Haier AB072FDAHA User manual

MRV Intelligent Network Cassette Type
Air Conditioner Indoor Unit
INSTALLATION MANUAL
No.0010570459
B
Please read this manual carefully before using.
Please keep this manual carefully and safely.
AB072FDAHA
AB092FDAHA
AB122FDAHA
AB162FDAHA
AB182FDAHA
AB242FDAHA
AB282FDAHA
AB072FDBHA
AB092FDBHA
AB122FDBHA
AB162FDBHA
AB182FDBHA
AB242FDBHA
AB282FDBHA

Contents
Safety cautions-----------------------------------------------------------------------------------------------------1
Indoor unit installation----------------------------------------------------------------------------------------- 2-7
Refrigerant piping------------------------------------------------------------------------------------------------8-9
Electrical wiring & Application control--------------------------------------------------------------------10-14
Trial operation-----------------------------------------------------------------------------------------------------15
Troubleshooting-----------------------------------------------------------------------------------------------16-17
Panel installation----------------------------------------------------------------------------------------------18-21
Caution
Auto Restart function for C-MRV models
Haier Auto Restart function: when the unit power drops down suddenly, the unit
microprocessor will store the previous working condition and when the power is on again,
the unit will run as this memory.
Auto Restart function is designed basically on the MRV whole system, but it is suitable
for each indoor unit individually.
If some of indoor units power cut down, but the outdoor unit and the other indoor units
still work, maybe problems will happen such as freezing at cooling mode and overload
protection at heating mode on those indoor units without power.
Reason
When one or some indoor units power drops down and the other indoor units are still
work, the indoor units without the power, will keep the previous working condition before
the power is off. And expansion valve keeps open at a kind of opening rate condition as
the previous requirement, so there is refrigerant flowing in the exchanger, but the indoor
fan stops working. If the units work at cooling mode, the indoor units without the power
will maybe make freezing. If the unit works at heating mode, maybe the outdoor unit
compressor will stop because of the pressure or temperature protection. This is our design
basically on Auto Restart function currently.
Haier, Herewith, solemnly informs our customers, installers, distributors, etc. when making
installation, please make sure when the power is shut down whether artificially or
accidentally, the whole system including outdoor unit and all the indoor units must
be off. If you do not make the installation as our indication, Haier will not be responsible
for any problem resulting from this.
21

20
Safety Cautions
1
The following safety measures must be strictly followed.
Keep these safety measures close at hand for timely references.
After installation, trial run must be made to ensure normal operation. Familiarize the user with the use
and maintenance through this manual.
If the air conditioner is transferred to a new user, this manual should also be transferred.
Please pay attention to the following:
Warning: Inappropriate use may lead to fatal or serious injuries.
Caution: Inappropriate use may lead to bodily harm or mechanical damage; it may lead to serious
consequences in some cases.
Any instructions with the sign of ì NOî shall be strictly followed, otherwise, it may cause me-
chanical damage or endanger the safety of the user.
Any instructions with the sign of ì STOPî shall be strictly followed, otherwise, it may cause me-
chanical damage or endanger the safety of the user.
Entrusted installation
Installation should be entrusted with after-sale
servicemen. Self-installation is likely to cause
water leakage, shock and fire, etc.
Installation should be done according to this install-
ation manual. Inappropriate installation may lead to
water leakage, shock and fire, etc.
Connection of the earth wire
The earth wire should not be connected to gas pipes,
water pipes, lightning rods or telephone wires. Poor
earth may lead to shocks
After-sale servicemen should take measures to avoid
refrigerant leakage.
Refrigerant leak may cause anoxia when a certain
density is reached. If the room is small, make sure to
have sound safety measures to avoid anoxia accidents.
The installation of the electric part should be con-
ducted by qualified professionals and done accord-
ing to the installation manual. Special return circuit
must be used. Insufficient capacity return circuit and
inappropriate installation may lead to fire accidents.
Installation site
The site must be firm enough to withstand the weight
of the air conditioner to prevent falling.
During installation, if refrigerant leakage occurs,
ventilation measures must be taken. When refrig-
erant meets with fire, hazardous gas will be produced.
After installation, make sure that there is no refriger-
ant leakage.
Refrigerant, if meeting with heaters and stoves, etc
in the room, may produce hazardous gas.
Specific cables should be used for the wiring. To avoid
external tension of the cables, the terminals should
be firmly fixed. Inappropriate connection and fixture
may lead to fire accidents.
In order to discharge the condensed water, the
installation of the drainpipe should be done in
accordance with the manual instructions. The
drainpipe should be treated for heat isolation.
Inappropriate treatment may lead to water leak-
age in the room.
Electric leak breaker should be installed.
Without it, shock accidents may occur.
Do not install at places where inflammable gas leak
may occur.
Gas leakage may lead to fire accident.
Caution
Warning

2
Indoor unit installation
19

18 3
Indoor unit installation

4
Indoor unit installation Troubleshooting
17
93/94
11
12
14
17
18
1C
1d
1F
21
b5
b6
97
98
99
0C
Phenomenon
Running
continues
Running
continues
All stop
Running continues
All stop
All stop
All stop
All stop
All stop
All stop
All stop
Running continues
All stop
Running continues
Running continues
Stops
Runs
Outdoor interlocked input, including outdoorl unit and indoor PC board
Room-temperature sensor (TA) circuit, including Room-temperat-
ure seasor (TA), indoor PC board
Indoor heat-exchanger temperature sensor circuit (TC1/TC2), including indoor
heat-exchanger temperature sensor (TC1/TC2) and indoor PC board
Indoor fan system, including revolution detecting circuit, indoor fan mo-
tor and indoor PC board
Indoor unit, including PC board (EEPROM and peripheral circuit)
Converter overcurrent protection circuit, including G-Tr, outdoor PC
board, converter wiring and compressor
Current sensor circuit, including current detecting circuit and outdoor
converter PC board
Outdoor defrosting sensor circuit, including outdoor defrosting sensor (TE)
and outdoor converter PC board
Outdoor unit, including outdoor interface control (I/F) PC board
Compressor system, including compressor lock and phase absence
Current detecting circuit, including power pressure and overload of refrig-
erant circulation
High presure switch circuit, including high pressure switch and overload
of refrigerant circulation
Setting of indoor unit number and remote controller
Connecting wire, indoor PC board and remote controller
Center controlled address setting, including address setting (SW02),
central remote controller and indoor PC board
Center controlled communication circuit, including communication wire,
centralized controller, indoor power and indoor PC board
Outdoor abnormal input, including outdoor unit and indoor PC board
Fault
code Reasons
Fault codes and reason

Troubleshooting
16
Confirm and verify
1.Press the ì Checkî switch on the remote controller for 1-2 seconds, ì Checkî will appear, and
the unit number and the error code will be displayed on the remote controller.
2.The displayed number is the error unit number.
3.Example is listed as follows:
Normal:
One error:
Two errors:
The signs will be displayed for a very short time. If not seen clearly, press the ì Checkî switch again.
When failure occurs, use the remote controller to display the corresponding error code.
Checking
Fault codes and error place
Fault code
Put the nut on the screw bolt and suspend it on the T slot of the suspension part of the unit.
Keep level of the body (within 5mm) with a gradoenter.
Make sure and adjust the positions of the unit and the ceiling opening as well as the height
of the unit with the installation template.
1. The bottom of the unit is 58mm from the lower ceiling surface. (four corners)
2. Make sure that the front side of the indoor unit (tube side) is 95mm from the ceiling and the
back side of the unit (opposite side) is 35mm from the ceiling with the template.
Installation of the panel
Mount the panel after tubing and wiring installation.
Please refer to P18-21 of this manual for the panel installation.
Before installation, make sure that the positions of the indoor unit and the ceiling opening
are correct.
Requirements:
There is no space between the panel and the ceiling and between the panel and the indoor
unit, otherwise, dew or water leak may occur.
Installation of remote controller
58
15
indoor unit
ceiling
installation template
front side
(tube side)
95
lower
ceiling
surface
indoor unit
35
back side
(opposite
side)
Tighten the upper nut to fix the indoor unit.
installation template installation template
Please refer to the installation manual for the installation of the remote controller.
5
Indoor unit installation
suspension screw
(M10)
tighten up with a nut
gradienter
nut (M10)
parts other than M10 flat gasket are
provided during installation
M10 flat gasket
M10 flat gasket
for safety, please mount according
to this diagram
nut (M10)

The indoor drainpipe should be treated for heat isolation.
The indoor connections must have heat isolation. Inappropriate isolation may lead to
dew forming.
The drainpipe must have a falling gradient (above 1/100) and should not be made into
an ì Sî form, otherwise, it will produce noises.
The horizontal length of the pipe should be shorter than 20m. If the pipe is long, one
support should be set up for every 1.5-2m. Avoid undulation of the pipe.
Centralized piping is installed according to the following diagram.
Never apply external forces on the connections of the drainpipe.
To enable normal discharge of water, use drainpipes according to the installation manual. To
avoid forming of dewdrops, it must be treated for heat isolation. Inappropriate tubing may
lead to water leakage in the room.
Caution
Requirements:
Pipe material
*
1.
5m~2m
isolation
material
"S" shaped pipe
VP30
as large as possible(about 10 cm)
falling gradient
above 1/100
support
falling
gradient
(above 1/100)
Pipe material and isolation material
Unit attached parts:
Isolation material
Hard PVC pipe 31.5mm (inner diameter)
Foam polyethylene thickness above 10mm
6
Indoor unit installation Trial operation
15
Before operation
Heating mode
Set the running mode to ì Heatî
Press the ON/OFF button till a blinking ì Hî and an ì Autoî sign appear on the wire controller. Now
the unit enters into heating trial run.
During forced trial run, working modes cannot be changed through the wire controller.
After trial run, press the ON/OFF button to stop the unit.
Trial operation
Refer to the service manual for the running procedure.
When the unit fails to start under room temperature, try forced trial run by the following steps.
Cooling mode
Set the running mode to ì Coolî
Press the ON/OFF button till an ì Lî blinks at the ì Setting Tempî area on the wire
controller LCD and ì Autoî is displayed at the fan speed area. Now the unit enters
into cooling trial run.
Before the unit is turned on, test the resistance between the power block terminal (L, N terminals) and
the earth.If it is below 1M , it can't allowed running.
Turn on the outdoor unit. To protect the compressor during start-up, it should be switched on 12 hours
in advance.
Never operate the electromagnetic contactor manually for forced trial run. (It is dangerous when the
protection device does not work.)

14
Electrical wiring & Application control
7
Indoor unit installation

8
Warning
During installation, if refrigerant gas leakage occurs, ventilation measures must be taken. When
refrigerant gas meets with fire, hazardous gas will be produced.
After installation, make sure that there is no refrigerant leak.
Refrigerant, if meeting with heaters and stoves, etc in the room, may produce hazardous gas.
Allowable tube length and allowable height difference
Different units have different limits. Refer to the attached manual.
Pipe material and size
Material
Model
Pipe size Gas side
Liquid side
Air conditioner used deoxidized phos-copper (TP2)
series 072~162
model
Refill refrigerant
Refer to the installation manual for the refilling of refrigerant. A special meter should
be used for the filling of refrigerant and the filling must be in strict accordance with the specifications.
R22:AB072~282FDAHA
R407:AB072~282FDBHA
Requirements:
Overfilling or underfilling may lead to compressor trouble. The filling must be done
in strict accordance with the specifications.
Connection of refrigerant pipes
Connect all refrigerant tubes before connection of the flare tube.
Use two spanners for the indoor connection.
Refer to the following table for the installation torque.
Torque increase (N-m)
Pipe external
diameter (mm) Torque (N-m)
series 182~282 model
Refrigerant piping
13
remote controller
D
Electrical wiring & Application control
()mm
15.88
9.52
12.70
6.35
6.35 11.8(1.2kgf-m) 13.7(1.4kgf-m)
9.52
15.88
24.5(2.5kgf-m)
78.4(8.0kgf-m)
29.4(3.0kgf-m)
98.0(10.0kgf-m)
12.70 49.0(5.0kgf-m) 53.9(5.5kgf-m)
19.05 98.0(10.0kgf-m) 117.7(12.0kgf-m)