Midea Mono 3D Service Manual

Revision A: 1312030001, Content updated.

Model Numbers:

MS11M-09HRFN1-MW0W MS11M-12HRFN1-MV0W MS11M-18HRFN1-MU0W
MS11M-24HRDN1-MT0W

Oasis MONO Split 3D DC Inverter

Air Conditioner

SERVICE MANUAL

Mono 3D

Table of Contents

1. Precaution

2. Part Names And Functions

3. Dimension

4. Refrigerant Cycle Diagram

5. Wiring Diagram

6. Installation Details

7. Operation Characteristics

8. Electronic Function

9. Troubleshooting

10. Exploded View

11. Disassembly Instructions

WARNING

 Installation MUST conform with local building codes or, in the absence of local codes, with the

National Electrical Code NFPA70/ANSI C1-1993 or current edition and Canadian Electrical
Code Part1 CSA C.22.1.

 The information contained in the manual is intended for use by a qualified service technician

familiar with safety procedures and equipped with the proper tools and test instruments

 Installation or repairs made by unqualified persons can result in hazards to you and others.
 Failure to carefully read and follow all instructions in this manual can result in equipment

malfunction, property damage, personal injury and/or death.

 This service is only for service engineer to use.

CONTENTS

1. Precaution ..................................................................................................................................................... 1

1.1 Safety Precaution .......................................................................................................................... 1

1.2 Warning ......................................................................................................................................... 1

2. Part Names And Functions .......................................................................................................................... 4

2.1 Model Names of Indoor/Outdoor units .......................................................................................... 4

2.2 Part names of Indoor/Outdoor units ............................................................................................. 4

2.3 Functions of Indoor/Outdoor units ................................................................................................ 5

3. Dimension ..................................................................................................................................................... 8

3.1 Indoor Unit ..................................................................................................................................... 8

3.2 Outdoor Unit ................................................................................................................................ 10

4. Refrigerant Cycle Diagram ........................................................................................................................ 11

5. Wiring Diagram ...........................................................................................................................................12

5.1 Indoor Unit ................................................................................................................................... 12

5.2 Outdoor Unit ................................................................................................................................ 14

6 Installation Details .......................................................................................................................................19

6.1 Wrench torque sheet for installation ........................................................................................... 19

6.2 Connecting the cables ................................................................................................................ 19

6.3 Pipe length and the elevation ..................................................................................................... 19

6.4 Installation for the first time ......................................................................................................... 20

6.5 Adding the refrigerant after running the system for many years ................................................ 21

6.6 Re-installation while the indoor unit need to be repaired ........................................................... 21

6.7 Re-installation while the outdoor unit need to be repaired ......................................................... 22

7. Operation Characteristics ..........................................................................................................................24

8. Electronic Function ....................................................................................................................................25

8.1 Abbreviation ................................................................................................................................ 25

8.2 Display function ........................................................................................................................... 25

8.3 Main Protection ........................................................................................................................... 26

8.4 Operation Modes and Functions................................................................................................. 28

9. Troubleshooting..........................................................................................................................................36

9.1 Indoor Unit Error Display ............................................................................................................ 37

9.2 Outdoor unit error display ........................................................................................................... 38

9.3 Diagnosis and Solution ............................................................................................................... 41

10. Exploded View ..........................................................................................................................................65

10.1 Indoor unit ................................................................................................................................. 65

10.2 Outdoor unit .............................................................................................................................. 73

11 Disassembly Instructions .........................................................................................................................81

11.1 Indoor unit ................................................................................................................................. 81

11.2 Outdoor unit ............................................................................................................................... 85

1

1. Precaution

1.1 Safety Precaution

 To prevent injury to the user or other

people and property damage, the following
instructions must be followed.

 Incorrect operation due to ignoring

instruction will cause harm or damage.

 Before service the unit, be sure to

read this service manual at first.

1.2 Warning

 Installation

 Do not use a defective or underrated

circuit breaker. Use this appliance on a
dedicated circuit.

There is risk of fire or electric shock.

 For electrical work, contact the dealer,

seller, a qualified electrician, or an
authorized service center.

Do not disassemble or repair the product,
there is risk of fire or electric shock.

 Always ground the product.

There is risk of fire or electric shock.

 Install the panel and the cover of

control box securely.

There is risk of fire of electric shock.

 Always install a dedicated circuit and

breaker.

Improper wiring or installation may cause
electric shock.

 Use the correctly rated breaker of

fuse.

There is risk of fire or electric shock.

 Do not modify or extend the power

cable.

There is risk of fire or electric shock.

 Do not install, remove, or reinstall the

unit by yourself (customer).

There is risk of fire, electric shock, explosion,
or injury.

 Be caution when unpacking and

installing the product.

Sharp edges could cause injury, be especially
careful of the case edges and the fins on the
condenser and evaporator.

 For installation, always contact the

dealer or an authorized service center.

 Do not install the product on a

defective installation stand.

 Be sure the installation area does not

deteriorate with age.

If the base collapses, the air conditioner could
fall with it, causing property damage, product
failure, and personal injury.

 Do not let the air conditioner run for a

long time when the humidity is very high
and a door or a window is left open.

 Take care to ensure that power cable

could not be pulled out or damaged during
operation.

There is risk of fire or electric shock.

 Do not place anything on the power

cable.

There is risk of fire or electric shock.

 Do not plug or unplug the power

supply plug during operation.

There is risk of fire or electric shock.

 Do not touch (operation) the product

with wet hands.

 Do not place a heater or other

appliance near the power cable.

There is risk of fire and electric shock.

 Do not allow water to run into

electrical parts.

It may cause fire, failure of the product, or
electric shock.

 Do not store or use flammable gas or

combustible near the product.

There is risk of fire or failure of product.

 Do not use the product in a tightly

closed space for a long time.

Oxygen deficiency could occur.

 When flammable gas leaks, turn off

the gas and open a window for ventilation
before turn the product on.

 If strange sounds or smoke comes

from product, turn the breaker off or
disconnect the power supply cable.

2

There is risk of electric shock or fire.

 Stop operation and close the window

in storm or hurricane. If possible, remove
the product from the window before the
hurricane arrives.

There is risk of property damage, failure of
product, or electric shock.

 Do not open the inlet grill of the

product during operation. (Do not touch the
electrostatic filter, if the unit is so equipped.)

There is risk of physical injury, electric shock,
or product failure.

 When the product is soaked, contact

an authorized service center.

There is risk of fire or electric shock.

 Be caution that water could not enter

the product.

There is risk of fire, electric shock, or product
damage.

 Ventilate the product from time to

time when operating it together with a stove
etc.

There is risk of fire or electric shock.

 Turn the main power off when

cleaning or maintaining the product.

There is risk of electric shock.

 When the product is not be used for a

long time, disconnect the power supply plug
or turn off the breaker.

There is risk of product damage or failure, or
unintended operation.

 Take care to ensure that nobody

could step on or fall onto the outdoor unit.

This could result in personal injury and
product damage.

 CAUTION

 Always check for gas (refrigerant)

leakage after installation or repair of
product.

Low refrigerant levels may cause failure of
product.

 Install the drain hose to ensure that

water is drained away properly.

A bad connection may cause water leakage.

 Keep level even when installing the

product.

It can avoid vibration of water leakage.

 Do not install the product where the

noise or hot air from the outdoor unit could
damage the neighborhoods.

It may cause a problem for your neighbors.

 Use two or more people to lift and

transport the product.

 Do not install the product where it will

be exposed to sea wind (salt spray) directly.

It may cause corrosion on the product.
Corrosion, particularly on the condenser and
evaporator fins, could cause product
malfunction or inefficient operation.

 Operational

 Do not expose the skin directly to

cool air for long time. (Do not sit in the
draft).

 Do not use the product for special

purposes, such as preserving foods, works
of art etc. It is a consumer air conditioner,
not a precision refrigerant system.

There is risk of damage or loss of property.

 Do not block the inlet or outlet of air

flow.

 Use a soft cloth to clean. Do not use

harsh detergents, solvents, etc.

There is risk of fire, electric shock, or damage
to the plastic parts of the product.

 Do not touch the metal parts of the

product when removing the air filter. They
are very sharp.

 Do not step on or put anything on the

product. (outdoor units)

 Always insert the filter securely.

Clean the filter every two weeks or more
often if necessary.

A dirty filter reduces the efficiency of the air
conditioner and could cause product
malfunction or damage.

 Do not insert hands or other objects

through air inlet or outlet while the product
is operated.

 Do not drink the water drained from

the product.

3

 Use a firm stool or ladder when

cleaning or maintaining the product.

Be careful and avoid personal injury.

 Replace the all batteries in the remote

control with new ones of the same type. Do
not mix old and new batteries or different
types of batteries.

There is risk of fire or explosion.

 Do not recharge or disassemble the

batteries. Do not dispose of batteries in a
fire.

They may burn of explode.

 If the liquid from the batteries gets

onto your skin or clothes, wash it well with
clean water. Do not use the remote of the
batteries have leaked.

4

2. Part Names And Functions

2.1 Model Names of Indoor/Outdoor units

Series

Capacity

Indoor units

Outdoor units

Inverter

9k

MS11M-09HRFN1-MW0W

MOC-09HFN1-MW0W

12k

MS11M-12HRFN1-MV0W

MOC-12HFN1-MV0W

18k

MS11M-18HRFN1-MU0W

MOF-18HFN1-MU0W

24k

MS11M-24HRDN1-MT0W

MOG-24HFN1-MT0W

2.2 Part names of Indoor/Outdoor units

5

2.3 Functions of Indoor/Outdoor units

Cold catalyst filter

Plasma(O)

Silver Ico Filter(O)

Vitamin C Filter(O)

3M HAM Filter(O)

Bio Filter(O)

Golden Fin(O)

Ionizer(O)

Compressor Crankcase Heater

Self Clean(O)

1W Standby

Louver Position Memory Function

Refrigerant Leakage Detect

Self-diag. Function

Hydrophilic Aluminum Fin

Anti-rust Cabinet

Valve Protection Cover

PTC Heating Belt(O)

Horizontal &Vertical Swing Function(O)

Filter

Follow Me(O)

Silent mode(O)

O: optional function

6

 Cold Catalyst Filter:
Eliminate formaldehyde and other volatile organic compounds as well as harmful gases and odors.
 Ionizer:
Release negative ions, eliminate odor, dust, smoke and pollen particles to give you fresh and healthy air.
 Plasma:
Generate a high voltage electrostatic zone, absorb and eliminate dust, smoke and pollen particles. It also
deodorizes air as removing tobacco odours, garbage smells etc.
 Silver Ion Filter:
Sterilize bacteria effectively by decomposing cell wall of bacteria.
 Vitamin C Filter:
Release Vitamin C which can eliminate active oxygen to beautify the skin.
 3M HAM Filter:
Open-hole-structure with charged electrostatic effectively capture dust and particles, ensure maximum air
flow and minimum pressure drop.
 Bio Filter(O):
Bio filter consists of a specialized biological enzyme and Eco filter. The Eco filter catches very small
airborne dust particles and bacteria, fungi and microbes. Biological enzyme kills bacteria by dissolving their
cell wall thus eliminating the problem of re-pollution.
 Golden Fin:
The Golden hydrophilic condenser can improve the heating efficiency by accelerating the defrosting
process. The unique anticorrosive golden coating on the condenser can withstand the salty air, rain and
other corrosive elements.
 Self Clean:
When this function is activated, firstly the indoor unit operates as Fan-only mode with low fan speed, during
this period the condensed water will take some dust on evaporator fins away. After that the unit turns to
heating operation with low fan speed which dries the inside of indoor unit. Finally it turns to fan-only mode
and blows away the wet air. The whole process cleans the internal side of indoor unit and prevents the
breeding of bacteria.
 Follow me:
With this technology, a temperature sensor is built in the remote control when you stay close to the remote
control, the unit will automatically change the operation mode to supply comfortable temperature just like
the air conditioner is following you.
 Silent mode
Indoor fan will run at super breeze speed and indoor unit noise level can be extremly low to 20dB(A) when
the unit enters silent mode operation.
 Horizontal&Vertical Swing Function
The unit has auto horizontal swing and auto vertical swing function, which supplies more even and
comfortable air flow.
 Louver position memory function:
When starting the unit again after shutting down, its louver will restore to the angle originally set by the user
 Refrigerant leakage detect:
The refrigerant leakage detect function can better prevent the compressor being damaged by refrigerant
leakage or compressor overload.
 Self-diag.Function:
Monitoring some abnormal operations or parts failures, microcomputer of the air conditioner will switch off
and protect the system automatically.Meanwhile, the error or protection code will be displayed on the indoor

7

unit.
 PTC heating belt:
With a PTC heating belt fitted on the base plate of the outdoor unit, the rain, snow or defrosted water
accumulating on the base plate is avoided.
 Compressor crankcase heater:
The oil dissolves easily in refrigerant, especially in low temperature condition. The crankcase heating belt
can heat the bottom of the compressor to avoid pumping out too much oil with the refrigerant, which helps
to protect the compressor.

8

3. Dimension

3.1 Indoor Unit

W D

Model

L R H

Dimension of installation hole

MS11M-09HRFN1-MW0W

140mm

(5.5in)

110mm

(4.3in)

45mm
(1.8in)

Φ65mm(2.56in)

MS11M-12HRFN1-MV0W

Model

W D H

MS11M-09HRFN1-MW0W

835mm
(32.9in)

198mm

(7.8in)

280mm
(11.0in)

MS11M-12HRFN1-MV0W

MS11M-18HRFN1-MU0W

990mm
(39.0in)

218mm

(8.6in)

315mm
(12.4in)

MS11M-24HRDN1-MT0W

1186mm

(46.7in)

258mm
(10.2in)

340mm
(13.4in)

9

Model

L R H

Dimension of installation hole

MS11M-18HRFN1-MU0W

260mm
(10.2in)

135mm

(5.3in)

45mm
(1.8in)

Φ65mm(2.56in)

Model

L R H

Dimension of installation hole

MS11M-24HRDN1-MT0W

275mm
(10.8in)

275mm
(10.8in)

45mm
(1.8in)

Φ65mm(2.56in)

10

3.2 Outdoor Unit

More than 60cm(23.6in)

More than 70cm(27.6in)

More than 30cm(11.8in)

More than 60cm(23.6in)
(Service space)

Fence or

obstacles

More than 30cm(11.8in)

Note: The above drawing is only for reference. The appearance of your units may be different.

Model

W D H

W1 A B

MOC-09HFN1-MW0W

760mm
(29.9in)

285mm
(11.2in)

590mm

(23.2in)

823mm
(32.4in)

530mm
(20.9in)

290mm
(11.4in)

MOC-12HFN1-MV0W

MOF-18HFN1-MU0W

845mm
(33.3in)

320mm
(12.6in)

700mm
(27.6in)

908mm
(35.7in)

560mm
(22.0in)

335mm
(13.2in)

MOG-24HFN1-MT0W

900mm
(36.7in)

315mm
(12.9in)

860mm
(35.1in)

980mm

(40in)

590mm
(24.1in)

333mm

(13.6in)

11

4. Refrigerant Cycle Diagram

LIQUID SIDE

GAS SIDE

HEAT
EXCHANGE
(EVAPORATOR)

HEAT
EXCHANGE
(CONDENSER)

Compressor

2-WAY VALVE

3-WAY VALVE

4-WAY VALVE

COOLING
HEATING

T2 Evaporator
temp. sensor

T1 Room temp.
sensor

T3 Condenser
temp. sensor

T5 Discharge
temp. sensor

T4 Ambient
temp. sensor

INDOOR OUTDOOR

Electronic
expansion valve

CAPILIARY TUBE

Accumulator

CAPILIARY TUBE

12

5. Wiring Diagram

5.1 Indoor Unit

MS11M-09HRFN1-MW0W, MS11M-12HRFN1-MV0W, MS11M-18HRFN1-MU0W

13

MS11M-24HRDN1-MT0W

14

5.2 Outdoor Unit

MOC-09HFN1-MW0W, MOC-12HFN1-MV0W

15

MOF-18HFN1-MU0W

16

MOG-24HFN1-MT0W

MOC-09HFN1-MW0W, MOC-12HFN1-MV0W

17

MOF-18HFN1-MU0W

18

MOG-24HFN1-MT0W

19

6 Installation Details

6.1 Wrench torque sheet for
installation

Outside diameter

Torque

Additional tightening

torque

Ф6.35mm

1/4in

1500N.cm(153kgf.cm)

1600N.cm(163kgf.cm)

Ф9.52mm

3/8in

2500N.cm(255kgf.cm)

2600N.cm(265kgf.cm)

Ф12.7mm

1/2in

3500N.cm(357kgf.cm)

3600N.cm(367kgf.cm)

Ф15.9mm

5/8in

4500N.cm(459kgf.cm)

4700N.cm(479kgf.cm)

Ф19mm

3/4in

6500N.cm(663kgf.cm)

6700N.cm(683kgf.cm)

6.2 Connecting the cables

The power cord should be selected according
to the following specifications sheet.

Appliance Amps

AWG Wire Size

10

18

13

16

18

14

25

12

30

10

The cable size and the current of the fuse or
switch are determined by the maximum
current indicated on the nameplate which
located on the side panel of the unit. Please
refer to the nameplate before selecting the
cable, fuse and switch.

6.3 Pipe length and the elevation

Models

Pipe size

Gas

Liquid

MS11M-09HRFN1-MW0W+MOC-09HFN1-MW0W

3/8in

(Ф9.52mm)

1/4in

(Ф6.35mm)

MS11M-12HRFN1-MV0W+MOC-12HFN1-MV0W

1/2in

(Ф12.7mm)

1/4in

(Ф6.35mm)

MS11M-18HRFN1-MU0W+MOF-18HFN1-MU0W

1/2in

(Ф12.7mm)

1/4in

(Ф6.35mm)

MS11M-24HRDN1-MT0W+MOG-24HFN1-MT0W

5/8in

(Ф15.9mm)

3/8in

(Ф9.52mm)

Models

Standard

length

Max.

Elevation

Max.

Length

A

Additional

refrigerant

MS11M-09HRFN1-MW0W+
MOC-09HFN1-MW0W

7.5m

(24.6ft)

10m

(32.8ft)

25m

(82.0ft)

15g/m

(0.16oz/ft)

MS11M-12HRFN1-MV0W+M
OC-12HFN1-MV0W

7.5m

(24.6ft)

10m

(32.8ft)

25m

(82.0ft)

15g/m

(0.16oz/ft)

MS11M-18HRFN1-MU0W+M
OF-18HFN1-MU0W

7.5m

(24.6ft)

20m

(65.6ft)

30m

(98.4ft)

15g/m

(0.16oz/ft)

MS11M-24HRDN1-MT0W+M
OG-24HFN1-MT0W

7.5m

(24.6ft)

25m

(82.0ft)

50m

(164ft)

30g/m

(0.32oz/ft)

20

6.4 Installation for the first time

Air and moisture in the refrigerant system have
undesirable effects as below:

● Pressure in the system rises.

● Operating current rises.

● Cooling or heating efficiency drops.

● Moisture in the refrigerant circuit may

freeze and block capillary tubing.

● Water may lead to corrosion of parts in the
refrigerant system.

Therefore, the indoor units and the pipes
between indoor and outdoor units must be leak
tested and evacuated to remove gas and
moisture from the system.

Gas leak check (Soap water method):

Apply soap water or a liquid neutral
detergent on the indoor unit connections or
outdoor unit connections by a soft brush to
check for leakage of the connecting points of
the piping. If bubbles come out, the pipes have
leakage.

1. Air purging with vacuum pump

1) Completely tighten the flare nuts of the

indoor and outdoor units, confirm that both
the 2-way and 3-way valves are set to the
closed position.

2) Connect the charge hose with the push pin

of handle lo to the 3-way valves gas service
port..

3) Connect the charge hose of handle hi

connection to the vacuum pump.

4) Fully open the handle Lo of the manifold

valve.

5) Operate the vacuum pump to evacuate.

6) Make evacuation for 30 minutes and check
whether the compound meter indicates

-0.1Mpa(14.5Psi). If the meter does not

indicate -0.1Mpa(14.5Psi) after pumping 30
minutes, it should be pumped 20 minutes

more. If the pressure can’t achieve

-0.1Mpa(14.5Psi) after pumping 50 minutes,

please check if there are some leakage
points. Fully close the handle Lo valve of the
manifold valve and stop the operation of the
vacuum pump. Confirm that the gauge
needle does not move (approximately 5
minutes after turning off the vacuum pump).

7) Turn the flare nut of the 3-way valves about
45° counterclockwise for 6 or 7seconds
after the gas coming out, then tighten the
flare nut again. Make sure the pressure
display in the pressure indicator is a little
higher than the atmosphere pressure. Then
remove the charge hose from the 3 way
valve.

8) Fully open the 2 way valve and 3 way valve

and securely tighten the cap of the 3 way
valve.

2. Air purging by refrigerant

Procedure:

1). Confirm that both the 2-way and 3-way

valves are set to the closed position.

2). Connect the charge set and a charging

cylinder to the service port of the 3-way valve.

3). Air purging.

Open the valves on the charging cylinder and
the charge set. Purge the air by loosening the
flare nut on the 2-way valve approximately 45’
for 3 seconds then closing it for 1 minute; repeat
3 times.

21

After purging the air, use a torque wrench to
tighten the flare nut on the 2-way valve.

4). Check the gas leakage.
Check the flare connections for gas leakage.

5). Discharge the refrigerant.
Close the valve on the charging cylinder and
discharge the refrigerant by loosening the flare
nut on the 2-way valve approximately 45’ until
the gauge indicates 0.3Mpa(43.5Psi) to 0.5

Mpa(72.5Psi).

6). Disconnect the charge set and the charging
cylinder, and set the 2-way and 3-way valves to
the open position.
Be sure to use a hexagonal wrench to operate
the valve stems.

7). Mount the valve stems nuts and the service
port cap.
Be sure to use a torque wrench to tighten the
service port cap to a torque 18N·m.
Be sure to check the gas leakage.

6.5 Adding the refrigerant after running
the system for many years

Procedure

1). Connect the charge hose to the 3-way
service port, open the 2-way valve and the
3-way valve.
Connect the charge hose to the valve at the
bottom of the cylinder. If the refrigerant is
R410A, make the cylinder bottom up to ensure
liquid charge.

2). Purge the air from the charge hose.
Open the valve at the bottom of the cylinder
and press the check valve on the charge set to
purge the air (be careful of the liquid
refrigerant).

3) Put the charging cylinder onto the electronic

scale and record the weight.

4) Operate the air conditioner at the cooling

mode.

5) Open the valves (Low side) on the charge set

and charge the system with liquid refrigerant.

6).When the electronic scale displays the

proper weight (refer to the gauge and the
pressure of the low side), disconnect the charge
hose from the 3-way valve’s service port
immediately and turn off the air conditioner
before disconnecting the hose.

7). Mount the valve stem caps and the service

port
Use torque wrench to tighten the service port
cap to a torque of 18N.m.
Be sure to check for gas leakage.

6.6 Re-installation while the indoor unit

need to be repaired

1. Collecting the refrigerant into the outdoor

unit

Procedure

1). Confirm that both the 2-way and 3-way

valves are set to the opened position
Remove the valve stem caps and confirm that
the valve stems are in the opened position.
Be sure to use a hexagonal wrench to operate
the valve stems.

2). Connect the charge hose with the push pin

of handle lo to the 3-way valves gas service
port.

3). Air purging of the charge hose.

Open the handle Lo valve of the manifold valve
slightly to purge air from the charge hose for 5
seconds and then close it quickly.

22

4). Set the 2-way valve to the close position.

5). Operate the air conditioner at the cooling
cycle and stop it when the gauge indicates

0.1Mpa(14.5Psi).

6). Set the 3-way valve to the closed position
immediately
Do this quickly so that the gauge ends up
indicating 0.3Mpa(43.5Psi) to 0.5 Mpa(72.5Psi).
Disconnect the charge set, and tighten the
2-way and 3-way valve’s stem nuts.
Use a torque wrench to tighten the 3-way valves
service port cap to a torque of 18N.m.
Be sure to check for gas leakage.

2. Air purging by the refrigerant

Procedure:

1). Confirm that both the 2-way and 3-way
valves are set to the closed position.

2). Connect the charge set and a charging
cylinder to the service port of the 3-way valve
Leave the valve on the charging cylinder closed.

3). Air purging.
Open the valves on the charging cylinder and
the charge set. Purge the air by loosening the
flare nut on the 2-way valve approximately 45’
for 3 seconds then closing it for 1 minute; repeat
3 times.
After purging the air, use a torque wrench to
tighten the flare nut on the 2-way valve.

4). Check the gas leakage
Check the flare connections for gas leakage.

5). Discharge the refrigerant.
Close the valve on the charging cylinder and
discharge the refrigerant by loosening the flare
nut on the 2-way valve approximately 45’ until
the gauge indicates 0.3Mpa(43.5Psi) to 0.5

Mpa(72.5Psi).

6). Disconnect the charge set and the charging

cylinder, and set the 2-way and 3-way valves to
the open position
Be sure to use a hexagonal wrench to operate
the valve stems.

7). Mount the valve stems nuts and the service

port cap
Be sure to use a torque wrench to tighten the
service port cap to a torque 18N.m.
Be sure to check the gas leakage.

6.7 Re-installation while the outdoor

unit need to be repaired

1. Evacuation for the whole system

Procedure:

1). Confirm that both the 2-way and 3-way

valves are set to the opened position.

2). Connect the vacuum pump to 3-way valve’s

service port.

3). Evacuation for approximately one hour.

Confirm that the compound meter indicates

-0.1Mpa(14.5Psi).

4). Close the valve (Low side) on the charge set,

turn off the vacuum pump, and confirm that the
gauge needle does not move (approximately 5
minutes after turning off the vacuum pump).

5). Disconnect the charge hose from the

vacuum pump.

23

2. Refrigerant charging

Procedure:

1). Connect the charge hose to the charging
cylinder, open the 2-way valve and the 3-way
valve
Connect the charge hose which you
disconnected from the vacuum pump to the
valve at the bottom of the cylinder. If the
refrigerant is R410A, make the cylinder bottom
up to ensure liquid charge.

2). Purge the air from the charge hose
Open the valve at the bottom of the cylinder
and press the check valve on the charge set to
purge the air (be careful of the liquid
refrigerant).

3) Put the charging cylinder onto the electronic
scale and record the weight.

4). Open the valves (Low side) on the charge
set and charge the system with liquid refrigerant
If the system cannot be charge with the
specified amount of refrigerant, or can be
charged with a little at a time (approximately
150g each time) , operating the air conditioner
in the cooling cycle; however, one time is not
sufficient, wait approximately 1 minute and then
repeat the procedure.

5).When the electronic scale displays the
proper weight, disconnect the charge hose from
the 3-way valve’s service port immediately
If the system has been charged with liquid
refrigerant while operating the air conditioner,
turn off the air conditioner before disconnecting
the hose.

6). Mounted the valve stem caps and the
service port. Use torque wrench to tighten the
service port cap to a torque of 18N.m. Be sure

to check for gas leakage.

24

7. Operation Characteristics

Temperature

Mode

Cooling operation

Heating operation

Drying operation

Room temperature

≥17°C
(62°F)

≤30°C

(86°F)

＞10°C

(50°F)

Outdoor temperature

0°C～50°C

(32°F～122°F)

-15°C～30°C
(5°F～86°F)

0°C～50°C

(32°F～122°F)

-15°C～50°C
(5°F～122°F)

(For the models with

low temperature cooling system)

ΔT(℉) =

9ΔT(℃)

5

CAUTION:

1. If the air conditioner is used beyond the above conditions, certain safety protection features may

come into operation and cause the unit to operate abnormally.

2. The room relative humidity should be less than 80%. If the air conditioner operates beyond this
figure, the surface of the air conditioner may attract condensation. Please set the vertical air flow louver to
its maximum angle (vertically to the floor), and set HIGH fan mode.

3. The optimum performance will be achieved during this operating temperature zone.

25

8. Electronic Function

8.1 Abbreviation

T1: Indoor room temperature
T2: Coil temperature of evaporator
T3: Coil temperature of condenser
T4: Outdoor ambient temperature
T5: Compressor discharge temperature

8.2 Display function

8.2.1 Icon explanation on indoor display board.

ION indication lamp(optional function)：This lamp illuminates when Clean Air
feature is activated.

DEFROST indication lamp(For cooling & heating models only): Lights up
when the air conditioner starts defrosting automatically or when the warm air
control feature is activated in heating operation.

OPERATION indication lamp：This lamp illuminates when the air conditioner is in
operation.

TIMER indication lamp：Lights up during Timer operation.

Temperature indicator：Displays the temperature settings when the air conditioner

is operational. Displays the malfunction code.

26

8.3 Main Protection

8.3.1 Three minutes delay at restart for compressor

1 minute delay for the 1st time stand-up and 3 minutes delay for others.

8.3.2 Temperature protection of compressor top

The unit will stop working when the compressor top temp. protector cut off, and will restart after the
compressor top temp. protector restart.

8.3.3 Temperature protection of compressor discharge

When the compressor discharge temp. is getting higher, the running frequency will be limited as below
rules:

---Compressor discharge temp. T5>115°C(239°F) for 5s, compressor stops.

---108°C (226°F)<T5<115°C(239°F), decrease the frequency to the lower level every 3 minutes.

---90°C(194°F)<T5<105°C(221°F), keep running at the current frequency.

----T5<90°C(194°F), no limit for frequency.

8.3.4 Fan speed is out of control

When Indoor fan speed keeps too low (300RPM) for certain time, the unit will stop and the LED will
display the failure

8.3.5 Inverter module protection

The Inverter module has a protection function about current, voltage and temperature. If these
protections happen, the corresponding code will display on indoor unit and the unit will stop working.

8.3.6 Indoor fan delayed open function

When the unit starts up, the louver will be active immediately and the indoor fan will open 10s later.
If the unit runs in heating mode, the indoor fan will be also controlled by anti-cold wind function.

8.3.7 Compressor preheating functions

Preheating permitting condition:
If T4(outdoor ambient temperature)＜3°C(37.4°F) and the machine connects to power supply newly or
if T4＜3°C(37.4°F) and compressor has stopped for over 3 hours, the compressor heating cable will
work.
Preheating mode:
A weak current flow through the coil of compressor from the wiring terminal of the compressor, then the
compressor is heated without operation.
Preheating release condition:
If T4＞5°C(41°F) or the compressor starts running, the preheating function will stop.

8.3.8 Zero crossing detection error protection

If AC detects time interval is not correct for continuous 240s, the unit will stop and the LED will display
the failure. The correct zero crossing signal time interval should be between 6-13ms.

8.3.9 Condenser temperature protection

---55°C(131°F)<T3<60°C(140°F), the compressor frequency will decrease to the lower level until to F1
and then runs at F1.If T3<54°C(129.2°F), the compressor will keep running at the current frequency.

---T3<52°C(125.6°F), the compressor will not limit the frequency and resume to the former frequency.

---T3>60°C(140°F) for 5 seconds, the compressor will stop until T3<52°C(125.6°F).

8.3.10 Evaporator temperature protection

---T2<0°C(32°F), the compressor will stop and restart when T2≧5°C(41°F).

---0°C(32°F)≦T2<4°C(39.2°F), the compressor frequency will be limited and decreased to the lower
level

---4°C(39.2°F)≤T2≤7°C(44.6°F), the compressor will keep the current frequency.

27

---T2>7°C(44.6°F), the compressor frequency will not be limited.

28

8.4 Operation Modes and Functions

8.4.1 Fan mode

(1) Outdoor fan and compressor stop.

(2) Temperature setting function is disabled,
and no setting temperature is displayed.
(3) Indoor fan can be set to
high/med/low/auto.
(4) The louver operates same as in cooling
mode.
(5) Auto fan:
For MS11M-09HRFN1-MW0W,
MS11M-12HRFN1-MV0W,
MS11M-18HRFN1-MU0W models:

a

b

c

d

6.0¡ãC(42.8¡ãF)

T1-24¡ãC(75.2¡ãF)

e

H
(H-L)*0.75+L
(H-L)*0.5+L
(H-L)*0.25+L
L

5.0¡ãC(41.0¡ãF)

4.0¡ãC(39.2¡ãF)

2.5¡ãC(36.5¡ãF)

1.0¡ãC(33.8¡ãF)

For MS11M-24HRDN1-MT0W model:

27.5¡ãC(81.5¡ãF)

T1

27.0¡ãC(80.6¡ãF)

High

Low

25.0¡ãC(77.0¡ãF)

Medium

25.5¡ãC(77.9¡ãF)

8.4.2 Cooling Mode

8.4.2.1 Compressor running rules

The maximum operation frequency of
compressor after starting submits to following
rule.

45¡ãC(113¡ãF)

40¡ãC(104¡ãF)

38¡ãC(100.4¡ãF)

31.5¡ãC(88.7¡ãF)

29.5¡ãC(85.1¡ãF)

22.0¡ãC(71.6¡ãF)

20.0¡ãC(68.0¡ãF)

Fmax=F4

Fmax=F7

Fmax=F8

Fmax=F6

Fmax=F3

T4

43¡ãC(109.4¡ãF)

Fmax: The maximum operation frequency of
compressor.
F1~F8: The detailed value of the compressor
operation frequency.
If users switch on AC by remote controller, the
compressor will run at the Fmax frequency for 7
minutes according to the outdoor ambient temp.
During the 7 minutes, the frequency limitation is
active. 7 minutes later, the compressor running
frequency will be controlled as below:

3.5¡ãC(38.3¡ãF)

-0.5¡ãC(31.1¡ãF)

T1-Ts

-1.0¡ãC(30.2¡ãF)

A

B

C

D

E

F

G

H

3.0¡ãC(37.4¡ãF)

2.5¡ãC(36.5¡ãF)

2.0¡ãC(35.6¡ãF)

1.5¡ãC(34.7¡ãF)

1.0¡ãC(33.8¡ãF)

0.5¡ãC(32.9¡ãF)

While the zones of A,B,C... are corresponding
to different compressor running frequency.

Note:

29

When T1-Ts keeps in the same temp. zone for
3 minutes, the compressor will run as the below
rules:
A~E: Increase the frequency to the higher level
until to F8.
F: Keep the current frequency.
G: Decrease the frequency to the lower level
until to F1.
H: Run at F1 for 1h.(if T1-Ts<-2°C(28.4°F), the
compressor will stop)
Meanwhile, the compressor running frequency
is limited by the current.

I3COOL

I2COOL

Off

Decrease

Hold

Resume

I1COOL

I3COOL, I2COOL,I1COOL mean different
running current value.
Off: Compressor stops.
Decrease: Decrease the running frequency to
the lower level.
Hold: Keep the current frequency.
Resume: No limitation for frequency.

Note:

When AC is in “hold” zone for 3 minutes, the

compressor frequency will rise to the higher
level.(frequency will increase twice at most)

8.4.2.2 Outdoor fan running rules

T4

28¡ãC(82.4¡ãF)

H

M

L

26¡ãC(78.8¡ãF)

22¡ãC(71.6¡ãF)

20¡ãC(68.0¡ãF)

8.4.2.3 Indoor fan running rules

In cooling mode, indoor fan runs all the time
and the speed can be selected as high,
medium, low, auto and silent mode. When the
compressor is running, the indoor fan is
controlled as below:

For MS11M-09HRFN1-MW0W,
MS11M-12HRFN1-MV0W,
MS11M-18HRFN1-MU0W models:

Auto fan running rules:

For MS11M-09HRFN1-MW0W,
MS11M-12HRFN1-MV0W,
MS11M-18HRFN1-MU0W models:

a

b

c

d

6.0¡ãC(42.8¡ãF)

T1-Ts

e

H
(H-L)*0.75+L
(H-L)*0.5+L
(H-L)*0.25+L
L

5.0¡ãC(41.0¡ãF)

4.0¡ãC(39.2¡ãF)

2.5¡ãC(36.5¡ãF)

1.0¡ãC(33.8¡ãF)

30

For MS11M-24HRDN1-MT0W model:

4¡ãC(39.2¡ãF)

T1-Ts

High

Low

Medium

3¡ãC(37.4¡ãF)

1.5¡ãC(34.7¡ãF)

1.0¡ãC(33.8¡ãF)

8.4.3 Heating Mode

8.4.3.1 Compressor running rules

The maximum operation frequency of the
compressor after starting submits to the
following rule.

Fmax=F3

Fmax=F5

Fmax=F7

Fmax=F9
Fmax=F10

Fmax=F8

Fmax=F6

Fmax=F2

34¡ãC(93.2¡ãF)

T4

Off

Fmax=F4

33¡ãC(91.4¡ãF)
28¡ãC(82.4¡ãF)

27¡ãC(80.6¡ãF)
25¡ãC(77.0¡ãF)

24¡ãC(75.2¡ãF)
22¡ãC(71.6¡ãF)

21¡ãC(69.8¡ãF)

19¡ãC(66.2¡ãF)

18¡ãC(64.4¡ãF)
17¡ãC(62.6¡ãF)

16¡ãC(60.8¡ãF)
15¡ãC(59.0¡ãF)

14¡ãC(57.2¡ãF)
12¡ãC(53.6¡ãF)

11¡ãC(51.8¡ãF)

6.0¡ãC(42.8¡ãF)

5.0¡ãC(41.0¡ãF)

Fmax: The maximum operation frequency of
compressor.
F1~F8: The detailed value of the compressor
operation frequency.
If users switch on AC by remote controller, the
compressor will run at the Fmax frequency for 7
minutes according to outdoor ambient temp.
During the 7 minutes, the frequency limitation is
active.
7 minutes later, the compressor running
frequency will be controlled as below:

5.0¡ãC(41¡ãF)

4.5¡ãC(40.1¡ãF)

T1-Ts-¦¤T

H

G

F

E

D

C

B

A

3.5¡ãC(38.3¡ãF)

3.0¡ãC(37.4¡ãF)

2.5¡ãC(36.5¡ãF)

2.0¡ãC(35.6¡ãF)

1.5¡ãC(34.7¡ãF)

1.0¡ãC(33.8¡ãF)

0.5¡ãC(32.9¡ãF)

While the zones of A,B,C... are corresponding
to different compressor running frequency.
ΔT=0°C(32°F) as default.

Note:

When T1-Ts keeps in the same temp. zone for
3 minutes, the compressor will run as the below
rules:
A~E: Increase the frequency to the higher level
until to F10.
F: Keep the current frequency.
G: Decrease the frequency to the lower level
until to F1.
H: Run at F1 for 1h.(if T1-Ts-ΔT >6°C(42.8°F),
the compressor will stop)
Meanwhile, the compressor running frequency
is limited by the current.

I3HEAT

I2HEAT

I1HEAT

Off

Decrease

Hold

Resume

I3HEAT, I2HEAT,I1HEAT mean different
running current value.
Off: Compressor stops.
Decrease: Decrease the running frequency to
the lower level.
Hold: Keep the current frequency.

31

Resume: No limitation for frequency.

Note:

When AC is in “hold” zone for 3 minutes, the

compressor frequency will rise to the higher
level. (The frequency will increase twice at
most)

8.4.3.2 Outdoor fan running rules

T4

17¡ãC(62.6¡ãF)

L

M

H

15¡ãC(59.0¡ãF)
12¡ãC(53.6¡ãF)

10¡ãC(50.0¡ãF)

8.4.3.3 Indoor fan running rules
Indoor fan speed can be set as high, medium,
low, silent mode or auto grade. During all the
fan speeds, the anti-cold-wind function is
preferential. If the compressor stops caused by
the room temperature rising, the indoor fan will
run at super breeze. When the compressor is
running, the indoor fan is controlled as below:

The anti-cold wind function is as below:
For MS11M-09HRFN1-MW0W,

MS11M-12HRFN1-MV0W,
MS11M-18HRFN1-MU0W models:

TEL8

TEL7
TEL6

TEL5

T2
¡ãC

TEL4

Setting

Low

Breeze

Off

TEL3

Medium

TEL2

TEL0

Super
Breeze

TEL1

For MS11M-24HRDN1-MT0W model:

TEL8

TEL7

TEL6

TEL5

T2¡ãC

TEL4

Setting

Low

Breeze

Off

TEL3

Medium

TEL2

TEL0

Auto fan action in heating mode.

For MS11M-09HRFN1-MW0W,
MS11M-12HRFN1-MV0W,
MS11M-18HRFN1-MU0W models:

0.0¡ãC(32¡ãF)

T1-Ts+¦ ¤T

L
(H+-L)*0.2+L
(H+-L)*0.4+L

(H+-L)*0.6+L

H+

(H+-L)*0.8+L

-1¡ãC(30.2¡ãF)

-2¡ãC(28.4¡ãF)

-3¡ãC(26.6¡ãF)

-4¡ãC(24.8¡ãF)

-5¡ãC(23.0¡ãF)

-6¡ãC(21.2¡ãF)

-6.5¡ãC(20.3¡ãF)

32

For MS11M-24HRDN1-MT0W model:

2.5¡ãC(36.5¡ãF)

T1-Ts

High

Low

Medium

2.0¡ãC(35.6¡ãF)

1.5¡ãC(34.7¡ãF)

1.0¡ãC(33.8¡ãF)

8.4.3.4 Defrosting mode
Condition of defrosting:

----T4＞0°C(32°F),
When the units are running, if the following two
items are satisfied, the units start defrosting:
The units run with T3＜3°C(37.4°F), for 40
minutes and T3 keeps lower than TCDI°C for
more than 3 minutes.
The units run with T3＜3°C(37.4°F) for 80
minutes and T3 keeps lower than
TCDI+2°C(35.6°F) for more than 3 minutes.

----T4＜0°C(32°F),
If the 1st condition and 2nd condition items are
satisfied, then the program judges if T2 has
decreased more than 5°C(41°F).When T2 has
decreased more than 5°C(41°F), enter the
defrosting mode.

----No matter what value T4 is, if the machine
runs with T3＜3°C(37.4°F) for more than 120
minutes and T3 keeps lower than
TCDI+4°C(39.2°F) for more than 3 minutes, the
machine will enter defrosting mode no matter if
T2 drops more than 5°C(41°F) or not.

Condition of ending defrosting:

If any one of the following items is satisfied, the
defrosting will finish and the machine will turn to
normal heating mode.

----T3 rises to be higher than TCDE1°C.

----T3 keeps to be higher than TCDE2°C for 80
seconds.

----The machine has run for 10 minutes in
defrosting mode.
Defrosting action：

For 9k,12k models:

Compressor

on
off

on

on

on

off

off

off

4-way valve

Outdoor fan

Indoor fan

Indoor fan breeze(10s)

xx

10s

no longer than 10m

30s

FrequencyF8

10s

Frequency F2

xx=60s.

For 18k,24k models:

Compressor

on
off

on

on

on

off

off

off

4-way valve

Outdoor fan

Indoor fan

Indoor fan breeze(10s)

xx

no longer than 10m

Frequency F8

30s

10s

10s

Frequency F2

XX=90.

8.4.3.5 Evaporator coil temperature
protection

----T2> TEH2 °C, the compressor running
frequency decreases to the lower level and
runs for 20s.
When the frequency decreases to F2 and the
T2 is still over TEH2 °C for 3 minutes, the
compressor will stop.

----T2<48°C(118.4°F) or T2 stays in
48°C(118.4°F)~TEH2 °C for 6 minutes, the

33

frequency will not be limited by T2.

----T2>60°C(140°F), the compressor will stop
and restart when T2<48°C(118.4°F).

8.4.4 Auto-mode

This mode can be chosen with remote
controller and the setting temperature can be
changed between 17°C(62.6°F)~30°C(86°F).
In auto mode, the machine will choose cooling,
heating or fan-only mode according to ΔT

(ΔT =T1-Ts).

ΔT=T1-Ts

Running mode

ΔT＞1°C(33.8°F)

Cooling

-1°C(30.2°F)<ΔT≤1°C(33.8°F)

Fan-only

ΔT≤-1°C(30.2°F)

Heating

Indoor fan will run at auto fan of the relevant
mode.
The louver operates same as in relevant mode.
If the machine switches mode between heating
and cooling, the compressor will keep stopping
for 15 minutes and then choose mode
according to T1-Ts.
If the setting temperature is modified, the
machine will choose running function again.

8.4.5 Drying mode

8.4.5.1 Indoor fan speed is fixed at breeze and

can’t be changed. The louver angle is the same

as in cooling mode.

8.4.5.2 Compressor running rules

T1-Ts

F3

F2

F1

F1

2.5¡ãC(36.5¡ãF)

2.0¡ãC(35.6¡ãF)

1.5¡ãC(34.7¡ãF)

1.0¡ãC(33.8¡ãF)

0.5¡ãC(32.9¡ãF)

0.0¡ãC(32.0¡ãF)

8.4.5.3 Low indoor room temperature protection
In drying mode, if room temperature is lower
than 10°C(50°F), the compressor will stop and

not resume until room temperature exceeds
12°C(53.6°F).

8.4.5.4 Evaporator anti-freezing protection,
condenser high temperature protection and
outdoor unit frequency limit are active and the
same as that in cooling mode.

8.4.5.5 The outdoor fan operates the same as
in cooling mode.

8.4.6 Forced operation function

8.4.6.1 Enter forced operation function:
When the machine is off, pressing the touch
button will carry the machine to forced auto
mode. If pressing the button once again within
5 seconds, the machine will turn into forced
cooling mode.
In forced auto, forced cooling or any other
operation mode, pressing touch button will turn
off the machine.

8.4.6.2 In forced operation mode, all general
protections and remote control are available.

8.4.6.3 Operation rules:
Forced cooling mode:
The compressor runs at F2 frequency and
indoor fan runs as breeze. After running for 30
minutes. the machine will turn to auto mode as
24°C(75.2°F) setting temperature.
Forced auto mode:
The action of forced auto mode is the same as
normal auto mode with 24°C(75.2°F) setting
temperature.

8.4.7 Timer function

8.4.7.1 Timing range is 24 hours.

8.4.7.2 Timer on. The machine will turn on
automatically when reaching the setting time.

8.4.7.3 Timer off. The machine will turn off
automatically when reaching the setting time.

8.4.7.4 Timer on/off. The machine will turn on
automatically when reaching the setting “on”
time, and then turn off automatically when
reaching the setting “off” time.

8.4.7.5 Timer off/on. The machine will turn off

automatically when reaching the setting “off”

time, and then turn on automatically when
reaching the setting “on” time.

8.4.7.6 The timer function will not change the
AC current operation mode. Suppose AC is off

34

now, it will not start up firstly after setting the

“timer off” function. And when reaching the

setting time, the timer LED will be off and the
AC running mode has not been changed.

8.4.7.7 The setting time is relative time.

8.4.8 Sleep function mode

8.4.8.1 Operation time in sleep mode is 7 hours.
After 7 hours the AC quits this mode and turns
off.

8.4.8.2. Operation process in sleep mode is as
follow:
When cooling, the setting temperature rises
1°C(33.8°F) (be lower than 30°C(86°F)) every
one hour, 2 hours later the setting temperature
stops rising and indoor fan is fixed as low
speed.
When heating, the setting temperature
decreases 1°C(33.8°F) (be higher than
17°C(62.6°F)) every one hour, 2 hours later the
setting temperature stops rising and indoor fan
is fixed as low speed. (Anti-cold wind function
has the priority)

8.4.8.3 Timer setting is available

8.4.8.4 When user uses timer off function in
sleep mode (or sleep function in timer off mode),
if the timing is less than 7 hours, sleep function
will be cancelled when reaching the setting time.
If the timing is more than 7 hours, the machine
will not stop until reaches the setting time in
sleep mode.

8.4.9 Auto-Restart function

The indoor unit is equipped with auto-restart
function, which is carried out through an
auto-restart module. In case of a sudden power
failure, the module memorizes the setting
conditions before the power failure. The unit will
resume the previous operation setting (not
including swing function) automatically after 3
minutes when power returns.
If the memorization condition is forced cooling
mode, the unit will run in cooling mode for 30
minutes and turn to auto mode as 24°C(75.2°F)
setting temp.
If AC is off before power off and AC is required
to start up now, the compressor will have 1
minute delay when power on. Other conditions,

the compressor will have 3 minutes delay when
restarts.

8.4.10 Follow me

1) If the indoor PCB receives the signal which
results from pressing the FOLLOW ME button
on remote controller, the buzzer will emit a
sound and this indicates the follow me function
is initiated. But when the indoor PCB receives
signal which sent from remote controller every
3 minutes, the buzzer will not respond. When
the unit is running with follow me function, the
PCB will control the unit according to the
temperature from follow me signal, and the
temperature collection function of room
temperature sensor will be shielded, but the
error detective function of room temperature
sensor will be still valid.

2) When the follow me function is available,
the PCB will control the unit according to the
room temperature from the remote controller
and the setting temperature.

3) The PCB will take action to the mode
change information from remote controller
signal, but it will not affected by the setting
temperature.

4) When the unit is running with follow me

function, if the PCB doesn’t receive any signal

from remote controller for 7 minutes or pressing
FOLLOW ME button again, the follow me
function will be turned off automatically, and the
temperature will control the unit according to
the room temperature detected from its own
room temperature sensor and setting
temperature.

8.4.11 Self clean

For heat pump models which are provided with
this function, after running in cooling or drying

mode, if the user press “Self Clean” button on

remote controller, firstly, indoor unit runs in fan
only mode for a while, then low heat operation
and finally runs in fan only again. This function
can keep the inside of indoor unit dry and
prevent breeding of mold.

8.4.12 Refrigerant Leakage Detection

With this new technology, the display area will

35

show “EC” when the outdoor unit detects
refrigerant leakage.

8.4.13 Louver Position Memory Function

When starting the unit again after shutting down,
its louver will restore to the angle originally set
by the user, but the precondition is that the
angle must be within the allowable range, if it
exceeds, it will memorize the maximum angle
of the louver. During operation, if the power fails
or the end user shuts down the unit in the turbo
mode, the louver will restore to the default
angle.

8.4.14 8°C Heating(optional)

In heating operation, the preset temperature of

the air conditioner can be as lower as 8°C,
which keeps the room temperature steady at
8°C and prevents household things freezing
when the house is unoccupied for a long time in
severe cold weather.

8.4.15 Silence operation(optional)

Press the “silence” button on remote controller
to initiate SILENCE function. When the Silence
function is activated, the compressor running
frequency will keep lower than F2 and the
indoor unit will bring faint breeze, which will
reduce the noise to the lowest level and create
a quiet and comfortable room for you.

36

9. Troubleshooting

Safety

Electricity power is still kept in capacitors even the power supply is shut off. Do not forget to discharge the electricity
power in capacitor.

Electrolytic Capacitors

(HIGH VOLTAGE! CAUTION!)

For other models, please connect discharge resistance (approx.100Ω 40W) or soldering iron (plug) between +, ­terminals of the electrolytic capacitor on the contrary side of the outdoor PCB.

Note: The picture above is only for reference. The plug of your side may be different.

37

9.1 Indoor Unit Error Display

Operation

lamp

Timer lamp

Display

LED STATUS

☆ 1 time

X

E0

Indoor unit EEPROM parameter error

☆ 2 times

X

E1

Indoor / outdoor units communication error

☆ 3 times

X

E2

Zero-crossing signal detection error

☆ 4 times

X

E3

Indoor fan speed has been out of control

☆ 5 times

X

E4

Indoor room temperature sensor T1 open circuit or short
circuit

☆ 6 times

X

E5

Evaporator coil temperature sensor T2 open circuit or
short circuit

☆ 7 times

X

EC

Refrigerant leakage detection

☆ 2 times

O

F1

Outdoor ambient temperature sensor T4 open circuit or
short circuit

☆ 3 times

O

F2

Condenser coil temperature sensor T3 open circuit or
short circuit

☆ 4 times

O

F3

Compressor discharge temperature sensor T5 open
circuit or short circuit

☆ 5 times

O

F4

Outdoor unit EEPROM parameter error

☆ 6 times

O

F5

Outdoor fan speed has been out of control

☆ 1 times

☆

P0

IPM malfunction or IGBT over-strong current protection

☆ 2 times

☆

P1

Over voltage or over low voltage protection

☆ 3 times

☆

P2

High temperature protection of compressor top
diagnosis and solution(only for 9k,12k models)

☆ 5 times

☆

P4

Inverter compressor drive error

O（light） X（off） ☆（flash）

38

9.2 Outdoor unit error display

 MOC-09HFN1-MW0W and MOC-12HFN1-MV0W:

After power on, LED100(Blue color) will be slow flash(0.2Hz) when the unit is in standby and
quick flash (2.5Hz) if the unit has some problems.

No.

Problems

LED301
(Green)

LED300
(Red)

IU display

1

standby for normal

O X 2

Operation normally

X O 3

IPM malfunction or IGBT over-strong current protection

☆

X

P0

4

Over voltage or too low voltage protection

O O P1

5

Over voltage or too low voltage protection

O ☆ P1

6

Inverter compressor drive error

X ☆ P4 7 Inverter compressor drive error

☆

O

P4 8 Inverter compressor drive error

☆

☆

P4

O（light） X（off） ☆（2.5Hz flash）

39

 MOF-18HFN1-MU0W

other status (error)

aways on (running)

Flashing once per half second (high speed flashing) (error)

Flashing once per second(low speed flashing) (standby)

when power is on, LED4 aways on

power light

LED2 off and LED1 on (running)

LED2 on and LED1 off (standby)

LED4

LED3

LED1

LED2

T3.15AL/250VAC

202302130651

CE-KFR26W/BP3N1(PMV)-120.D.13.WP2-1

RED

BLUE

YELLOW

BROWN

BROWN

BLUE

RED

YELLOW

CN4

4-WAY-N

CN33

4-WAY-N

+

E8

C73C72

C12

C11

+

+

E201

+

+

E202

+

+

E13

+

+

E207

+

+

E203

C6

C213

L1

R47

C32

R206

R216

C71

C70

R110
R109

R108

R107

CN35

CN34

C66

C65

CN31

C2

CN29

CN28

CN27

+

E2

ZR3

ZR2

ZR1

RY4

RY3

RY2

RY1

L-OUT

R94

R93

R92

R91

R90

R89

R88

R87

R86

R85

R84

R83

R82

R81

R80

R79

R78

R77

R76

R75

R74

R73

R72

R71

R70

R69

R68

R67

R66

R65

R64

R63

R62

R61

R60

R59

R58

R57

R56

R55

R54

R53

R52

R51

R50
R49

R48

R46

R45

R44

R43

R42

R40

R39

R38

R37

R36

R35

R34

R33

R32

R31

R30

R29

R28

R27

R204

R212

R210

R20

R19

R207

R211

R213

R208

R209

R9

R11

R205

R12

R8

R201

R215

R214

R2

R1

Q3

Q2

Q1

PTC2

OSC1

LED4

LED3

LED2

LED1

P

N

U

V

W

U+

U-

V+

V-

W+

W­FAULT
ISO
+17V
VSS

VB1

VB2

VB3

IPM1

IC18

IC17

IC16

IC15

IC14

IC13

33

49

17

1

IC12

IC11

IC10

IC9

IC8

IC7

24LC256

IC6

IC5

IC201

IC3

IC203

IC202

FUSE2

T20AL/250VAC

FUSE1

+

E25

+

E24

+

E23

+

E22

+

E21

+

E20

+

E19

+

E18

+

E17

+

E16

+

E15

+

E14

+

E11

+

E206

E5

+

E4

DZ2

DZ1

D17

D16

D15

D14

D206

D11

D209

D7

D202

D207

D203

D1

CN22

TestPort

CN21

PMV

CN20

HuiQi

CN19

W

CN18

V

CN17

U

CN16PaiQi

CN14

CompTop

CN13

CN12

PCPort

CN11

S

CN9

CN8

HEAT-N

CN7

HEAT-L

CN6

CN3

CN2

L-IN

CN1

N-IN

C63

C62

C61

C60

C59

C58

C57

C56

C55

C54

C53

C52

C51

C50

C49

C48

C47

C46

C45

C44
C43

C42

C41

C40

C39

C38

C37

C36

C35

C34

C33

C31

C30

C29

C28

C27

C26

C25

C24

C23

C22

C21

C20

C17

C18

C210

C206

C14

C205

C204

C208

C8

C203

C209

C5

C4

C3

C1

BR2

BR1

CN24

CN25

CN26

CN30

C64

R101

R102

R103

R104

R105

R106

C68

C69

IC19

24LC04

C214

R202

1

6

7

10

11

12

13

14

15

3

8

T201

D2

C201

C202

T1

D9

D10

C67

D208

R217

D204

D201

D205

+

E204

+

E28

CN15

TEMP

+

E27+E26

R41

DAS1

PTC1

X1

R95

CN32

CN36

CN38

CN37

C9

R203

+

E3

No.

Problems

LED2
(Green)

LED1
(Red)

IU display

1

standby for normal

O X 2

Operation normally

X O 3

IPM malfunction or IGBT over-strong current protection

☆

X

P0 4 Over voltage or too low voltage protection

O O P1

5

Over voltage or too low voltage protection

O ☆ P1

6

Inverter compressor drive error

X ☆ P4 7 Inverter compressor drive error

☆

O

P4 8 Inverter compressor drive error

☆

☆

P4

O（light） X（off） ☆（2.5Hz flash）

40

 MOG-24HFN1-MT0W

1

1

1

1

1

15
16

2

1

P E Q

L-OUT

1

1

1

1

1

1

1

1

1

CE-KFR80W/BP3T4N1(DC MOTOR)-310.D.03.WP1-1

DC MOTOR

17V N-

N-

S

P+

RUN

202302130895

LED1

(standby) Flashing once per second(low speed flashing)

(error) Flashing once per half second (high speed flashing)

(running) aways on

P1

P2

FUSE1

T5A 250VAC

D34

D33

D32

D31

CN28

Q5

CN5

N

Q1

CN39

C83

C82

C81

C80

CN37

R118

R117

R116

R115

R114

R113

R112

R111

R98

L30

IC32

IC30

IC18

+

E33

+

E31

+

E28

E27

DZ1

D30

CN38

SW1

CN15

T2B

CN27

PFC-CONTROL

CN26

TestPort

R110

R109

R108

R107

R106
R105

R104

R103

R97

R57

R56

R55

IC9

D28

D27

C79

C78

R77

DSP1

R46

+

E7

+

E8

+

E11

C77

C76

C75

C74

C73

C72

D1

C71

IC1

R87

IC15

D2

ZR3

ZR2

ZR1

RY4

RY3

RY2

RY1

R102

R101

R100

R99

R96

R95

R94

R93

R92

R91

R90

R89

R88

R86

R85

R84

R83

R82

R81

R80

R79

R78R76

R75

R74

R73

R72

R71

R70

R69

R68

R67

R66

R65

R64

R63

R62

R61

R60

R59

R58

R54

R53

R52

R51

R50

R49

R48

R47

R45

R44

R42

R41

R40

R39

R38

R37

R36

R35

R34

R33

R32

R31

R30

R29

R28

R27

R26

R25

R24

R23

R22

R21

R20

R19

R18

R17

R16

R15

R14

R13

R11

R10

R9

R8

R7

R6

R5

R4

R3

R2

R1

Q4

Q3

Q2

PTC1

P-1

GND

IC16

IC14

IC13

IC12

IC11

IC10

IC8

IC7

IC5

IC4

IC3

IC2

FUSE2

T30A 250VAC

+

E13

+

E12

+

E10

+

E9

+

E6

+

E4

+

E2

+

E1

D19

D18

D17

D16

D14

D13

D12

D11

D10

D9

D8

D7

D6

D5

D4

D3

CT1

CONdebug1

CN25

S-A

CN24

D

CN23

S-B

CN22

C

CN21

TO-DRIVE

CN20

S-C

CN19

B

CN18

A

CN17 T3/T4

CN16

S-D

CN14

LOW/HIGH

CN12

CompTop

CN7

PAI QI

C59

C58

C57

C56

C55

C54

C53

C51

C49

C47

C46

C45

C44

C43

C42

C41

C40

C39

C38

C37

C36

C35

C34

C33

C32

C31

C30

C29

C28

C27

C26

C25

C24

C23

C22

C21

C20

C19

C18

C17

C16

C15

C14

C13

C12

C10

C9

C1

AS1

D20

D15

C60

C61

C62

C63

C64

C65

C66

C67

C68

C69

C70

+

E14

+

E5

IC6

X1

IC17

C8

C7

C6

L1

L2

CN2

N

CN8

N

CN1

4-WAY

CN6

HEAT1

CN9

HEAT2

CN3

L-IN

CN4

N-IN

CN29

N-OUT

CN10

R120

+

LED1

C52

C48

C5

C3

C4

C2

C84

C11

C85

P-2
GND

41

9.3 Diagnosis and Solution

9.3.1 EEPROM parameter error diagnosis and solution(E0/F4)

Error Code

E0/F4

Malfunction decision
conditions

Indoor or outdoor PCB main chip does not receive feedback
from EEPROM chip.

Supposed causes

● Installation mistake

● PCB faulty

Trouble shooting:

If the EEPROM chip
is welded on main
PCB, replace the
main PCB directly.
Otherwise, check
whether the
EEPROM chip
plugged in main PCB
well?

Yes

No

Yes

Correct the connection.

Replace the main PCB.

Shut off the power supply and

turn it on 5 seconds later. Is it

still displaying the error code?

EEPROM: a read-only memory whose contents can be erased and reprogrammed using a pulsed
voltage. For the location of EEPROM chip, please refer to the below photos.

Indoor PCB

Outdoor PCB(18k model)

Note: The two photos above are only for reference, it’s may be not same totally with the ones on
your side.

42

9.3.2 Indoor / outdoor unit’s communication diagnosis and solution(E1)

Error Code

E1

Malfunction decision
conditions

Indoor unit does not receive the feedback from outdoor unit during

110 seconds and this condition happens four times continuously.

Supposed causes

● Wiring mistake

● Indoor or outdoor PCB faulty

Trouble shooting:

Yes

Yes

Measure Vs, is it moving alternately
with positive value?
(Vs is the voltage between L2 and S
of outdoor unit. Connect the red pin of
multimeter with L2 port, black pin with
S port)

Yes

Power off, then turn on the unit 5 seconds
later(reconnect the power wire).Is the error
still displaying after several minutes?

No

Replace the outdoor main PCB.

Power on. Is the error extinguished?

Check all the wiring with indoor units.
Is the wiring to the indoor main PCB
connected correctly?

Replace the indoor main PCB.

Yes

Replace the outdoor main PCB.

No

Check all the wiring with outdoor
uni ts. Is the wiring to the outdoor
main PCB connected correctly? Is
the reactor connected well?

Power on. Is the error extinguished?

Replace the indoor main PCB.

No

Yes

Measure the resistance of the
reactor(The one without capacitor).
If it is zero ,follow the below step. If
not, replace a new reactor.

43

Remark:

Use a multimeter to test the DC voltage
between L2 port and S port of outdoor
unit. The red pin of multimeter connects
with L2 port while the black pin is for S
port.

When AC is normal running, the voltage
will move alternately between -50V to
50V.

If the outdoor unit has malfunction, the
voltage will move alternately with positive
value.

While if the indoor unit has malfunction,
the voltage will be a certain value.

Remark:

Use a multimeter to test the resistance
of the reactor which does not connect
with capacitor.
The normal value should be around zero
ohm. Otherwise, the reactor must have
malfunction and need to be replaced.

44

9.3.3 Zero crossing detection error diagnosis and solution(E2)

Error Code

E2

Malfunction decision
conditions

When PCB does not receive zero crossing signal feedback for 4
minutes or the zero crossing signal time interval is abnormal.

Supposed causes

● Connection mistake

● PCB faulty

Trouble shooting:

Check if the connections and

power supply is normal?

Correct the connections. Turn on the
unit when the power supply is good.

No

Yes

Indoor main PCB is

defective. Replace indoor

main PCB.

45

9.3.4 Fan speed has been out of control diagnosis and solution(E3)

Error Code

E3

Malfunction decision
conditions

When indoor fan speed keeps too low (300RPM) for certain time,
the unit will stop and the LED will display the failure.

Supposed causes

● Wiring mistake

● Fan ass’y faulty

● Fan motor faulty

● PCB faulty

Trouble shooting:

Shut off the power supply

and turn it on 5 seconds

later. Is it still displaying

the error code?

Shut off the power supply,
rotate the fan by hand.
Does it rotate properly?

The unit operates normally.

Find out the cause and

have it solved. For

example, check

whether the fan is

blocked or the bearing

is broken?

Check the wires of fan

motor. Are all the

connections good?

No

Yes

No

Correct the connections.No

Yes

Check whether the main PCB is

normal through index 2?

Yes

Yes

Check whether the fan

motor is normal through

index 1?

Yes

Replace the fan

motor

Replace the

main PCB.

The

malfunction is

solved?

No

No

If the

malfunction is

still existing,

replace the

main PCB

No

46

Index 1:

1.Indoor or Outdoor DC Fan Motor(control chip is in fan motor)
Measure the resistance value of each winding by using the tester. If any resistance value is zero, the
fan motor must has problems and need to be replaced.

Index2:
1:Indoor or Outdoor DC Fan Motor(control chip is in fan motor)
Power on and when the unit is in standby, measure the voltage of pin1-pin3, pin4-pin3 in fan motor
connector. If the value of the voltage is not in the range showing in below table, the PCB must has
problems and need to be replaced.

DC motor voltage input and output

NO.

Color

Signal

Voltage

1

Red

Vs/Vm

280V~380V

2

---

---

---

3

Black

GND

0V

4

White

Vcc

14-17.5V

5

Yellow

Vsp

0~5.6V

6

Blue

FG

14-17.5V

47

2.Outdoor DC Fan Motor(control chip is in outdoor PCB)

NO. 1 2 3 4

5

Color

Orange

Grey

White

Pink

Black

Signal

Hu

Hv

Hw

Vcc

GND

Color

Red

Blue

Yellow

Signal

W V U

1) Release the UVW connector. Measure the resistance of U-V, U-W, V-W. If the resistance is not

equal to each other, the fan motor must has problems and need to be replaced. Otherwise, go to
step 2.

2) Power on and when the unit is in standby, measure the voltage of pin4-5 in feedback signal

connector. If the value is not 5V, change the PCB. Otherwise, go to step 3.

3) Rotate the fan by hand, measure the voltage of pin1-5, pin 2-5 and pin 3-5 in feedback signal

connector. If any voltage is not positive voltage fluctuation, the fan motor must has problems and
need to be replaced.

48

9.3.5 Open circuit or short circuit of temperature sensor diagnosis and solution(E5)

Error Code

E5

Malfunction decision
conditions

If the sampling voltage is lower than 0.06V or higher than 4.94V,
the LED will display the failure.

Supposed causes

● Wiring mistake

● Sensor faulty

Trouble shooting:

Check the connections
between temperature
sensor and main PCB.
Are the connections
good?

Correct the connections.No

Yes

Yes

Replace indoor or

outdoor main PCB.

Replace the sensor and
check if the problem happen
again?

Check the resistance value
of the sensor via
table1(p64)and table
2(p65), is it normal?

No

49

9.3.6 Refrigerant Leakage Detection diagnosis and solution(EC)

Error Code

EC

Malfunction decision
conditions

Define the evaporator coil temp.T2 of the compressor just starts
running as Tcool.
In the beginning 5 minutes after the compressor starts up, if T2
＜Tcool－2°C(Tcool－35.6°F) does not keep continuous 4
seconds and this situation happens 3 times, the display area will
show “EC” and AC will turn off.

Supposed causes

● T2 sensor faulty

● Indoor PCB faulty

● System problems, such as leakage or blocking.

Trouble shooting:

Is there cool air blowing out from
indoor air outlet?

Yes

Yes

Check if T2 sensor is well fixed. Correct

the installation or replace T2 sensor. Does

the problem remain again?

No

Is there any leakage? Especially
the connection parts, such as the
gas valve and the liquid valve.

No

Shut off the power supply and turn it on

5 seconds later. Is it still displaying the

error code?

Replace indoor PCB.

Yes

Repair the leakage and

recharge the refrigerant.

Yes

Clear the blocking.

Yes

Is there any blocking? (Such as the
capillary or the welded points of the
pipes.)

50

9.3.7 IPM malfunction or IGBT over-strong current protection diagnosis and solution(P0)

Error Code

P0

Malfunction decision
conditions

When the voltage signal that IPM send to compressor drive chip
is abnormal, the display LED will show “P0” and AC will turn off.

Supposed causes

● Wiring mistake

● IPM malfunction

● Outdoor fan ass’y faulty

● Compressor malfunction

● Outdoor PCB faulty

Trouble shooting:

Check if the wiring between main
PCB and compressor connected by
error and if the wires and connectors
are broken?

Correct the connection or replace the

wires and connectors.

Yes

No

IPM continuity check. Check if the
IPM terminal resistance values are
uniform. Refer to page 64.

Replace the IPM board or replace the

main PCB if the IPM board and main

PCB are integrated together.

No

Check if the outdoor fan runs

properly or the outdoor unit

ventilation is good.

Yes

No

please refer to the solution of fan

speed is out of control.

Yes

Check if the compressor resistance

values are uniform .Refer to page 63.

No Replace the compressor.

Yes

Replace the outdoor main PCB if the

main PCB and IPM are separate.

51

Take the 9k model as example:

P-U

P-V

52

P-W

N-U

53

N-V

N-W

54

9.3.8 Over voltage or too low voltage protection diagnosis and solution(P1)

Error Code

P1

Malfunction decision
conditions

An abnormal voltage rise or drop is detected by checking the
specified voltage detection circuit.

Supposed causes

● Power supply problems.

● System leakage or block

● PCB faulty

Trouble shooting:

Check if the power supply is

normal.

Check if all the connections
and wires are good?

Disconnect the unit with power

supply and try to restart the unit

when power supply gets normal.

No

Yes

No

Correct the connections or replace

the wires.

Yes

Power on and when the unit is in

standby, check if the voltage

between P and N is around DC

310V or 340V or 380V? For different

kinds of units, the voltage differs.

Consult with technical engineer to

get definite value. Then start up the

unit, measure the voltage between P

and N. Is it in 220V~400V?

Replace outdoor main PCB.

Yes

No

Replace the IPM board if it is

separate with main PCB.

Remark:
Measure the DC voltage
between P and N port. The
normal value should be
around 310V.

P

N

55

9.3.9 High temperature protection of compressor top diagnosis and solution(P2)

Error Code

P2

Malfunction decision
conditions

If the sampling voltage is not 5V, the LED will display the failure.

Supposed causes

● Power supply problems.

● System leakage or block

● PCB faulty

Trouble shooting:

Check if the air flow system

of indoor and outdoor units

are obstructed?

Clear up the air inlet and outlet or the heat

exchanger of indoor and outdoor units.

Yes

No

Yes

Yes

Turn off the power supply and turn
it on 10 minutes later.

Check if the unit can start

normally.

No

Check if the refrigerant

charge volume is normal?

Recharge the correct

refrigerant volume.

Refrigerant system is blocked, such

as capillary or welded point of pipes.

Yes

Check if all the connection, especially

the connection of OLP (Over Load

Protector) sensor is good.

Correct the connection.No

Measure the resistance
between the two ports of
the OLP. Is it zero?

Yes

Replace the OLP.No

Replace the outdoor control PCB.Yes

No

56

9.3.10 Inverter compressor drive error diagnosis and solution(P4)

Error Code

P4

Malfunction decision
conditions

An abnormal inverter compressor drive is detected by a special
detection circuit, including communication signal detection,
voltage detection, compressor rotation speed signal detection
and so on.

Supposed causes

● Wiring mistake

● IPM malfunction

● Outdoor fan ass’y faulty

● Compressor malfunction

● Outdoor PCB faulty

Trouble shooting:

Check if the wiring between main
PCB and compressor connected by
error and if the wires and connectors
are broken?

Correct the connection or replace the

wires and connectors.

Yes

No

IPM continuity check. Check if the
IPM terminal resistance values are
uniform. Refer to page 64.

Replace the IPM board or replace the

main PCB if the IPM board and main

PCB are integrated together.

No

Check if the outdoor fan runs

properly or the outdoor unit

ventilation is good.

Yes

No

please refer to the solution of fan speed

is out of control.

Yes

Check if the compressor resistance

values are uniform .Refer to page 63.

No Replace the compressor.

Yes

Replace the outdoor main PCB if the

main PCB and IPM are separate.

57

Main parts check

1. Temperature sensor checking

Disconnect the temperature sensor from PCB, measure the resistance value with a tester.

Temperature sensors.
Room temp.(T1) sensor,
Indoor coil temp.(T2) sensor,
Outdoor coil temp.(T3) sensor,
Outdoor ambient temp.(T4) sensor,
Compressor discharge temp.(T5) sensor.
Measure the resistance value of each winding by using the multi-meter.

58

Appendix 1 Temperature Sensor Resistance Value Table for T1,T2,T3,T4 (°C--K)

°C

°F

K Ohm

°C

°F

K Ohm

°C

°F

K Ohm

°C

°F

K Ohm

-20

-4

115.266

20

68

12.6431

60

140

2.35774

100

212

0.62973

-19

-2

108.146

21

70

12.0561

61

142

2.27249

101

214

0.61148

-18 0 101.517

22

72

11.5

62

144

2.19073

102

216

0.59386

-17 1 96.3423

23

73

10.9731

63

145

2.11241

103

217

0.57683

-16 3 89.5865

24

75

10.4736

64

147

2.03732

104

219

0.56038

-15 5 84.219

25

77

10

65

149

1.96532

105

221

0.54448

-14 7 79.311

26

79

9.55074

66

151

1.89627

106

223

0.52912

-13 9 74.536

27

81

9.12445

67

153

1.83003

107

225

0.51426

-12

10

70.1698

28

82

8.71983

68

154

1.76647

108

226

0.49989

-11

12

66.0898

29

84

8.33566

69

156

1.70547

109

228

0.486

-10

14

62.2756

30

86

7.97078

70

158

1.64691

110

230

0.47256

-9

16

58.7079

31

88

7.62411

71

160

1.59068

111

232

0.45957

-8

18

56.3694

32

90

7.29464

72

162

1.53668

112

234

0.44699

-7

19

52.2438

33

91

6.98142

73

163

1.48481

113

235

0.43482

-6

21

49.3161

34

93

6.68355

74

165

1.43498

114

237

0.42304

-5

23

46.5725

35

95

6.40021

75

167

1.38703

115

239

0.41164

-4

25

44

36

97

6.13059

76

169

1.34105

116

241

0.4006

-3

27

41.5878

37

99

5.87359

77

171

1.29078

117

243

0.38991

-2

28

39.8239

38

100

5.62961

78

172

1.25423

118

244

0.37956

-1

30

37.1988

39

102

5.39689

79

174

1.2133

119

246

0.36954

0

32

35.2024

40

104

5.17519

80

176

1.17393

120

248

0.35982

1

34

33.3269

41

106

4.96392

81

178

1.13604

121

250

0.35042

2

36

31.5635

42

108

4.76253

82

180

1.09958

122

252

0.3413

3

37

29.9058

43

109

4.5705

83

181

1.06448

123

253

0.33246

4

39

28.3459

44

111

4.38736

84

183

1.03069

124

255

0.3239

5

41

26.8778

45

113

4.21263

85

185

0.99815

125

257

0.31559

6

43

25.4954

46

115

4.04589

86

187

0.96681

126

259

0.30754

7

45

24.1932

47

117

3.88673

87

189

0.93662

127

261

0.29974

8

46

22.5662

48

118

3.73476

88

190

0.90753

128

262

0.29216

9

48

21.8094

49

120

3.58962

89

192

0.8795

129

264

0.28482

10

50

20.7184

50

122

3.45097

90

194

0.85248

130

266

0.2777

11

52

19.6891

51

124

3.31847

91

196

0.82643

131

268

0.27078

12

54

18.7177

52

126

3.19183

92

198

0.80132

132

270

0.26408

13

55

17.8005

53

127

3.07075

93

199

0.77709

133

271

0.25757

14

57

16.9341

54

129

2.95896

94

201

0.75373

134

273

0.25125

15

59

16.1156

55

131

2.84421

95

203

0.73119

135

275

0.24512

16

61

15.3418

56

133

2.73823

96

205

0.70944

136

277

0.23916

17

63

14.6181

57

135

2.63682

97

207

0.68844

137

279

0.23338

18

64

13.918

58

136

2.53973

98

208

0.66818

138

280

0.22776

19

66

13.2631

59

138

2.44677

99

210

0.64862

139

282

0.22231

59

Appendix 2 Temperature Sensor Resistance Value Table for T5 (°C --K)

°C

°F

K Ohm

°C

°F

K Ohm

°C

°F

K Ohm

°C

°F

K Ohm

-20

-4

542.7

20

68

68.66

60

140

13.59

100

212

3.702

-19

-2

511.9

21

70

65.62

61

142

13.11

101

214

3.595

-18

0

483

22

72

62.73

62

144

12.65

102

216

3.492

-17

1

455.9

23

73

59.98

63

145

12.21

103

217

3.392

-16

3

430.5

24

75

57.37

64

147

11.79

104

219

3.296

-15

5

406.7

25

77

54.89

65

149

11.38

105

221

3.203

-14

7

384.3

26

79

52.53

66

151

10.99

106

223

3.113

-13

9

363.3

27

81

50.28

67

153

10.61

107

225

3.025

-12

10

343.6

28

82

48.14

68

154

10.25

108

226

2.941

-11

12

325.1

29

84

46.11

69

156

9.902

109

228

2.86

-10

14

307.7

30

86

44.17

70

158

9.569

110

230

2.781

-9

16

291.3

31

88

42.33

71

160

9.248

111

232

2.704

-8

18

275.9

32

90

40.57

72

162

8.94

112

234

2.63

-7

19

261.4

33

91

38.89

73

163

8.643

113

235

2.559

-6

21

247.8

34

93

37.3

74

165

8.358

114

237

2.489

-5

23

234.9

35

95

35.78

75

167

8.084

115

239

2.422

-4

25

222.8

36

97

34.32

76

169

7.82

116

241

2.357

-3

27

211.4

37

99

32.94

77

171

7.566

117

243

2.294

-2

28

200.7

38

100

31.62

78

172

7.321

118

244

2.233

-1

30

190.5

39

102

30.36

79

174

7.086

119

246

2.174

0

32

180.9

40

104

29.15

80

176

6.859

120

248

2.117

1

34

171.9

41

106

28

81

178

6.641

121

250

2.061

2

36

163.3

42

108

26.9

82

180

6.43

122

252

2.007

3

37

155.2

43

109

25.86

83

181

6.228

123

253

1.955

4

39

147.6

44

111

24.85

84

183

6.033

124

255

1.905

5

41

140.4

45

113

23.89

85

185

5.844

125

257

1.856

6

43

133.5

46

115

22.89

86

187

5.663

126

259

1.808

7

45

127.1

47

117

22.1

87

189

5.488

127

261

1.762

8

46

121

48

118

21.26

88

190

5.32

128

262

1.717

9

48

115.2

49

120

20.46

89

192

5.157

129

264

1.674

10

50

109.8

50

122

19.69

90

194

5

130

266

1.632

11

52

104.6

51

124

18.96

91

196

4.849

12

54

99.69

52

126

18.26

92

198

4.703

13

55

95.05

53

127

17.58

93

199

4.562

14

57

90.66

54

129

16.94

94

201

4.426

15

59

86.49

55

131

16.32

95

203

4.294

16

61

82.54

56

133

15.73

96

205

4.167

17

63

78.79

57

135

15.16

97

207

4.045

18

64

75.24

58

136

14.62

98

208

3.927

19

66

71.86

59

138

14.09

99

210

3.812

60

Appendix 3:

ΔT(℉) =

9ΔT(℃)

5

°C

°F

°C

°F

°C

°F

°C

°F

°C

°F

-5

23

21

69.8

51

123.8

82

179.6

113

235.4

-4

24.8

22

71.6

52

125.6

83

181.4

114

237.2

-3

26.6

23

73.4

53

127.4

84

183.2

115

239

-2

28.4

24

75.2

54

129.2

85

185

116

240.8

-1

30.2

25

77

55

131

86

186.8

117

242.6 0 32

25.5

77.9

56

132.8

87

188.6

118

244.4

0.5

32.9

26

78.8

57

134.6

88

190.4

119

246.2

1

33.8

27

80.6

58

136.4

89

192.2

120

248

1.5

34.7

28

82.4

59

138.2

90

194

121

249.8 2 35.6

29

84.2

60

140

91

195.8

122

251.6

2.5

36.5

30

86

61

141.8

92

197.6

123

253.4 3 37.4

31

87.8

62

143.6

93

199.4

124

255.2

3.5

38.3

32

89.6

63

145.4

94

201.2

125

257 4 39.2

33

91.4

64

147.2

95

203

126

258.8

4.5

40.1

34

93.2

65

149

96

204.8

127

260.6 5 41

35

95

66

150.8

97

206.6

128

262.4 6 42.8

36

96.8

67

152.6

98

208.4

129

264.2 7 44.6

37

98.6

68

154.4

99

210.2

130

266

8

46.4

38

100.4

69

156.2

100

212

131

267.8

9

48.2

39

102.2

70

158

101

213.8

132

269.6

10

50

40

104

71

159.8

102

215.6

133

271.4

11

51.8

41

105.8

72

161.6

103

217.4

134

273.2

12

53.6

42

107.6

73

163.4

104

219.2

135

275

13

55.4

43

109.4

74

165.2

105

221

136

276.8

14

57.2

44

111.2

75

167

106

222.8

137

278.6

15

59

45

113

76

168.8

107

224.6

138

280.4

16

60.8

46

114.8

77

170.6

108

226.4

139

282.2

17

62.6

47

116.6

78

172.4

109

228.2

140

284

18

64.4

48

118.4

79

174.2

110

230

141

285.8

19

66.2

49

120.2

80

176

111

231.8

142

287.6

20

68

50

122

81

177.8

112

233.6

143

289.4

61

2.Compressor checking

Measure the resistance value of each winding by using the tester.

Position

Resistance Value

DA110S1C-30FZ

DA130M1C-31FZ

DA250S2C-30MT

Blue - Red

0.8Ω

(20°C /68°F)

1.77Ω

(20°C /68°F)

0.55Ω

(20°C /68°F)

Blue - Black

Red - Blue

62

3. IPM continuity check

Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital
tester to measure the resistance between P and UVWN; UVW and N.

Digital tester

Normal resistance value

Digital tester

Normal resistance value

(+)Red

(-)Black

∞

(Several MΩ)

(+)Red

(-)Black

∞

(Several MΩ)

P

N

U N U V V W W

(+)Red

4: Indoor AC Fan Motor

Measure the resistance value of each winding by using the tester.

Position

Resistance Value

RPG13B

Black - Red

100.5Ω±8%

(20°C /68°F)

(Brand: Weiling)

100Ω±8%

(20°C /68°F)

(Brand: Dayang)

White - Black

64.5Ω±8%

(20°C /68°F)

(Brand: Weiling)

68.5Ω±8%

(20°C /68°F)

(Brand: Dayang)

63

5: Pressure On Service Port

Cooling chart:

°F(°C)

ODT

IDT

75

(23.89)

85

(29.44)

95

(35)

105

(40.56)

115

(46.11)

BAR

70/59

8.2

7.8

8.1

8.6

10.1

BAR

75/63

8.6

8.3

8.7

9.1

10.7

BAR

80/67

9.3

8.9

9.1

9.6

11.2

°F(°C)

ODT

IDT

75

(23.89)

85

(29.44)

95

(35)

105

(40.56)

115

(46.11)

PSI

70/59

119

113

117

125

147

PSI

75/63

124

120

126

132

155

PSI

80/67

135

129

132

140

162

°F(°C)

ODT

IDT

75

(23.89)

85

(29.44)

95

(35)

105

(40.56)

115

(46.11)

MPA

70/59

0.82

0.78

0.81

0.86

1.01

MPA

75/63

0.86

0.83

0.87

0.91

1.07

MPA

80/67

0.93

0.89

0.91

0.96

1.12

0.0

2.0

4.0

6.0

8.0

10.0

12.0

75 （23.89） 85 （29.44） 95 （35） 105 （40.56） 115 （46.11）

70/59

75/63

80/67

64

Heating Chart:

°F

(°C)

ODT

IDT

57/53

(13.89/11.67)

47/43

(8.33/6.11)

37/33

(2.78/0.56)

27/23

(-2.78/-5)

17/13

(-8.33/-10.56)

BAR

55

30.3

28.5

25.3

22.8

20.8

BAR

65

32.5

30.0

26.6

25.4

23.3

BAR

75

33.8

31.5

27.8

26.3

24.9

°F

(°C)

ODT

IDT

57/53

(13.89/11.67)

47/43

(8.33/6.11)

37/33

(2.78/0.56)

27/23

(-2.78/-5)

17/13

(-8.33/-10.56)

PSI

55

439

413

367

330

302

PSI

65

471

435

386

368

339

PSI

75

489

457

403

381

362

°F

(°C)

ODT

IDT

57/53

(13.89/11.67)

47/43

(8.33/6.11)

37/33

(2.78/0.56)

27/23

(-2.78/-5)

17/13

(-8.33/-10.56)

MPA

55

3.03

2.85

2.53

2.28

2.08

MPA

65

3.25

3.00

2.66

2.54

2.33

MPA

75

3.38

3.15

2.78

2.63

2.49

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

57/53

(13.89/11.67)

47/43

(8.33/6.11)

37/33

(2.78/0.56)

27/23

(-2.78/-5)

17/13

(-8.33/-10.56)

55

65

75

65

10. Exploded View(Version of 2013.07.19)

10.1 Indoor unit

MS11M-09HRFN1-MW0W:

ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST

No.

Part Name

Qty

BOM Code

No.

Part Name

Qty

BOM Code

1

Panel assembly

1

201132590959

15

Horizontal louver

1

201132590956

2

Air filter

2

201132590962

16

Chassis assembly

1

201132590963

3

Display box
assembly

1

203332390972

16.1

Louver motor

1

202400200031

3.1

Display board
assembly

1

201332391249

17

Pipe clamp board

1

201119900949

4

Cover of indoor
electronic control
box

1

201119900948

18

Installation plate

1

201232590037
5

Panel frame
assembly

1

201132590958

19

Electronic control
box assembly

1

203332391073

5.1

Screw cap

2

201119900950

19.1

Electronic control
box I

1

201132490125

6

Drain hose

1

201101020038

19.2

Electronic control
box II

1

201132490139

7

Pipe nut

1

201600330002

19.3

Main control board
assembly

1

201332391485

66

7

Pipe nut

1

201600330001

19.4

Ambient
temperature sensor
assembly

1

202433190000
8

Fix clamp of
temperature sensor

1

201102000305

19.5

Pipe temperature
sensor assembly

1

202301300584

9

Evaporator
assembly

1

201532590453

19.6

Wire joint

1

202301450119

10

Fan motor cover

1

201132490127

20

Cover of electronic
control box

1

201132490126

11

Asynchronous
motor

1

202400370022

21

Remote Controller

1

203355091532
12

Bearing holder

1

201119900952

22

Seal

1

202720090001

13

Bearing base

1

202719900606

23

Drain joint

1

201101020011

14

Cross flow fan

1

201100200054

24

Air freshening filter

1

201131410703

67

MS11M-12HRFN1-MV0W:

ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST

No.

Part Name

Qty

BOM Code

No.

Part Name

Qty

BOM Code

1

Panel assembly

1

201132590959

15

Horizontal louver

1

201132590956

2

Air filter

2

201132590962

16

Chassis assembly

1

201132590963

3

Display box
assembly

1

203332390972

16.1

Louver motor

1

202400200031

3.1

Display board
assembly

1

201332391249

17

Pipe clamp board

1

201119900949

4

Cover of indoor
electronic control
box

1

201119900948

18

Installation plate

1

201232590037
5

Panel frame
assembly

1

201132590958

19

Electronic control
box assembly

1

203332591105

5.1

Screw cap

2

201119900950

19.1

Electronic control
box I

1

201132490125

6

Drain hose

1

201101020038

19.2

Electronic control
box II

1

201132490139

7

Pipe nut

1

201600330003

19.3

Main control board
assembly

1

201332591013

7

Pipe nut

1

201600330001

19.4

Ambient
temperature sensor
assembly

1

202433190000
8

Fix clamp of
temperature sensor

1

201102000305

19.5

Pipe temperature
sensor assembly

1

202301300584

68

9

Evaporator
assembly

1

201532590458

19.6

Wire joint

1

202301450119

10

Fan motor cover

1

201132490127

20

Cover of electronic
control box

1

201132490126

11

Asynchronous
motor

1

202400370022

21

Remote Controller

1

203355091532
12

Bearing holder

1

201119900952

22

Seal

1

202720090001

13

Bearing base

1

202719900606

23

Drain joint

1

201101020011

14

Cross flow fan

1

201100200054

24

Air freshening filter

1

201131410703

69

MS11M-18HRFN1-MU0W:

ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST

No.

Part Name

Qty

BOM Code

No.

Part Name

Qty

BOM Code

1

Panel assembly

1

201132890674

15

Bearing holder

1

201119900952

2

Air filter

2

201132890670

16

Bearing base

1

202719900606

3

Display box
assembly

1

203332390972

17

Cross flow fan

1

201100200056

3.1

Display board
assembly

1

201332391249

18

Chassis assembly

1

201132890703

4

Cover of indoor
electronic control
box

1

201133091048

19

Pipe clamp board

1

201232800103
5

Panel frame
assembly

1

201132890673

20

Installation plate

1

201232590038

5.1

Screw cap

3

201119900950

21

Electronic control
box assembly

1

203332890569

6

Horizontal louver

1

201132890671

21.1

Wire joint

1

202301450119

7

Air outlet assembly

1

201132890677

21.2

Electronic control
box

1

201133090976

7.1

Louver motor

1

202400200120

21.3

Main control board
assembly

1

201332890610

70

8

Drain hose

1

201101020038

21.5

Ambient
temperature sensor
assembly

1

202432390005
9

Pipe nut

1

201600330001

21.6

Pipe temperature
sensor assembly

1

202301300584

9

Pipe nut

1

201600330003

22

Cover of electronic
control box

1

201133090981

10

Fix clamp of
temperature sensor

1

201102000305

23

Remote Controller

1

203355091532

11

Evaporator
assembly

1

201532890153

24

Seal

1

202720090001
12

Fan motor cover

1

201133090980

25

Drain joint

1

201101020011

13

Fixing board of fan
motor

1

201133090167

26

Air freshening filter

1

201131410703

14

Asynchronous
motor

1

202400300064

71

MS11M-24HRDN1-MT0W:

ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST

No.

Part Name

Qty

BOM Code

No.

Part Name

Qty

BOM Code

1

Panel assembly

1

201133090997

17

Cross flow fan

1

201100200057

2

Air filter

2

201133090992

18

Chassis assembly

1

201133090995

3

Display box
assembly

1

203332390972

19

Pipe clamp board

1

201133090989

3.1

Display board
assembly

1

201332391249

20

Installation plate

1

201232990002

4

Cover of indoor
electronic control
box

1

201119900948

21

Electronic control
box assembly

1

203333090465
5

Panel frame
assembly

1

201133090996

21.1

Wire joint

1

202301450119

5.1

Screw cap

4

201119900950

21.2

Electronic control
box

1

201133190200

7

Air outlet assembly

1

201133091008

21.3

Main control board
assembly

1

201333090678

7.1

Louver motor

1

202400200070

21.5

Ambient
temperature sensor
assembly

1

202430790040
8

Drain hose

1

201101020038

21.6

Pipe temperature
sensor assembly

1

202301300426

9

Pipe nut

1

201600330004

21.7

Cover of electronic
control box

1

201133190184

72

9

Pipe nut

1

201600330002

21.10 Fan motor
capacitor

1

202401100354

10

Fix clamp of
temperature sensor

1

201102000305

23

Remote Controller

1

203355091532

11

Evaporator
assembly

1

201533090129

24

Seal

1

202720090001
12

Fan motor cover

1

201133090991

25

Drain joint

1

201101020011

14

Asynchronous
motor

1

202400401301

26

Air freshening filter

1

201131410703

15

Bearing holder

1

201119900952

27

Horizontal louver
(above)

1

201133090993

16

Bearing base

1

202719900606

28

Horizontal louver
(below)

1

201133090999

73

10.2 Outdoor unit

MOC-09HFN1-MW0W:

ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST

No.

Part Name

Qty

BOM Code

No.

Part Name

Qty

BOM Code

1

Ambient
temperature
sensor assembly

1

202301300115

17

Left supporter

1

201237400400
2

Rear net

1

2011374G0003

18

Top cover assembly

1

201237900028

3

Condenser
assembly

1

201537690004

19

Electronic control
box assembly

1

203337390226

4

Pipe temperature
sensor assembly

1

202440500004

20

Terminal board
assembly

1

203337590049

5

Valve plate

1

201237200282

20.1

Wire joint

1

202301400256
6

Chassis assembly

1

201237590091

20.2

Terminal board

1

201237590046

7

Rear right
clapboard

1

201237590080

21

4-Ways valve
assembly

1

201637391606
8

Big handle

1

201237390104

21.1

Gas valve

1

201600720095

9

Water collector

1

201137400000

21.2

4-Ways valve

1

201600690010

10

Air outlet grille

1

201237390105

22

Liquid valve
assembly

1

201637391145
11

Clamp of front net

6

201135110801

22.1

Liquid valve

1

201600740523

12

Front panel

1

201237400392

22.2

Electronic
expansion valve
assembly

1

201601300554

74

13

Axial flow fan

1

201100390002

23

Compressor

1

201400601510
14

Asynchronous
motor

1

202400300060

24

Crankcase electric
heater

1

202403100501

15

Supporter
assembly of fan
motor

1

201237390026

25

Discharge
temperature sensor
assembly

1

202301310068
16

Partition board
assembly

1

201237500259

27

Reactor

1

202301000867

75

MOC-12HFN1-MV0W:

ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST

No.

Part Name

Qty

BOM Code

No.

Part Name

Qty

BOM Code

1

Ambient
temperature sensor
assembly

1

202301300115

17

Left supporter

1

201237400400
2

Rear net

1

2011374G000

3

18

Top cover assembly

1

201237900028

3

Condenser
assembly

1

201537690004

19

Electronic control
box assembly

1

203337590101

4

Pipe temperature
sensor assembly

1

202440500004

20

Terminal board
assembly

1

203337590049

5

Valve plate

1

201237200282

20.1

Wire joint

1

202301400256
6

Chassis assembly

1

201237590091

20.2

Terminal board

1

201237590046

7

Rear right
clapboard
assembly

1

201237590080

21

4-Ways valve
assembly

1

201637591413
8

Big handle

1

201237390104

21.1

Gas valve

1

201600720195

9

Water collector

1

201137400000

21.2

4-Ways valve

1

201600690010

10

Air outlet grille

1

201237390105

22

Liquid valve

assembly

1

201637391145

76

11

Clamp of front net

6

201135110801

22.1

Liquid valve

1

201600740523

12

Front panel

1

201237400392

22.2

Electronic
expansion valve
assembly

1

201601300554
13

Axial flow fan

1

201100390002

23

Compressor

1

201400601510

14

Asynchronous
motor

1

202400300060

24

Crankcase electric
heater

1

202403100501

15

Supporter
assembly of fan
motor

1

201237390026

25

Discharge
temperature sensor
assembly

1

202301310068
16

Partition board
assembly

1

201237500259

27

Reactor

1

202301000867

77

MOF-18HFN1-MU0W:

ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST

No.

Part Name

Qty

BOM Code

No.

Part Name

Qty

BOM Code

1

Ambient
temperature sensor
assembly

1

202301310075

20

Electronic control
box assembly

1

203337890332

2

Rear net

1

2011481G000

1

21

Terminal board
assembly

1

203337990161

3

Condenser
assembly

1

201537890068

21.1

Wire joint

1

202301400256

4

Pipe temperature
sensor assembly

1

202440500004

21.2

Terminal board

1

201237890064

5

Valve plate

1

201237300285

22

Liquid valve
assembly

1

201637891245

6

Chassis assembly

1

201257090054

22.1

Liquid valve

1

201600700078

7

Rear right
clapboard
assembly

1

201237890100

22.2

Electronic
expansion valve
assembly

1

201601300554

8

Big handle

1

201237390104

23

4-way valve
assembly

1

201637891247

9

Water collector

1

201137390017

23.1

Gas valve

1

201600720194

10

Front right
clapboard
assembly

1

201248100389

23.2

4-Ways valve

1

201600690011

11

Front panel

1

201248100390

24

Compressor

1

201400603269

78

12

Air outlet grille

1

201237890112

25

Crankcase
electric heater

1

202403100501

13

Axial flow fan

1

201145500002

26

Discharge
temperature
sensor assembly

1

202301310068

14

Asynchronous
motor

1

202400300033

27

Cover of
inductance

1

201248090001

15

Supporter
assembly of fan
motor

1

201257090031

28

Reactor

1

202301000820

16

Rear supporter

1

201248100384

28

Reactor

1

202301000819

17

Top cover assembly

1

201248100363

30

Clamp of front net

8

201135110801

18

Left supporter

1

201248100367

31

Capacitor of
compressor

1

202401000078

19

Partition board
assembly

1

201237790031

32

Capacitor clip

1

201200100002

79

MOG-24HFN1-MT0W:

ONLY FOR STANDARD BOM, CUSTOMIZED FEATURE MAY CHANGE THE PART LIST

W310-BP-R-001-1

No.

Part Name

Qty

BOM Code

No.

Part Name

Qty

BOM Code

1

Ambient
temperature sensor
assembly

1

202301310075

20.2

Main control
board assembly

1

201338090071

2

Rear net

1

2011482G000

1

20.3

Inverter control
board assembly

1

201357190085

3

Condenser
assembly

1

201538090077

20.4

Installation board
for E-parts

1

201157190010

4

Pipe temperature
sensor assembly

1

202301300111

20.5

Radiator

1

202301901173

5

Valve plate

1

201248300316

20.6

Installation plate
of PCB

1

201295200010

6

Chassis assembly

1

201257190085

21

Terminal board
assembly

1

203338090315

7

Rear right
clapboard
assembly

1

201238090067

21.1

Wire joint

1

202301450155

8

Big handle

1

201237390104

21.2

Terminal board

1

201257190116

9

Water collector

1

201138090002

22

Liquid valve
assembly

1

201638091091

80

10

Front right
clapboard
assembly

1

201248200082

22.1

Liquid valve

1

201600740706

11

Front panel

1

201248200103

22.3

Electronic
expansion valve

1

201601300032

12

Air outlet grille

1

201238090068

23

4-way valve
assembly

1

201638091121

13

Axial flow fan

1

201100300527

23.1

Gas valve

1

201600720398

14

Asynchronous
motor

1

202400300047

23.2

4-Ways valve

1

201600600119

15

Supporter
assembly of fan
motor

1

201257190071

24

Compressor

1

201400601740

16

Rear supporter

1

201248200095

25

Crankcase
electric heater

1

202403101715

17

Top cover assembly

1

201248300309

26

Discharge
temperature
sensor assembly

1

202448200000

18

Left supporter

1

201248400036

27

Cover of
inductance

1

201248390003

19

Partition board
assembly

1

201257190115

28

Reactor

1

202301000943

20

Electronic control
box assembly

1

203338090316

29

Small Handle

2

201148700009

20.1

Cover of electronic
control box

1

201157190011

81

11 Disassembly Instructions

Note: This part is for reference, the photos may have slight difference with your machine.

11.1 Indoor unit

No.

Parts name

Procedures

Remarks

1

Front panel

How to remove the front
panel.

1) Pull the below side of
the panel and release the
clips. Then remove the
front panel.

2) Remove the filter and
horizontal louver.

3) Remove the four
fixing screws.

4) Remove the cover
(one screw).

5) Lift the panel frame
and release the connector
of display ass’y.
connectors. Then remove
the panel frame
assembly.

Overview:

Connector for
display ass’y

Clip

One screw
fixing the cover

Clip
Panel

Filter

Four screws

82

2

Electrical
parts

How to remove the
electrical parts.

1) After remove the
front panel from
procedure 1, pull out the
room temp. sensor and
evaporator coil sensor.
Remove the grounding
screws.

2) Pull out the clip
toward the left side and
open the cover.

3) Remove the fixing
screw and open the
electrical box cover.
.

4) Pull out the
connectors of the swing
motor and fan motor .

5) Remove the fixing
screw and then remove
the electronic control box
and air outlet ass’y.

Fixing screw

Swing motor

Fan motor connector
and swing motor

Clip for electronic
control box cover

Grounding screws

Evaporator coil
temp. sensor

Room temp.
sensor

83

3

Evaporator

How to remove the
evaporator.

1) After remove the front
panel ass’y and electrical
parts following procedure
1 and procedure 2,
remove the pipe holder at
the rear side of the unit.

2) Remove the two
screws on the evaporator
at the base bearing side.

3) Remove two screws
on the evaporator at the
fixed plates and then lift
the evaporator ass’y.

Two screws at the base bearing side

Two
screws at
the fixed
plates

84

4

Fan and
motor

How to remove the fan
and motor.

1) After remove the
evaporator ass’y
following procedure 1,
procedure 2 and
procedure 3, remove the
three screws fixing the
cover

2) Remove the screw
fixing the motor and then
pull out the motor.

Three screws

One screw

85

11.2 Outdoor unit

 MOC-09HFN1-MTOW, MOC-12HFN1-MTOW

No.

Part name

Procedures

Remarks

1

Panel plate

How to remove the panel
plate.

1) Stop operation of the
air conditioner and turn
“OFF” the power breaker.

2) Refer to the right side
photos, find out the fixing
screws of the panels.

3) Remove the screws of
top panel and remove the
top panel.

Screws of
water connector
on right side
plate

Screws of front panel

Screws of top panel

Screws of
front panel

Screw of
top panel

Screws of
big handle
on right
side plate.

Screw of right side plate

86

4) Remove the screws of
the front panel, including
the fixing screws of motor
holder and then remove
the front panel.

5) Remove the screws of
the right side plate and
remove the right side
plate.

Screw of
the top
panel

Screw of
top panel

Screws of right rear plate
Screws of front panel

Screws of the motor holder

87

2

Fan ass’y

How to remove the fan
ass’y.

1) After remove the
panel plate following
procedure 1, remove the
hex nut fixing the fan and
then remove the fan.

2) Unfix the hooks and
then open the electronic
control box cover.

Fan ass’y

Electronic control box

Reactor

Compressor and liquid-gas separator
Nut fixing the fan

88

3) Disconnect the
connector for fan motor
from the electronic control
board.

4) Remove the four
fixing screws of the fan
motor.

5) Then remove the fan
motor.

Fan motor connector

3

Electrical
parts

How to remove the
electrical parts.

1) After finish work of
item 1 and item 2, remove
the three connectors for
the compressor and
electrical heaters.

2) Release the
connector of the reactor.

Reactor connector

Four
screws

Compressor
connector and
electrical heater
connector

89

3) Pull out the two blue
wires connected with the
four way valve.

4) Pull out connectors of
the compressor top temp.
sensor, condenser coil
temp. sensor(T3),outdoor
ambient temp. sensor(T4)
and discharge temp.
sensor(T5).

5) Remove the ground
wires .

6) Remove the power
supply wires(L1,L2,S).

7) Then remove the
electronic control box.

Four connectors of temp. sensors.

Two blue wires of four way valve

90

4

Four-way
valve

How to remove the
four-way valve.

1) Perform work of item
1,2,3.

2) Recover refrigerant
from the refrigerant circuit.

3) Remove the screw of
the coil and then remove
the coil.

4) Detach the welded
parts of four-way valve
and pipe.

5) Then the four-way
valve ass’y can be
removed

The picture of four-way valve may be different from
the one on your side.

5

Compressor

How to remove the
compressor.

1) After perform work of
item1,2,3.

2) Remove the
discharge pipe and suction
pipe with a burner.

3) Remove the hex nuts
and washers fixing the
compressor on bottom
plate.

4) Lift the compressor
from the base pan
assembly.

Discharge
pipe and
suction
pipe

Four-way
valve

Nuts of
compress

Coil of four-way valve, fixing by one screw.

Welded
parts

91

 MOF-18HFN1-MU0W

No.

Part name

Procedures

Remarks

Panel plate

How to remove the panel
plate.

1) Stop operation of
the air conditioner and turn
“OFF” the power breaker.

2) Refer to the right side
photos, find out the fixing
screws of the panels.

3) Remove the screws of
top panel and remove the
top panel.

4) Remove the screws of
the front panel, including
the fixing screws of motor
holder and then remove
the front panel.

Screws of
water connector
on right side
plate

Screws of front panel

Screws of top panel

Screws of
front panel

Screw of
top panel

Screws of
big handle
on right
side plate.

92

5) Remove the screws of
the right side plate and
remove the right side
plate.

Screw of
the top
panel

Screw of
top panel

Screws of right rear plate

Screws of
front panel

Screws of the motor holder

93

2

Fan ass’y

How to remove the fan
ass’y.

1) After remove the panel
plate following procedure
1, remove the hex nut
fixing the fan and then
remove the fan.

2) Remove the one fixing
screw. Unfix the hooks and
then open the electronic
control box cover.

3) Release the fan motor
connector and four way
valve connector.

4) Remove the four
fixing screws of the fan
motor.

5) Then remove the fan
motor.

Compressor and
liquid-gas separator

Electronic control box

Nut fixing the fan

Two reactors
Fan

94

3

Electrical
parts

How to remove the
electrical parts.

1) After finish work of
item 1 and item 2, remove
the two connectors for the
compressor and the
compressor crankcase
heater.

2) Release the three
temp. sensor connectors.

Four screws

Fan motor connector

Four way valve
connector

95

3) Remove the connector
of reactor.

4) Remove the connector
of electronic expansion
valve.

5) Remove the
grounding screw.

6) Remove the power
supply wires(L1,L2,S).

7) Then remove the
electronic control box.

96

4

Four-way
valve

How to remove the
four-way valve.

1) Perform work of
item1,2,3.

2) Recover refrigerant
from the refrigerant circuit.

3) Remove the screw of
the coil and then remove
the coil.

4) Detach the welded
parts of four-way valve
and pipe.

5) Then the four-way
valve ass’y can be
removed

The picture of four-way valve may be different from
the one on your side.

5

Compressor

How to remove the
compressor.

1) After perform work of
item1,2,3.

2) Remove the
discharge pipe and suction
pipe with a burner.

3) Remove the hex nuts
and washers fixing the
compressor on bottom
plate.

4) Lift the compressor
from the base pan
assembly.

Discharge
pipe and
suction
pipe

Four-way
valve

Nuts of
compressor

Coil of four-way valve, fixing by one screw.

Welded
parts

97

 MOG-24HFN1-MT0W

No.

Part name

Procedures

Remarks

1

Panel plate

How to remove the panel
plate.

1) Stop operation of
the air conditioner and turn
“OFF” the power breaker.

2) Refer to the right side
photos, find out the fixing
screws of the panels.

3) Remove the screws of
top panel and remove the
top panel.

4) Remove the screws of
the front panel, including
the fixing screws of motor
holder and then remove
the front panel.

Screws of
water connector
on right side
plate

Screws of front panel

Screws of top panel

Screws of
front panel

Screws of
big handle
on right
side plate.

Screws of the right
side panel

98

5) Remove the screws of
the right side plate and
remove the right side
plate.

Screw of the top panel

Screw of
top panel

Screws of right rear plate

Screws of
front panel

Screws of the motor holder