Sinclair MS-E36AI User manual

USER'S MANUAL
MULTI SYSTEM SERIES
outdoor unit
MS-E36AI, MS-E42AI
EN

I
User Notice
The total capacity of the indoor units which runs at the same time can not exceed
150% of that of the outdoor units, otherwise, the cooling (heating) effect of each
indoor unit would be poor.
Switch the main power on 8 hours before starting the unit, helpful for a successful
startup.
It is a normal phenomenon that the indoor unit fan will still run for 20~70 seconds
after the indoor unit receives the “stop” signal so as to make full use of after-heat
for the next operation.
When the running modes of the indoor and outdoor units conflict, it will be
indicated on the display of the wired controller in five seconds and then the indoor
unit will stop. In this case, they can back to the normal condition by harmonizing
their running modes: the cooling mode is compatible with the dehumidifying mode
and the fan mode can go with any other mode. If the supply power fails when the
unit is running, then the indoor unit will send the “start” signal to the outdoor unit
three minutes later after power recovery.
Do not frequently power on/off the unit, otherwise it would cause the compressor,
fan, mainboard, electrostatic expansion valve, or other important component
damaged, and then make the unit fail.
During installation, the communication cable and the power cord must not be
twisted together but instead separated with an interval of at least 2cm, otherwise
the unit is likely to run abnormally.
Cautions for the Debugging and Maintenance Personnel.
During debugging and maintenance, prior to the startup of the compressor make
sure the heating belt of the compressor has been energized for at least eight
hours! Once the compressor is started, it must be guaranteed that it works
continuously for at least 30 minutes, otherwise it would be damaged!
This appliance can be used by children aged from 8 years and above and persons
with reduced physical, sensory or mental capabilities or lack of experience and
knowledge if they have been given supervision or instruction concerning use of
the appliance in a safe way and understand the hazards involved. Children shall
not play with the appliance. Cleaning and user maintenance shall not be made by
children without supervision.

II
The appliance shall be installed in accordance with national wiring regulations.
If the supply cord is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.
This series outdoor Multi system series thewithmatchedunits are
conditons
working
sametheunderunitindoor
exported to European Union.
Correct Disposal of this product
This marking indicates that this product should not be disposed
with other household wastes throughout the EU. To prevent possible
harm to the environment or human health from uncontrolled waste
disposal, recycle it responsibly to promote the sustainable reuse of
material resources. To return your used device, please use the return
and collection systems or contact the retailer where the product was
purchased. They can take this product for environmental safe recycling.
R410A(R32/125:50/50):2087.5

Contents
1 Safety Precautions................................................................... 1
2 Installation Instructions ............................................................ 2
2.1 Installation Location and Matters Needing Attention...................2
2.2 Installation of the Outdoor Unit...................................................6
2.3 Connection between Indoor and Outdoor Units..........................8
2.4 Refrigerant Charging and Trial Running................................... 11
3 Working Principles of the Unit................................................ 15
4 Parts and Components of the Unit......................................... 16
5 Maintenance.......................................................................... 17
5.1 Check before the Seasonal Use...............................................17
5.2 Check after the Seasonal Use..................................................17
6 Troubleshooting..................................................................... 18
6.1 Check before Contacting Service Center .................................18
6.2 Problem Handling ....................................................................19
6.3 Error Description......................................................................19
6.4 After-Sales Service...................................................................26
7 Function Description.............................................................. 26
8 Performance Parameters....................................................... 27

1
1 Safety Precautions
Please read this manual carefully before using and operating correctly as
instructed in this manual.
Please especially take notice of the following two symbols：
Warning! It indicates improper operation which will lead to human casualty or
severe injury.
Caution! It indicates improper operation which will lead to injury or property
damage.
Warning!
The installation should be committed to the appointed service center,
otherwise it will cause water leakage, electric shock or fire etc..
Please install the unit in a place where is strong enough to withstand the
weight of the unit, otherwise, the unit would fall down and cause injury or
death.
The drain pipe should be installed as instructed in the manual to guarantee the
proper drainage, meanwhile it should be insulated to prevent condensing,
otherwise the improper installation would cause water leakage and then wet
the household wares in the room.
Do not use or place any inflammable, combustible or any noxious substance
next to the unit.
Under the occurrence of an error (like burning smell etc.), please cut off the
main power supply of the unit.
Keep good ventilation in the room to avoid oxygen deficit.
Never insert your finger or any other object into the air outlet/inlet grille.
Please take notice of the supporting frame of the unit to see if it is damaged
over the long time period of use.
Never refit the unit and contact the sales agent or the professional installation
personnel for the repair or relocation of the unit.
Non-professional personnel are prohibited to dismantle the electric box owing
to the high voltage of the outdoor unit.
An all-pole disconnection switch having a contact separation of at least 3mm
in all poles should be connected in fixed wiring.

2
Caution!
Before installation, please check if the power supply corresponds with the
requirement specified on the nameplate and also check its security.
Before using the unit, please check if the piping and wiring are correct to avoid
water leakage, refrigerant leakage, electric shock, or fire etc..
The main power supply must be earthed to avoid the hazard of electric shock
and never connect this earth wire to the gas pipe, running water pipe,
lightening rod or phone cable’s earth lead.
Turn off the unit after it runs at least five minutes, otherwise its service life will
be shortened.
Do not allow children operate this unit.
Do not operate this unit with wet hands.
Cut off the main power supply prior to the cleaning of the unit or the
replacement of the air filter.
When the unit is not to be used for a long time, please cut off the main power
supply of the unit.
Do not expose the unit to the moist or corrosive circumstances.
Never step on the unit or place any object on it.
It is suggested to have a power-on test annually.
2 Installation Instructions
2.1 Installation Location and Matters NeedingAttention
The installation of the unit must comply with the national and local safety
regulations. The installation quality directly affects the normal use, so the user should
not carry out the installation personally, instead, the installation and debugging should
be done by technician according to this manual. Only after that, can the unit be
energized.
(1) How to select the installation location for the indoor unit
1) Where there is no direct sunlight.
2) Where the top hanger, ceiling and the building structure are strong enough to
withstand the weight of the unit.
3) Where the drain pipe can be easily connected to outside.
4) Where the flow of the air inlet/outlet is not blocked.
5) Where the refrigerant pipe of the indoor unit can be easily led to outside.
6) Where there is no inflammable, explosive substances or their leakage.

3
7) Where there is no corrosive gas, heavy dust, salt mist, smog or moisture.
(2) How to select the installation location for the outdoor unit
1) The outdoor unit must be installed where the bearing surface is stable and
secure enough.
2) The outdoor unit and indoor unit should be placed as close as possible to
minimize the length and bends of the refrigerant pipe.
3) Do not install the outdoor unit under the window or between the buildings to
prevent the normal running noise entering the room.
4) Where the flow of the air inlet/outlet is not blocked.
5) The outdoor unit should be installed where ventilation is in good condition so
that the unit can take in and discharge enough air.
6) Do not install the unit where there are inflammable and explosive substances
and where there is heavy dust, salt fog and other severely polluted air.
No air guiding pipe is allowed to be installed at the air inlet/outlet of the outdoor unit.
Under the heating mode, the condensate water would drip down from the base frame
and would be frozen when the outdoor ambient temperature is lower than 0℃(32℉).
Besides, the installation of the outdoor unit should not affect the heat radiation of the
unit.
CAUTION!
The unit installed in the following places is likely to run abnormally. If unavoidable,
please contact the professional personnel at the Sinclair appointed service center.
Where is full of oil.
Alkaline soil off the sea.
Where there is sulfur gas (like sulfur hot spring).
Where there are devices with high frequency (like wireless devices, electric
welding devices, or medical equipments).
Special circumstances.
(3) Electric Wiring
1) The installation must be done in accordance with the national wiring
regulations.
2) Only the power cord with the rated voltage and exclusive circuit for the air
conditioning can be used.
3) Do not pull the power cord by force.
4) The electric installation should be carried out by the professional personnel as
instructed by the local laws, regulations and also this manual.
5) The diameter of the power cord should be large enough and once it is

4
damaged it must be replaced by the dedicated one.
6) The earthing should be reliable and the earth wire should be connected to the
dedicated device of the building by the professional personnel. Besides, the
air switch coupled with the leakage current protection switch must be
equipped, which is of enough capacity and of both magnetic and thermal
tripping functions in case of the short circuit and overload.
Table 1
Models Power Supply Capacity of the Air Switch Recommended Cord
（pieces×sectional area）
MS-E36AI 220-240V~ 50Hz 32A 4mm2×3
MS-E42AI 220-240V~ 50Hz 32A 4mm2×3
Notes:
①.The specifications of the breaker and power cable listed in the table above are
determined based on the maximum power (maximum amps) of the unit.
②.The specifications of the power cable listed in the table above are applied to
the conduit-guarded multi-wire copper cable (like, YJV copper cable,
consisting of PE insulated wires and a PVC cable jacket) used at 40°С and
resistible to 90°С (see IEC 60364-5-52). If the working condition changes,
they should be modified according to the related national standard.
③.The specifications of the breaker listed in the table above are applied to the
breaker with the working temperature at 40°С. If the working condition
changes, they should be modified according to the related national standard.
(4) Earthing Requirements
1) The air conditioner is classified into the Class I appliances, so its earthing
must be reliable.
2) The yellow-green line of the air conditioner is the earth line and can not be
used for other purpose, cut off or fixed by the tapping screw, otherwise it
would cause the hazard of electric shock.
3) The reliable earth terminal should be provided and the earth wire can not be
connected to any of the following places.
a) Running water pipe.
b) Coal gas pipe.
c) Sewage pipe.
d) Other places where the professional personnel think unreliable.

5
MS-E36AI
Fig.1
MS-E42AI
Fig.2
(5) Noise Precautions
1) The air conditioning unit should be installed where ventilation is in good
condition, otherwise the working capability of the unit would be reduced or
working noise would be increased.
2) The air conditioning unit should be installed on the base frame which is stable
and secure uncouth to withstand the weight of the unit, otherwise it would
incur vibration and noise.

6
3) During the installation, a consideration should be taken that the produced hot
air or noise should not affect neighbors or surroundings.
4) Do not stack obstacles near the air outlet of the outdoor unit, otherwise it
would reduce the working capability of the unit or increase the working noise.
5) In the event of the occurrence of abnormal noise, please contact the sales
agent as soon as possible.
(6) Accessories for Installation
Refer to the packing list for the accessories of the indoor and outdoor units
respectively.
2.2 Installation of the Outdoor Unit
(1) Precautions for the Installation of the Outdoor Unit
The following rules should be followed when the installation location is being
considered so as to let the unit run well enough.
1) The discharged air from the outdoor unit won’t return back and enough space
should be left for maintenance around the unit.
2) The installation location should be in good condition so that the unit is able to
take in and discharge enough air. Besides, make sure there is no obstacle at
the air inlet/outlet of the unit. If there is, remove it.
3) The unit must be installed where it is secure enough to support the weight of
the unit and capable of reducing to some extent noise and vibration to make
sure they do not bother your neighbors.
4) The designated lifting hole must be used for lifting the unit and protect the unit
carefully during lifting to prevent damaging the mental sheet which would
result in rusting in future.
5) The unit should be installed where there is as little as direct sunlight.
6) The unit must be installed where the rain water and defrosting water can be
drained.
7) The unit must be installed where the unit won’t be covered by the snow and
won’t be affected by rubbish and oil fog.
8) Rubber or spring shock absorbers should be used during the installation of the
outdoor unit to meet the noise and vibration requirements.
9) The installation dimensions should meet the requirement covered in this
manual and the outdoor unit must be fixed securely.
10)The installation should be carried out by the professionally skilled personnel.

7
(2) Installation of the Outdoor Unit
1) Outline dimension of the outdoor unit.
MS-E36AI
Fig.4
MS-E42AI
Fig.5
2) During the transportation of the outdoor unit, two lifting ropes long enough
must be used in four directions and the separation included angle must be
less than 40°prevent the center of unit deviating.
3) During the installation, M12 screws should be used to fix the support leg and
base frame of the unit.
4) The unit should be installed on a concrete base frame with a height of 10cm.
5) The installation space of the unit should be as required in Fig.6.
Installation Space Requirements of the Outdoor Unit:

8
Fig.6
2.3 Connection between Indoor and Outdoor Units
(1) Wiring of the Power Cord
CAUTION!
A breaker must be installed, capable of cutting off the power supply for the whole
system.
1) Open the side plate.
2) Let the power cord go through the rubber ring.
3) Connect the power card to the terminals “L”, “N” and also the earthing bolt,
and then connect the wiring terminals “N(1),2,3” of the indoor unit to those of
the outdoor unit correspondingly.
4) Fix the power cord with wire clips.
(2) Energy Level and Capacity Code of the Indoor and Outdoor Units
Table2
Energy Level Capacity Code
Indoor Unit
09 25
12 35
18 50
21 60
24 71
Outdoor Unit 36 100
42 120
1) The outdoor unit with capacity level 36 can drive up to four sets of indoor units,
while the outdoor unit 42 can drive up to five.
2) The sum of the capacity codes of the indoor units should be among
50%-150% of that of the outdoor unit.

MS-E36AI MS-E42AI
m70 80
m20 25
Outdoor unit is installed under the
lower side of indoor unit m15 15
Outdoor unit is installed on the upper
side of indoor unit m15 15
g/m
40 50
Refrigerant charge volume 22
Model
Max. connection pipe length
Max. connection pipe length (One indoor unit)
Max. installation altitude
Max. connection pipe length (Under the condition of no need to
charge the refrigerant, liquid pipe total length) m

9
(3) Allowable Length and Height Fall of the Refrigerant Pipe
Table 3
Allowable Length Refrigerant Pipe
36 42 36 42
Total Length(m) 70 80 L1+L2+L3+ L4 L1+L2+L3+ L4+ L5
Max. Length for Single Unit(m) 20 25 LX
Max.
installation
altitude
Outdoor unit and
indoor unit 15 15 H1
Indoor unit and
indoor unit 7.5 7.5 H2
Table 4 Dimension of the Refrigerant Pipe of the Indoor Unit
Unit: mm
Capacity Level of the Indoor Unit Gas Pipe Liquid Pipe
09,12 Ф9.52 Ф6.35
18 Ф12.7 Ф6.35
21,24 Ф15.9 Ф9.52
(4) Piping between the Indoor and Outdoor Units
1) Refer to Fig.6 for the moments of torque for tightening screws.
2) Let the flare end of the copper pipe point at the screw and then tighten the
screw by hand.
3) After that, tighten the screw by the torque wrench unit it clatters (as shown in
Fig.6).
4) The bending degree of the pipe can not be too small, otherwise it will crack.
And please use a pipe tube bender to bend the pipe.
5) Wrap the exposed refrigerant pipe and the joints by sponge and then tighten
them with the plastic tape.
Fig. 7

10
Table 5 Moments of Torque for Tightening Screws
Diameter Wall Thickness（mm）Moment of Torque
Ф6.35mm ≥0.5 15-30(N·m)
Ф9.52mm ≥0.71 30-40(N·m)
Ф12.7mm ≥1 45-50(N·m)
Ф15.9mm ≥1 60-65(N·m)
CAUTION!
①.During the connection of the indoor unit and the refrigerant pipe, never pull
any joints of the indoor unit by force, otherwise the capillary pipe or other pipe
may crack, which then would result in leakage.
②.The refrigerant pipe should be supported by brackets, that is, don’t let the unit
withstand the weight of it.
CAUTION!
For the Multi system air conditioner unit, each pipe should be labeled to tell which
system it belongs to avoid mistaken inaccurate piping.
(5) Installation of the Protection Layer of the Refrigerant Pipe
1) The refrigerant pipe should be insulated by the insulating material and plastic
tape in order to prevent condensation and water leakage.
2) The joints of the indoor unit should be wrapped with the insulating material
and no gap is allowed on the joint of the indoor unit, as shown in Fig.8.
Fig. 8
CAUTION!
After the pipe is protected well enough, never bend it to form a small angle,
otherwise it would crack or break.
(6) Wrap the Pipe with Tape
1) Bundle the refrigerant pipe and electric wire together with tape, and separate
them from the drain pipe to prevent the condensate water overflowing.
2) Wrap the pipe from the bottom of the outdoor unit to the top of the pipe where

11
it enters the wall. During the wrapping, the later circle should cover half of the
former one.
3) Fix the wrapped pipe on the wall with clamps.
CAUTION!
①.Do not wrap the pipe too tightly, otherwise the insulation effect would be
weakened. Additionally, make sure the drain hose is separated from the pipe.
②.After that, fill the hole on the wall with sealing material to prevent wind and rain
coming into the room.
2.4 Refrigerant Charging and Trial Running
(1) Refrigerant Charging
1) The refrigerant has been charged into the outdoor unit before shipment, while
additional refrigerant still need be charged into the refrigerant pipe during the
field installation.
2) Check if the liquid valve and the gas valve of the outdoor unit are closed fully.
3) As shown in the following figure (Fig.9), expel the gas inside the indoor unit
and refrigerant pipe out by the vacuum pump.
Fig. 9
4) When the compressor is not running, charge the R410A refrigerant into the
refrigerant pipe from the liquid valve of the outdoor unit (do not do it from the
gas valve).
(2) Calculation of the Additional Refrigerant Chargeing
1) Refrigerant Charge in the Outdoor Unit before Shipment
Table 6
Model
MS-E36AI
MS-E42AI
Refrigerant
Charge (kg)
4.3
4,8

12
Notes：
①.The refrigerant charge mentioned in the table above is not included those
charged additionally in the indoor unit and the refrigerant pipe.
②.The amount of the additional refrigerant charge is dependent on the diameter
and length of the liquid refrigerant pipe which is decided by the actual yield
installation requirement.
③.Record the additional refrigerant charge for future maintenance.
2) Calculation of the Additional Refrigerant Charge
If the total refrigerant pipe length (liquid pipe) is smaller than that listed in the table
below, no additional refrigerant will be charged.
Table 7
Model Total Liquid Pipe Length (a+b+c+d+e)
MS-E36AI ≤40m
MS-E42AI ≤
50m
pipeLength×22g/m(liquidPipeLiquidCharge2=∑ExtraRefrigerantAdditional
1/4").
Note:
If the total refrigerant pipe length is larger than that listed in the table above, the
additional refrigerant for the extra length of the pipe needs to be charged as per 22g/m.
3) Example : MS-E42AI
Fig.10
Table 8 Indoor Unit
Serial No. Model
Indoor Unit⑤Ducted Type MS-D09AI
Indoor Unit④Ducted Type MS-D09AI
Indoor Unit③Ducted Type MS-D09AI
Indoor Unit②Ducted Type MS-D09AI
Indoor Unit①Ducted Type MS-D18AI

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Table 9 Liquid Refrigerant Pipe
Serial No. e d c b a
Diameter Ф6.35 Ф6.35 Ф6.35 Ф6.35 Ф9.52
Length 20m 20m 15m 5m 5m
The total length of each liquid refrigerant pipe is: e+d+c+b+a=20+20+15+5+5=65m.
Thus, the minimum additional refrigerant charge=(65-50)×0.022=0.33kg (Note: no
additional refrigerant is needed for the liquid pipe within 50m).
4) Additional Refrigerant Charge Record
Table 10 Indoor Unit
No. Indoor Unit Model Additional Refrigerant Charge(kg)
1
2
……
N
Total
Table 11 Refrigerant Pipe
Diameter Total Length(m) Additional Refrigerant Charge(kg)
Φ15.9
Φ12.7
Φ9.52
Φ6.35
Total
(3) Items to be checked after the Installation
Table 12
Items to be Checked Possible Errors Check Results
Has each part and component of the unit
been installed securely? The unit may fall off, vibrate or generate noise.
Has the gas leakage test been taken? The cooling (heating) capacity may be
poor.
Is the thermal insulation sufficient? Dews and water drops may be generated.
Does the drainage go well? Dews and water drops may be generated.
Is the actual power voltage in line with
the value marked on the nameplate? The unit may break down or some components may be burnt out.

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Are the wiring and the piping correct? The unit may break down or some
components may be burnt out.
Has the unit been earthed reliably? There may be a danger of electric shock.
Does the wire meet the regulated
requirement? The unit may break down or the component may be burnt out.
Is there any obstacle at the air
inlet/outlet
of the indoor/outdoor unit?
The cooling (heating) capacity may be
poor.
Have the length of the refrigerant pipe
and the refrigerant charge been
recorded?
It may be hard to know the exact
refrigerant charge.
(4) Trial Running
1) Check before the Trial Running
a) Check if the appearance of the unit and the piping system are damaged
during the transportation.
b) Check if the wiring terminals of the electronic component are secure.
c) heck if the rotation direction of the fan motor is right.
d) Check if all valves in the system are fully opened.
2) Trial Running
a) The trial running should be carried out by the professionally skilled
personnel on the premise that all items listed above are in normal
conditions.
b) Let the unit energized and switch the wired controller or the remoter
controller to “ON”.
c) The fan motor and compressor of the outdoor unit will run automatically in
one minute.
d) If there is some unusual sound after the compressor is started, turn off the
unit for an immediate check.

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3 Working Principles of the Unit
Schematic Diagram of Multi system series Inverter Heat Pump
Fig. 11 Schematic Diagram of Multi system Series Inverter Heat Pump
The outdoor and indoor units start to work once the power is switched on. During
the cooling operation, the low temperature, low pressure refrigerant gas from the heat
exchanger of each indoor unit gets together and then is taken into the compressor to be
compressed into high temperature, high pressure gas, which will soon go to the heat
exchanger of the outdoor unit to exchange heat with the outdoor air and then is turned
into refrigerant liquid. After passing through the throttling device, the temperature and
pressure of the refrigerant liquid will further decrease and then go the main valve. After
that, it will be divided and go to the heat exchanger of each indoor unit to exchange
heat with the air which needs to be conditioned. Consequently, the refrigerant liquid
become low temperature, low pressure refrigerant gas again. Such a refrigeration cycle
goes round and round to achieve the desired cooling purpose. During the heating
operation, the four-way valve is involved to make the refrigeration cycle run reversely.