Samsung MHXXXFJEA Series User manual

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E-2
Safety Precautions
Keep this installation manual together with the user’s manual in a handy place so that you can find it whenever
you need to see it after reading this manual thoroughly.
 Make sure to read the following safety precautions carefully before installation.
 Make sure to observe the cautions specified in this manual.
 Conduct a test run of the unit after installation and then explain all system functions to the owner.
 The indications and meanings are as shown below.
WARNING
 This indicates the possibility of serious injury or death.

The unit should be installed in
accordance with the National
Electrical regulations.

Ensure that the national safety
code requirements have been
followed for the main supply
circuit. Ensure that a properly
sized and connected ground
wire is in place.

Check if the voltage and the
frequency of the main power
supply are those required for
the unit to be installed and
check the connection.

Make sure that properly sized
disconnecting and safety
switches are installed.
Do not attempt to repair,
move, modify or reinstall
the unit on your own. Make
sure that these installations
are carried out by qualified
personnel to avoid electric
shock or fire.

Use the unit on a single outlet
circuit. Do not share the power
outlet with other appliances.
Obtain the consent by a
qualified installer before
connecting the unit to the
power supply system.
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E-3
ENGLISH
WARNING
 This indicates the possibility of serious injury or death.

Installation must be carried
out by a qualified installer.

Installers are required to read
the general information
carefully for safety.

Do not put the unit near
dangerous substances to
prevent fire, explosion or
injury and do not expose
the unit to direct sunlight.
Do not install the unit by
yourself (owners).
Incorrect installation of the
unit could cause injury due
to fire, electric shock and
water leakage or from the
unit falling. Consult a dealer
or a qualified installer.
Install the unit in a place
where it is strong enough
to hold the product weight.
When installed in place
where it is not strong
enough to withhold the
product weight, the unit
could fall and cause injury.
The units must be installed
according to distances
declared, in order to permit
accessibility from each side,
either to guarantee correct
operation of maintenance
or repairing products. The
unit’s parts must be reach-
able and removable com-
pletely under safety condi-
tion (for people or things)

Use the specified wires to
connect the indoor and
outdoor units securely and
attach the wires firmly to the
terminal block connecting
sections so that the pressure
is not applied to the sections.
Inappropriate connection and
fixing could cause fire.

Avoid the use of an
extension cord and do not
share the power outlet with
other appliances. Incomplete
connection, defective
insulation or exceeding the
permissible current may cause
electric shock or fire.

Make sure that the refrigerant
gas does not leak after
completing the installation.
If the refrigerant gas of
the indoor unit leaks and
comes into contact with the
fan heater, space heater or
stove, harmful substances
will be generated.
Perform the installation
securely referring to
the installation manual.
Incomplete installation
could cause personal injury
due to fire, electric shock
and water leakage or from
the unit falling.
Attach the electrical cover
to the indoor and outdoor
unit securely. If not, it could
result in fire or electric
shock due to dust or water.
Make sure to use the part
provided or specified parts
for the installation work.
The use of defective parts
could cause an injury or
leakage of water due to a
fire, an electric shock, the
unit falling, etc.
Make sure to turn off
the main power when
setting up the indoor unit
electrical circuit or power
cords.
There is a risk of electric
shock.
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E-4
CAUTION
 This indicates the possibility of serious injury or damage to environments when
operated incorrectly.

Check the unit for damage
that may have taken place
during transportation and do
not install or use damaged
equipment.

All of the manufacturing and
packaging material used for
your new appliance are
compatible with the
environment and can be
recycled.

Dispose of the packaging
material in accordance with
the local requirements.

This product is an air
conditioning system and
contains a coolant that must
be recovered and disposed
of in an appropriate way by
qualified personnel. At the
end of the life cycle, take it to
a proper recycling or disposal
center or return it to the
dealer so that it can be
disposed correctly.
Grounding the unit.
Do not connect the ground
to a gas pipe, water pipe,
lightning rod or telephone
grounding. Defective
grounding could cause
electric shock.

Do not install the unit in a
place where it is exposed to
inflammable gas leakage.
There is a risk of explosion.

Install a ground leakage
breaker depending on the
installation place (where it is
humid). If not, it may cause
electric shock.

Perform the drainage/piping
work securely according to
the installation manual.
If not, water could drop from
the unit and household
goods could get wet and
damaged.
Fasten a flare nut with a
torque wrench as specified
in this installation manual.
When fastened too tight,
a flare nut may break after
a long period of time and
cause refrigerant leakage.

The air conditioner must be
installed according to the
national electrical
regulations.

The maximum input power &
current is measured
according to the IEC standard
and the input power &
current is measured
according to the ISO and
EN14511standard.
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E-5
ENGLISH
Contents
Preparation for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Deciding on where to install the indoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Indoor unit installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Purging the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Connecting the refrigerant pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Cutting/Flaring the pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Performing leak test & insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Drain hose installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Connecting the connection cord . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Assigning address to indoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Additional accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
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E-6
Preparation for installation
When deciding on the location of the air conditioner with the owner,
the following restrictions must be taken into account.
General
Do NOT install the air conditioner in a location where it will come into
contact with the following elements:
 Combustible gases
 Saline air
 Machine oil
 Sulphide gas
 Special environmental conditions
If you must install the unit in such conditions, first consult your dealer.
Accessories
 The following accessories are supplied with the indoor unit.
The type and quantity may differ depending on the specifications.
Avoid installing the air conditioner:
 In areas where it is exposed to direct sunlight. Close to heat sources.
 In damp areas or locations where it could come into contact with water
(for example rooms used for laundry)
 In areas where curtains and furniture could affect the supply and discharge of air.
 Without leaving the required minimum space around the unit (as shown in the
drawing).
 In scarcely ventilated areas.
 On surfaces that are unable to support the weight of the unit without deforming,
breaking or causing vibrations during the use of the air conditioner.

In a position that does not enable the condensate drainage pipe to be correctly
installed (at the end of the installation. It is always essential to check the efficiency
of the drainage system.)

Only for floor standing type installation.
User’s
manual
Installation
manual
Insulation Install
Outlet
Insulation Install
SVC
Bracket Hanger
Cable-tie
Wireless remote
control
Battery Drain Hose M4x12 tapped
screw
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E-7
ENGLISH
Deciding on where to install the indoor unit
Indoor unit
This unit has to be installed as floor type only.
 There must be no obstacles near the air inlet and outlet.
 Select a convenient location that permits the air to reach every corner of the
area to be cooled.
Pre-plan for easy and short routing of the refrigerant tubing and wiring to the
outdoor unit.
 There should be no flammable gas, alkaline, substances present in the air.
 Maintain sufficient clearance around the indoor unit.
 Make sure that the water dripping from the drain hose runs away correctly and
safely.
 Do not install the unit where it will be exposed to direct sunlight.
Space requirements for indoor unit



Avoid installing the air conditioner:
 In areas where it is exposed to direct sunlight. Close to heat sources.
 In damp areas or locations where it could come into contact with water
(for example rooms used for laundry)
 In areas where curtains and furniture could affect the supply and discharge of air.
 Without leaving the required minimum space around the unit (as shown in the
drawing).
 In scarcely ventilated areas.
 On surfaces that are unable to support the weight of the unit without deforming,
breaking or causing vibrations during the use of the air conditioner.

In a position that does not enable the condensate drainage pipe to be correctly
installed (at the end of the installation. It is always essential to check the efficiency
of the drainage system.)

Only for floor standing type installation.
The units must be installed according to distances declared, in order to
permit accessibility from each side, either to guarantee correct opera-
tion of maintenance or repairing products.
The unit’s parts must be reachable and removable completely under
safety condition (for people or things).
This model can be installed with no side space. But it is recommended
installing like above.
CAUTION
User’s
manual
Installation
manual
Insulation Install
Outlet
Insulation Install
SVC
Bracket Hanger
Cable-tie
Wireless remote
control
Battery Drain Hose M4x12 tapped
screw
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E-8
Drawing of the indoor unit
Deciding on where to install the indoor unit (Continued)
720
Length of pipes and difference in height: see the outdoor unit installation manual
Vacuum and refrigerant charge: see the outdoor unit installation manual
No. Name
Description
MH026/035FJEA MH052FJEA
1 Liquid pipe connection ø6,35 Φ6.35
2 Gas pipe connection ø9,52 Φ12.7
3 Drain pipe connection ID: ø12 ; OD: ø18
4 Power supply connection -
Dimension And Weight MHFJEA
Net Dimension Indoor Unit mm 720*620*199
Net Weight Indoor Unit kg 15,2
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E-9
ENGLISH
1
When you install the indoor with side-pipe connection, please make space
more than 300mm from the wall at the pipe connection direction.
2
When you install the indoor at the inclined floor, please lean the set toward
the drain hose and pipe connection to prevent water overflowing.
3
Please remove the items when set is installed.
MH026/035FJEA : 6 Items
MH052FJEA : 7 Items
4
The body front should be opened to connect pipes.
Please release the 4 screws of body front
and then pull it out from the bottom of the set.
Indoor unit installation
It is recommended to install the refnet joint before installing
the indoor unit
Screw Hole
Screw Hole
Position
of drain
Position
of drain
300mm 300mm
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E-10
From factory the unit is supplied and set with a pre-charge of nitrogen gas
(insert gas). Therefore, all insert gas must be purged before connecting the
assembly piping.
Make sure all the nitrogen gas is purged out before installing the unit. If
not, do not install the unit because leftover nitrogen could cause internal
leakage.
Unscrew the pinch pipe at the end of each refrigerant pipe.
Result: All inert gas escapes from the indoor unit.
Note To prevent dirt or foreign objects from getting into the pipes
during installation, do NOT remove the pinch pipe completely until
you are ready to connect the piping.
Indoor unit installation(Continue)
 The designs and shape are subject to
change according to the model.
Purging the unit
5
Making a hole on the wall.
6
The pipes & cable should be go through the bottom back hole.
7
Hanging the indoor unit on the Bracket Hanger, then fix the Indoor Unit by
using 4 Screws.
 Case 1. Installing on the floor : Must fix 4 screws on the wall, make the
indoor not to fall down(For safety installation) .
 Case 2. Hanging on the wall : Follow the installation guide supplied in the
accessory part.
 Screw positions are specified on the installation guide.
Liquid refrigerant port
Gas refrigerant port
Ø60~65mm
Drain hose
less than 70mm
Inside room
Outsite room
75mm
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E-11
ENGLISH
Connecting the refrigerant pipe
There are two refrigerant pipes of different diameters:
 A smaller one for the liquid refrigerant
 A larger one for the gas refrigerant

The thickness of tube should not be less than 1.0mm.
 The inside of copper tube must be clean & has no dust.
1
Remove the pinch pipe on the pipes and connect the assembly pipes
to each pipe, tightening the nuts, first manually and then with a torque
wrench, a spanner applying the following torque.
Outer Diameter Torque (N•m)
6.35 mm (1/4”)
9.52 mm (3/8”)
12.70 mm (1/2”)
15.88 mm (5/8”)
19.05 mm (3/4”)
18
42
55
65
100
Note If the pipes must be shortened refer to page 10.
2
Must use insulator which is thick enough to cover the refrigerant tube to
protect the condensate water on the outside of pipe falling onto the floor
and the efficiency of the unit will be better.
3
Cut off any excess foam insulation.
4
Be sure that there must be no crack or wave on the bended area.
5
It would be necessary to double the insulation thickness(10mm or more)
to prevent condensation even on the insulator when if the installed area is
warm and humid.
6
Do not use joints or extensions for the pipes that connect the indoor and
outdoor unit. The only permitted connections are those for which the units
are designed. CAUTION
Use the bender which have a minimum
bending radius when you bend the pipe.
 Be careful so that the pipes is bended one
time only. Piping will be very difficult if
you repeat the bending more than twice.
If you bend the pipe by using spring
Bending radius should be more than
100mm so that pipe is not distorted.
Spring pipe
Refrigerant oil
Torque wrench
Flare nut
Union
Spanner
CAUTION Connect the indoor and outdoor units using pipes with flared co-
nnections(not supplied). For the lines, use insulated, unwelded, d-
egreased and deoxidized copper pipe,(Cu DHP type to ISO1337),
suitable for operating pressures of at least 4200kPa and for a burst
pressure of at least 20700kPa. Copper pipe for hydro-sanitary ap-
plications is completely unsuitable.
For sizing and limits (height difference, line length, max. bends,
refrigerant charge, etc.) see the outdoor unit installation manual.
All refrigerant connection must be accessible, in order to permit
either unit maintenance or removing it completely.
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E-12
Cutting/Flaring the pipes
CAUTION
In case of welding the pipe, you must weld with nitrogen gas blowing.
Inclined Damaged Surface Cracked Uneven Thickness
Oblique Rough Burr
1
Make sure that you have the required tools available.
(pipe cutter, reamer, flaring tool and pipe holder).
2If you wish to shorten the pipes, cut it with a pipe cutter, taking care to ensure
that the cut edge remains at a 90° angle with the side of the pipe. Refer to the
illustrations below for examples of edges cut correctly and incorrectly.
3
To prevent any gas from leaking out, remove all burrs at the cut edge of the
pipe, using a reamer.
4
Slide a flare nut on to the pipe and modify the flare.
Outer diameter (D) Depth (A)
6.35 mm (1/4”)
9.52 mm (3/8”)
12.70 mm (1/2”)
15.88 mm (5/8”)
19.05 mm (3/4”)
1.3mm
1.8mm
2.0mm
2.2mm
2.2mm
5
Check that the flaring is correct, referring to the illustrations below for
examples of incorrect flaring.
6
Align the pipes and tighten the flare nuts first manually and then with
a torque wrench, applying the following torque.
Valve Flare nut Valve cap Pressure port cap Valve needle Pressure port
Wrench(mm) N•m Wrench(mm) N•m Wrench(mm) N•m Wrench(mm) N•m Wrench(mm) N•m
1/4" 17 18 23 20 18 16~18 Allen(hex.) 5 9 - 0.34
3/8" 22 42 23 20 18 16~18 Allen(hex.) 5 9 - 0.34
1/2" 26 55 29 40 18 16~18 Allen(hex.) 5 13 - 0.34
5/8" 29 65 29 40 18 16~18 Allen(hex.) 5 13 - 0.34
3/4" 36 100 38 40 18 16~18 Allen(hex.) 5 13 - 0.34
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E-13
ENGLISH
Performing leak test & insulation
 LEAK TEST WITH NITROGEN (before opening valves)
In order to detect basic refrigerant leaks, before recreating the vacuum and
recirculating the R-410A, it’s responsable of installer to pressurize the whole
system with nitrogen (using a cylinder with pressure reducer)
at a pressure above 30 bar (gauge).
 LEAK TEST WITH R-410A (after opening valves)
Before opening valves, discharge all the nitrogen into the system and create
vacuum. After opening valves check leaks using a leak detector for refrigerant
R-410A.
Leak test
Discharge all the nitrogen to create a vacuum and charge
the system.
CAUTION
No gap
NBR(T13.0 or thicker)
Insulation
Once you have checked that there are no leaks in the system,
you can insulate the piping and hose.
1
To avoid condensation problems, place T13.0 or thicker Acrylonitrile
Butadien Rubber separately around each refrigerant pipe.
Note Always make the seam of pipes face upwards.
2
Wind insulating tape around the pipes and drain hose avoiding to compress
the insulation too much.
3
Finish wrapping insulating tape around the rest of the pipes leading to the
outdoor unit.
4
The pipes and electrical cables connecting the indoor unit with the outdoor
unit must be fixed to the wall with suitable ducts.
All refrigerant connection must be accessible, in order to permit
either unit maintenance or removing it completely.
CAUTION

CAUTION
Must fit tightly against body
without any gap.
Insulation cover pipe
Indoor unit
Be sure to overlap
the insulation
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E-14
Drain hose installation
When installing the drain hose for the indoor unit, check if condensation draining is adequate.
When passing the drain hose through the 65-mm hole drilled in the wall, check the following:
1If necessary, connect the 2-meter extension drain hose to the drain hose.
2If you use the extension drain hose, insulate the inside of the extension drain hose
with a shield.
3Fit the drain hose into 1 of 2 drain hose holes, then fix the end of the drain hose
tightly with a clamp.
 If you don’t use the other drain hose hole, block it with a rubber stopper.
4Pass the drain hose under the refrigerant pipe, keeping the drain hose tight.
5Pass the drain hose through the hole in the wall. Check if it slants downwards as
seen in the picture.
 The hose will be fixed permanently into position after finishing
the installation and the gas leak test; refer to page 11 for further details.
Shield
Drain hose Extension drain hose
(No
default resource )
The hose must
NOT slant upwards.
The end of the drain
hose must NOT be
placed under water.
Do NOT bend the hose
in different directions.
Keep a clearance of at
least 5cm between the
end of the hose and
the ground.
Do NOT place the end
of the drain hose in a
hollow.
5cm less
Ditch
1(L) 2(N)
F1 F2
Knock out
6-Ways to connect Drain Hose and Pipe
Drain hose installation
�
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E-15
ENGLISH
Connecting the connection cord
The indoor unit is powered by the outdoor unit by means of a H07 RN-F
connection cable (or a more power model), with insulation in synthetic rubber
and jacket in polychloroprene(neoprene), in accordance with the requirements
of standard EN 60335-2-40.
1Remove the screw on the electrical component box and remove the cover plate.
2
Route the connection cord through the side of the indoor unit and connect
the cable to terminals; refer to the figure below.
3
Route the other end of the cable to the outdoor unit through the ceiling &
the hole on the wall.
4Reassemble the electrical component box cover, carefully tightening the screw.
 Always remember to connect the refrigerant pipes before performing the electric connections.
When disconnecting the system, always disconnect the electric cables before disconnecting the refrigerant pipes.
 Always remember to connect the air conditioner to the grounding system before performing
the electric connections.
CAUTION
1(L) 2(N)
F1 F2
Wiring diagram
Indoor unit
Outdoor unit
For connection cord, use the grade H07RN-F or H05RN-F materials.
Between Indoor and Outdoor Connection Cord Specifications
Indoor Power Supply Indoor Communication Cable
Connection Wire
3G,1.0mm2 or more 2G, 0.75mm2 or more
Earth Wire
Earth Wire
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E-16
Assigning address to indoor unit
1
Before installing the indoor unit, assign an address to the indoor unit
according to the air conditioning system plan.
2
The address of the indoor unit is assigned by adjusting MAIN(SW02) and
RMC(SW04) rotary switches.
3
It is required to set the RMC address if you install the wired remote control
and/or the centralized control.
4If you install optional accessories such as the wired remote control, centralized
control, etc. see an appropriate installation manual.
5If an optional accessory is not installed, you do not have to set the RMC address.
However, adjust K1 and K2 switches of the SW05 DIP switch to "ON" position in
this case.
6 Set the MAIN address by adjusting the rotary switch(SW02) from 0 to F.
Each indoor unit connected to the same outdoor unit must have different
address.
If an indoor unit does not have an optional accessory and its MAIN address is "0"
SW05 SW06 SW07 SW02 MAIN
SW04 RMC
Extra
controller
SW05 SW06 SW07
SW02 MAIN
SW04 RMC
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E-17
ENGLISH
Troubleshooting
   
1
2
3
4
5
6
7
8
9
0

1
2
3
4
5
6
7
8
9
0
Abnormal conditions
LED lamp display
Remarks
White
Power reset
X X X X
Error of temperature sensor
in the indoor unit (Open/Short)
X X X X
Error of heat exchanger sensor
in the indoor unit
X X X
Indoor fan motor is non-operative
Indoor fan motor is operating slowly
Indoor fan motor operates at an excessive
speed
X X X X
Indoor motor fan error
Error of the outdoor temperature sensor
Error of the condensor temperature sensor
Error of the discharge temperature sensor
X X X
1. No comunication between indoor and outdoor
unit for 2 minutes
2. Error on the communication received from
outdoor unit
3. Outdoor unit tracking time out(3 minutes)
4. Number of Installation doesn't match after
tracking
X X X
1. Indoor unit error
(Display is unrelated with
operation)
2. Outdoor unit error
(Display is unrelated with
operation)
Simultaneous cooling/heating operation
error (Multi mode only)
X X X
 If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
On Flickering
X Off
Detection of errors
 If an error occurs during the operation, one or more LED flickers and the operation is stopped except the LED.
 If you re-operate the air conditioner, it operates normally at first, then detect an error again.
Display Error mode
FJM CONSOLE_IM_29317A_E_12.05.08.indd 17 2008-12-5 15:56:30

E-18
Troubleshooting (Continued)
Abnormal conditions
LED lamp display
Remarks
White
[Self diagnosis]Power voltage detection
between indoor and outdoor unit communica-
tion cable
[Self diagnosis]Outdoor unit refrigerant
leakage(Gas leak)
[Self diagnosis]Outdoor fan restriction error
[Inverter]Inverter compressor operation failure
[Inverter] DC peak error
[Inverter]DC Link voltage 150V or less, 410V or
more
[Inverter] Compressor rotation error
[Inverter]Electric current error
[Inverter]DC Link sensor error
[Inverter]EEPROM READ/WRITE error
[Inverter]Inverter zerocrossing error
Setting the outdoor unit capacity option error
X X
EEPROM error
X X
EEPROM option error
MPI no feedback Error
X X X X
 If you turn off the air conditioner when the LED is flickering, the LED is also turned off.
On Flickering
X Off
Display Error mode(Cont.)
FJM CONSOLE_IM_29317A_E_12.05.08.indd 18 2008-12-5 16:05:01

E-19
ENGLISH
Troubleshooting (Continued)
Display Explanation Remark
No feedback error
Indoor unit Communication Error
Indoor/Outdoor unit Communication Time Out Error
60 Packet Over data
Indoor Temp. Sensor (Open/Short Error)
Indoor Unit Eva in Sensor (Open/Short Error)
EEPROM ERROR
EEPROM Option setting error
 If an error occurs, is displayed on the wired remote control.
If you would like to see an error code, press the Test button.
Indoor unit
Wired Remote Display Error Mode(Option resource)
FJM CONSOLE_IM_29317A_E_10.16.08.indd 19 2008-11-24 15:41:42

E-20
Additional accessories
Centralized
control
1
Cable-tie Cable clamp M4x16
tapped screw
User's
manual
Installation
manual
2 5 7 1 1
Centralized control accessories
For information on additional options and accessories,see either product
catalogue or accessories installation and operation manual.
Wired Remote Controller Accessories
Wired
remote controller
1
Cable-tie
2
Cable clamp
5
M4x16 tapped
screw
7
Indoor unit power
drawing cable
1
Communication
cable of the wired
remote controller
1
Wire joint
1
Owner’s
instructions
1
Installation manual
1
Wireless Remote Controller Accessories
Wireless
remote controller
1
Batteries for
remote controller
M4x12 tapped
screw
Remote con-
trol holder
User's
manual
Installation
manual
22111
FJM CONSOLE_IM_29317A_E_11.24.08.indd 20 2008-11-28 9:51:52