditioner.

Areas where the supply air does not short-circuit.

Areas where it is not influenced by draft air.

Areas not exposed to direct sunlight.

Areas where dew point is lower than around 28°C and relative humidity is lower than 80%.
This indoor unit is tested under the condition of JIS (Japan Industrial Standard) high humidity
condition and confirmed there is no problem. However, there is some risk of condensation drop
if the air conditioner is operated under the severer condition than mentioned above.
If there is a possibility to use it under such a condition, attach additional insulation of 10 to
20mm thick for entire surface of indoor unit, refrigeration pipe and drain pipe.

Areas where TV and radio stays away more than 1m. (It could cause jamming and noise.)

Areas where any items which will be damaged by getting wet are not placed such as food, table
wares, server, or medical equipment under the unit.

Areas where there is no influence by the heat which cookware generates.

Areas where not exposed to oil mist, powder and/or steam directly such as above fryer.

Areas where lighting device such as fluorescent light or incandescent light doesn’t affect the
operation.
(A beam from lighting device sometimes affects the infrared receiver for the wireless remote
controller and the air conditioner might not work properly.)

Check if the place where the air conditioner is installed can hold the weight of the unit. If it is not
able to hold, reinforce the structure with boards and beams strong enough to hold it. If the strength
is not enough, it could cause injury due to unit falling.

If there are 2 units of wireless type, keep them away for more than 5m to avoid malfunction due to
cross communication.

When plural indoor units are installed nearby, keep them away for more than 4m.

Space for installation and service

When it is not possible to keep enough space between indoor unit and wall or between indoor units,
close the air supply port where it is not possible to keep space and confirm there is no short circuit
of airflow.

Install the indoor unit at a height of more than 2.5m above the floor.

Wall

Ceiling
surface

Decorative panel

1000mm or more

4000mm or more

1000mm or more

2500mm or more

Obstacle

Floor

③

Preparation before installation

If suspension bolt becomes longer, do reinforcement of earthquake resistant.

For grid ceiling
When suspension bolt length is over 500mm, or the gap between the ceiling and roof is over
700mm, apply earthquake resistant brace to the bolt.

In case the unit is hanged directly from the slab and is installed on the ceiling plane which has
enough strength.
When suspension bolt length is over 1000mm, apply the earthquake resistant brace to the bolt.

Prepare four (4) sets of suspension bolt, nut and spring washer (M10 or M8) on site.

Ceiling opening, Suspension bolts pitch, Pipe position

④

Installation of indoor unit

Work procedure

1. This units is designed for 2 x 2 grid ceiling.

If necessary, please detach the T bar temporarily before you install it.
If it is installed on a ceiling other than 2 x 2 grid ceiling, provide an inspection port on the control box
side.

2. Arrange the suspension bolt at the right position (530mm×530mm).
3. Make sure to use four suspension bolts and fix them so as to be able to hold 500N load.
4. Ensure that the lower end of the suspension bolt should be 45mm above the ceiling plane.

Temporarily put the four lower nuts 88mm above the ceiling plane and the upper nuts on distant
place from the lower nuts in order not to obstruct hanging the indoor unit or adjust the indoor unit
position, and then hang the indoor unit.

T bar Ceiling

panel

Control box

5. Adjust the indoor unit position after hanging it by inserting the level gauge attached on the package

into the air supply port and checking if the gap between the ceiling plane and the indoor unit is
appropriate. In order to adjust the indoor unit position, adjust the lower nuts while the upper nuts are
put on distant place. Confirm there is no backlash between the hanger plate for suspension bolt and
the lower nut and washer.

88mm

Suspension bolt

Nut (upper)

Flat washer

Spring washer

Nut (lower)

Ceiling surface

45mm

Refrigerant piping

Drain piping

Level gauge

T-bar

Ceiling panel

(insulation)

Use level gauges as

reference, adjust the

bottom to the face of

the indoor unit.

Diffuser

Level gauge
(insulation)

T-bar

Ceiling panel

Use level gauges as

reference, adjust the

bottom to the face of

the indoor unit.

When the ceiling panel comes below the T

bar, align the bottom of the level gauge to

the lower face of the ceiling panel.

Diffuser

Unit

Correct

Unit

Wrong

Touch the nut (lower) and

washer without any play

Play is left between the fixture

and the nut (lower) and washer.

Symbol Content

Air outlet opening

for ducting

Gas piping

Liquid piping

Drain piping

Hole for wiring

Suspension bolts

Decorative panel

Air supply

Air return

grille

Hanger plate for

suspension bolt

(Installed on site)

Drain hose piece

(Accessory)

Control

box

Holes for

tapping screws

Hole

145

325

□

570

45 or more

132

192

210

248

185
190

223

326

350

530(

Suspension bolts pitch)

530 (Suspension bolts pitch)

556

200

□

413

□

700

140

100

140

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Summary of Contents for SCM100ZJ-S1

Page 1: ...J S1 INDOOR UNIT Wall mounted type SRK20ZJX S 25ZJX S 35ZJX S 50ZJX S1 60ZJX S1 SRK25ZJR S 35ZJR S SRK20ZJ S 25ZJ S 35ZJ S 50ZJ S SRK71ZK S Floor standing type SRF25ZJX S 35ZJX S 50ZJX S1 Ceiling cass...

Page 2: ...only 12 4 Custom cord switching procedure 11 5 Selection of the annual cooling function 11 6 High power operation 12 7 Econo operation 9 3 Auto restart function 2 Unit ON OFF button 9 5 1 Remote contr...

Page 3: ...l remote display output 39 7 Heating low outdoor temperature protective control 44 9 Crankcase heater 44 10 Inching prevention 8 Freezing cycle system protective control 44 43 1 Frost prevention contr...

Page 4: ...Diagnosing of microcomputer circuit 77 2 2 2 Troubleshooting flow 90 2 2 FDTC FDEN and FDUM series 77 5 1 Outdoor units 157 5 2 Indoor units 173 11 Outdoor unit inspection points 71 91 2 Troubleshoot...

Page 5: ...oncealed type SRR Table of models Wall mounted type SRK ZJX S Wall mounted type SRK ZJ S Wall mounted type SRK ZJR S Wall mounted type SRK ZK S Duct connected Low Middle static pressure type FDUM Ceil...

Page 6: ...urrent time and timer function as well This button cancels the ON timer OFF timer and SLEEP operation CANCEL button The above illustration shows all controls but in practice only the relevant parts ar...

Page 7: ...HT button This button changes the air flow left right direction CANCEL button This button cancels the ON timer OFF timer and SLEEP operation ACL switch Switch for resetting microcomputer OFF TIMER but...

Page 8: ...controls but in practice only the relevant parts are shown Each time the button is pressed the display is switched over in turn FAN SPEED button This button changes the HIGH POWER ECONOMY mode HI POW...

Page 9: ...ceiver ON OFF 1 5 sec 0 5 sec HOT KEEP 3 sec 1 sec ON OFF CLEAN operation c SRR series Each time the button is pressed the display is switched over in turn These buttons set the room temperature These...

Page 10: ...t 26 C Unit ON OFF button Unit ON OFF button Unit ON OFF button Model SRK20 25 35ZJX S 50 60ZJX S1 Model SRK25 35ZJR S 20 25 35 50ZJ S Model SRF25 35ZJX S 50ZJX S1 Model SRR25 35 50 60ZJ S 3 Auto rest...

Page 11: ...g procedure Be sure to modify both boards If only one board is modified receiving and operation cannot be done a Modifying the indoor printed circuit board Take out the printed circuit board from the...

Page 12: ...ZJ S Model SRK20 25 35ZJX S 50 60ZJX S1 71ZK S SRF25 35ZJX S 50ZJX S1 SRR25 35 50 60ZJ S Model A SRK20 25 35ZJX S 50 60ZJX S1 SRR25 35 50 60ZJ S 17 SRK71ZK S 7 SRK25 35ZJR S SRK20 25 35 50ZJ S 10 Jump...

Page 13: ...itiate a soft operation with the power suppressed in order to avoid an excessive cooling or heating The unit operate 1 5 higher than the setting temperature during cooling or 2 5 lower than that durin...

Page 14: ...r Right Approx 20 Right Approx 50 Louver stopped Swing c Swing 1 Swing flap Flap moves in upward and downward directions continuously 2 Swing louver Louver moves in left and right directions continuou...

Page 15: ...ss the AIRFLOW UP DOWN button the mode changes as follows b Swing 1 Swing flap Flap moves in upward and downward directions continuously c Memory flap Flap stopped When you press the AIRFLOW button on...

Page 16: ...r until indoor temperature is close to reaching the setting point And then the air outlet will change to both outlets in order to spread comfort air to every corner 2 HEAT operation a In case both low...

Page 17: ...owing Fixed Operation mode Indoor temp Setting temp 2 C Setting temp Indoor temp 2 C At heating At cooling Air flow direction contorol 2 C Setting temp Indoor temp 5 C 2 C Indoor temp Setting temp 5 C...

Page 18: ...setting the installation location while the installation location setting display illuminates Airflow range Airflow range Airflow range Left End Installation Center Installation Right End Installatio...

Page 19: ...stop 2 Inciuding the Fan operation according to the mismatch of operation modes 1 Control A a If the float switch detects any anomalous draining condition the unit stops with the anomalous stop and t...

Page 20: ...button is pressed Invalid Operation is displayed but it does not mean a failure Cover AIR CON No button Display the indoor unit number connected to this remote controller CHECK button This button is u...

Page 21: ...tment mode Cover AIR CON No button Display the indoor unit number connected to this remote controller CHECK button This button is used at servicing TEST button This button is used during test operatio...

Page 22: ...when this is pressed once again it stops operating Used to swing the louver Every time this button is pressed displays switch as below Sets room temperature by pressing or button Sets time when settin...

Page 23: ...Operation mode Airflow volume mode Room temperature setting Louver auto swing stop However the stop position 4 position is cancelled so that it returns to Position 1 Remote controller function items w...

Page 24: ...re C b Operations of functional items during cooling heating Cooling Heating Dehumidify Fan Operation Functional item Thermostat ON Thermostat ON Thermostat OFF Thermostat OFF Hot start Defrost Compre...

Page 25: ...is met the hot start control is performed 1 From stop to heating operation 2 From cooling to heating operation 3 Form heating thermostat OFF to ON 4 After completing the defrost control only on units...

Page 26: ...tat OFF 1 Following fan controls during the heating thermostat OFF can be selected with the indoor function setting of the wired remote controller Low fan speed Factory default Set fan speed Intermitt...

Page 27: ...osition LCD for 10 second The display changes to the SWING display 3 seconds later 2 When the Low fan speed Factory default is selected the following taps are used for the indoor fans For AC motor Lo...

Page 28: ...r Compressor will not stop for 3 minutes after the compressor ON However it stops immediately when the unit is stopped by means of the ON OFF switch or by when the thermister turned OFF the change of...

Page 29: ...o communication with the outdoor unit but it allows performing operation in respective modes by operating the remote controller 4 Drain pump test run mode As the drain pump test run is established the...

Page 30: ...red remote controller p Heating overload protection 1 If the indoor heat exchanger temperature detected with ThI R at 63 C or higher is detected for 2 seconds continuously the compressor stops When th...

Page 31: ...in a higher ceiling room the airflow volume mode control can be changed with the wired remote controller indoor unit function FAN SPEED SET PHi Hi PHi Me PHi Hi Me STANDARD HIGH SPEED1 2 FAN SPEED SE...

Page 32: ...l and start stop operation of the unit from the wired remote controller becomes not available 2 In case that Operation permission prohibition mode setting is Valid and External input setting is Pulse...

Page 33: ...Local setting It is effective only when the input signal to CnT 6 is changed OFF ON and at that time unit operation ON OFF is inverted 3 Remote operation a In case of multiple units Max 16 indoor unit...

Page 34: ...low 37 C at next sampling present number of revolutions of indoor unit fan speed is reduced by 10min 1 3 End conditions Indoor fan speed is reduced to the setting airflow volume when the compressor OF...

Page 35: ...ZJ S 1 4 6 7 kW SCM45ZJ S 1 4 7 2 kW SCM50ZJ S1 1 4 7 3 kW SCM60ZJ S1 1 5 7 6 kW SCM71ZJ S1 1 5 9 1 kW SCM80ZJ S1 1 5 9 5 kW Model Capacity SCM100ZJ S1 1 5 13 3 kW SCM125ZJ S1 1 5 13 8 kW 3 Hot keep o...

Page 36: ...7 minutes Hot keep operation 20 20 15 10 5 0 5 10 15 10 5 0 Outdoor air temperature Outdoor heat exchanger temperature Defrost operation start Defrost operation start temperature b Tho R Tho R Tho R 2...

Page 37: ...d b Outdoor compressor speed control Model Capacity SCM40ZJ S 1 8 5 8 kW SCM45ZJ S 1 8 6 3 kW SCM50ZJ S1 1 8 6 9 kW SCM60ZJ S1 1 8 7 3 kW SCM80ZJ S1 1 8 8 7 kW SCM71ZJ S1 1 8 8 3 kW Model Capacity SCM...

Page 38: ...temperature Dehumidifying 18 19 20 21 22 23 24 25 26 27 28 29 30 Heating 20 21 22 23 24 25 26 27 28 29 30 31 32 Signals of wireless remote control Display 6 5 4 3 2 1 0 1 2 3 4 5 6 Setting Cooling 18...

Page 39: ...the case of CnT input OFF Operation prohibition a Air conditioner is unable to control the operation stop ect in accordance with signals from the remote controller signal wire b Air conditioner stops...

Page 40: ...2 Control of input signal Control of input signal switch input timer input connectors CNT are provided on the printed circuit board of indoor unit However when the operation of air conditioner is und...

Page 41: ...ower limit speed Model Forced outage Operation instruction Depends on operation mode 8 2 5 Reset Protective control 40 41 46 47 OFF ON1 ON2 Outdoor air temperature C 25 31 Tho A b Detail of operation...

Page 42: ...f compressor command speed is set to A or C rps the speed is kept to A or C rps c Reset conditions When the either of the following condition is satisfied When the outdoor air temperature Tho R become...

Page 43: ...control speed NP Normal Retention NP 4rps NP 8rps Sampling time s Normal 20 20 20 Th2 NP P1 P2 P3 10 NP 115 45 52 57 5 115 NP 120 45 43 52 50 57 5 55 120 NP 43 50 55 Unit C Model SCM40 45 50 Th2 NP P...

Page 44: ...ns 8 6 4 6 Lower limit 40 rps model 50 45 rps Lower limit 35 rps Normal operation Outdoor air temperature C 6 Tho A Tho A Tho A Tho A Tho A Tho A 10 or 17 model 60 71 80 13 A or C B or D B or D B or D...

Page 45: ...s 2 Compressor stops by the abnormal stop when the compressor stop has occurred 3 times in one hour Unit Compressor command speed Indoor air temperature Th1 Indoor air temperature Th1 and indoor heat...

Page 46: ...urpose b Detail of operation Cooling Heating Lower limit speed Item Model 115 SCM40 45 50 SCM60 71 80 100 125 32 rps 32 rps 32 rps 25 rps Model SCM40 45 50 60 71 80 Detecting the outdoor unit inverter...

Page 47: ...31 but 66 or less 4th speed 3rd speed Less than 31 More than 46 66 or more but 66 or less 6th speed 5th speed More than 31 but 46 or less 4th speed 3rd speed Cooling Heating Compressor speed rps Outdo...

Page 48: ...ure Cooling Model SCM40 45 50 60 71 80 a Operating conditions b Detail of operation c Reset conditions Outdoor air temperature 10 C Outdoor air temperature 10 C Outdoor fan Outdoor air temperature 16...

Page 49: ...oor unit fan tap is brought up by 3 steps Higher limit is 6th tap c Release condition When the compressor is turned off or the outdoor heat exchanger temperature Tho R has dropped lower than 40 C Heat...

Page 50: ...AF 110 C Tho AF 110 C Protection control speed NP Normal Retention NP 2rps NP 4rps 0rps Sampling time s Normal 20 20 20 c Resetting condition When the power transistor temperature is lower than 90 C o...

Page 51: ...M 110 2 MAINTENANCE DATA 2 1 SRK SRF and SRR series 1 Cautions 2 Items to check before troubleshooting 3 Troubleshooting procedure If the air conditioner does not run at all Important YES YES YES NO N...

Page 52: ...51 11 SCM SM 110 4 Troubleshooting procedure If the air conditioner runs NO NO NO NO YES YES YES YES 52 54 62 54 62...

Page 53: ...ps Defective compressor Open phase on compressor Defective outdoor PCB Service valve is closed Refrigerant is insuf Outdoor sub PCB communication error Outdoor sub PCB fauly Poor connection of wire be...

Page 54: ...r 15 minutes Detected more than 15 seconds 4 times Limit switch error Defective limit switch Defective suction panel set Defective indoor control PCB Actuation limit switch When the outdoor unit s fan...

Page 55: ...unit Data are recorded for up to 5 previous occurrences Data which are older than the 5th previous occurrence are erased In addition data on the temperature of each sensor room temperature indoor hea...

Page 56: ...g 21 C 22 C 23 C 24 C 25 C 1 time previous previous time 2 times previous 3 times previous 4 times previous 5 times previous Only for indoor heat exchanger sensor 2 Remote controller setting Indicates...

Page 57: ...he stop stop code 2 times previous when the air conditioner was stopped by protective stop control Displays the reason for the stop stop code 3 times previous when the air conditioner was stopped by p...

Page 58: ...coad or Error coad Error content Cause Occurrence conditions Error display Auto recovery OFF 3 times flash 5 times flash 6 times flash 8 times flash 4 times flash 2 times 2 times 3 times 3 times 3 ti...

Page 59: ...1 s digit Stop coad or Error coad Error content Cause Occurrence conditions Error display Auto recovery OFF 3 times flash 5 times flash 6 times flash 4 times flash 2 times 2 times 3 times 3 times 3 t...

Page 60: ...ressor stops Indoor unit fan speed drops Indoor heat exchanger sensor is broken wire Anti frost control 85 5 times flash When the anti frost control operates and the compressor stops during cooling op...

Page 61: ...ntroller information tables 2SHUDWLRQ VZLWFKLQJ RUN light Operation switching Display pattern when in service mode Operation switching when there is an abnormal stop 0 1 2 4 3 AUTO DRY COOL FAN HEAT D...

Page 62: ...34 44 54 64 74 84 94 55 45 35 25 15 5 5 15 25 35 45 55 65 75 85 95 56 46 36 26 16 6 6 16 26 36 46 56 66 76 86 96 57 47 37 27 17 7 7 17 27 37 47 57 67 77 87 97 58 48 38 28 18 8 8 18 28 38 48 58 68 78 8...

Page 63: ...32 12 12 32 52 72 92 112 132 54 34 14 14 34 54 74 94 114 134 56 36 16 16 36 56 76 96 116 136 58 38 18 18 38 58 78 98 118 138 No does not sound I QR GDWD DUH UHFRUGHG HUURU FRGH LV QRUPDO WKH GLVSOD IR...

Page 64: ...63 11 SCM SM 110 Service data record form 55...

Page 65: ...0 60 70 0 10 Discharge pipe sensor temperature characteristics Indoor fan motor error Broken sensor wire connector poor connection 0 0 20 40 60 80 100 120 135 20 40 60 80 100 120 140 160 180 Temperatu...

Page 66: ...re at 20 C SCM100 125 0 293 or more at 20 C sub main main main Limit switch anomaly SRK20 25 35 50 60ZJX only Defective limit switch defective indoor control PCB Defective air inlet panel set Is the a...

Page 67: ...SCM SM 110 Over heat of compressor Gas shortage defective discharge pipe sensor Error of signal transmission Wiring error including power cable defective indoor outdoor PCB 64 main indoor indoor outdo...

Page 68: ...r Defective fan motor connector poor connection defective outdoor PCB Power supply reset Is it normalized Malfunction by temporary noise Replace fan motor If the error persists after replacing the fan...

Page 69: ...sensor operation Failure mode Control input circuit resding Air conditioning system operation See pages 65 Note 1 SRK35ZJR S 35 50ZJ S 50 60ZJX S1 71ZK S SRF25 35 50 only main Has an overflow develop...

Page 70: ...YES YES YES NO NO NO b Indoor unit fan motor check procedure 1 Indoor PCB output check 2 Fan motor resistance check FMI DC15V Indoor PCB DC 280V DC several V 4 6 V CNU GND Blue Yellow White Black Red...

Page 71: ...g mistakes etc If no problems are found check the output of the power transistor 2 Output inspection procedure Disconnect the terminals for the compresseor If an output such as the one shown in the fi...

Page 72: ...n page 64 Power source and serial signal inspection to AC 220 230 240V to Normal if the voltage oscillates between DC 0 and approx 20V Color Marks Mark Color BK BR Black Brown RD Y G Red Yellow Green...

Page 73: ...pection to AC 220 230 240V to Normal if the voltage oscillates between DC 0 and approx 20V UNIT A UNIT B UNIT C Power supply 1 Phase 220 240V 50Hz Inspection of electronic expansion valve See page 76...

Page 74: ...l if the voltage oscillates between DC 0 and approx 20V UNIT A UNIT B UNIT C UNIT D Power supply 1 Phase 220 240V 50Hz Inspection of electronic expansion valve See page 76 Color Marks Mark Color BK BR...

Page 75: ...3 Circuit breaker Earth leakage breaker TB1 PWB5 NOISE PWB3 CT1 DS L A F PWB2 INV PWB IPM 30A 600V CM F2 PWB1 CONTROL PWB PWB4 SUB PWB C1 EEV A EEV B EEV C EEV D EEV E TB2 TB3 Tho R Tho D Tho S Tho A...

Page 76: ...1 2 3 1 2 3 1 2 3 1 2 3 Circuit breaker Earth leakage breaker TB1 PWB5 NOISE PWB3 CT1 DS L A F PWB2 INV PWB IPM 30A 600V CM F PWB1 CONTROL PWB PWB4 SUB PWB C1 EEV A EEV B EEV C EEV D EEV E EEV F TB2...

Page 77: ...V DC15V Measuring point Resistance when normal DC several V 0 6V DC several V 0 5V DC280V DC15V Outdoor main PCB GND DC280V Red Blue 20 M or higher 20 k or higher Brown Blue Measuring point Resistance...

Page 78: ...oor contact of temperature thermistor connector Replacement repair of temper ature thermistor 107 Indoor control PCB Defective indoor control PCB Defective temperature thermistor input circuit Replace...

Page 79: ...eplacement repair of temperature sensor 121 Outdoor main PCB Defective outdoor main PCB Defective temperature sensor input circuit Replacement of PCB Stays OFF Keeps flashing 1 time flash Outdoor main...

Page 80: ...tion Heating operation status Higher outdoor high pressure Repair 122 High pressure sensor Defective high pressure sensor Replacement repair of temperature sensor Outdoor control PCB Defective outdoor...

Page 81: ...with one remote controller Whenever excessively connected indoor units is detected after power ON Return air temperature thermistor anomaly 50 C or lower is detected for 5 seconds continuously within...

Page 82: ...anger remote controller switch and fuse Note 1 With regard to parts of high voltage circuits and refrigeration cycle judge it according to ordinary inspection methods b Instruction of how to replace i...

Page 83: ...rol PCB Parts mounting are different by the kind of PCB ON OFF Part number SW2 Blue Address setting SW7 Function setting CNT Blue External switch CNJ White Louver motor CNN Yellow Thermistor Heat exch...

Page 84: ...wirings to the PCB Wiring connector color should match with the color of connector of the PCB Note 2 6 Let the wiring red and blue pass beneath the yellow green wiring and bind together with band 7 Sc...

Page 85: ...SW6 Select the same capacity with the PCB removed from the unit Replace the PCB 1 Fix the PCB so as not to pitch the cords 2 Connect connectors to the PCB Connect a cable connector with the PCB conne...

Page 86: ...and connect it Control PCB Parts mounting are different by the kind of PCB ON OFF item switch Address SW2 Content of control Plural indoor units control by 1 remote controller Test run SW7 1 Normal Op...

Page 87: ...ted to the connector are removed 3 Fix the board such that it will not pinch any of the wires 4 Reconnect the wirings to the PCB Wiring connector color should match with the color of connector of the...

Page 88: ...l mode Valid Reserved keep OFF Test run Drain motor Normal Test run Valid Invalid Normal Model selection As per model See table 1 Remarks Address No setting at plural indoor units control by 1 R C 0 F...

Page 89: ...press the button which allows you to go back to the indoor unit selection screen Pressing the button will stop displaying data Pressing the RESET button during remote control unit operation will undo...

Page 90: ...dgment 1 Power ON and start check operation on cooling or heating mode 2 Check ON OFF status of 6 LED s on the checker 3 Judge the PCB by ON OFF status of 6 LED s on the checker 4 Stop check operation...

Page 91: ...units more than 17 units by controlling with one remote controller 111 E16 Indoor fan motor anomaly FDTC and FDUM only 112 E19 Indoor unit operation check drain motor check setting error 113 E20 Indo...

Page 92: ...mpressor or other respective parts NO YES YES NO YES YES YES NO NO Is the compressor operating NO YES NO Note 1 Outdoor 35 C Indoor 27 C 1 WAIT It is normal This unit is designed to start in the soft...

Page 93: ...s phenomenon NO YES YES NO YES YES YES NO NO Is the compressor operating NO YES NO Note 1 Outdoor 7 C Indoor 20 C 1 WAIT It is normal This unit is designed to start in the soft start mode by detecting...

Page 94: ...pressor Immediately after installation or when the unit has been left for long time without power supply the insulation resistance may drop to a few M because of refrigerant migrated in the compressor...

Page 95: ...s into the gap if necessary Prevent the vibration from transmitting to wall and etc by fixing pipes on the wall or wrapping rubber cushion around the pipe which goes through the hole in the wall or ap...

Page 96: ...rough inside of piping of air conditioner It is likely to occur particularly during cooling or defrosting in the heating mode It is normal The noise vibration occurs when the refrigerant starts or sto...

Page 97: ...ntrusion of air nitrogen etc In such occasion it is necessary to recover refrigerant vacuum dry and recharge refrigerant Since there could be many causes of noise vibration the above do not cover all...

Page 98: ...ring broken Is LM locked Check at the indoor unit side LM louver motor Is the louver operable with the remote controller YES NO Does the louver operate at the power on YES NO YES NO Operate after wait...

Page 99: ...S IsAC19V or higher detected between Red Red CNW2 at transformer secondary side YES YES NO 3 FDTC FDUM Series FDEN Series Note 3 for GND NO NO Is DC5V detected between of CNW2 FDUM CNW1 NO YES YES Is...

Page 100: ...tected between X Y of indoor unit terminal block YES YES YES NO Is 24V or higher between Brown Brown of transformer secondary side Is DC180V between of CNW2 FDUM CNW1 FDEN Series FDTC FDUM Series YES...

Page 101: ...he connecting wire between the indoor and outdoor unit Power supply reset NO YES YES NO NO NO NO NO YES YES YES Set one remote controller for Master and the other for Slave Set SW1 on remote controlle...

Page 102: ...r on with remote controller 3 Condition of Error displayed Same as above 4 Presumable cause Improper setting Surrounding environment Defective remote controller communication circuit Faulty indoor con...

Page 103: ...l block NO Is approx DC20V detected between on the indoor unit terminal block NO YES WAIT YES YES YES YES To next page Defective outdoor sub PCB Replace Defective indoor control PCB Replace Replace in...

Page 104: ...eplacing the power supply fuse Diagnosis Countermeasure Replace the outdoor sub PCB YES YES NO YES Replace the outdoor main PCB Replace the reactor Isn t there a short circuit between phases of outdoo...

Page 105: ...wires at the remote controller side after disconnecting the remote controller Are wires connected properly between the indoor and the outdoor units Is approx DC20V detected between on the outdoor unit...

Page 106: ...en after 3 minutes Power reset NO WAIT Malfunction by noise Check peripheral environment Defective indoor control PCB Replace Defective remote controller Replace 2 Error detection method When normal c...

Page 107: ...nection looseness on the outdoor unit terminal block Power reset Note 2 Check for faulty connection or breakage of signal wires between indoor outdoor units YES NO YES NO Repair signal wires Repair si...

Page 108: ...indoor heat exchanger temperature thermistor Replace Defective indoor control PCB Replace Defective indoor unit heat exchanger temperature thermistor input circuit 2 Error detection method Anomalousl...

Page 109: ...rrect Connect connector Defective return air temperature thermistor Replace Defective indoor control PCB Replace Defective return air temperature thermistor input circuit 2 Error detection method Anom...

Page 110: ...r heat exchanger temperature thermistor see the error display E6 YES NO YES NO Error stop Reset Indoor heat exchanger temperature C 56 63 For the characteristics of indoor heat exchanger temperature r...

Page 111: ...iping unclogged Is the drain pipe slop OK NO YES NO NO Check float switch Defective indoor control PCB Replace Defective indoor control PCB Replace Check optional equipment Correct setting to Humidifi...

Page 112: ...odel 5 Troubleshooting All models Diagnosis Countermeasure Aren t more than 17 indoor units connected to one remote controller NO YES Defective remote controller Replace Reduce to 16 or less units 2 E...

Page 113: ...terial Replace the fan motor Check power voltage Replace faulty fan motor and power PCB Replace fan motor If the error persists after replacing the fan motor replace the indoor control PCB Malfunction...

Page 114: ...door control PCB ON E19 occurs when the power ON NO YES Defective indoor control PCB Defective SW7 Replace Turn SW7 1 on the indoor control PCB OFF and reset the power 2 Error detection method After i...

Page 115: ...er supply reset Remove foreign material Replace the fan motor Check power voltage Replace faulty fan motor and power PCB Replace fan motor If the error persists after replacing the fan motor replace t...

Page 116: ...ter 3 minutes delay the compressor starts again automatically but if this error occurs again within 60 minutes after the initial detection 4 Presumable cause Faulty connection of remote controller tem...

Page 117: ...ion of outdoor unit short circuited Are installation spaces adequate Isn t there any fouling or clogging on heater exchanger Control operation check Defective outdoor main PCB Replace Excessive refrig...

Page 118: ...n heater exchanger Control operation check Defective outdoor control PCB Replace Excessive refrigerant amount Recharge refrigerant by weighing proper amount on a scale 2 Error detection method For the...

Page 119: ...O NO Replace discharge pipe temperature sensor Insufficient refrigerant amount Recharge refrigerant by weighing proper amount on a scale Control operation check Defective outdoor main control PCB Repl...

Page 120: ...ect connector Defective outdoor heat exchanger temperature sensor Replace Defective outdoor main control PCB Replace Defective outdoor heat exchanger temperature sensor input circuit 2 Error detection...

Page 121: ...nector Defective outdoor air temperature sensor Replace Defective outdoor main control PCB Replace Defective outdoor air temperature sensor input circuit 2 Error detection method Detection of anomalou...

Page 122: ...C Broken wire Shot circuit Correct connector Defective discharge pipe temperature sensor Replace Defective outdoor main control PCB Replace Defective temperature sensor input circuit 2 Error detectio...

Page 123: ...n heater exchanger Control operation check Defective outdoor control PCB Replace Excessive refrigerant amount Recharge refrigerant by weighing proper amount on a scale 2 Error detection method For the...

Page 124: ...ransistor temperature thermistor connector connection OK Is it OK the fixing to power transistor radiator fin Does it recur NO 0 20 40 60 80 100 120 140 160 180 200 0 20 40 60 80 100 120 140 Temperatu...

Page 125: ...re at 20 C NO NO NO Check power supply Open the valves Check refrigerant amount and refregerant circuit In case of transitional increase of high pressure and or test run several times restarting may r...

Page 126: ...fully opened Is the filter clogged At heating does the indoor fan motor run Are the service valves fully opened Is the filter clogged Is there any liquid flooding Is the superheat within normal range...

Page 127: ...he main PCB and the outdoor sub PCB connected properly Is normal state restored YES NO NO NO Correct connector Check why power is not supplied to outdoor sub PCB Connect communication wire securely De...

Page 128: ...on the outdoor sub PCB for foreign matter like dust fouling etc YES Is voltage within the specified range NO Restore normal condition Restore normal condition Remove foreign matter like dust fouling...

Page 129: ...unction by temporary noise 2 Error detection method Detected by rotation speed of outdoor fan motor 3 Condition of Error displayed When actual rotation speed of outdoor fan motor drops to 75min 1 or l...

Page 130: ...60 71 80 only Diagnosis Countermeasure 2 Error detection method 3 Condition of Error displayed 4 Presumable cause Note If the power transistor primary current exceeds the setting value for 3 seconds...

Page 131: ...he control PCB side after disconnecting the connector CNI4 Is DC15V detected on the fan motor connector YES YES YES NO NO Defective inverter PCB Replace Broken harness wire Replace fan motor Defective...

Page 132: ...rect connector Defective suction pipe temperature sensor Replace Defective outdoor sub PCB Replace Defective suction pipe temperature sensor input circuit 2 Error detection method Detection of anomalo...

Page 133: ...place Defective high pressure sensor input circuit OK 2 Error detection method When anomalous voltage pressure is detected 3 Condition of Error displayed If the pressure sensor detects 0V or lower and...

Page 134: ...0 30 40 20 50 Temperature thermistor resistance k Temperature C 5k at 25 C Broken wire Shot circuit Open fully Correct indoor heat exchanger return air temperature thermistor connector connections Def...

Page 135: ...pressor speed of 30 rps or under Same as above Excessive refrigerant amount Indoor outdoor unit installation spaces Faulty compressor Defective outdor air temp sensor Defective outdoor main PCB Diagno...

Page 136: ...age Check refrigerant amount and refrigerant circuit Repalce compressor Defective outdoor main PCB Replace Defective outdoor main PCB Replace Repalce compressor 2 Error detection method If it fails to...

Page 137: ...compressor for insulation resistance Replace compressor if necessary Defective outdoor main PCB Replace 2 Error detection method Compressor rotor position 3 Condition of Error displayed If it fails a...

Page 138: ...flash Over heat of compressor 6 Time flash Error of signal transmission 7 Time flash Lock of compressor 8 Time flash Sensor error Except discharge pipe sensor Four sec light and Discharge pipe sensor...

Page 139: ...anger sensor Outdoor air temp sensor Discharge pipe temp sensor CM Tho R Connector 20S 4 Way valve coil Suction pipe temp sensor Tho S FMo Fan motor Terminal block TB1 TB2 outdoor unit HEATER Crank ca...

Page 140: ...duced in the control box don t touch electrical parts in the control box for 5 minutes after cutting power supply CNA CN20S EEV A EEV B EEV C EEV D R Compressor motor Electric expansion valve coil Rea...

Page 141: ...ge port in the unit and the gas service valves are different during the cooling operation and the heating operation High pressure is replaced with the low pressure depending on whether it is in the co...

Page 142: ...rge port in the unit and the gas service valves are different during the cooling operation and the heating operation High pressure is replaced with the low pressure depending on whether it is in the c...

Page 143: ...5 5 5 5 IM RD WH RD WH BK BL Y Y G BK t Th2 1 Th2 2 LM1 LM2 SM1 SM2 FMI DS t t TO OUTDOOR UNIT HEAT EXCHANGER 1 2 N 3 POWER WIRES SIGNAL WIRE 1 2 N 3 Power source 1 phase 220 240 V 50Hz T Color Marks...

Page 144: ...Red BL RD White WH Yellow Green Y G Yellow Y Color Mark t Th21 Th22 Th3 LM1 LM2 SM1 SM2 FMI Heat exch sensor Humidity sensor Fan motor Room temp sensor Flap motor Th1 Th2 Th3 Diode stack DS Fuse F FMI...

Page 145: ...K UP SW UNIT BK WH RD Y G HEAT EXCHANGER 2 N 3 Y G HD ONLY t o 2 t o R AMP 2 HEAT EXCHANGER 5 FMI SMI LM1 LM2 F Va ThI Th2 Th3 T DS Blue Black BK Red BL RD White WH Yellow Green Y G Color Mark Heat ex...

Page 146: ...2 Th3 LM1 LM2 SM1 FMI DS t t TO OUTDOOR UNIT HEAT EXCHANGER 1 2 N 3 POWER WIRES SIGNAL WIRE 1 2 N 3 Power source 220 230 240V 50Hz T 8 Color Marks Blue Black BK Red BL RD White WH Yellow Green Y G Yel...

Page 147: ...ock T Damper motor DM1 SM1 2 1 2 Damper arm motor Description Item Varistor Va DM2 250V F G 3 15A S N Va CNU CNS INTERFACE KIT SC BIKN E CNG CNE DISPLAY WIRELESS RECEIVER J CNF U M HEAT 1 3 4 5 6 BACK...

Page 148: ...K Red BL RD White WH Yellow Green Y G Yellow Y Color Mark t Th21 Th22 Th3 DM1 DM2 SM1 SM2 FMI Heat exch sensor Humidity sensor Fan motor Room temp sensor Flap motor Th1 Th2 Th3 Diode stack DS Fuse F C...

Page 149: ...G 1 2 N 3 WH BK Y G RD S N J RD BK WH BOX CONTROL U 8 2 2 2 RD CNW M F 250V 0 16A RD OR 5 1 WH WH BK 2 BK 10 BK L CNS FM DM Th1 Th2 Th3 t TO OUTDOOR UNIT POWER WIRES SIGNAL WIRE 1 2 N 3 Power source...

Page 150: ...6 7 8 9 BK BK BK BK 10 BK 11 BK 12 BK 13 BK 14 BK 15 BK 16 BK 17 BK BK 18 BK 19 BK 20 BK 1 2 3 4 5 BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK BK 1 2 3 4 5 1 2 3 4 5 1 2 3 4 5 I FS LM1...

Page 151: ...ouver motor SW6 Model capacity setting 7 segment display Switches for setting SW1 LED2 Back up switch Operation Stop SW4 Indication lamp Green Normal operation LED3 Indication lamp Yellow Timer Inspec...

Page 152: ...BK t BK 1 2 3 4 5 6 BK t BK 1 2 XR1 XR2 XR3 XR4 XR5 Remote operation Option 1 2 3 4 5 6 12 SW2 SW6 SW5 SW7 LED E2 LED E3 X Y 1 3 X Y t TB2 WH BK WH 8 9 10 11 12 8 9 10 11 12 CNW2 WH CNW1 WH CNB WH CNN...

Page 153: ...Tho R Heat exchanger Heat exchanger Liquid line Gas line 6 35 6 35 9 52 9 52 Strainer Humidity sensor 1 Compressor 4 way valve Service valve Liquid Capillary tube Capillary tube Electric expansion va...

Page 154: ...ho A Accumlator Sensor Tho S Service valve Liquid Electronic expansion valve Compressor 4way valve Discharge Suction Sensor Tho R Heat exchanger Cooling cycle Heating cycle 9 52 or 12 7 9 52 or 12 7 9...

Page 155: ...EEVC EEVB Strainer Discharge Suction Sensor Tho D Receiver Sensor Tho S Service valve Liquid Electronic expansion valve Compressor Oil separator 4way valve Sensor Heat exchanger Tho A Sensor Tho R Ca...

Page 156: ...arge Suction Receiver HPS Service valve Liquid Electronic expansion valve Electronic expansion valve EEV H Compressor Oil separator 4way valve Thermistor Heat exchanger Tho A Accumlator Accumlator 1 G...

Page 157: ...iver HPS Service valve Liquid Electronic expansion valve Electronic expansion valve EEV H Compressor Oil separator 4way valve Heat exchanger Accumlator Accumlator 1 Gas line 20 25 35 type 9 52 50 60 t...

Page 158: ...Incorrect installation may result in overheating and fire Use the prescribed cables for electrical connection tighten the cables securely in terminal block and relieve the cables correctly to prevent...

Page 159: ...at it cannot tall the service ting and fire al connection block and overloading the n cause or fire due to y in the event of a risk of electric o the unexpected the pipe after wn work or is in operati...

Page 160: ...so that dust and sand do not enter the pipe until they are When connecting the pipes to the outdoor unit be careful about the discharge of fluorocarbon Make sure to match the pipes between the indoor...

Page 161: ...rning on the power Conduct a test run again and ensure that the unit operates properly At the same time explain to the customer how to use the unit and how to take care of the unit following the insta...

Page 162: ...box Install the service panel correctly Incorrect installation may result in overheating and fire Use the prescribed cables for electrical connection tighten the cables securely in terminal block and...

Page 163: ...tion ied with the units es between shocks due to main power or switch f at least 3mm so that it cannot tall the service ting and fire al connection block and overloading the n cause or fire due to y i...

Page 164: ...ypr flare tool for R410A Conventional R22 flare tool Clutch type Wing nut type Measurement B mm 6 35 0 0 0 5 1 0 1 5 1 5 2 0 9 52 0 0 0 5 1 0 1 5 1 5 2 0 12 7 0 0 0 5 1 0 1 5 2 0 2 5 Securely fit the...

Page 165: ...n and before turning on the power Conduct a test run again and ensure that the unit operates properly At the same time explain to the customer how to use the unit and how to take care of the unit foll...

Page 166: ...E mSF t 6TF UIF QSFTDSJCFE DBCMFT GPS FMFDUSJDBM DPOOFDUJPO UJHIUFO UIF DBCMFT TFDVSFMZ JO UFSNJOBM CMPDL BOE SFMJFWF UIF DBCMFT DPSSFDUMZ UP QSFWFOU PWFSMPBEJOH UIF UFSNJOBM CMPDLT PPTF DPOOFDUJPOT P...

Page 167: ...L BOE PWFSMPBEJOH UIF BO DBVTF PS mSF EVF UP Z JO UIF FWFOU PG B SJTL PG FMFDUSJD UP UIF VOFYQFDUFE H UIF QJQF BGUFS PXO XPSL TPS JT JO PQFSBUJPO NJYFE JO UIF MPTJPO BOE JOKVSJFT JOH DZDMF IF JOTUBMMB...

Page 168: ...se note that measurement B protrusion from the aring block will vary depending on the type of a are tool in use If a conventional are tool is used please use a copper pipe gauge or a similar instrumen...

Page 169: ...UI DBCMF UP UIF GPMMPXJOH TVCTUBODFT DBVTFT EBOHFSPVT GBJMVSFT UIFSFGPSF JU TIBMM OFWFS CF EPOF JUZ XBUFS QJQF 5PXO HBT QJQF 57 BOUFOOB MJHIUOJOH DPOEVDUPS UFMFQIPOFMJOF FUD IFDL UIF GPMMPXJOH QPJOUT...

Page 170: ...stall the service panel correctly Incorrect installation may result in overheating and fire Use the prescribed cables for electrical connection tighten the cables securely in terminal block and reliev...

Page 171: ...Examples of installation mm L1 L2 L3 Open 300 150 Open 5 300 500 Open 150 Demensions any user can read by using suitable t the high position 2A918 C CONDITIONER lied with the units es between shocks...

Page 172: ...4 1 8kgf m Gas side 9 52 33 0 42 0N m 3 3 4 2kgf m 12 7 49 0 61 0N m 4 9 6 1kgf m 15 88 68 0 82 0N m 6 8 8 2kgf m piping length hight difference length of chargeless refrigerant pipe one indoor unit M...

Page 173: ...that the unit operates properly At the same time explain to the customer how to use the unit and how to take care of the unit following the installation manual If the compressor does not operate afte...

Page 174: ...installation place For installation work be careful not to get injured with the heat exchanger piping flare portion or screws etc Be sure to insulate the refrigerant pipes so as not to condense the a...

Page 175: ...ion or the radio To prevent interference to images and sounds Places where this unit is not affected by the high frequency equipment or electric equipment Avoid installing this unit in place where the...

Page 176: ...ched insulation pad placed over the heat insulating material s slit area Vinyl tape Use an attached insulation pad for heat insulation Position it so that the slit area faces upward Connect the pipes...

Page 177: ...of indoor unit Installing the air cleaning filters Open the air inlet panel Remove the service panel Remove the wiring clamp Connect the connecting wire securely to the terminal block 1 Connect the co...

Page 178: ...air moisture on them Insufficient insulation can cause condensation which can lead to moisture damage on the ceiling floor furniture and any other valuables When perform the air conditioner operation...

Page 179: ...th specified method If the flare nut were tightened with excess torque this may cause burst and refrigerant leakage after a long period The electrical installation must be carried out by the qualified...

Page 180: ...tional flare tool Please note that measurement B protrusion from the flaring block will vary depending on the type of a flare tool in use If a conventional flare tool is used please use a copper pipe...

Page 181: ...that measurement B protrusion from the flaring block will vary depending on the type of a flare tool in use If a conventional flare tool is used please use a copper pipe gauge or a similar instrument...

Page 182: ...m Insufficient insulation can cause condensation which can lead to moisture damage on the ceiling floor furniture and any other valuables When perform the air conditioner operation cooling or drying o...

Page 183: ...e flare nut were tightened with excess torque this may cause burst and refrigerant leakage after a long period The electrical installation must be carried out by the qualified electrician in accordanc...

Page 184: ...s torque to the flared nuts Otherwise the flared nuts may check depending Arrange the drain hose in a downward angle Avoid the following drain piping Pour water to the drain pan located under the heat...

Page 185: ...ed nuts may check depending CONCERNING TERMINAL CONNECTION FOR AN INTERFACE Remove the air inlet panel lid and front panel Remove the control cover Remove the screw There is a terminal respectively ma...

Page 186: ...TUBMMBUJPO QMBDF t PS JOTUBMMBUJPO XPSL CF DBSFGVM OPU UP HFU JOKVSFE XJUI UIF IFBU FYDIBOHFS QJQJOH GMBSF QPSUJPO PS TDSFXT FUD t F TVSF UP JOTVMBUF UIF SFGSJHFSBOU QJQFT TP BT OPU UP DPOEFOTF UIF BN...

Page 187: ...unit in place where there is much oil mist Places where there is no electric equipment or household under the installing unit Install the indoor unit on flat wall Wireless remote control In case of pi...

Page 188: ...ch type Wing nut type CAUTION Do not apply excess torque to the flared nuts Otherwise the flared nuts may check depending CAUTION Do not pull with a force of larger than 5 kgf Be careful not to stress...

Page 189: ...cable JP173 on the indoor circuit board to control the blow out angle Conventionally operate the remote control switch by holding in your hand Avoid installing it on a clay wall etc Cover 6 Battery I...

Page 190: ...g port such as incorporate the air into the room that may appropriate to ventila tion For example Open the door a little In addition just as above so set up the opening port if the room lapse into neg...

Page 191: ...city for power distribution work Unconformable cables can cause electric leak anomalous heat production or fire This appliance must be connected to main power supply by means of a circuit breaker or s...

Page 192: ...re using the wiring clamp Attach the control lid Clamp Control lid Use a flare tool designed for R410A or a conventional flare tool Please note that measurement B protrusion from the flaring block wil...

Page 193: ...conditioner Clamps Beams Secure the ceiling hanging bolts firmly following the illustrations and other instructions Installing the main unit Attach the washers and nuts to the ceiling hanging bolts A...

Page 194: ...193 11 SCM SM 110 4 Ceiling cassette 4way compact type FDTC refer to page 157 to 172...

Page 195: ...00mm or more 1000mm or more 2500mm or more Obstacle Floor Preparation before installation l If suspension bolt becomes longer do reinforcement of earthquake resistant For grid ceiling When suspension...

Page 196: ...on this end Drain socket The step part Drain hose No adhesive allowed Drain socket Metal plate 10mm Hose clamp Fasten the screw within 5 mm left to the nut Drain hose 2 Prepare a joint for connecting...

Page 197: ...e country and be executed according to the technical standards and other regulations applicable to electrical installation in the country Be sure to use an exclusive circuit l Use specified cord faste...

Page 198: ...197 11 SCM SM 110 PJAO12D786...

Page 199: ...0 5 7 5 7 Note This function is not able to be set with wireless remote controls or simple remote control RCH H3 5 7 5 7 For setting the swing range of other louvers return to 1 and proceed same proce...

Page 200: ...rcuit Earth leakage breaker must be installed If the earth leakage breaker is not installed it can cause fire and electric shocks Use the circuit breaker of correct capacity Circuit breaker should be...

Page 201: ...there is no influence by the heat which cookware generates Areas where not exposed to oil mist powder and or steam directly such as above fryer Areas where lighting device such as fluorescent light or...

Page 202: ...with putty etc to shut off dust Bend the pipe with as big radius as possible and do not bend the pipe repeatedly In addition do not twist and crush the pipes Do a flare connection as follows Make sure...

Page 203: ...upper limit of the movable range 6 Press or button selection of upper limit position Select the upper limit of louver movable range position 1 is the most horizontal and position 6 is the most downwar...

Page 204: ...r unit near the location where there is possibility of flammable gas leakages If the gas leaks and gathers around the unit it could cause fire Do not install and use the unit where corrosive gas such...

Page 205: ...nd services Notes a There must not be obstacle to draw out fan motor marked area b Install refrigerant pipe drain pipe and wiring so as not to cross marked area If suspension bolt becomes longer do re...

Page 206: ...ng sputtering is attached to the main body of the air conditioner on the outlet port Do not remove it until connecting the duct An air filter can be provided on the main body of the air conditioner on...

Page 207: ...over small size clamps and part of the drain hose and fix and wrap it with tapes to wrap and make joint part gapless When sharing a drain pipe for more than one unit lay the main pipe 100mm below the...

Page 208: ...remote controller Indoor unit will control fan speed to keep rated air flow volume at each fan speed setting Lo Uhi 1 MANUAL SETTING You can set required E S P by wired remote controller that calculat...

Page 209: ...supported securely and handled with care not to drop when it is necessary toreplace Notes 2 For the maintenance space to page 204 a Remove the control box and the side panel and remove the screws mar...

Page 210: ...some data 18 Trial run Cooling operation signal is sent to the indoor unit 19 Forced operation of drain pump Forced operation of drain pump is sent to the indoor unit Option parts for SRR 20 Setting...

Page 211: ...iodic check signal is received RAC unit does not have this function 40 Display of check Display of checking in case of signal of error code address from remote control RAC unit does not have this func...

Page 212: ...d remove the service panel 3 After removal of service panel Loosen a screw 4 And then loosen 4 screws and remove the front panel together with the fan guard 5 Loosen a nut and remove the fan propeller...

Page 213: ...sen screws and remove the service panel and top panel 2 Loosen screws and remove the cover and the terminal cover 3 Loosen screws and disconnect all power cables locally installed Caution Be sure to d...

Page 214: ...remove the side panel 5 Untie the string and remove rear and front insulation cover 6 Disconnect the connector of crankcase heater Rear cover Front cover Side panel Side view Rear view Screws Screws...

Page 215: ...ver and the side jacket of compressor 8 Remove the crankcase heater It is available to remove the crankcase heater after removing the compressor 9 Loosen 3 nuts of compressor fixing bolts Top cover Si...

Page 216: ...suction and discharger pipes to remove the compressor Caution When brazing do not forget to disconnect suction pipe temperature sensor Tho S and discharge pipe temperature sensor Tho D from sockets W...

Page 217: ...x 3 Disconnect the connector of CNFAN Note Be sure to do following work after elapsing 3 minutes from power OFF Disconnect the connector of CNFAN 4 Loosen 6 screws and lift up the main PCB 2 Latches o...

Page 218: ...the 4 way valve Disconnect the connector of fan motor CNFAN Disconnect the connector of CNSUB Going to Sub PCB Disconnect the connector of CNTH For Tho A Outdoor air temp Tho R Heat exch temp Tho D D...

Page 219: ...218 11 SCM SM 110 Main PCB upper layer Layout of Main PCB Main PCB Part side Pattern side CNFAN CNTH CN20V Fuse CNSUB U Pink V White W Gray R Black S White C 2 Red S 2 White...

Page 220: ...sconnect the connectors of CNA CNB CNC and CND 2 Loosen screws and disconnect the grounding cables 3 Disconnect the fasten connector of the black cable Note Be sure to do above work after elapsing 3 m...

Page 221: ...er 6 Loosen 4 screws and remove Sub PCB Layout of Sub PCB Black cable White cable to N terminal Pattern side CN20S CNHEAT CN20V CNEEV2 CNMAIN CNTH CNEEV1 RO BK SO WH C 1 RD S 1 WH Screws Screws CNA CN...

Page 222: ...n disconnecting the connector be sure to check the color marked on the top of coil and the color of the connector 2 When replace to a new coil be sure to insert the socket attached to the coil to the...

Page 223: ...222 11 SCM SM 110 4 way valve coil 1 Disconnect the connector 2 Loosen a screw and remove the coil Connector Screw Coil...

Page 224: ...remove the fan grille 2 Loosen the nut and remove the fan propeller 3 Remove the service panel 4 Detach the clamps and cut off the strap 5 Disconnect the connector of CNFAN1 6 Pull out the cable of fa...

Page 225: ...and top panel 2 Loosen screws and remove the cover and the terminal cover 3 Loosen screws and disconnect all cables locally installed Caution Be sure to do above work after turning the power OFF by b...

Page 226: ...onnect the faston connectors from compressor U Red cable V White cable W Blue cable Note Be sure to do above work after elapsing 3 minutes from power OFF 8 Cut off the strap and pull out the thermisto...

Page 227: ...connectors shown in the photo 10 Remove the control unit Continue 2 Loosen the screws 5 pieces shown in the photo 3 Remove the control unit CNF PK 125 only CNE OR CND OR CNCBL CNB BR CNA RD CNEEV1 CN...

Page 228: ...fan motor through the hole on the partition 3 Remove the partition as shown in photo 12 Untie the strings and remove the upper and the lower jackets for compressor Note Be sure to remove the wires of...

Page 229: ...17 Replace to new compressor Note Before placing the new compressor be sure to mount the crankcase heater onto the new compressor properly Control PCB PWB1 on the 1st layer 1 Cut the straps of the wh...

Page 230: ...onnector 3 from the diode stack 4 Disconnect the connector 3 White cable from the diode stack on the 2nd layer Note Be sure to do this work after elapsing 3 minutes from power OFF 5 Take the white cab...

Page 231: ...Be sure to do this work after elapsing 3 minutes from power OFF Control PCB Part side Pattern side CNEEV1 CNFAN1 CNI1 CNA1 CNW CNL1 CNS1 CNP1 CNI3 CNX1 CNTH CNN1 CNA2 CNR1 CNA RD CNB BR CND YE CNE OR...

Page 232: ...to the dismounting procedure for control PCB after loosening 2 screws and disconnect the power cables on secondary side of TB1 2 Loosen 2 screws and remove the cables Red White from TB3 TB4 on the N...

Page 233: ...cables of P1 P2 P3 and N1 N2 N3 4 Disconnect 3 connectors of CNI2 CNI4 and CNACT1 5 Loosen 2 screws for fixing IPM and radiation fin 6 Pinch the head of locking supports 8 pieces and remove the Invert...

Page 234: ...er according to the procedure for control PCB PWB1 and Sub PCB PWB4 2 Loosen 5 screws and disconnect the cables of TB3 TB7 3 Pinch the head of locking supports 4 pieces and remove the N F PCB PWB3 Not...

Page 235: ...onnector be sure to check the color marked on the top of coil and the color of the connector 2 When replace to a new coil be sure to insert the socket attached to the coil to the pipe correctly EEVB E...

Page 236: ...235 11 SCM SM 110 8 CHECKING PROCEDURE 8 1 Models SCM71ZJ S1 80ZJ S1 Fan motor Compressor CNFAN1 on PCB1 WH OR BR BL RD NO Output 280VDC 15VDC 0 6VDC 0 5VDC Resistance 1 154 U Pink V White W Gray...

Page 237: ...236 11 SCM SM 110 EEVB EEVC EEVA EEVD MARKING GREEN BLUE RED WHITE EEV A EEV D 46 WH 46 46 46 M YE OR BL RD Input 12VDC...

Page 238: ...nsor 25 90 Tho R Black 4 6 Tho A Black Tho D Black Black 5 0 5 0 Tho S 5 0 Name Color Resistance k Suction pipe temp sensor Tho S Outdoor air temp sensor Tho A Heat exchanger sensor Tho R Discharge pi...

Page 239: ...0S is ON CNSUB 3 4 0 1VDC When CH is ON CNSUB 5 4 5VDC R S RO SO of SUB PCB 220 240VAC C 2 S 2 C 1 S 1 of SUB PCB 20VDC CN20V CN20V of SUB PCB 20VDC CNTH Sensor Tho R Tho A Tho D U Compressor V Compre...

Page 240: ...e Indoor unit C 220 240VAC Power supply CNC Blue Indoor unit C 0VAC Earth CND Black White Indoor unit D 220 240VAC Power supply CND Yellow Indoor unit D 0VAC Earth CN20S 20S 220 240VAC For 4 way valve...

Page 241: ...EEVE MARKING YELLOW BLACK GREEN BLUE RED WHITE Fan motor EEVA EEVF EEV H 46 WH 46 46 46 M YE OR BL RD Input 12VDC 46 WH 46 46 46 M YE OR BL RD Input 12VDC CNFAN1 on PCB1 RD BL BR OR WH NO Output 280VD...

Page 242: ...V WH U RD 0 25 50 90 Tho R Black 16 4 5 0 1 8 Tho D Black 54 8 5 0 Tho S Black 16 4 5 0 1 8 Tho A Yellow 32 8 10 0 Tho AF Black 5 0 Name Color Resistance k Suction pipe temp thermistor Tho S Outdoor...

Page 243: ...valve CNR1 Crankcase heater 220 240VAC CNA2 280VDC green P white N CNFAN1 fan motor Refer to page 240 CNI1 CNI2 on PCB2 1 2 5VDC 1 3 0 5VDC 1 4 0 5VDC CNS1 CNS2 on SUB PCB 13VDC CNL1 High preassure se...

Page 244: ...C CNI2 CNI1 on PCB1 1 2 5VDC 1 3 0 5VDC 1 4 0 5VDC CNI4 CNI3 on PCB1 1 3 18VDC 2 3 15VDC CNACT1 Active filter module 1 2 15VDC 1 3 0 5VDC 1 4 0 3VDC SUB PCB PCB3 Connector Connected to Normal value Re...

Page 245: ...125 only CNE For indoor unit CND For indoor unit CNC For indoor unit CNB For indoor unit CNA For indoor unit CNDRM TB8 CNTRO 30VAC CNTRI 0 21VDC L IN N IN 220 240VAC SUB PCB PCB5 Connector Connected t...

Page 246: ...geration Systems Headquarters 16 5 Konan 2 chome Minato ku Tokyo 108 8215 Japan http www mhi co jp Copyright MITSUBISHI HEAVY INDUSTRIES LTD Because of our policy of continuous improvement we reserve...

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