Power supply
Capacity
Dehumidification
Air flow
Power outlet
Running current
Power input
Auxiliary heater
Power factor
Starting current
Compressor motor current
Fan motor current
kW
R/h
K/h
A
A
W
A(kW)
%
A
A
A
W
"
"
"
mm
mm
mm
mm
mm
mm
kg
kg
dB
dB
rpm
rpm
kg
cc
k"
k"
Capacity
Electrical
data
Coefficient of performance(C.O.P)
Compressor
Indoor
fan motor
Outdoor
fan motor
Dimensions
Indoor unit
Indoor unit
Width
Height
Depth
Width
Height
Depth
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
RT11(at 25:)
RT12(at 25:)
Sound level
(Hi)
Fan speed
(Hi)
Fan speed
regulator
INDOOR FAN CAPACITOR
FUSE (3.15A)
DC/DC CONVERTER
INDOOR FAN MOTOR(INNER FUSE)
W
WHT
DISPLAY &
RECEIVER
P.C.BOARD
NAME
AUTO RESTART
ASSEMBLY
SYMBOL
CN
101
5
5
MV
NR11
RT11
RT12
W
4
52C
3
W
TRANS
ELECTRONIC CONTROL P.C BOARD
CN
104
CN
113
5
3
2
1
CN201
CN
151
4
6
6
MV
SW/THERMO
P.C.BOARD
RT11
NAMENAME
VANE MOTOR
VARISTOR
ROOM TEMPERATURE THERMISTOR
COIL TEMPERATURE THERMISTOR
HIC1
F11
C11
NR11
SR144
SR142
SR143
SYMBOL
SR142~
SR144
TB
52C
2
CN
112
LDCOM
LDC11
LDC12
LDFH
LDFL
LDFM
2
WHT
ORN
RED
BLK
BLU
YLW
SOLID STATE RELAY
TERMINAL BLOCK
CONTACTOR
1
2
3
7
4
6
5
8
RT12
WHT
ORN
RED
BRN
BLK
BLU
YLW
GRN/YLW
MF
MUCF-13NV -
OUTDOOR UNIT
E3
MODEL WIRING DIAGRAM
NOTE : 1. Use copper conductors only (For field wiring).
2. “W” shows the terminals with a lock mechanism,
so they cannot be removed when you pull the lead wire.
Be sure to pull the lead wire by pushing the locking lever
(projected part) of the terminal with a finger.
7
1Slide the sleeve.
2Pull the wire while pushing the locking lever.
5m regardless of which unit,
indoor or outdoor position is high.
A: Refrigerant piping
Max.length
15m(49ft)
ADDITIONAL REFRIGERANT CHARGE (R-22 : g)
5m(16ft)
Max. Height difference
✽
8
8
Air in
Air out
Wet-and dry-bulb
thermometers
FRONT VIEW
Dry-bulb
thermometers
BACK VIEW
PERFORMANCE CURVES
MCF-13NV -
The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions,
Since operating conditions vary according to the areas where these units are installed. The following information has been
provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.
E3
(1) GUARANTEED VOLTAGE
Rated voltage : ±10% (198~264V), 50Hz
(2) AIR FLOW
Air flow should be set at MAX.
(3) MAIN READINGS
(1) Indoor intake air wet-bulb temperature : ˚CWB
(2) Indoor outlet air wet-bulb temperature : ˚CWB
(3) Outdoor intake air dry-bulb temperature : ˚CDB
(4) Total input : W
Indoor air wet-bulb temperature difference on the left side of the chart on this page shows the difference between the
indoor intake air wet-bulb temperature and the indoor outlet air wet-bulb temperature for your reference at service.
How to measure the indoor air wet-bulb temperature difference
1. Attach at least 2 sets of wet-and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets of
wet-and-dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air speed
is high.
2. Attach at least 2 sets of dry-bulb thermometers to the outdoor air intake.
Cover the thermometers to prevent direct rays of the sun.
3. Check that the air filter is cleaned.
4. Open windows and doors of the room.
5. Press the EMERGENCY OPERATION switch to start the EMERGENCY COOL MODE.
6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.
7. 10 minutes later, measure temperature again and check that the temperature does not change.
INDOOR UNIT
10.4
9.5
8.7
7.8
7.0
6.2
OUTDOOR UNIT
E3
MCF-13NV-
intake
intake
9
OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
202530
0.3
0.4
0.5
0.6
0.7
0.8
202530
3
4
5
6
7
8
Ambient temperature (:)
Ambient humidity(%)
18
506070
32
(:)
(%)
Ambient temperature (:)
Ambient humidity(%)
18
506070
32
(%)
Outdoor unit current (A)
Outdoor low pressure
7
6
5
4
3
8
(kgf/F•G)(MPa•G)
(:)
220-240V
220-240V
COOL operation
1 Both indoor and outdoor units are under the same temperature/humidity condition
Dry Bulb temperature (˚C)
20
25
30
Relative humidity (%)
50
60
70
2 Air flow should be set at MAX.
3 The unit of pressure has been changed to MPa on the international system of units(SI unit system).
NOTEQ : Total capacity (kW) SHF : Sensible heat factor
SHC : Sensible heat capacity (kW) INPUT : Total power input (W)
E3E3
14
9
RESETRESET
CLOCKCLOCK
MICROPROCESSOR CONTROL
WIRELESS REMOTE CONTROLLER
INDOOR UNIT DISPLAY SECTION
OPERATION INDICATOR
The operation indicator at the right side of the indoor
unit indicates the operation state.
Operation Indicator
lamp
lighting
not lighting
MCF-13NV -
E3
Once the operation mode are set, the same operation mode
can be repeated by simply turning the
OPERATE/STOP(ON/OFF) button ON.
Indoor unit receives the signal with a beep tone.
When the system turns off, 3-minutes time delay will operate
to protect system from overload and compressor will not
restart for 3 minutes.
9-1. “I FEEL CONTROL”
( ) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button on the remote
controller. OPERATION INDICATOR lamp of the indoor
unit turns on with a beep tone.
(2) Select “I FEEL CONTROL” ( )mode with the
OPERATION SELECT button.
(3) The operation mode is determined by the room
temperature at start-up of the operation.
Initial room temperature
25: or more
more than 13:,
less than 25:
Mode
COOL mode of
"I FEEL CONTROL"
DRY mode of
"I FEEL CONTROL"
● Once the mode is fixed, the mode does not change by
room temperature afterwards.
● Under the ON-TIMER ( )operation, mode is
determined according to the room temperature at set
time the operation starts.
● When the system is stopped with the
OPERATE/STOP(ON/OFF) button on the remote
controller, and restarted within 2 hours in “I FEEL
CONTROL” ( )mode, the system operates in previous
mode automatically regardless of the room temperature
Example
Previous operation
COOL mode of
“I FEEL CONTROL”
Restart
COOL mode of
“I FEEL CONTROL”
or COOL mode
.
Indication
Operation state
This shows that the air
conditioner is operating
to reach the target temperature.
Please wait until the
target temperature is
obtained.
This shows that the
room temperature is
approaching the target
temperature.
Difference
between set
temperatuer
and room
temperature
Approx. 2 :
or more
Approx. 2 :
or less
When the system is restarted after 2 hours and more, the
operation mode is determined by the room temperature at
start-up of the operation.
Example
Restart
COOL or DRY mode of
Previous operation
COOL mode of “I FEEL
CONTROL” or COOL
mode
“I FEEL CONTROL” that
is determined by room
temperature at start-up
of the operation.
15
(4) The initial set temperature is decided by the initial room temperature.
OFF
ON
Indoor fan
(continuously at set speed)
OFF
ONON
Compressor
Outdoor fan
1deg.
4deg.
2deg.
1.7deg.
Mode
Initial room temperature
Initial set temperature
COOL mode of
"I FEEL CONTROL"
DRY mode of
"I FEEL CONTROL"
26: or more
25: to 26:
more than 13:, less than 25:
Initial room temperature
minus 2:
Initial room temperature
minus 2:
24:
❈1 When the system is restarted with the remote controller, the system operates with the previous set temperature
regardless of the the room temperature at restart.
The set temperature is calculated by the previous set temperature.
(5) TEMPERATURE buttons
In “I FEEL CONTROL” ( ) mode, set temperature is decided by the microprocessor based on the room temperature.
In addition, set temperature can be controlled by TOO WARM or TOO COOL buttons when you feel too warm or too cool.
Each time the TOO WARM or TOO COOL button is pressed, the indoor unit receives the signal and emits a beep tone.
● Fuzzy control
When the TOO COOL or TOO WARM button is pressed, the microprocessor changes the set temperature, considering
the room temperature, the frequency of pressing TOO COOL or TOO WARM button and the user’s preference to heat or
cool. So this is called “Fuzzy control”, and works only in “I FEEL CONTROL” mode.
In DRY mode of “I FEEL CONTROL”, the set temperature doesn’t change.
▲TOO
COOL… To raise the set temperature 1~2 degrees(°C)
▼ TOO
WARM … To lower the set temperature 1~2 degrees(°C)
❈1
— COOL mode of “I FEEL CONTROL” —
1. Indoor fan speed control
Indoor fan operates at the set speed by FAN SPEED CONTROL button.
In Auto the fan speed is as follows.
Initial temperature difference Fan speed
Room temperature minus set temperature : 2 degrees or more·········································Hi
Room temperature minus set temperature : Between 1 and 2 degrees·····························Me
Room temperature minus set temperature : less than 1 degree·········································Lo
2. Coil frost prevention
① Temperature control
When the indoor coil thermistor RT12 reads -1°C or below, the coil frost prevention mode starts immediately.
However, the coil frost prevention doesn’t work after 5 minute since the compressor has started.
The indoor fan operates at the set speed and the compressor stops for 5 minutes.
After that, if RT12 still reads below -1°C, this mode prolonged until the RT12 reads over -1°C.
② Time control
When the three conditions as follows have been satisfied for 1 hour and 45 minutes, compressor stops for 3 minutes.
a. Compressor has been continuously operating.
b. Indoor fan speed is Lo or Me.
c. Room temperature is below 26°C.
When compressor stops, the accumulated time is cancelled and when compressor restarts, time counting starts from
the beginning.
Time counting also stops temporarily when the indoor fan speed becomes Hi or the room temperature exceeds 26°C.
However, when two of the above conditions (b. and c.) are satisfied again. Time accumulation is resumed.
Operation chart
Example
Difference between room
temperature and set
temperature during operation.
16
—DRY mode of “I FEEL CONTROL”—
ON
OFF
Thermostat
Indoor fan
Outdoor fan
Compressor
8 min.
1 min.
4 min.
3 min.
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ONONON
ON
35
30
25
20
15
10
:
10 15 20 25 30 35
Set temperature
Initial room temperature
Set temperature and
initial room temperature in DRY mode
:
The system for dry operation uses the same refrigerant circuit as the cooling circuit.
The compressor and the indoor fan are controlled by the temperature.
By such controls, indoor air flow amounts will be reduced in order to lower humidity without much room temperature
decrease.
1. Indoor fan speed control
Indoor fan operates at the set speed by FAN SPEED CONTROL button.
However, in AUTO fan operation, fan speed becomes Lo.
2. The operation of the compressor and indoor / outdoor fan
Compressor operates by temperature control and time control.
Set temperature is controlled to fall 2°C from initial room temperature.
Indoor fan and outdoor fan operate in the same cycle as the compressor.
• When the room temperature is 23°C or over:
When the thermostat is ON, the compressor repeats 8 minutes ON and 3 minutes OFF.
When the thermostat is OFF, the compressor repeats 4 minutes OFF and 1 minute ON.
• When the room temperature is under 23°C:
When the thermostat is ON, the compressor repeats 2 minutes ON and 3 minutes OFF.
When the thermostat is OFF, the compressor repeats 4 minutes OFF and 1 minute ON.
Operation time chart
Example
3. Coil frost prevention
• The operation is as same as coil frost prevention during COOL mode of “I FEEL CONTROL”.
• Indoor fan operates at the set speed and the compressor stops for 5minutes, because protection (Coil frost
prevention)has the priority. However, when coil frost prevention works while the compressor is not operating, it’s speed
becomes Lo.
9-2. COOL ( ) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
OPERATION INDICATOR lamp of the indoor unit turns on with a
beep tone.
(2) Select COOL mode with the OPERATION SELECT button.
(3) Press the TEMPERATURE buttons.
(TOO WARM or TOO COOL button) to select the desired
temperature.
The setting range is 16 ~ 31°C
✻ Indoor fan continues to operate regardless of thermostat’s OFF-
ON at set speed.
✻ Coil frost prevention is as same as COOL mode of “I FEEL
CONTROL”.
9-3. DRY ( ) OPERATION
(1) Press OPERATE/STOP(ON/OFF) button.
OPERATION INDICATOR lamp of the indoor unit turns on with a
beep tone.
(2) Select DRY mode with the OPERATION SELECT button.
(3) The microprocessor reads the room temperature and determines the
set temperature. Set temperature is as shown on the right chart.
Thermostat (SET TEMP.) does not work.
The other operations are as same as DRY mode of “I FEEL CONTROL”.
(4) DRY operation will not function when the room temperature is 13°C or below.
(5) When DRY operation functions, the fan speed is lower than cool operation.
17
9-4. FAN ( ) OPERATION
1
2
3
4
5
AUTO
4
1
1
2
3
4
5
(1) Press OPERATE/STOP (ON/OFF) button.
(2) Select FAN mode with the OPERATION SELECT button.
(3) Select the desired fan speed. When AUTO, it becomes Lo.
Only indoor fan operates.
Outdoor unit does not operate.
9-5. AUTO VANE OPERATION
(1) Vane motor drive
This model is equipped with a stepping motor for the vane. The rotating direction, speed, and angle of the motor are
controlled by pulse signals (approx. 12V) transmitted from indoor microprocessor.
(2) Each time the VANE CONTROL () button is pressed, angle of horizontal vane is changed in sequence, from 1, 2, 3,
4, 5 to AUTO.
(3) Positioning
The vane is once pressed to the vane stopper below to confirm the standard position and then set to the desired angle.
Confirming of standard position is performed in case of follows.
(a) When the OPERATE/STOP(ON/OFF) button is pressed.
(b) When the vane control is changed from AUTO to MANUAL.
(c) When the SWING is finished.
(d) When the test run starts.
(e) When the power supply turns ON.
(4) VANE AUTO mode
In VANE AUTO mode, the microprocessor automatically determines the vane angle and operation to make the optimum
room-temperature distribution.
1. In COOL and DRY operation
Vane angle is fixed to position 1.
2. In FAN operation
Vane angle is fixed to position 4.
(5) STOP (operation OFF) and ON-TIMER standby
When the following cases occur, the vane returns to the closed position.
(a) When the OPERATE/STOP (ON/OFF) button is pressed (POWER OFF).
(b) When the operation is stopped by the emergency operation.
(c) When the ON-TIMER is on standby.
(6) Dew prevention
During COOL or DRY operation at Position 4 or 5 when the compressor cumulative operation time exceeds 1 hour, the
angle of horizontal vane automatically changes to Position 1 for dew prevention.
(7) SWING MODE ()
By pressing the SWING () button, horizontal vane swings vertically between Position 1 and 5. The remote controller
displays “”.
If the VANE CONTROL() button or SWING () button is pressed during SWING mode or the operation stops or
changes to other mode, SWING mode is released.
18
9-6. TIMER OPERATION
1. How to set the timer
(1) Press OPERATE/STOP(ON/OFF) button to start the air conditioner.
(2) Check that the current time is set correctly.
NOTE : Timer operation will not work without setting the current time. Initially “AM0:00” blinks at the current time display of
TIME MONITOR, so set the current time correctly with CLOCK SET button.
(3) Press ON-TIMER, OFF-TIMER button to select the operation.
“” button ... AUTO START operation (ON timer)
“” button ... AUTO STOP operation (OFF timer)
(4) Press HR. and MIN. button to set the timer. Time setting is 10-minute units.
HR. and MIN. button will work when “” or “” mark is flashing.
These marks disappear in 1 minute.
After setting the ON timer, check that OPERATION INDICATOR lamp of the indoor unit lights.
NOTE1 : Be sure to place the remote controller at the position where its signal can reach the air conditioner even during
TIMER operation, or the set time may deviate within the range of about 10 minutes.
NOTE2 : Reset the timer in the following cases, or the set time may deviate and other malfunctions may occur.
● A power failure occurs.
● The circuit breaker functions.
2. Cancel
TIMER setting can be cancelled with the TIMER CONTROL buttons. (“” or “”)
To cancel the ON timer, press the “” button.
To cancel the OFF timer, press the “” button.
TIMER is cancelled and the display of set time disappears.
PROGRAM TIMER
●The OFF timer and ON timer can be used in combination.
● “➝” and “” display show the order of the OFF timer and ON timer operation.
(Example 1) The current timer is 8:00 PM.
NOTE : TIMER setting will be cancelled by power failure or breaker functioning.
➝
The unit turns off at 11:00 PM, and on at 6:00 AM.
(Example 2) The current time is 11:00 AM.
The unit turns on at 5:00 PM, and off at 9:00 PM.
19
9-7. EMERGENCY-TEST OPERATION
When the remote controller is missing, has failed or the batteries run down, press the EMERGENCY OPERATION
switch on the front of the indoor unit. The unit will start and the OPERATION INDICATOR lamp will light.
The first 30 minutes of operation is the test run operation. This operation is for servicing. The indoor fan speed runs at
high notch and the system is in continuous operation. (The thermostat is ON)
After 30 minutes of test run operation the system shifts to EMERGENCY COOL MODE with a set temperature of 24˚C.
The fan shifts to Me notch.
This operation continues until the EMERGENCY OPERATION switch is pressed again or the unit receives any signal from
the remote controller. In case of latter normal operation will start.
The coil frost prevention works even in this operation.
In the test run or emergency operation, the horizontal vane operates in VANE AUTO mode.
NOTE : Do not press the EMERGENCY OPERATION switch during normal operation.
EMERGENCY
OPERATION switch
OPERATION INDICATOR lamp
Press once <Cool>
Press once again <Stop>
9-8. AUTO RESTART FUNCTION
When the indoor unit is controlled with the remote controller, the operation mode, set temperature, and the fan speed
are memorized by the the auto restart P.C. board.
The “AUTO RESTART” function sets to work the moment the power has restored after power failure. Then, the unit will
restart automatically. However if the unit is operated in “I FEEL CONTROL” mode, before power failure, the operation is
not memorized. In “I FEEL CONTROL” mode, the operation is decided by the initial room temperature.
NOTE :
•The operation settings are memorized when 10 seconds have passed after the remote controller was operated.
•If the main power is turned off or a power failure occurs while AUTO START/ STOP timer is active, the timer setting is
cancelled.
•If the unit has been off with the remote controller before power failure, the auto restart function does not work as the
power button of the remote controller is off.
•To prevent breaker off due to the rush of starting current, systematize other home appliances not to turn on at the
same time.
•When some air conditioners are connected to the same supply system, if they are operated before power failure, the
starting current of all the compressors may flow simultaneously at restart.
Therefore, the special counter-measures are required to prevent the main voltage-drop or the rush of the starting
current by adding to the system that allows the units to start one by one.
20
SERVICE FUNCTIONS10
MCF-13NV -
E3
10-1. TIMER SHORT MODE
For service, set time can be shortened by short circuit of JPG and JPS on the electronic control P.C. board.
The time will be shortened as follows.
3-minutes time delay : 3-minutes → 3-seconds.
AUTO START : 1 hour → 1-minute
AUTO STOP : 1 hour → 1-minute
Short the connector during the timer mode.
}
10-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION
A maximum of 4 indoor units with wireless remote controllers can be used in a room. In this case, to operate each
indoor unit individually by each remote controller, P.C. boards of remote controller must be modified according to the
number of the indoor unit.
How to modify the remote controller P.C. board
Remove batteries before modification.
The board has a print as shown below;
“J1” and “J2” Jumper wires
NOTE : Fore remodelling, take out the batteries at first.
After finish remodelling, put back the batteries then push the RESET button.
The P.C. board has the print “J1” and “J2”. Jumper wires are mounted to each “J1” and “J2”. Cut J1 and J2
according to the number of indoor unit as shown in Table 1.
After modification, push the RESET button.
Table1.
No.1 unit
No.2 unit
No.3 unit
1 unit operation
No modification
2 units operation
Same as at left
Cut J1
3 units operation
Same as at left
Same as at left
Cut J2
No.4 unit
NOTE : At power supply failure or installation, indoor unit deletes the memory about remote controller. When
the power supply is turned on and indoor unit receives the first signals from the remote controller, the remote
controller number is designated as the indoor unit number. Therefore at and after the second time indoor unit
accepts the remote controller of the initial setting number.
At setting-error, turn the power supply off to cancel the individual operation, and then turn the power supply on
to restart the setting.
10-3. RELEASE OF AUTO RESTART FUNCTION
The jumper line is soldered with “JHA (refer to page 27)” on the indoor electronic control P.C. board.
Remove the auto restart P.C. board from “Connector CN104”.
4 units operation
Same as at left
Same as at left
Same as at left
Cut both J1 and J2
21
11
RESET button
TROUBLESHOOTING
MCF-13NV -
E3
11-1. Cautions on troubleshooting
1. Before troubleshooting, check the following:
1) Check the power supply voltage.
2) Check the indoor/outdoor connecting wire for mis-wiring.
2. Take care the following during servicing.
1) Before servicing the air conditioner, be sure to first turn off the remote controller to stop the main unit, and then after
confirming the horizontal vane is closed, turn off the breaker.
2) When removing the electronic control P.C. board, hold the edge of the board with care NOT to apply stress on the
components.
3) When connecting or disconnecting the connectors, hold the housing of the connector. DO NOT pull the lead wires.
3 Troubleshooting procedure
1) First, check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate an abnormality.
To make sure, check how many times the abnormality indication is flashing on and off before starting service work.
2) If the electronic control P.C. board is supposed to be defective, check the copper foil pattern for disconnection and the
components for bursting and discoloration.
3) When troubleshooting, refer to the flow chart and the check table on page 23.
4 How to replace batteries
Weak batteries may cause the remote controller malfunction.
In this case, the remote controller can not be repaired only by the battery replacement. To operate the remote controller
normally, replace the batteries in the following order.
This remote controller has the RESET button. After refilling new batteries, press the RESET button with tip end of ball
point pen or the like, and then use the remote controller.
22
11-2. Instruction of troubleshooting
OPERATION
INDICATOR
lamp
Start
Indoor unit operates.
Outdoor unit doesn’t
operate.
Outdoor unit
operates in
only Test
Run
operation.
Check
room
temperatur
e
thermistor.
Outdoor unit
doesn’t
operate
even in Test
Run
operation.
Refer to
“Check of
outdoor
unit” on
page 26.
Indoor unit
doesn’t receive
the signal from
remote
controller.
Refer to
B
“Check of
receiver P.C.
board” on page
25.
When the remote
controller is pressed
or when the
EMERGENCY
OPERATION switch
is pressed, the fan
doesn’t rotate, with
OPERATION
INDICATOR lamp
Refer to “Check
A
of indoor fan
motor” on page
OPERATION
INDICATOR lamp on
the indoor unit is
flashing on and off.
2-time flash
2.5-second OFF
Indoor unit doesn’t
receive the signal from
remote controller.
Also, OPERATION
INDICATOR lamp
doesn’t flash, when the
EMERGENCY
OPERATION switch is
pressed.
Refer to “Check of
C
indoor electronic control
P.C. board” on page 26.
25.
D
Cause:Indoor unit
2-time-Room temperature/Indoor coil thermistor
trouble
Check indoor coil
thermistor. Refer to
“Test point diagram
and voltage” on page
27.
Check room
temperature thermistor.
Refer to “Test point
diagram and voltage”
on page 27.
1. troubleshooting check table
❈ Before taking measures, make sure that the symptom reappears, for accurate troubleshooting.
Self check table
Abnormal
NO.
point
Indoor coil
thermistor
1
Room
temperatur
e
thermistor
2-time flash
2.5-second OFF
Indication
Symptom
Outdoor unit
does not run.
Detect method
Detect Indoor coil/room
temperature thermistor short
or open circuit every 8
seconds during operation.
23
● Check resistance of thermistor.
● Reconnect connector.
● Check indoor electronic control P.C.
board.
Check point
C
S
R
BLK
RED
WHT
P
BLKRED ORNYLWBLU BRN
WHT
GRN
YLW
P
BLK
RED
WHT
MAIN
AUX
P
BRN
YLW
PNK
RED
ORN
BLU
ROTOR
MCF-13NV -
E3
2. Trouble criterion of main parts
Part name
Room
temperature
thermistor
Measure the resistance with a tester.
(Part temperature 10°C ~ 30°C)
Indoor coil
thermistor
Measure the resistance between the terminals with a tester.
(Coil wiring temperature -10°C ~ 40°C)
Check method and criterion
Normal
8kΩ ~ 20kΩ
Figure
Abnormal
Opened or short-circuited
Compressor
Indoor fan
motor
Abnormal
Opened or
short-circuited
C-R
C-S
Normal
1.86~2.28Ω
3.5~4.29Ω
Measure the resistance between the terminals with a tester.
(Coil wiring temperature10°C ~ 30°C)
WHT-BLK
Normal
195~212Ω
Abnormal
BLK-YLW44.1~47.8Ω
YLW-BLU31.4~34.1Ω
Opened or
short-circuited
BLU-BRN42.6~46.1Ω
BRN-RED22.3~24.2Ω
Measure the resistance between the terminals with a tester.
(Coil wiring temperature -10°C ~ 40°C)
Outdoor fan
motor
Vane
motor
WHT-BLK
BLK-RED
Normal
155 ~ 191Ω
363 ~ 445Ω
Abnormal
Opened or
short-circuited
Measure the resistance between the terminals with a tester.
(Part temperature10°C ~ 30°C)
NormalAbnormal
Resistant per phase
329
~357
Ω
Opened or
short-circuited
24
: INNER THERMOSTAT
P
A
● Re-install the unit away from lights.
● Attach a filter on receiving part.
Switch on the remote controller.
Is LCD display on the remote
controller visible?
Replace the batteries.(see page 22.)
Remove the batteries and then set them back.
Check if the unit operates with the remote controller.
Does the unit operate with remote controller?
Turn on a radio to AM and press
switch on remote controller.
Is noise heard from radio?
Replace the remote controller.
Are there any fluorescent lights
of inverter or rapid-start type
within the range of 1m?
Turn ON the power supply.
Measure the voltage between receiver P.C. board connector No.2(+) and No.1 when the remote controller button is pressed.
Is the voltage approx. 4V DC?
No
(5V DC or 0V DC)
Replace the receiver P.C. board.
No
(not clear)
Yes
Yes
No
OK
No
Yes
Yes
Yes
No
Replace the indoor electronic control P.C. board.
Replace the auto restart P.C. board.
Yes
Disconnect AUTO RESTART P.C. board from CN104
and short CN104 1 to 5.
Does the unit receive the signal
from the remote controller?
No
Check of indoor fan motor
Indoor fan does not operate.
No
Reconnect the lead wires.
Check of remote controller and receiver P.C. board
B
Are lead wires connected?
Disconnect lead wires from connector (Fan motor) on indoor electronic control P.C. board.
Measure resistance between lead wires No.1 and No.4 and then No.3 and No.4 of the fan motor.
Turn OFF the power supply.
Check connector (Fan motor) visually.
Yes
Is resistance 0 (short circuit) or ∞ (open circuit)?
Yes ( 0 or ∞ )
Repair the indoor fan motor.
Is soldered point normal?
Yes
Replace the indoor electronic control
P.C. board.
No
(others)
No
Resolder it.
Indoor unit operates by pressing the EMERGENCY OPERATION switch, but does not operate with the remote
controller.
WCheck if the remote controller is exclusive for this air conditioner.
25
Check of indoor electronic control P.C. board
C
The unit doesn’t operate with the remote controller.
Also, the OPERATION INDICATOR lamp doesn’t light up by pressing the EMERGENCY OPERATION switch.
Replace the fuse.
Is fuse(F11)blown?
Check both “parts side”and “pattern
side” of indoor electronic control P.C.
board visually.
Check of outdoor unit
D
Be sure to check both fuse
and varistor in any case.
Is varistor(NR11)burnt?
Replace the varistor.
Compressor and / or outdoor fan does not operate.
Yes
No
Replace the indoor electronic
control P.C. board.
No
Yes
Start
Yes
Check the outdoor unit fan
motor and the compressor.
Yes
Check the continuity of indoor
and outdoor unit connection.
Press the EMERGENCY
OPERATION switch. 3-minute time
delay works. Test run operation
operates for 30 minutes.
Check voltage to terminal
block of outdoor unit. Is there
220-240V AC to terminal
block between 2 - N ?
No
Check voltage to the
terminal block of indoor unit.
Is there 220-240V AC to
terminal block between 2 -
No
Replace the indoor
electronic control P.C.
board.
26
TEST POINT DIAGRAM AND VOLTAGE
MCF-13NV -
Indoor electronic control P.C. board
75643218
E3
Fan motor power supply
LoHi
Fan motor voltage
220-240V AC
Fuse 250V AC 3.15A
Power supply
input 220-240V AC
EMERGENCY OPERATION switch
GILMS
RT11
TH113
DE00R697B
Room temperature
thermistor(RT11)
12
CH313
Indoor coil thermistor (RT12)
Room temperature thermistor (RT11)
To the indoor
electronic control
P.C.board CN113
+
12V DC
–
}
+
5V DC
–
}
CN104
JHA(Release of AUTO RESTART
FUNCTION.Refer to page 21.)
Time short point
Indoor coil thermistor (RT12)
40
30
20
Resistance (K')
10
0
0
10 20 30 40 50 60
Temperature ( C)
27
12
DISASSEMBLY INSTRUCTIONS
<"Terminal with lock mechanism" Detaching points>
In case of terminal with lock mechanism, detach the terminal as shown below.
There are two types ( Refer to (1) and (2)) of the terminal with lock mechanism.
The terminal with no lock mechanism can be removed by pulling it out.
Check the shape of the terminal and work.
(1) Slide the sleeve and check if there is a locking lever or not.
Sleeve
1Slide the sleeve.
2Pull the terminal while
Locking lever
12-1. MCF-13NV-
E3
pushing the locking
lever.
INDOOR UNIT
OPERATING PROCEDUREPHOTOS
1. Removing the electronic control P. C . board.
(1) Pull out the upper part of the grill. ( photo 1. )
(2) Remove the screws of the grill.
(3) Remove screws of terminal block cover.
Remove the terminal block cover and remove the terminal
block.
(4) Remove the screws of the electronic box cover.
(5) Pull out the electronic control P.C. board.
Photo 3
(2) The terminal with this connector is a terminal
with lock mechanism
1Hold the sleeve, and
pull out the terminal
slowly.
Connector
Photo 1
2. Removing the indoor fan motor
(1) Remove the grill. ( Refer to 1. (1) (2) )
(2) Remove the screws of the pipe support assembly.
(3) Remove the fan casings.(upper)
(4) Disconnect the connector of the indoor fan motor.
(5) Disconnect the ground wire of the fan motor.
(6) Remove the screws of the motor band and remove the
catch.
(7) Take out the sirocco fan and the indoor fan motor.
Photo 2
Photo 4
Fan casing
(upper)
Screws of the grill
Electronic box
Terminal box
Motor band
28
Indoor fan motor
Screws of
the motor band
Fan
casing(upper)
OPERATING PROCEDUREPHOTOS
3. Removing the indoor heat exchanger.
(1) Remove the grill. (Refer to 1. (1) (2))
(2) Remove the screws on both side and in front of the front
panel. (Photo 5)
(3) Remove the screws of the nozzle assembly. (Photo 6)
(4) Remove the electronic box. (Refer to 1)
(5) Remove the indoor fan motor. (Refer to 2)
(6) Remove the screws of the motor support.
(7) Remove the fan casing. (Iower)
(8) Remove the installations of the drain pan and remove the
screws. (Photo 7)
(9) Remove the screws under the drain pan. (Photo 8)
)
(
Remove the drain pan.
10
(11)
Remove the indoor heat exchanger.
Photo 5
Screws of
the front
panel
Photo 6
Screws of
the nozzle
assembly
Photo 7
Photo 8
Installations and screws
29
screws under
the drain pan
12-2. MUCF-13NV-
OUTDOOR UNIT
OPERATING PROCEDUREPHOTOS
E3
1. Removing the cabinet
(1) Remove the screws of the top panel.
(2) Remove the screws of the service panel.
(3) Remove the screws of the cabinet.
(4) Remove the screws of the front panel and motor support.
(5) Remove the service panel, and remove the screw from
the insides.
(6) Remove the top panel.
(7) Remove the cabinet.
Photo 3
Screws of the
service panel
Screws of the
top panel
Service
panel
Photo 1
Screws
of the
cabinet
Photo 2
Screws of the front panel
and motor support
Screws of the cabinet
Screws of
the top panel
2. Removing the electrical parts
(1) Remove the service panel and the cabinet.(Refer to 1)
(2) Remove the following parts.
•Compressor capacitor (C1)
•Outdoor fan capacitor (C2)
•Terminal block
Screws of
the cabinet
Photo 4
Outdoor fan capacitor
30
Compressor capacitor
Terminal block
OPERATING PROCEDUREPHOTOS
3. Removing the propeller fan and the outdoor fan
motor
(1) Remove the cabinet. (Refer to 1.)
(2) Remove the propeller fan nut.
(3) Remove the propeller fan.
NOTE : Loose the propeller fan in the rotating direction for
removal.
When attaching the propeller fan, align the mark on the
propeller fan and the motor shaft cut section.
Set the propeller fan in position by using the cut on the
shaft and the mark on the propeller fan.
(4) Remove lead clamps and fan motor lead wires.
(5) Remove screws fixing the fan motor.
(6) Remove the outdoor fan motor.
Photo 5
Set screws of
outdoor fan motor
Propeller fan
Hook
Lead clamps
4. Removing the compressor
(1) Remove the cabinet. (Refer to 1)
(2) Remove the relay panel.
(3) Remove the soundproof felt.
(4) Remove the terminal cover on the compressor.
(5) Disconnect lead wires from the glass terminal of the
compressor.
(6) Release gas from the refrigerant circuit.
(7) Disconnect the welded part of the discharge pipe.
(8) Disconnect the welded part of the suction pipe.
(9) Remove nuts fixing the compressor.
)
(
Remove the compressor.
10
NOTE
● Before using a burner, purge gas from the pipes until the
pressure gauge shows 0 kg/cm
● Use the burner under the condition that gas can be released
even when the inner pressure rises by heat.
FRONT PANEL(WH)
GRILLE(WH)
VANE(WH)
AIR FILTER
BACK PANEL(IN)
NOZZLE(WH)
FAN CASING(U)
FAN CASING(L)
INDOOR HEAT EXCHANGER
DRAIN PAN
UNION(GAS)
UNION(LIQUID)
INSTALLATION METAL(L)
INSTALLATION METAL(R)
GRILLE CATCH(WH)
VANE MOTOR
{12.7
{6.35
3PCS/SET
1
1
1
2
1
1
2
2
1
1
1
1
1
1
3
1
Symbol
in Wiring
Diagram
MCF-
13NV- E3 (WH)
VM
1718E02 227 426
E02 141 083
REMOTE CONTROLLER
REMOTE CONTROLLER HOLDER
1
1
MCF-13NV -(WH)
E3
13-1. INDOOR UNIT
STRUCTURAL PARTS
16
13
1
4
2
13-2. ACCESSORY P ART AND
REMOTE CONTROLLER
3
95
6
UNION(LIQUID)
12
14
1817
10
UNION(GAS)
13-1. INDOOR UNIT STRUCTURAL PARTS
Part number that is circled is not shown in the illustration.
CABINET
GRILLE(OUT)
SERVICE PANEL
OUTDOOR HEAT EXCHANGER
MOTOR SUPPORT
COMPRESSOR
BASE
OUTDOOR FAN MOTOR
PROPELLER FAN
COMPRESSOR CAPACITOR
OUTDOOR FAN CAPACITOR
TERMINAL BLOCK(OUT)
CAPILLARY TUBE
COMPRESSOR RUBBER SET
STOP VALVE(LIQUID)
STOP VALVE(GAS)
BACK PANEL(OUT)
TOP PANEL
FUSE
RH-231VHAT
RA6V33-
30+/440VAC
1.5+/440VAC
{3.0X{1.6X300
3RUBBERS/SET
{6.35
{12.7
250V2A
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
1
1
1
1
MC
MF
C1
C2
TB
F
Symbol
in Wiring
Diagram
MUCF-
13NV- E3
13-4. OUTDOOR UNIT
STRUCTURAL PARTS,
ELECTRICAL PARTS AND
FUNCTIONAL PARTS
MUCF-13NV-
5
4
1
2
E3
9
812
1118
10
3
Part number that are circled are not shown in the illustration.
6
14
34
7
16
15
17
OPTIONAL PARTS14
Remove the air
filter and the
deodorizing
filter together.
Separate the deodorizing
filter (gray sponge type)
from the air filter.
Remove the air
filter and the
air cleaning filter
together.
Separate the air
cleaning filter
(white bellow type)
from the air filter.
Model
Part No.
MAC-1200FT
MCF-13NV-
E3
MAC-1700DF
Model
Part No.
MCF-13NV-
E3
14-1. AIR CLEANING FILTER
● If the air cleaning filter is clogged, it may reduce the air conditioner capacity or cause condensation at the air outlet.
● The air cleaning filter is disposable. The standard usable term is about 4 months. However, if the color of the filter
turns to dark brown, replace soon.
14-2. DEODORIZING FILTER
● Clean the filter every two weeks. When it becomes too dirt, clean it more often.
● Replace the filter with a new one when its color can not be restored even after washing or when the filter becomes
dark.
● Standard interval for the filter replacement is about 1 year.
35
HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO100-8310 TELEX J24532 CABLE MELCO TOKYO
CC
Copyright 1999 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Issued in Jun. 1999. No.OB239 268
Printed in Japan
New publication, effective Jun. 1999.
Specifications subject to change without notice.
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