Friedrich MC24Y3F User manual

SPLIT TYPE
AIR CONDITIONER
(60Hz)
CASSETTE
type
Models
Indoor unit Outdoor unit
MC24Y3F MR24UY3F
CONTENTS
SPECIFICATIONS ...................... 1
DIMENSIONS .......................... 2
REFRIGERANT SYSTEM DIAGRAM ....... 4
CIRCUIT DIAGRAM ..................... 5
ERROR CONTENTS ....................
7INDOOR PCB CIRCUIT DIAGRAM ........
...... 8OUTDOOR PCB CIRCUIT DIAGRAM
11
DISASSEMBLY ILLUSTRATION .......... 13
PARTS LIST .......................... 21
STANDARD ACCESSORIES ............. 23

INDOOR UNIT HxWxD
DIMENSIONS
INDOOR UNIT Gross / Net
Gross / NetOUTDOOR UNIT
WEIGHT
POWER SOURCE
COOLING
RUNNING CURRENT
HEATING
INPUT WATTS
COOLING
HEATING
E.E.R.
COOLING
HEATING
STARTING CURRENT
MOISTURE REMOVAL
AIRCIRCULATION -High
FAN MOTOR
TYPE
DISCRIMINATION
REFRIGERANT R410A
DISCRIMINATION
HIGH-SPEED
HIGH-SPEED
INDOOR UNIT
( Cool / Heat ) MED-SPEED
LOW-SPEED
DISCRIMINATION
OUTDOOR UNIT
( Cool / Heat )
TYPE COOLING & HEATING
INDOOR UNIT MC24Y3F
OUTDOOR UNIT MR24UY3F
COOLING CAPACITY
HEATING CAPACITY
44 kg / 34 kg
70 kg / 64 kg
9.2 / 10.1 A
10.4 / 11.4 A
2.10 / 2.10 kW
2.37 / 2.37 kW
3.10 / 3.10 kW/kW
3.00 / 3.00 kW/kW
9.5 A
3.0 l/hr
1,050 m3/hr
1 230 / 208 V 60Hz
Total enclosed type, 4 poles,
Inverter, Twin Rotary
TNB220FPBM9
4 lb 3 oz, 1,900 g
S-LOW-SPEED
MFA-24RPT
490 r.p.m. / 440 r.p.m.
430 r.p.m. / 380 r.p.m.
360 r.p.m. / 330 r.p.m.
MFE-45ROM
850 r.p.m. / 900 r.p.m.
- / 250 r.p.m.
22,200 / 22,200 BTU/h
24,200 / 24,200 BTU/h
ELECTRICAL DATA
COMPRESSOR
HxWxDOUTDOOR UNIT
32-3/4" x 35-1/2" x 13" inch
( 830 x 900 x 330 mm )
9-3/4" x 32-3/4" x 32-3/4" inch
( 246 x 830 x 830 mm )
2006.05.25 1
SPECIFICATIONS
REFRIGERANT CHARGE (R410A)
MAX PIPE LENGTH
MAX PIPE HEIGHT
Pipe Length 49 ft. (15 m)
66 ft. (20 m)
FULL CHARGE
AMOUNT
98 ft. (30 m)
131 ft. (40 m)
164 ft. (50 m)
50 m
30 m
4 lb 3 oz (1,900 g)
4 lb 10 oz (2,100 g)
5 lb 8 oz (2,500 g)
6 lb 6 oz (2,900 g)
7 lb 5 oz (3,300 g)
ADDITIONAL REFRIGERANT
NOISE LEVEL
HIGH-SPEED
INDOOR UNIT MED-SPEED
LOW-SPEED
COOL
HEAT
45.0 dB
43.0 dB
38.0 dB
OUTDOOR UNIT
53.0 dB
55.0 dB
0.424 oz / ft. (40g/m)

INDOOR UNIT
unit : inch (mm)
DIMENSIONS
2006.05.18 2
9-3/4" (246)
9-1/4" (235)
9-25/32"
(248.5)
11-3/4" (298.5)
12" (305.5)
1-3/16" (30)
37" (940)
37" (940)
2-3/8" (60)
Drain inside Dia. ø1-1/4" (ø32)
outside Dia. ø1-1/2" (ø37)
3-15/16" (100) 2-3/4" (70)
7-7/8" (200)
9-25/32"
(248.5)
11-3/4" (298.5)
12" (305.5)
2-3/8" (60)
3-15/16" (100)
2-3/4" (70) 29-17/32" (750)
32-3/4" (830)
29-17/32" (750)
32-3/4" (830)

OUTDOOR UNIT
unit : inch (mm)
2006.05.18 3
3"(77)
35-1/2" (900)
32-3/4" (830)
17-3/8" (440)
7/8" (21)
3/8" (9)
15-3/4" (400)
13" (330)
1-1/4"
(31)
1/2"
(12)
7-3/4" (196)
5-3/4" (147)
6-3/4" (170)
3-7/8" (99)
14-5/8" (370)
25-5/8" (650)
Air Flow

Evaporator
OUTDOOR UNIT
Pressure
Check Valve
Condenser
4-way
Valve
High Pressure
Switch
Accumulator
Muffler
Compressor
Expansion
Valve Refrigerant Pipe
9.52mm (3/8")
Charging Valve
Charging
Valve
Refrigerant Pipe
15.88mm (5/8")
INDOOR UNIT
Strainer
Strainer
REFRIGERANT SYSTEM DIAGRAM
: COOL
: HEAT
2006.05.18 4

CIRCUIT DIAGRAM
INDOOR UNIT
2006.05.18 5
YELLOW
YELLOW
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
BLACK
PURPLE
BLUE
RED
WHITE
WHITE
RED
RED
WHITE
WHITE
WHITE
GREEN /
YELLOW
WHITE WHITE
YELLOWYELLOW
ORANGE ORANGE
RED RED
BROWN BROWN
WHITE
BLACK
RED
GREEN
BLACK WHITE RED
GRAY GRAY
BLACK
BLACK
12
1212
12
1
6
5
3
2
1
6
5
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
5
4
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
2
1
2
1
2
1
2
1
2
1
2
CN7 CN8
CN4 CN5
CN1
CN16 CN6
CN17
CN15 CN10
321
N
Use T3.15A-250V Fuse on F101
TERMINAL
TO REMOTE CONTROL UNIT
PIPE TEMPERATURE THERMISTOR
ROOM TEMPERATURE THERMISTOR
STEP MOTOR
M
FLOAT SWITCH
DRAIN PUMP MOTOR
M
FAN MOTOR
FM
FAN MOTOR
CAPACITOR
G
TERMINAL
TO OUTDOOR UNIT
3
2
(N)
1
CONTROLLER PCB ASSY
POWER SUPPLY
PCB ASSY
L

OUTDOOR UNIT
2006.05.18 6
ORANGE
YELLOW
WHITE
BLUE
BROWN
RED
BLUE
YELLOW
WHITE
BLACK
RED
BLACK
BLACK
RED
RED
BLACK
BROWN
BLUE
BROWN
BLACK
RED
BROWN
BLACK
BLACK
WHITE
BLACK
BLACK
WHITE WHITE
GREEN
BLACK
WHITE
BLACK
RED
YELLOW
BLUE
YELLOW
ORANGE
RED
BROWN
BLACK
BLACK
WHITE
BROWN
BLACK
BLACK
WHITE
WHITE
RED RED
RED
CN1
CN1
CN34
W9 W8
W200
W11
W10
W17
W16
CN27
CN802
W12
W13
CN407
CN30
CN37
W303
W304
W305
CN21 CN22 CN23 CN26 CN25
1
6
5
4
3
2
1432
1
6
5
4
3
2
1
5
4
3
2
1
3
2
1
2
132
12 12 12 12 12
1
6
5
4
3
2
132
TM102
TM101 W3 W6 W7 W4 W5
GG
2 (N)
13
LN
EARTH EARTH
EXPANSION VALVE COIL
EV
FM FANMOTOR
SOLENOID COIL
4WV
HIGH PRESSURE SWITCH
FUSE
F4 T 5A-250V
FUSE
F2 T 3.15A-250V
EMI FILTER
2T
L1
L2
P
N
+-
TERMINAL
CHOKE COIL
COMPRESSOR
CONNECTOR
EMI FILTER
1T
U
V
W
W
U
V
DISCHARG TEMPERATURE
THERMISTOR
PIPE TEMPERATURE
THERMISTOR
OUTDOOR TEMPERATURE
THERMISTOR
COMPRESSOR TEMPERATURE
THERMISTOR
HEAT SINK TEMPERATURE
THERMISTOR
POWER SUPPLY PCB ASSY
CONTROLLER PCB ASSY
ACTIVE
FILTER
MODULE

Model : MC24Y3F CONTROLLER PCB ASSEMBLY
K01AL-050LHSE-C1
2006.05.25 7
INDOOR PCB CIRCUIT DIAGRAM

Model : MR24UY3F
POWER SUPPLY PCB ASSY
K04BA-0500HUE-P0
CONTROLLER PCB ASSY
K04AW-0502HUE-C1
INVERTER ASSEMBLY
EZ-005FHUE
2006.05.25 8
OUTDOOR PCB CIRCUIT DIAGRAM

600/450V x 4
2006.05.25 9
CONTROLLER PCB ASSEMBLY
K04AW-0502HUE-C1
Model : MR24UY3F

5V
TM101
TM102
C112
0.015
<YE>
C113
0.015
<YE>
C111
3.3
<LE>
L4
RCH4730-021PF07
C107
3.3
<LE>
TM100
L2
N200500K1D7C
CT1
CT-1B
5V D60
DAN217U
C64
0.1
<F>
R68 22K
<1/10W>
C65
0.1
<F>
VR1
B2K
+
R61 3.74K
<1/10W>
(1%)
C60
220/16V
<PJ>
R60 1.0K
<1/10W>
(1%)
SA100
RA-302M
C106
3.3
<LE>
C104
0.033
<YE>
C105
0.033
<YE>
C101
3.3
<LE>
VA101
470V
<TNR>
VA102
470V
<TNR>
B
B
B
B
B
B
B
BLACK
WHITE
TO INDOOR UNIT
POWER SOURCE
230V
60Hz
EARTH
AC VOLT OUT
W5
W6
BLACK
WHITE
W7
GREEN
W3
W8
BLACK
WHITE
W9
W4
L1
RCH4730-021PF07
CN1
B3B-XASK-1-A
WHITE
CT OUT
1
2
3
POWER SUPPLY PCB ASSEMBLY
K04BA-0500HUE-P0
2006.05.25 10
Model : MR24UY3F

ERROR CONTENTS
(indoor unit)
SU MO TU WE TH FR SA
(1) Stop the air conditioner operation.
(2) Press the master control button and the fan control button simultane-
ously for 2 seconds 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 temperature buttons simultaneously for 5 sec-
onds 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 temperature buttons simultaneously for 5 sec-
onds or more to stop the self-diagnosis.
Ex. Self-diagnosis
2. CHECKING DRAINAGE
To check the drain, remove the water cover and fill with 2 to 3 of water as
shown in figure.
The drain pump operates when operating in the cooling mode.
Water cover
Drain pipe
Watering pot
Error code Error contents
Communication error
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 abnormal
Indoor fan abnormal
01
Communication error
00
02
03
04
05
06
08
09
0A
0c
11
12
Error code Error contents
Outdoor signal abnormal
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
2006.05.25 11
(indoor unit remote controller)
(indoor unit outdoor unit)

ERROR CONTENTS
(outdoor unit)
1. Make a TEST RUN in accordance with the in-
stallation instruction sheet for the indoor unit.
2. OUTDOOR UNIT LEDS
Error contents
Communication error
(Indoor unit - Outdoor unit)
Discharg pipe temperature sensor
Outdoor heat exchanger temperature sensor
Outdoor temperature sensor
Compressor temperature sensor
Heat sink temperature sensor
Pressure switch abnormal
IPM error
Compressor rotor position cannot detect
Compressor cannot operate
Outdoor fan abnormal (upper fan)
Outdoor fan abnormal (lower fan)
No error
LED
1 flash
2 flash
3 flash
4 flash
7 flash
8 flash
9 flash
12 flash
13 flash
14 flash
15 flash
16 flash
lighting
2006.05.18 12
When a malfunction occurs in the outdoor unit, the LED on
the circuit board lights to indicate the error. Refer to the fol-
lowing table for the description of each error according to the
LED.
SPECIAL INSTALLATION
SETTING
PUMP DOWN (Refrigerant collecting operation)
1. When the product is stopped:
Perform the following procedures to collect the refrigerant
when moving the indoor unit or the outdoor unit.
1
2
3
4
Press the PUMP DOWN switch on the outdoor unit.
(The LED on the outdoor unit circuit board lights.)
The pump down operation (cooling operation) be-
gins right away. After oparation starts, close the
three-way valve (liquid).
After2-3minutes, operation stops. Close the three-
way valve (gas) within one minute after operations
stops.
The LED will go out three minutes after it stops.Dis-
connect the power supply after confirming that the
LED has gone out.
*When the pump down operation is repeated, temporarily disconnect
the power supply after opening the closed valves (both liquid and gas).
Reconnect the power supply after2-3minutes and perform the pump
down operation.
*When the start of the operation after pump down operation has been
completed, temporarily disconnect the power supply after opening the
closed valves (both liquid and gas).
Reconnect the power supply after 2-3 minutes and be sure to perform
a test operation for cooling.
2. When the product is operating:
1
2
3
4
Press the PUMP DOWN switch on the outdoor unit.
The LED on the outdoor unit circuit board lights, and
operation stops. At this point, recovery has not been
completed, so do not close the two- and three-way
valves.
The pump down operation (cooling operation) be-
gins after three minutes. Close the three-way valve
(liquid) after operation starts.
After2-3minutes, operation stops. Close the three-
way valve (gas) within one minute after operations
stops.
The LED will go out three minutes after it stops. Dis-
connect the power supply after confirming that the
LED has gone out.
3-way valve
(Liquid)
3-way valve
(Gas)
DANGER
This part (Choke coil) generates high voltages.
Never touch this part.
PUMP DOWN SW (SW2)

692
544
710
469
468
858
487
71
71
858
61
240
93
545
481 481
481
544
705
847
542
705
847
692
690
692
847
543 543
544
544
122
543
122
847
692
690
692
847
543
847
122
690
847
692
226
338
522
122 122
834-2
876-2
472-4
253-A
472-2
481-1
472-3
777-2
777-1
472-1
472-5
472-5
472-5
472-5
DISASSEMBLY
ILLUSTRATION
INDOOR UNIT
2006.05.25 13

479
467 127
835 482 798
835 484
465
244
563
814
484
484 464
462
164
484
168
474
477
223
457 488
160
457
514
803
187
460-1
834-1
476-2
460-2
197
197
565
337-1
146-2
146-1
337-1
337-2
INDOOR UNIT
541
334
541-1
815-1
2006.05.18 14

INDOOR UNIT
236
380
380
380
195
625
234
212 875
34
32
815-2
320-1
320-1
381-4
731-2
381-4
2006.05.18 15

INDOOR UNIT
138
735
184-1
235
896
2006.05.18 16
187

OUTDOOR UNIT 1
6
3
4
5
2
2006.05.25 17

17
18
10
13 11
9
15 14
8
OUTDOOR UNIT
2006.05.25 18

22
23
31
20
29
12
28
12
19
24
26
27
25
30
OUTDOOR UNIT
2006.05.24 19