Hisense AS-09TR4RMEDJ00 User manual

Hisense Corporation
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Version
Hisense Corporation
Version
: 1.0

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MODEL:
AS-09TR4RMEDJ00 AS-09UR4RMEDJ00
AS-12TR4RMEDJ01 AS-12UR4RXEDJ00
AS-24TR4RBBDJ01 AS-24UR4RBBDJ01

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Contents
1. Safety Considerations ............................................................................................................................................................ 4
2. Product Specifications ......................................................................................................................................................... 12
3. Pro duct Picture and Drawing .............................................................................................................................................. 16
3-1. Product Pictures ....................................................................................................................................................... 16
3-2. Product dimensions .................................................................................................................................................. 17
4. Installation Instruction ......................................................................................................................................................... 19
4-1. Installation Place and Condition ............................................................................................................................... 19
4-2. Electric Wiring Diagram ............................................................................................................................................ 22
4-3. Refrigerant Flow System .......................................................................................................................................... 24
4-4. Air Purging and Leakage Test ................................................................................................................................... 25
4-5. Test Running ............................................................................................................................................................. 26
5. Function Operation .............................................................................................................................................................. 27
5-1. Operation Range (cooling and heating） ................................................................................................................. 27
5-2. Remote Controller Operation & Function ................................................................................................................ 28
5-3. Special Function Instruction ..................................................................................................................................... 35
5-4. Performance Data .................................................................................................................................................... 36
6. Electrical Characteristics ...................................................................................................................................................... 38
6-1. Print Circuit Board (Indoor & Outdoor) .................................................................................................................... 38
6-2. Fan Motor ................................................................................................................................................................. 40
6-3. Temperature Sensor ................................................................................................................................................. 42
6-4. Compressor .............................................................................................................................................................. 45
6-5. Electric Reactor......................................................................................................................................................... 45
7.Trouble Shooting ................................................................................................................................................................... 46
7-1. Error Code Table ....................................................................................................................................................... 46
7-2. Test the jumper terminals ........................................................................................................................................ 54
7-3. Trouble Diagnosis of Protection ............................................................................................................................... 54
7-4. Trouble Diagnosis of Compressor ............................................................................................................................ 56
7-5. Trouble Diagnosis of Electric Filter Board ................................................................................................................ 56
7-6. Trouble Diagnosis of Electric Communication.......................................................................................................... 56

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1. Safety Considerations
IMPORTANT!
Please Read Before Starting
This air conditioning system meets strict safety and operating standards. As the installer or service
person, it is animportant part of your job to install or service the system, so it operates safely and
efficiently.
For safe installation and trouble-free operation, youmust:
●Carefully read this instruction booklet before beginning.
●Follow each installation or repair step exactly asshown.
●Observe all local, state, and national electrical codes.
●Pay close attention to all warning and caution noticesgiven in this manual.
This symbol refers to a hazard or unsafe practice whichcan result in severe
personalinjury or death.
This symbol refers to a hazardor unsafe practice which canresult in personal
injury orproduct or property damage.
If Necessary, Get Help
These instructions are all you need for most installationsites and maintenance conditions. If you
require help fora special problem, contact our sales/service outlet oryour certified dealer for
additional instructions.
In Case of Improper Installation
The manufacturer shall in no way be responsible forimproper installation or maintenance service,
includingfailure to follow the instructions in this document.
SPECIAL PRECAUTIONS
When Wiring
ELECTRICAL SHOCK CAN CAUSE SEVERE PERSONAL INJURY OR DEATH. ONLY
AQUALIFIED, EXPERIENCED ELECTRICIAN SHOULD ATTEMPT TO WIRE THISSYSTEM.
●Do not supply power to the unit until all wiring and tubing are completed or reconnected and
checked.
●Highly dangerous electrical voltages are used in thissystem. Carefully refer to the wiring diagram
andthese instructions when wiring. Improper connectionsand inadequate grounding can cause
accidentalinjury or death.
●Ground the unit following local electrical codes.
●Connect all wiring tightly. Loose wiring may causeoverheating at connection points and a possible

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firehazard.
When Transporting
Be careful when picking up and moving the indoor andoutdoor units. Get a partner to help, and bend
yourknees when lifting to reduce strain on your back. Sharpedges or thin aluminum fins on the air
conditioner cancut your fingers.
When Installing
●In a Ceiling or Wall
Make sure the ceiling/wall is strong enough to hold theunit’s weight. It may be necessary to construct
a strongwood or metal frame to provide added support.
●In a Room
Properly insulate any tubing run inside a room to prevent“sweating” that can cause dripping and
water damage towalls and floors.
●In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to providea solid, level foundation for the outdoor unit.
This prevents water damage and abnormal vibration.
●In an Area with High Winds
Securely anchor the outdoor unit down with bolts and ametal frame. Provide a suitable air baffle.
●In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higherthan drifting snow. Provide snow vents.
When Connecting Refrigerant Tubing
△ Use the flare method for connecting tubing.
△Apply refrigerant lubricant to the matching surfaces ofthe flare and union tubes before connecting
them, then tighten the nut with a torque wrench for a leak free connection.
△Check carefully for leaks before starting the test run.
When Servicing
△ Turn the power OFF at the main power box (mains)before opening the unit to check or repair
electrical parts and wiring.
△Keep your fingers and clothing away from any movingparts.
△Clean up the site after you finish, remembering tocheck that no metal scraps or bits of wiring have
been left inside the unit being serviced.
Others
△ Ventilate any enclosed areas when installing or testingthe refrigeration system. Escaped
refrigerant gas, oncontact with fire or heat, can produce dangerouslytoxic gas.
△ Confirm upon completing installation that no refrigerant gas is leaking. If escaped gas comes in
contactwith a stove, gas water heater, electric room heater orother heat source, it can produce
dangerously toxicgas.
NOTE:
The figure 、 size and parameter of the product may not be identical with the service manual, please
take the actual product as the standard.
Precautions for using R32 refrigerant
The basic installation work procedures are the same as the conventional refrigerant
(R22 or R410A). However, pay attention to the following points:
1. Transport of equipment containing flammable refrigerantsCompliance with the transport

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regulations
2. Marking of equipment using signs Compliance with local regulations
3. Disposal of equipment using flammable refrigerants Compliance with national regulations
4. Storage of equipment/appliances The storage of equipment should be in accordance with the
manufacturer's instructions.
5. Storage of packed (unsold) equipment Storage package protection should be constructed such
that mechanical damage to the equipment inside the package will not cause a leak of the
refrigerant charge.
The maximum number of pieces of equipment permitted to be stored together will be
determined by local regulations.
6. Information on servicing
6-1 Checks to the area
Prior to beginning work on systems containing flammable refrigerants, safety checks are
necessary to ensure that the risk of ignition is minimized. For repair to the refrigerating system, the
following precautions shall be complied with prior to conducting work on the system.
6-2 Work procedure
Work shall be undertaken under a controlled procedure so as to minimize the risk of flammable
gas or vapor being present while the work is being performed.
6-3 General work area
All maintenance staff and others working in the local area shall be instructed on the nature of
work being carried out. Work in confined spaces shall be avoided.
The area around the workspace shall be sectioned off. Ensure that the conditions within the
area have been made safe by control of flammablematerial.
6-4 Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to and during work, to
ensure the technician is aware of potentially flammableatmospheres.
Ensure that the leak detection equipment being used is suitable for use with flammable
refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe.
6-5 Presence of fire extinguisher
If any hot work is to be conducted on the refrigeration equipment or any associated parts,
appropriate fire extinguishing equipment shall be availableto hand.
Have a dry powder or CO2 fire extinguisher adjacent to the charging area.
6-6 No ignition sources
No person carrying out work in relation to a refrigeration system which involves exposing any
pipe work that contains or has contained flammable refrigerant shall use any sources of ignition in
such a manner that it may lead to the risk of fire or explosion.
All possible ignition sources, including cigarette smoking, should be kept sufficiently far away
from the site of installation, repairing, removing and disposal, during which flammable refrigerant
can possibly be released to the surrounding space.
Prior to work taking place, the area around the equipment is to be surveyed to make sure that
there are no flammable hazards or ignition risks. “No Smoking” signs shall be displayed.
6-7 Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before breaking into the
system or conducting any hot work.
A degree of ventilation shall continue during the period that the work is carried out.
The ventilation should safely disperse any released refrigerant and preferably expel it externally
into the atmosphere.
6-8 Checks to the refrigeration equipment

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Where electrical components are being changed, they shall be fit for the purpose and to the
correct specification.
At all times the manufacturer's maintenance and service guidelines shall be followed. If in doubt
consult the manufacturer's technical department for assistance.
The following checks shall be applied to installations using flammable refrigerants:
– The charge size is in accordance with the room size within which the refrigerant containing parts
are installed;
– The ventilation machinery and outlets are operating adequately and are not obstructed;
– If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the
presence of refrigerant;
– Marking to the equipment continues to be visible and legible. Markings and signs that are
illegible shall be corrected;
– Refrigeration pipe or components are installed in a position where they are unlikely to be
exposed to any substance which may corrode refrigerant containing components, unless the
components are constructed of materials which are inherently resistant to being corroded or are
suitably protected against being so corroded.
6-9 Checks to electrical devices
Repair and maintenance to electrical components shall include initial safety checks and
component inspection procedures.
If a fault exists that could compromise safety, then no electrical supply shall be connected to the
circuit until it is satisfactorily dealt with.
If the fault cannot be corrected immediately but it is necessary to continue operation, an
adequate temporary solution shall be used.
This shall be reported to the owner of the equipment so all parties are advised. Initial safety
checks shall include:
– That capacitors are discharged: this shall be done in a safe manner to avoid possibility of
sparking;
– That there no live electrical components and wiring are exposed while charging, recovering or
purging the system;
– That there is continuity of earth bonding.
7. Repairs to sealed components
During repairs to sealed components, all electrical supplies shall be disconnected from the
equipment being worked upon prior to any removal of sealed covers, etc.
If it is absolutely necessary to have an electrical supply to equipment during servicing, then a
permanently operating form of leak detection shall be located at the most critical point to warn of a
potentially hazardous situation.
Particular attention shall be paid to the following to ensure that by working on electrical
components, the casing is not altered in such a way that the level of protection is affected.
This shall include damage to cables, excessive number of connections, terminals not made to
original specification, damage to seals, incorrect fitting of glands, etc.
Ensure that apparatus is mounted securely.
Ensure that seals or sealing materials have not degraded such that they no longer serve the
purpose of preventing the ingress of flammable atmospheres.
Replacement parts shall be in accordance with the manufacturer'sspecifications.
NOTE:
The use of silicon sealant may inhibit the effectiveness of some types of leak detection
equipment. Intrinsically safe components do not have to be isolated prior to working on them.

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8. Repair to intrinsically safe components
Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that
this will not exceed the permissible voltage and current permitted for the equipment in use.
Intrinsically safe components are the only types that can be worked on while live in the
presence of a flammable atmosphere. The test apparatus shall be at the correct rating.
Replace components only with parts specified by the manufacturer.
Other parts may result in the ignition of refrigerant in the atmosphere from a leak.
9. Cabling
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp
edges or any other adverse environmental effects.
The check shall also take into account the effects of aging or continual vibration from sources
such as compressors or fans.
10.Detection of flammable refrigerants
Under no circumstances shall potential sources of ignition be used in the searching for or
detection of refrigerant leaks.
A halide torch (or any other detector using a naked flame) shall not be used.
11.Leak detection methods
The following leak detection methods are deemed acceptable for systems containing flammable
refrigerants:
– Electronic leak detectors shall be used to detect flammable refrigerants, but the sensitivity may
not be adequate, or may need re-calibration. (Detectionequipment shall be calibrated in a
refrigerant-free area.)
– Ensure that the detector is not a potential source of ignition and is suitable for the refrigerant
used.
– Leak detection equipment shall be set at a percentage of the LFL of the refrigerant and shall be
calibrated to the refrigerant employed and the appropriate percentage of gas (25 % maximum) is
confirmed.
– Leak detection fluids are suitable for use with most refrigerants but the use of detergents
containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the
copper pipe-work.
– If a leak is suspected, all naked flames shall be removed/ extinguished.
– If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be
recovered from the system, or isolated (by means of shut off valves) in a part of the system remote
from the leak.
– Oxygen free nitrogen (OFN) shall then be purged through the system both before and during the
brazing process.
12.Removal and evacuation
When breaking into the refrigerant circuit to make repairs – or for any other purpose –
conventional procedures shall be used.
However, it is important that best practice is followed since flammability is a consideration.
The following procedure shall be adhered to:
– Remove refrigerant;
– Purge the circuit with inert gas;
– Evacuate;
– Purge again with inert gas;
– Open the circuit by cutting or brazing.
The refrigerant charge shall be recovered into the correct recovery cylinders.
The system shall be “flushed” with OFN to render the unit safe.

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This process may need to be repeated several times.
Compressed air or oxygen shall not be used for this task.
Flushing shall be achieved by breaking the vacuum in the system with OFN and continuing to fill
until the working pressure is achieved, then venting to
atmosphere, and finally pulling down to a vacuum.
This process shall be repeated until no refrigerant is within the system. When the final OFN
charge is used, the system shall be vented down to atmospheric
pressure to enable work to take place.
This operation is absolutely vital if brazing operations on the pipe-work are to take place.
Ensure that the outlet for the vacuum pump is not close to any ignition sources and there is
ventilation available.
13.Charging procedures
In addition to conventional charging procedures, the following requirements shall be followed:
– Ensure that contamination of different refrigerants does not occur whenusing charging
equipment.
– Hoses or lines shall be as short as possible to minimise the amount ofrefrigerant contained in
them.
– Cylinders shall be kept upright.
– Ensure that the refrigeration system is earthed prior to charging the system with refrigerant.
– Label the system when charging is complete (if not already).
– Extreme care shall be taken not to overfill the refrigeration system.
Prior to recharging the system it shall be pressure tested with OFN.
The system shall be leak tested on completion of charging but prior to commissioning.
A follow up leak test shall be carried out prior to leaving the site.
14.Decommissioning
Before carrying out this procedure, it is essential that the technician is completely familiar with
the equipment and all its detail.
It is recommended good practice that all refrigerants are recovered safely.
Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis
is required prior to re-use of reclaimed refrigerant. It is essential
that electrical power is available before the task is commenced.
a) Become familiar with the equipment and its operation.
b) Isolate system electrically.
c) Before attempting the procedure ensure that:
– Mechanical handling equipment is available, if required, for handling refrigerant cylinders;
– All personal protective equipment is available and being used correctly;
– The recovery process is supervised at all times by a competent person;
– Recovery equipment and cylinders conform to the appropriate standards.
d) Pump down refrigerant system, if possible.
e) If a vacuum is not possible, make a manifold so that refrigerant can be removed from various
parts of the system.
f) Make sure that cylinder is situated on the scales before recovery takes place.
g) Start the recovery machine and operate in accordance with manufacturer's
instructions.
h) Do not overfill cylinders. (No more than 80 % volume liquid charge).
I ) Do not exceed the maximum working pressure of the cylinder, even temporarily.
j ) When the cylinders have been filled correctly and the process completed, make sure that the
cylinders and the equipment are removed from site promptly and all isolation valves on the

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equipment are closed off.
k) Recovered refrigerant shall not be charged into another refrigeration system unless it has
been cleaned and checked.
15.Labelling
Equipment shall be labelled stating that it has been de-commissioned and emptied of
refrigerant.
The label shall be dated and signed.
Ensure that there are labels on the equipment stating the equipment contains flammable
refrigerant.
16.Recovery
When removing refrigerant from a system, either for servicing or decommissioning, it is
recommended good practice that all refrigerants are removed safely.
When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery
cylinders are employed.
Ensure that the correct number of cylinders for holding the total system charge is available.
All cylinders to be used are designated for the recovered refrigerant and labelled for that
refrigerant (i.e. special cylinders for the recovery of refrigerant).
Cylinders shall be complete with pressure relief valve and associated shut-off valves in good
working order.
Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs.
The recovery equipment shall be in good working order with a set ofinstructions concerning the
equipment that is at hand and shall be suitable for the recovery of flammable refrigerants.
In addition, a set of calibrated weighing scales shall be available and in good working order.
Hoses shall be complete with leak-free disconnect couplings and in good condition.
Before using the recovery machine, check that it is in satisfactory working order, has been
properly maintained and that any associated electrical components are sealed to prevent ignition in
the event of a refrigerant release.
Consult manufacturer if in doubt.
The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery
cylinder, and the relevant Waste Transfer Note arranged.
Do not mix refrigerants in recovery units and especially not in cylinders.
If compressors or compressor oils are to be removed, ensure that they have been evacuated to
an acceptable level to make certain that flammable refrigerant does not remain within the lubricant.
The evacuation process shall be carried out prior to returning the compressor to the suppliers.
Only electric heating to the compressor body shall be employed to accelerate this process.
When oil is drained from a system, it shall be carried out safely.
When moving or relocating the air conditioner, consult experienced service technicians for
disconnection and reinstallation of the unit.
Do not place any other electrical products or household belongings under indoor unit or outdoor
unit. Condensation dripping from the unit might get themwet, and may cause damage or malfunction
of your property.
Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer.
The appliance shall be stored in a room without continuously operating ignition sources(for
example, open flames, an operating gas appliance or an operatingelectric heater).
Do not pierce or burn.
Be aware that refrigerants may not contain an odor.
To keep ventilation openings clear of obstruction.