Friedrich C24YJ Warranty Page 2
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Black
G
GRILLE INSTALLATION
BLOWER COVER INSULATION
Install the blower cover insulation only when the outlet direction is not
specified.
Two blower cover insulations are packed with the indoor unit.
Install the blower cover insulation at the diffuser position shown in figure.
At this time, use the piping position as the criteria.
A-A Section view
A
A
INSTALLING THE INTAKE GRILLE
(1) Mount the grille hinge wire to the hook shaft as shown in figure.
A
• Latch the grille hinge wire to the hook shaft, and fasten.
Part A detail view Part A section view
Grille hinge
wire
(2) Install the hook wire.
• Pass the hook wire through the panel base from the rear side as
shown in figure, and fasten to the reinforced metal fitting of the
intake grille using a screw.
Screw
Section view
2 direction example
(Piping direction)
Blower cover
insulation
Panel
base
Drain
pan
Hook shaft
Hook wire
RFM (grille)
(3) Loosen the screw, put the loop of the hook wire over it, and tighten
the screw again.
CAUTION
Install the intake grille hook wire to the grille assem-
bly. If it falls, it may cause injuries.
(4) Bring up the intake grille by pushing it up at an angle as shown in
figures, and fasten.
Hook wire
(1) Remove the control box cover and terminal box cover and install the
connection cord and remote controller cord.
Remote controller cord
Terminal board
(Indoor unit)
Ceiling height
Normal
High ceiling 1
High ceiling 2
Low ceiling
1
–
–
–
–
2.5-3.0 m
(8.2-9.8 ft)
3.0-3.5 m
(9.8-11.5 ft)
More than 3.5 m
(More than 11.5 ft)
Less than 2.5 m
(Less than 8.2 ft)
2
OFF
ON
OFF
ON
3
OFF
OFF
ON
ON
DIP-SW4
5
ELECTRICAL WIRING
HOW TO CONNECT WIRING TO THE TERMINALS
A. For solid core wiring
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
the insulation to about 25 mm (15/16") of expose the solid wire.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
board.
(3) Using pliers, bend the solid wire to form a loop suitable for the
terminal screw.
(4) Shape the loop wire properly, place it on the terminal board and
tighten securely with the terminal screw using a screwdriver.
B. For strand wiring
(1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip
the insulation to about 10 mm (3/8") of expose the strand wiring.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal
board.
(3) Using a round terminal fastener or pliers, securely clamp a round
terminal to each stripped wire end.
(4) Position the round terminal wire, and replace and tighten the ter-
minal screw using a screwdriver.
A. Solid wire
Strip 25 mm (15/16")
Insulation
Loop
B. Strand wire
Strip 10 mm (3/8")
Round
terminal
Wire
Screw with
special washer
Round terminal
Terminal
board
Wire
Screw with
special washer
Round
terminal
2. INDOOR UNIT SIDE
WARNING
1 Before starting work, check that power is not being sup-
plied to the indoor unit and outdoor unit.
2 Match the terminal board numbers and connection cord
colors with those of the outdoor unit.
Erroneous wiring may cause burning of the electric
parts.
3 Connect the connection cord firmly to the terminal
board. Imperfect installation may cause a fire.
4 Always fasten the outside covering of the connection
cord with the cord clamp. (If the insulator is chafed,
electric leakage may occur.)
5 Always connect the ground wire.
(2) After wiring is complete, clamp the remote controller cord and con-
nection cord with the cord clamp.
Terminal box cover
Control box cover
Cord clamp
Connection cord
(To the outdoor unit)
Ceiling height setting
Set the DIP switch for the ceiling height according to the table below.
Remote
controller
Terminal board
OUTDOOR
UNIT
Connection
cord
6
8
1. INSTALLING THE REMOTE CONTROLLER
(1) Open the operation panel on the front of the remote controller, remove
the two screws indicated in the following figure, and then remove the
front case of the remote controller.
Front case
(back side)
Rear case
Connector
Remote
controller wires
Rear case
Connector
Front case
1. Red
2. White
3. Black
Binder
3. SETTING THE DIP SWITCHES
When using a battery (memory backup)
Change the DIP switch setting to use batteries. (The DIP switch is not set
to use batteries at the factory.)
Change DIP switch 1 No. 6 from OFF to ON.
If batteries are not used, all of the settings stored in memory will be de-
leted if there is a power failure.
Screws
2. ROUTING THE REMOTE CONTROLLER WIRES
(1) Install the remote controller wires to the terminals on the top of the
rear case as shown in the following figure.
(2) Fasten the wires with the binder.
(Example)
7
REMOTE CONTROLLER
SETTING
CAUTION
1 When detecting the room temperature
using the remote controller, please set
up the remote controller according to
the following conditions.
If the remote controller is not well set,
the correct room temperature will not
be detected, and thus the abnormal
conditions like “not cooled” or “not heated” will occur
even if the air conditioner is running normally.
• A location with an average temperature for the room
being airconditioned.
• Not directly exposed to the outlet air from the air-
conditioner.
• Out of direct sunlight.
• Away from the influence of other heat sources.
2 When installing the remote controller and cord near a
source of electromagnetic waves, separate the remote
controller from the source of the electromagnetic waves
and use shielded cord.
3 Do not touch the remote controller PC board and PC
board parts directly with your hands.
When installing the remote controller, remove the connector from the
front case. The wires may break if the connector is not removed and
the front case hangs down.
When installing the front case, connect the connector to the front case.
(2) Install the rear case to the wall, etc. with the two tapping screws.
Refer to the following information to install the remote controller wires.
SU
MO
TU
WE
TH FR
SA
4. SETTING THE ROOM TEMPERATURE DETEC-
TION LOCATION
The detection location of the room temperature can be selected from the
following three examples. Choose the detection location that is best for
the installation location.
A. Indoor unit setting (factory setting)
The room temperature is detected by the indoor unit temperature sensor.
A
B. Remote controller setting
The room temperature is detected by the remote controller temperature
sensor.
B
C
Indoor unit
When the THERMO SENSOR button is pressed, the lock display flashes
because the function is locked at the factory.
(1) Press the THERMO SENSOR button for
5 seconds or more to unlock the function.
The thermo sensor display flashes and then
disappears when the function is unlocked.
(2) Press the THERMO SENSOR button. The thermo sensor display ap-
pears.
(3) Press the THERMO SENSOR button again for 5 seconds or more to
lock the function. The thermo sensor display flashes and then remains
on when the function is locked.
(4) Make sure that the function is locked.
C.Indoor unit/remote controller setting
(room temperature sensor selection)
The temperature sensor of the indoor unit or the remote controller can be
used to detect the room temperature.
TEST RUN
(1) Stop the air conditioner operation.
(2) Press the MODE button and the FAN button simultaneously for 2 sec-
onds or more to start the test run.
Unit number (usually 0)
Error code
(3) Press the START/STOP button to stop the test run.
[SELF-DIAGNOSIS]
When the error indication “E:EE” is displayed, follow the following items to
perform the self-diagnosis. “E:EE” indicates an error has occurred.
1. REMOTE CONTROLLER DISPLAY
(1) Stop the air conditioner operation.
(2) Press the SET TEMP. buttons
simultaneously for
5 seconds or more to start the self-diagnosis.
Refer to the following tables for the description of each error code.
Test run display
(3) Press the SET TEMP. buttons simultaneously for
5 seconds or more to stop the self-diagnosis.
Ex. Self-diagnosis
Indoor unit No. 0 Indoor unit No. 1 Indoor unit No. 2 Indoor unit No. 3
Remote
controller
wire
Remote
controller
(2) Rotary switch setting (indoor unit)
Set the unit number of each indoor unit using the rotary switch on the
indoor unit circuit board.
The rotary switch is normally set to 0.
(3) DIP switch setting (remote controller)
Change DIP switch 1 No. 3 on the remote controller from OFF to ON.
Indoor unit
Rotary Switch
Remote controller
DIP Switch 1
2. DUAL REMOTE CONTROLLERS (OPTIONAL)
Two separate remote controllers can be used to operate the indoor units.
(1) Wiring method (indoor unit to remote controller)
(2) DIP switch setting (remote controller)
Set the remote controller DIP switch 1 No. 1 and 2 according to the
following table.
Number of
remote
controllers
Master unit
1 (Normal)
2 (Dual)
ON
OFF
OFF
OFF
DIP-SW 1 No. 1
DIP-SW 1 No. 2
Remote controller
DIP Switch 1
Number of
remote
controllers
Slave unit
1 (Normal)
2 (Dual)
–
ON
–
ON
DIP-SW 1 No. 1
DIP-SW 1 No. 2
SW2
1 2 3
1 2 3
1 2 3
ONOFF
1
2
3
4
5
6
ON
1 2 3 1 2 3 1 2 3
1 2 3
1 2 3
ONOFF
1
2
3
4
5
6
NO.
SW state
Detail
OFF ON
1 Invalidity Validity
★
Auto restart setting
2— —
★
Temperature correction
3— —
★
setting
1—
★
— Remote controller setting
2—
★
—
Air flow setting
3—
★
—
DIP-Switch 1
● Indoor unit
● Remote controller
[DIP-SWITCH SETTING]
DIP-Switch 4
OPENING THE DUCT
CONNECTION HOLE
Distribution duct
Distribution duct
Fresh air
CAUTION
1 When performing hole opening work, be careful not to
damage the drain pan.
2 When connecting the distribution duct, to make the air
flow easily, block the outlet port with the blower cover
insulation as shown by the hatched lines in the figure.
For the blocking direction, refer to blower cover insu-
lation figure.
1. DIMENSION
Screw position and connection hole which are fresh air duct and distribu-
tion duct.
45°
45°
ø100
ø70
12-ø3.3 self tapping screw holes (for 4 mm)
2. DISTRIBUTION DUCT AND FRESH AIR DUCT
HOLE PROCESSING
Use the distribution duct hole and fresh air duct hole by removing the
insulation material as shown below.
Cut
Cut
Cabinet
• Cut off the part (Cabinet) indicated by the arrow in the figure with
nippers, needle nose pliers, etc.
PART NO. 9370937039-02
NOTES
If the function to change the temperature sensor is used as shown in
examples A and B (other than example C), be sure to lock the detection
location. If the function is locked, the lock display
will flash when
the THERMO SENSOR button is pressed.
(1) Press the THERMO SENSOR button for 5 seconds or more to unlock
the function. The thermo sensor display flashes and then disappears
when the function is unlocked.
(2) Press the THERMO SENSOR button to select the temperature sen-
sor of the indoor unit or the remote controller.
1. GROUP CONTROL SYSTEM
A number of indoor units can be operated at the same time using a single
remote controller.
(1) Wiring method (indoor unit to remote controller)
Cabinet
Knife
Insulation
(Inner box)
10
1
2
3
O
F
F
SW 4
1
2
3
O
F
F
SW 1
Indoor unit PC board
Dip switch
(SW4)
Indoor unit
PC board
DAY OFF
DELETE SET
ENERGY
SAVE
THERMO
SENSOR
SET BACK
DAY
CLOCK ADJUST
3. AUTO RESTART
• When the air conditioner power was temporarily turned off by a power
failure etc., it restarts automatically after the power recovers.
(Operated by setting before the power failure)
The auto restart function can be
canceled.
(1) DIP switch setting (indoor unit)
Change the DIP switch (SW1-1)
on the indoor unit circuit board
from ON to OFF. The auto restart
function will be canceled.
Indoor unit
O
F
F
1
2
3
OFF
SW1
O
F
F
1
2
3
SW4
DIP Switch
2. CHECKING DRAINAGE
To check the drain, remove the water cover and fill with 2 to 3rof water as
shown in figure.
The drain pump operates when operating in the cooling mode.
Water cover
Drain pipe
Watering pot
9
SPECIAL INSTALLATION
METHODS
CAUTION
1 When setting the rotary switch and DIP switches, do
not touch any other parts on the circuit board directly
with your bare hands.
2 Be sure to turn off the main power.
Indoor unit
Indoor unit
Remote
controller
wire
Indoor unit
Master
unit
Slave
unit
• Open the holes and cut the insulation with a knife.
* Be careful not to damage the internal parts.
* Be careful not to cut yourself on the cutout in the metal plate.
* Please remove the insulation (inner box) left over after cutting.
• Connect the distribution duct.
* When mounting the duct, block the gap so that there is no cold air leakage.
* Insulate the duct and cut connection.
CAUTION
The air conditioner cannot take in fresh air by itself. When
connecting a fresh air duct, always use a duct fan.
Remote
controller
1. WIRING SYSTEM DIAGRAM
Error code Error contents
Communication error
(indoor unit
remote controller)
Communication error
(indoor unit outdoor unit)
Room temperature sensor open
Room temperature sensor short-circuited
Indoor heat exchanger temperature sensor open
Indoor heat exchanger temperature sensor short-
circuited
Outdoor heat exchanger temperature sensor
Power source connection error
Float switch operated
Outdoor temperature sensor
Discharge pipe temperature sensor
Model error
Indoor fan error
00
01
02
03
04
05
06
08
09
0A
0C
11
12
Error code Error contents
Outdoor signal error
Excessive outdoor pressure (permanent stop)
Compressor temperature sensor
Pressure switch error
IPM error
CT error
Active filter module (AFM) error
Compressor does not operate
Outdoor unit fan error
Communication error
(inverter multicontroller)
2 way valve sensor error
Expansion valve error
Connection indoor unit error
13
14
15
16
17
18
19
1A
1b
1C
1d
1E
1F
CAUTION
1 If the setting for a low ceiling is selected, the capacity
of the air conditioner decreases slightly.
2 Do not set any switches other than those specified in
this sheet. The air conditioner may not operate correctly
if any switches other than those specified are changed.
Install the remote controller wire so as not to be direct touched with
your hand.
DIP switch 1
Front case (back side)
ON
ON
OFF
1
2
3
4
5
6
DIP switch 2
Jumper
P. D 120 P. D 88
97 mm
160 mm (6-5/16")
334.2 mm (13-5/32")
113 mm
(4-7/16")
(★: Factory setting)
ON
★
Multiple units
Cooling only model
★ Validity
Validity
Invalidity
Invalidity
★ Invalidity
Invalidity
Detail
Dual remote controller setting
Group control setting
Model setting
AUTO changeover setting
Memory Backup setting
THERMO SENSOR button setting
ENERGY SAVE button setting
Horizontal airflow direction and swing button setting
Vertical airflow direction and swing button setting
Cannot be used.
Cannot be used.
No.
1
2
3
4
5
6
1
2
3
4
5
6
OFF
★
★ One unit
★
Heat & cool model
Invalidity
★ Invalidity
★ Validity
★ Validity
Validity
★ Validity
★ Fixed at OFF
★ Fixed at OFF
SW state
DIP-
switch 1
DIP-
switch 2
CAUTION
1 Be sure to refer the above diagram and do correct field
wiring.
Wrong wiring causes malfunction of the unit.
2 Check local electrical codes and also any specific
wiring instructions or limitation.
1
2
3
1
2
3
GG
1
2
3
L2
L1
INDOOR
INDOOR UNIT
OUTDOOR UNIT
TERMINAL
DISCON-
NECT
SWITCH
(FIELD
SUPPLY)
Grounding
line
14AWG
(Inter-unit)
Power lines
230/208 V
230/208 V
230/208 V
TERMINAL
Power supply line
Single-phase, 230/208 V
WARNING
Disconnect switch and circuit breaker for over current pro-
tection given in the table below is to be installed between
the indoor unit and the outdoor unit.
15A 240 V - 5A
Disconnect switch
Circuit breaker (or Fuse)
CIRCUIT
BREAKER
OR FUSE
(FIELD
SUPPLY)
Remote controller line
Temperature sensor
CAUTION
11
11
1 When select the “Remote
controller setting”, if the detected
temperature value between the
temperature sensor of the indoor
unit and the temperature sensor of
the remote controller varies significantly, it is likely
to return to the control status of temperature sensor
of the indoor unit temporarily.
22
22
2 As the temperature sensor of remote controller
detects the temperature near the wall, when there is a
certain difference between the room temperature and
the wall temperature, the sensor will not detect the
room temperature correctly sometimes.
Especially when the outer side of the wall on which
the sensor is positioned is exposed to the open air, it
is recommended to use the temperature sensor of the
indoor unit to detect the room temperature when the
indoor and outdoor temperature difference is
significant.
33
33
3 The temperature sensor of the remote controller is
not only used when there is a problem in the detection
of the temperature sensor of the indoor unit.
9370937039-02_IM_back.p65 9/2/10, 09:251
1
2
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