Haier MVAL009MV2AA User manual

Indoor Unit Operation & Installation Manual
MVAL009MV2AA
MVAL012MV2AA
MVAL018MV2AA
MVAL024MV2AA
MVAL030MV2AA
MVAL036MV2AA
MVAL042MV2AA
MVAL048MV2AA
No. 0150524546
• Please read this manual carefully before using.
• Keep this operation manual for future reference.
Original instructions

Contents
Parts and Functions...........................................................................................................................................................1
Safety ................................................................................................................................................................................2
Maintenance......................................................................................................................................................................4
Fault Checkup ...................................................................................................................................................................6
Installation Procedures......................................................................................................................................................7
Electrical Wiring...............................................................................................................................................................12
Test Run & Fault Code ....................................................................................................................................................17
Your air conditioner may be subject to any change owing to the improvement of Haier products.
MRV series multiple air conditioning systems adopt the consistent running mode, by which, all indoor units can only be
heating or refrigerating operation at the same time.
To protect the compressor, the air conditioning unit should be powered on for over 12 hours before using it.
All indoor units of the same refrigerating system should use the unied power switch to ensure that all indoor units are in
the state of being powered on at the same time during the operation of air conditioner.
Product Features:
1.Hanging-style installation to save space;
2.Automatic display of faults;
3.Central control function; (optional from our company).
4.If there is a power outage while the system is operating, the system will resume the last mode and settings it was set to
run in.
5.This indoor unit ships with wireless controller. It is compatible with both YR-E17 and YR-E16 wired controllers.
User Manual
Warning
• If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualied persons
in order to avoid a hazard.
• This equipment should not be used or serviced by personnel who have not been properly trained in its operation and
maintenance.
• Children should be supervised to ensure that they do not play with the appliance.
• The appliances are not intended to be operated by means of an external timer or separate remote-control system.
• Keep the appliance and its cord out of reach of children.
Operation condition:
To use the air conditioner normally, please perform as to the below conditions.
Operating Range of Air Conditioner
Cooling
dry
Indoor Max. DB: 90°F(32°C) WB: 74°F(23°C)
Min. DB: 64°F(18°C) WB: 57°F(14°C)
Outdoor Max. DB: 115°F(46°C) WB: 79°F(26°C)
Min. DB: 23°F(-5°C)
Heating
Indoor Max. DB: 80°F(27°C)
Min. DB: 59°F(15°C)
Outdoor Max. DB: 75°F(24°C) WB: 59°F(15°C)
Min. DB: -4°F(-20°C)

1
Parts and Functions
Indoor unit
Outlet guide plate (air direction can be adjusted by using
direction adjustment key on the remote controller)
Air-inlet grille
Air lter (inside air-inlet grille)

2
Safety
• This manual should be saved and stored close to this air conditioning equipment.
• There are two types if indications. Both are related to safety and should be strictly followed. " Warning" highlights
issues that pose a risk of major injury or death. " Caution" highlights issues that pose a risk of equipment or bodily
injury.
• After installation and start-up commissioning, please give the manual to the user. The manual should be kept in safe
place and close to the unit.
• Installation and maintenance should be performed by an authorized agency. The wrong operation of this air condition
equipment may cause water damage, electric shock or re.
• Please install the unit on the top of a solid foundation or structure which is strong enough to support the unit.
• The installation of this condition equipment should follow local building codes.
• Use the right cable size, secure the terminal rmly, organize the cables well and make sure no tension is added on
cables. Cable insulation should not be damaged. Improper wire installation may lead to re.
• This unit is only compatible with R-410A refrigerant. If any other gas enters the system, it may lead to abnormal high
pressure which may cause damage or injury.
• Only use branches supplied by Haier. Use of any other branches will void warranty.
• Keep the condensate drain pipe away from toxic gas vents to prevent possible pollution of indoor environment.
• Care should be taken to ensure that there are no refrigerant leaks. R-410A is a heavy gas and will displace oxygen.
Ventilate the area if a leak if found.
• The unit is not explosion-proof. Please keep it away from ammable gases.
• The drain pipe should be installed per this manual to ensure proper drainage. The pipe should be well insulated to avoid
condensation. Wrong installation may lead to water damage.
• Both liquid pipe and the vapor pipe should be also well insulated. Not enough insulation may lead to system
performance deterioration or condensate formation.
• This equipment should not be used or serviced by personnel who have not been properly trained in its operation and
maintenance.
• Children should be supervised to ensure that they do not play on or near the equipment.
• Keep the appliance and its cord out of reach of children.
• The appliances are not intended to be operated by means of an external timer or separate remote-control system.
WARNING
• Grounding wire should be connected to the grounding bar. The grounding wire cannot be connected to the gas pipe,
water pipe, lightening rod or the telephone grounding wire. Improper grounding may cause electric shock.
• A circuit breaker should be installed. If not, it may cause electric shocks or accidents.
• After installation, the air condition equipment should be powered on and passed the electric leakage current lest.
• If the ambient humidity is more than 80%, if the water discharge hole is blocked or the lter becomes dirty or the airow
speed changes, this may lead to condensate water leaks. There may also be some drops of water spraying out.
CAUTION

3
Safety
Attention
• Do not put any heating apparatus under the
indoor units. The heat may cause distortion of the
units.
• Pay attention to the ventilation to avoid anoxic injury.
• Do not place an open ame in the path of blowing air.
• Do not install in a corrosive environment. If the base
collapses, the unit may fall and cause damage,
product failure, personal injury or death.
• Do not use the unit for special purposes such
as preserving foods, works of art etc. It is an air
conditioner for comfort cooling / heating, not a
precision refrigeration system.
• Use the correctly rated breaker or fuse. Improper
breaker or fuse may lead to re, electric shock,
explosion, personal injury or death.
• Turn off the power to save energy if the unit will
be not used for a long period. If the unit is not
powered off, it will consume power.
• Do not permit water or steam to enter the unit and
the wired controller. There is risk of unit failure, re,
electric shock, personal injury or death.
• 3-minutes protection
To protect the unit, there is a 3-minute time-out after
the unit stops or after power is applied.
• Close the window to avoid outdoor air getting in.
Curtains or window shutters can be put down to avoid
the sunshine.
• Do not touch the power switch with the wet hand to
avoid power shock.
• Turn off the system and remove power when servicing
the unit.
• Don't remove power while system is running.
• Do not clean the unit with water spray. There is risk
of unit failure, re, electric shock, personal injury or
death.
• Keep ammable gas or combustibles away from the
unit. There is risk of product failure, re, personal
injury or death.
• Please keep children away from this air condition
equipment.
Notices during Operation

4
Maintenance
Attention
• Repair can only be performed by licensed service technicians.
• Before touching the electrical connections, all power supplies should be turned off. Only after switching off the power
supply can the operator clean the air conditioner otherwise there is a risk of electric shock or injury.
• When cleaning the air cleaner, make sure to use a stable platform; don't ush the air conditioner with water, or
electric shock might occur.
Filter Maintenance:
Clean the air lter & air inlet grid.
• Don't remove the air lter except for cleaning, or faults may occur.
• When the air conditioner operates in the environment with too much dust, clean the air conditioner more times (generally
once every two weeks).
1. Remove the air inlet grid as shown below: press on the two locks on the grid (as shown in Fig. 1), gently
lift it at a 45 degree angle (as shown in Fig. 2), and then remove the air inlet grid.
2. Dismantle the lter: press the outer frame of the air inlet grid, and draw the base angle of the lter pull it out as to
disengage the locks, and remove the lter (as shown in Fig. 3).
Clean the air lter with a vacuum or water to remove dust.
For heavy dust, use the vacuum or directly spray mild soap on the air inlet grid, and then clean it with water after
soaking for ~10 minutes.
(A) remove dust with dust collector.
(B) for heavy dust, use a soft brush and mild detergent to clean.
(C) rinse off water/soap and dry in a cool place.
Fig. 1 Fig. 2 Fig. 3
Cleaning Air Cleaner
• Do not clean it with hot water 122°F(50°C) to avoid fading or distortion.
Attention
press down the locks hinge
lock port
remove air inlet grid
locks
bottom of gauze
hinges
frame of air inlet grid

5
Maintenance
Installing air cleaner and air inlet grid:
1. Mounting the lter: opposite of dismantling the lter (as shown in
Fig. 3 above).
2.Mounting the air inlet grid: as shown in the right gure, clip the
locks on the grid as directed by the arrows, put the side with the
hinges into the lock port, and then put the side with locks into
the panel frame. Release the locks to position the grid after
determining that the grid is ush with the bottom of the panel
frame.
Cleaning the air outlet port and the shell:
• Do not use gasoline, benzene, diluents, polishing powder or liquid insecticide to clean them.
• Do not clean them with hot water of over 122°F(50°C) to avoid fading or distorting.
Attention
• Wipe them with a soft dry cloth.
• Water or neutral dry cleaner is recommended if the dust cannot be removed.
Cleaning Louvers:
• To avoid damage to the louvers care should be taken when cleaning. Use damp cloth and mild detergent.
hinge
lock port
locks
insert air inlet grid

6
Fault Checkup
Please check the following when consigning repair service:
All these are not problems
Symptoms Reasons
Water ow sound
Water ow sound can be heard during starting operation, during operation
or immediately after stopping operation. When it starts for 2-3 minutes, the
sound may become louder, which is the owing sound of refrigerant or the
draining sound of condensate water.
Cracking sound During operation, the air conditioner may make a crackling sound, which
is caused from the temperature changes of the heat exchanger.
Terrible smell in outlet air The terrible smell may be caused from walls, carpet, furniture, clothing,
cigarette and cosmetics, that attach to the air conditioner.
Flashing operating indicator When switching it on again after power failure, turning on the manual
power switch will show the operating indicator ashes.
Awaiting indication
It displays the waiting indication as it fails to perform refrigerating operation
while other indoor units are in heating operation. When the operator set it to
the cooing or heating mode and the operation is opposite to the setting, it
displays the waiting indication.
Idle indoor unit still has sound of
refrigerant owing and radiating
temperatures.
To prevent oil and refrigerant from blocking the valve of idle units (off or
satised) while other indoor units are operating, some refrigerant ow is
allowed to pass through. This may result in some radiating temperature and
ow noise.
Clicking sound when unit comes on. When the conditioner is powered on, the sound is made due to the
expansion valve resetting.
Please make another check.
Start or stop working automatically Check if it is set to Timer-ON and Timer-OFF.
Failure to work Check if there is a power failure.
Check if the supply fuse and breaker are disconnected.
Check if the unit is displaying any faults.
Check if wait symbol is displayed. This is due to other indoor units connected
to the same outdoor unit are running in the opposite mode. System cannot
heat and cool simultaneously.
Bad cooling & heating effects
Check if air intake port and air outlet port of outdoor units are blocked.
Check if the door and windows are open.
Check if the air lter is blocked with sludge or dust.
Check if the setting of fan speed is set to low speed.
Check if the setting in in Fan Operation state.
Check if the temperature setting is correct.
Under the following circumstances, immediately stop the operation, disconnect the manual supply switch and contact the
after-service personnel.
• When buttons are inexible actuated;
• When fuse and breaker have been burnt over and over;
• When there are foreign objects or ice in the unit.;
• When system won't run after resetting power and waiting for 3-minute time out;
• When other abnormal conditions occur.

7
Installation Procedures
Caution:
Choose a suitable installation location.
Avoid places with high salinity (salt water) and high sulfur gas. Unit will corrode and damage will not be covered by
warranty.
Avoid excess oil (including mechanical oil) and steam. This can reduce efciencies and product performance.
Avoid areas where machines generate high frequency electromagnetic waves. They can cause control issues.
Warning:
protect the machine from winds or earthquake, install according to regulations. Improper installation will cause
accidents due to unit coming loose and falling.
(1) where there is enough room for the machine above the ceiling;
(2) where the drainpipes can be well positioned;
(3) where the distance between the air outlet port of the machine
and the oor is not more than 8.86ft(2.7m);
(4) where air inlet & outlet of the indoor units are not blocked;
(5) where it is sturdy enough to bear the weight of the unit;
(6) where there are no televisions, pianos or other valuables under
the indoor units as to avoid condensate dropping down, causing
damage.
(7) Where it is over 3.28ft(1m) away from the television and radio
as to avoid the interference from television and radio.
Select the following places to install indoor units.
Ensure the required space for installation and maintenance (refer to the following drawings).
The installation height should be kept within 8.86ft(2.7m).
When the height of the ceiling exceeds 8.86ft(2.7m), the warm air is harder to blow to the ground.
Installation Space
Required Tools for Installation
• Brazing torch
• 15% silver phosphorous copper brazing alloy
• Wire stripper
• Soap-and-water solution or gas leakage detector
• Torque wrench
• 17mm, 22mm, 26mm
• Tubing cutter
• Reaming tool
• Flaring tool
• Razor knife
• Measuring tape
• Level
• Vacuum pump
• Micron gauge
• Nitrogen
• Mini-Split AD-87 Adapter (1/4” to 5/16”)
• Non-adhesive Tape
• Adhesive Tape
• Electrical wiring
≥60in
(1500mm)
Outlet
Outlet
Suction inlet
≥40in (1000mm)
Over 98in (2500mm)
above the ground
H
≥60in
(1500mm)
≥60in (1500mm)
≥60in (1500mm)
≥60in (1500mm)
≥60in (1500mm)
Space required for installation, unit: in (mm)
Model H
MVAL009~018MV2AA 8.2 (206)
MVAL024MV2AA 9 (227)
MVAL030~036MV2AA 10.6 (269)
MVAL042~048MV2AA 12.3 (311)

8
Installation Procedures
Note:
Before suspending the indoor unit, select an installation location according to the piping and wiring in the ceiling, and
determine the direction of the piping. Prepare all pipes (refrigeration and drainage) and wiring (power supply,
communication and control) to be ready to connect once unit is installed.
1. Use cardboard template to locate desired location. Mark the mounting positions of the threaded rods using the guides
on the cardboard template.
2. Install 3/8in threaded rods to structure using appropriate fasteners.
3. Add nuts and washers at approximate height.
4. Lift the cassette and position the threaded rods into the 4 mounting clips on each corner of the cassette unit.
5. Adjust the height of the unit so that bottom surface is recessed 1 inch from ceiling surface.
6. Using a level, adjust the nuts on the threaded rods to obtain a level reading across the bottom of the cassette unit.
7. Tighten the top nuts to lock unit into place. An additional nut on top and bottom of bracket may be added to jam against
the installation nuts to prevent them from loosening due to unit vibration.
Hanging Unit
Tighten the nut on the washer.
nut (provided on site)
washer
hoisting foot washer
tightening (dual nuts)
[secure hoisting foot] [secure washer foot]
• Check if the indoor unit is level with the water level and
that the polythene tube drains with water. Check if the
size of the ceiling hole is correct. Remove any water
before mounting the decorated board.
• Fasten the screws to make the height difference between
the two sides of the indoor unit less than 0.2in(5mm).
Model H
MVAL009~018MV2AA 236
MVAL024MV2AA 257
MVAL030~036MV2AA 299
MVAL042~048MV2AA 341
gap between studs 31in (765mm)
gap between studs 31in (765mm)
ceiling 36in (890mm)
decorated board 38in (950mm)
indoor unit 34in (850mm)
indoor unit 34in (850mm)
ceiling 36in (890mm)
decorated board 38in (950mm)
130
H
Hanger bracket
Ceiling Trim panel
Distance between indoor unit and
ceiling≤0.8in (20mm)
Distance between indoor unit
and ceiling≤0.8in (20mm)
Overlap between ceiling and
trim panel≥1.2in (30mm)
Overlap between ceiling and
trim panel≥1.2in (30mm)