Haier MVAD007MV2AA User manual

Indoor Unit Operation & Installation Manual
MVAD007MV2AA
MVAD009MV2AA
MVAD012MV2AA
MVAD018MV2AA
MVAD024MV2AA
No. 0150519177
• 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 ...................................................................................................................................................................5
Installation Procedures......................................................................................................................................................6
Electrical Wiring............................................................................................................................................................... 11
Test Run & Failure Code .................................................................................................................................................17
MRV series multi zone air conditioning systems can operate multiple indoor units in heating or cooling. When in cooling,
only units set to cool will run. Same logic applies for heating..
Turn power on for 12 hours prior to start-up to allow the crankcase heater adequate time to protect the compressor.
All indoor units on the same refrigeration system should use the unied power switch to
ensure that all indoor units are all powered on during system operation.
Features:
1. Low static pressure indoor units.
2. Space saving design.
3. System automatically displays any diagnostic error codes.
4. Brushless DC motor for improved energy efciency.
5. Five fan speeds with a quiet operation mode.
6. Wider range of ESP: 0-0.12in.W.G.(0-30Pa).
7. Centralized controller function (optional from our company).
8. If there is a power outage during while the system is operating, the system will resume
the last mode and settings it was set to run in.
9. This indoor unit only has a wired controller option.
Operating Range
Cooling
Dry
Indoor Max. DB: 89.6°F (32°C) WB: 73.4°F (23°C)
Min. DB: 64.4°F (18°C)WB: 57.2°F (14°C)
Outdoor Max. DB: 109°F (43°C)WB: 78.8°F (26°C)
Min. DB: 23°F (-5°C)
Heating
Indoor Max. DB: 80.6°F (27°C)
Min. DB: 59°F (15°C)
Outdoor Max. DB: 69.8°F (21°C)WB: 59°F (15°C)
Min. DB: 5°F (-15°C)
User Manual

1
Parts and Functions
Supply air
Liquid and vapor ports
Drainage pipe (gravity)
Hanging bracket

2
• 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.
Safety
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
Cleaning 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 lter on a more regular basis
(generally once every two weeks).
(A) Brush off dirt and vacuum.
(B) Wash with soft cloth and mild detergent.
(C) Shake water off and allow the lter to fully air dry before reinstalling.
Maintenance
Cleaning the Air Inlet/Outlet Grilles:
• 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 Air Filter:
• Don't rinse the air lter with hot water of above 122ºF(50°C) to avoid fading and distorting.
• Don't put the air cleaner near re to dry to avoid catching re.
Attention

5
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.
Bad smell in outlet air Clean lters and conrm the condensate drain pan and line
are clean and clear.
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.
• Poor 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 ltering screen of the air cleaner is blocked with debris or dust.
Check if the fan setting is too low.
Check if the mode set to Fan mode.
Check if the temperature is set correctly.
Under the following circumstances, immediately stop the operation, disconnect the manual supply switch and contact the
after-service personnel.
• When buttons are not exible and actuated;
• When there are foreign objects or ice in the unit;
• When it cannot be operated after exiting the protection mode;
• When other abnormal conditions occur.

6
This manual cannot completely illustrate all the properties of the products you bought. Please contact the local Haier
distribution center if you have any question or request.
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.
1. The distance between air outlet and the ground should not
be more than 8.8ft (2.7m).
2. Select appropriate places for installation where the airow
can be spread evenly throughout the house. Arrange
proper locations for connecting pipes and lines as well as
the drainpipe to the outdoor.
3. Ceiling construction must be sturdy enough to hold the
weight of the unit.
4. Make sure that the connecting pipe, the drainpipe and
connecting guide line can be put into walls to connect the
outdoor units.
5. It is recommended to make the connecting pipe between
the outdoor and indoor units and the drainpipe as short as
possible.
6. Please read the attached installation instruction of the
outdoor unit for refrigerant charging if necessary.
7. The connecting ange should be checked by users.
8. Electrical appliances such as television, instruments,
devices, artwork, piano, wireless equipment and other
valuables should not be placed under the indoor unit as to
prevent condensate from dropping onto them and causing
damage.
Installation Procedures
Warning:
protect the machine from winds or earthquake, install according to regulations. Improper installation will cause accidents
due to unit coming loose and falling.
Indoor Units
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
1. Cut a hole in the wall and insert connection pipe and connecting wires through a eld supplied PVC pipe. The hole
should be inclined slightly downward with an inclination of at least 1/100 (see Figure 1).
2. Before cutting the hole, ensure no pipe or rebar is placed behind the cutting position. Avoid cutting a hole near wires or
connection pipes.
3. Hang the unit on a horizontal and rm roof. If the unit base is not stable, it may cause noise, vibration or leakage.
4. Support the unit rmly and shape the connection pipe, connecting wires and drain pipe to allow them to easily get
through the hole.
The following steps can be taken after selecting the installation place:
Figure 1

7
Installation Procedures
This series of air conditioners can be arranged in two air return modes: 1. Air return from the back (Factory default); 2. Air
return from the bottom (can be adjusted on site. See the following gures.)
Note:
The downward air return mode will increase noise 3-5dB(A). It is recommended to install the air conditioner in downward
return air mode 2 if enough space is available.
Air return from the bottom 1Air return from the back Air return from the bottom 2
Installation modes of Indoor unit
Installation space and method
Dimensions of return air inlet
h
Hanger dimensions
b
a
c
Dimensions of air outlet
d
f
g
e
Air in
Dimensions of pump drainage
hole, OD Ø1"
Dimensions of natural
drainage hole, OD Ø1"
Dimensions of drain hose
Body installation
1.Use 3/8" (M10) lifting bolts.
2.Ceiling removal: For different building structures, please consult with building personnel about actual conditions.
a. Ceiling reinforcement: Ensure the ceiling is horizontal and will not shake. The ceiling base frame must be reinforced.
b. Cut off and remove the ceiling base frame.
c. Reinforce the faces left when the ceiling is removed and further reinforce the base frame that fix both ends of the
ceiling.
d. After the unit installation is complete, it is time to install pipes and wires. Before installation, choose a suitable
installation position and determine the outgoing direction of pipes. Especially in case that a ceiling exists, please pull
refrigerant tubing, drain hose, indoor and outdoor connecting wires, control wires to their connection positions prior to
hanging the machine.
Model a b c d e f g h i
MVAD007~12MV2AA 16.5 35.1 14.6 33.5 7.3 25.2 3.6 29.9 6.0
MVAD018~24MV2AA 16.5 47.7 14.6 46.1 7.3 37.8 3.6 42.5 6.0
Dimension (unit: in.).

8
Installation of air-inlet grille
The angle of air-inlet grille should be parallel with that of air inlet direction, otherwise it will cause more noise. Example
shown to the right.
Duct Installation of Indoor Units:
1.Installation of the duct work:
With a square supply duct, the bore shouldn't be less than the sizes of air outlet duct.
2.Installation of the air return duct: Connect one side of the air return duct to the air return of the indoor units with rivets,
with the other side connected to air return shutter, as shown in Fig. 1.
3.Insulating Supply Ducts: Supply and return air ducts should be insulated.
Air inAir in
Correct Wrong
˃40in
(1000mm)
˃4in(100mm)
˃24in
(600mm)
Reserve 24in×24in
(600mm×600mm) access hole
4-Ø3/8"(M10)hanging bolt
8-Ø3/8"(M10) nut
8-Ø3/8"(Ø10) Washer
Level the unit within 0.2in(5mm).
If end A is to drain water, ensure end B is slightly higher than the end A
to facilitate drainage.
Otherwise, ensure end A is slightly higher than end B.
Installation Procedures
Electric control
enclosure
Installation space Installation mode
Air return shutter Air return pipe Indoor unit
Revit
Fig.1
Connection of oil return pipe
Model Ultra-Silent Silent Standard ESP default High ESP Super High ESP
Grade 1 2 3 4 5
This machine uses a DC motor. Multiple ESP adjustments are available. The factory default is standard ESP. The ESP &
Silent mode can be set according to the static pressure and the noise requirement. Setting ranges are as follows:
Operation:
YR-E17 wired controller: With the display on, press Fan + Set keys for 5s to enter static pressure set mode. The static
pressure icon will ash and current static pressure will display. Press ▼▲ key to change static pressure grade, then press
the Set key to conrm.
Note:
This series are low ESP duct, all the sets above must be handled by a wired controller.
Selection of fan outlet