Mitsubishi Electric Mr. Slim SEZ-KD25VA User manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
TECHNICAL & SERVICE MANUAL
Model name
<Indoor unit>
Model name
<Indoor unit>
SEZ-KD25VA(L)
SEZ-KD35VA(L)
SEZ-KD50VA(L)
SEZ-KD60VA(L)
SEZ-KD71VA(L)
Series SEZ
2012
INDOOR UNIT
WIRED REMOTE
CONTROLLER
ON/OFF
TEMP.
WIRELESS REMOTE
CONTROLLER
ON/OFF
TEMP

HWE0711C.qx 12.10.10 14:09 Page 1

1. PART NAMES AND FUNCTIONS ···········································································2
2. SPECIFICATIONS ···································································································5
3. OUTLINES AND DIMENSIONS·············································································18
4. WIRING DIAGRAM ································································································20
5. REFRIGERANT SYSTEM DIAGRAM····································································21
6. TROUBLESHOOTING ···························································································22
7. DISASSEMBLY PROCEDURE··············································································34
CONTENTS

2
1PART NAMES AND FUNCTIONS
Indoor Unit
SEZ-KD25VA(L)
SEZ-KD35VA(L)
SEZ-KD50VA(L)
SEZ-KD60VA(L)
SEZ-KD71VA(L)
Air outlet duct flange
Air outlet
Air inlet
● Operation buttons
Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button.
Wired remote controller
PAR-21MAA
ON/OFF
FILTER
CHECK
OPERATION
CLEAR
TEST
TEMP.
MENU
BACK DAY
MONITOR/SET
CLOCK
ON/OFF
Set Temperature buttons
Down
Up
Timer Menu button
(Monitor/Set button)
Mode button (Return button)
Set Time buttons
Back
Ahead
Timer On/Off button
(Set Day button)
Opening the
door
Start/Stop button
Fan Speed button
Filter button
(<return sign> button)
Test Run button
Service button (Clear button)
Airflow Up/Down button
Louver button
(Operation button)
To preceding operation
number
Ventilation button
(Operation button)
To next operation number
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3
●Display
For purposes of this explanation,
all parts of the display are shown
as lit. During actual operation, only
the relevant items will be lit.
˚F˚C
˚F˚C
ERROR CODE
AFTER
TIMER
TIME SUN MON TUE WED THU FRI SAT
ON
OFF
Hr
AFTER
FILTER
FUNCTION
ONLY1Hr.
WEEKLY
SIMPLE
AUTO OFF
Identifies the current operation
Shows the operating mode, etc.
*Multilanguage display is sup-
ported.
“Centrally Controlled” indicator
Indicates that operation of the re-
mote controller has been prohib-
ited by a master controller.
“Timer Is Off” indicator
Indicates that the timer is off.
Temperature Setting
Shows the target temperature.
Day-of-Week
Shows the current day of the week.
Time/Timer Display
Shows the current time, unless the simple or Auto Off
timer is set.
If the simple or Auto Off timer is set, shows the time
remaining.
“Sensor” indication
Displayed when the remote controller
sensor is used.
“Locked” indicator
Indicates that remote controller but-
tons have been locked.
“Clean The Filter” indicator
Comes on when it is time to clean the
filter.
Timer indicators
The indicator comes on if the corre-
sponding timer is set.
Up/Down Air Direction indica-
tor
The indicator shows the direc-
tion of the outcoming airflow.
“One Hour Only” indicator
Displayed if the airflow is set to
Low and downward during COOL
or DRY mode. (Operation varies
according to model.)
The indicator goes off after one
hour, at which time the airflow di-
rection also changes.
Room Temperature display
Shows the room temperature.
Louver display
Indicates the action of the swing
louver. Does not appear if the
louver is stationary.
(Power On indicator)
Indicates that the power is on.
Fan Speed indicator
Shows the selected fan speed.
Ventilation indicator
Appears when the unit is running in
Ventilation mode.
Caution
●Only the Power on indicator lights when the unit is stopped and power supplied to the unit.
●If you press a button for a feature that is not installed in the indoor unit, the remote controller will display the “Not Available”
message.
If you are using the remote controller to operate multiple indoor units, this message will appear only if the feature is not
present at the parent unit.
●When power is turned ON for the first time, it is normal that “PLEASE WAIT” is displayed on the room temperature indication
(For max. 2minutes). Please wait until this “PLEASE WAIT” indication disappears then start the operation.
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4
Wireless remote controller
●When using the wireless remote controller, point it towards the receiver on
the indoor unit.
●If the remote controller is operated within approximately two minutes after
power is supplied to the indoor unit, the indoor unit may beep twice as the
unit is performing the initial automatic check.
●The indoor unit beeps to confirm that the signal transmitted from the
remote controller has been received. Signals can be received up to
approximately 7 meters in a direct line from the indoor unit in an area 45°
to the left and right of the unit. However, illumination such as fluorescent
lights and strong light can affect the ability of the indoor unit to receive sig-
nals.
●If the operation lamp near the receiver on the indoor unit is flashing, the
unit needs to be inspected. Consult your dealer for service.
●Handle the remote controller carefully. Do not drop the remote controller or
subject it to strong shocks. In addition, do not get the remote controller
wet or leave it in a location with high humidity.
●To avoid misplacing the remote controller, install the holder included with
the remote controller on a wall and be sure to always place the remote
controller in the holder after use.
CLOCK
CHECK
RESET SET
TEST RUN
MODE
FAN
VANE
LOUVER
min
h
AUTO START
AUTO STOP
ON/OFF
TEMP
NOT AVAILABLE
MODEL SELECT
TEST RUN CHECK
SET TEMPERATURE button
SET TEMPERATURE button sets and
any desired room temperature.
AUTO STOP/AUTO START button
Used for selecting timed starting or st-
opping.
VANE CONTROL button
Used to change the airflow direction.
LOUVER button
Used for adjusting the airflow direction.
min button
Used for setting the current time.
h button
Used for setting the current time.
FAN SPEED button
This button is used to set fan speed to
low, medium or high.
MODE SELECT button
This button is used to change between
auto, cooling, heating and drying oper-
ation modes.
TEST RUN button
CHECK button
ON/OFF button
Pushing button starts operation.
Pushing again stops operation.
Battery installation/replacement
1. Remove the top cover, insert two AAA
batteries, and then install the top cover.
Top cover
2. Press the Reset button.
1
2
3
Press the Reset button
with an object that has
a narrow end.
Two AAA batteries
Insert the negative (–)
end of each battery
first. Install the batter-
ies in the correct direc-
tions (+, –).
● Operation buttons
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5
2SPECIFICATIONS
kW
A
˚C(˚F)
Fan
Pa
kW
m3/min
mm
In.
kg
mm(in.)
A
Liquid mm(in.)
Gas mm(in.)
mm(in.)
dB<A>
Net weight
R410A
Motor output
Airflow rate(Low-Mid-High)
Motor type
External finish
Wiring
Model Name
Power source
Optional parts
Remark
Document
Standard
attachment
Power input
Current
Type x Quantity
Airflow direction
Temperature set range Remote controller
Operation Mode
Varistor
External static press
Driving mechanism
External dimension
Drain piping diameter
H x W x D
<Cooling> Indoor: 27˚CD.B./19˚CW.B. (81˚FD.B. / 66˚FW.B. Outdoor:35˚CD.B. (95˚FD.B. )
Insulation material
Air filter
Refrigerant control device
Protection devices
Note
Pipe length: 7.5m (24-9/16ft) Height difference: 0m (0ft)
2.The external static pressure is set to 15 Pa at factory shipment.
<Heating> Indoor:20˚CD.B. (68˚FD.B.) Outdoor:7˚CD.B. / 6˚CW.B. (45˚FD.B. / 43˚FW.B.)
1.Cooling/Heating capacity indicates the maximum value at operation under the following condition.
3.Wired Remote Controller for VA model , Wireless Remote Controller for VAL model
Refrigerant
piping diameter R410A
Noise level (Low-Mid-High)
(measured in anechoic room)
Heat exchanger
Terminal block
Power outlet A
Accessory *3
Min.size of wire
Amperage of wire breaker
19 to 30 (67 to 86) 17 to 28 (63 to 83)
220 - 240V (50/60Hz)
0.04
0.39
-
Sirocco fan x 2
5-15-35-50
DC blushless motor
0.096
Direct-driven
5.5-7.0-9.0
Galvanized
200 x 700 x 700
7-7/8 x 27-9/16 x 27-9/16
18
1.6 (1/8)
15
ø6.35 (ø1/4) Flare
ø9.52 (ø3/8) Flare
O.D. 32 (1-9/32)
23-26-30
Polystyrene foam, Polyethylene foam, Urethane foam
PP Honeycomb fabric (washable)
-
Fuse (250V 6.3A)
Cross fin (Aluminum fin and copper tube)
ERZV10D471
To outdoor unit : 3P To wired remote controller : 2P
10
Installation Manual, Instruction Book
Drain hose (flexible joint), Remote Controller
Drain Iift-up mechanism (PAC-KE07DM-E)
SEZ-KD25VA(L)
19 to 30 (67 to 86) 17 to 28 (63 to 83)
Cooling Heating Cooling Heating
220 - 240V (50/60Hz)
0.05
0.46
-
Sirocco fan x 2
5-15-35-50
DC blushless motor
0.096
Direct-driven
7.0-9.0-11.0
Galvanized
200 x 900 x 700
7-7/8 x 35-7/16 x 27-9/16
21
1.6 (1/8)
15
ø6.35 (ø1/4) Flare
ø9.52 (ø3/8) Flare
O.D. 32 (1-9/32)
23-28-33
Polystyrene foam, Polyethylene foam, Urethane foam
PP Honeycomb fabric (washable)
-
Fuse (250V 6.3A)
Cross fin (Aluminum fin and copper tube)
ERZV10D471
To outdoor unit : 3P To wired remote controller : 2P
10
Installation Manual, Instruction Book
Drain hose (flexible joint), Remote Controller
Drain Iift-up mechanism (PAC-KE07DM-E)
SEZ-KD35VA(L)
HWE0711C.qx 12.10.10 14:09 Page 5

6
kW
A
˚C(˚F)
Fan
Pa
kW
m3/min
mm
In.
kg
mm(in.)
A
Liquid mm(in.)
Gas mm(in.)
mm(in.)
dB<A>
Net weight
R410A
Motor output
Airflow rate(Low-Mid-High)
Motor type
External finish
Wiring
Model Name
Power source
Optional parts
Remark
Document
Standard
attachment
Power input
Current
Type x Quantity
Airflow direction
Temperature set range Remote controller
Operation Mode
Varistor
External static press
Driving mechanism
External dimension
Drain piping diameter
H x W x D
<Cooling> Indoor: 27˚CD.B./19˚CW.B. (81˚FD.B. / 66˚FW.B. Outdoor:35˚CD.B. (95˚FD.B. )
Insulation material
Air filter
Refrigerant control device
Protection devices
Note
Pipe length: 7.5m (24-9/16ft) Height difference: 0m (0ft)
2.The external static pressure is set to 15 Pa at factory shipment.
<Heating> Indoor:20˚CD.B. (68˚FD.B.) Outdoor:7˚CD.B. / 6˚CW.B. (45˚FD.B. / 43˚FW.B.)
1.Cooling/Heating capacity indicates the maximum value at operation under the following condition.
3.Wired Remote Controller for VA model , Wireless Remote Controller for VAL model
Refrigerant
piping diameter R410A
Noise level (Low-Mid-High)
(measured in anechoic room)
Heat exchanger
Terminal block
Power outlet A
Accessory *3
Min.size of wire
Amperage of wire breaker
19 to 30 (67 to 86) 17 to 28 (63 to 83)
220 - 240V (50/60Hz)
0.07
0.63
-
Sirocco fan x 3
5-15-35-50
DC blushless motor
0.096
Direct-driven
10.0-12.5-15.0
Galvanized
200 x 900 x 700
7-7/8 x 35-7/16 x 27-9/16
23
1.6 (1/8)
15
ø6.35 (ø1/4) Flare
ø12.7 (ø1/2) Flare
O.D. 32 (1-9/32)
30-34-37
Polystyrene foam, Polyethylene foam, Urethane foam
PP Honeycomb fabric (washable)
-
Fuse (250V 6.3A)
Cross fin (Aluminum fin and copper tube)
ERZV10D471
To outdoor unit : 3P To wired remote controller : 2P
20
Installation Manual, Instruction Book
Drain hose (flexible joint), Remote Controller
Drain Iift-up mechanism (PAC-KE07DM-E)
SEZ-KD50VA(L)
19 to 30 (67 to 86) 17 to 28 (63 to 83)
Cooling Heating Cooling Heating
220 - 240V (50/60Hz)
0.07
0.63
-
Sirocco fan x 4
5-15-35-50
DC blushless motor
0.096
Direct-driven
12.0-15.0-18.0
Galvanized
200 x 1100 x 700
7-7/8 x 43-5/16 x 27-9/16
27
1.6 (1/8)
15
ø6.35 (ø1/4) Flare
ø15.88 (ø5/8) Flare
O.D. 32 (1-9/32)
30-34-38
Polystyrene foam, Polyethylene foam, Urethane foam
PP Honeycomb fabric (washable)
-
Fuse (250V 6.3A)
Cross fin (Aluminum fin and copper tube)
ERZV10D471
To outdoor unit : 3P To wired remote controller : 2P
20
Installation Manual, Instruction Book
Drain hose (flexible joint), Remote Controller
Drain Iift-up mechanism (PAC-KE07DM-E)
SEZ-KD60VA(L)
HWE0711C.qx 12.10.10 14:09 Page 6

7
kW
A
˚C(˚F)
Fan
Pa
kW
m3/min
mm
In.
kg
mm(in.)
A
Liquid mm(in.)
Gas mm(in.)
mm(in.)
dB<A>
Net weight
R410A
Motor output
Airflow rate(Low-Mid-High)
Motor type
External finish
Wiring
Model Name
Power source
Optional parts
Remark
Document
Standard
attachment
Power input
Current
Type x Quantity
Airflow direction
Temperature set range Remote controller
Operation Mode
Varistor
External static press
Driving mechanism
External dimension
Drain piping diameter
H x W x D
<Cooling> Indoor: 27˚CD.B./19˚CW.B. (81˚FD.B. / 66˚FW.B. Outdoor:35˚CD.B. (95˚FD.B. )
Insulation material
Air filter
Refrigerant control device
Protection devices
Note
Pipe length: 7.5m (24-9/16ft) Height difference: 0m (0ft)
2.The external static pressure is set to 15 Pa at factory shipment.
<Heating> Indoor:20˚CD.B. (68˚FD.B.) Outdoor:7˚CD.B. / 6˚CW.B. (45˚FD.B. / 43˚FW.B.)
1.Cooling/Heating capacity indicates the maximum value at operation under the following condition.
3.Wired Remote Controller for VA model , Wireless Remote Controller for VAL model
Refrigerant
piping diameter R410A
Noise level (Low-Mid-High)
(measured in anechoic room)
Heat exchanger
Terminal block
Power outlet A
Accessory *3
Min.size of wire
Amperage of wire breaker
19 to 30 (67 to 86) 17 to 28 (63 to 83)
Cooling Heating
220 - 240V (50/60Hz)
0.10
0.84
-
Sirocco fan x 4
5-15-35-50
DC blushless motor
0.096
Direct-driven
12.0-16.0-20.0
Galvanized
200 x 1100 x 700
7-7/8 x 43-5/16 x 27-9/16
27
1.6 (1/8)
15
ø9.52 (ø3/8) Flare
ø15.88 (ø5/8) Flare
O.D. 32 (1-9/32)
30-35-40
Polystyrene foam, Polyethylene foam, Urethane foam
PP Honeycomb fabric (washable)
-
Fuse (250V 6.3A)
Cross fin (Aluminum fin and copper tube)
ERZV10D471
To outdoor unit : 3P To wired remote controller : 2P
20
Installation Manual, Instruction Book
Drain hose (flexible joint), Remote Controller
Drain Iift-up mechanism (PAC-KE07DM-E)
SEZ-KD71VA(L)
HWE0711C.qx 12.10.10 14:09 Page 7

8
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD25VA(L)
External static pressure: 15Pa High
Middle
30
SPL(dB)
26
Low 23
LINE
<50/60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD25VA(L)
External static pressure: 5Pa High
Middle
29
SPL(dB)
25
Low 22
LINE
<50/60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD25VA(L)
External static pressure: 50Pa High
Middle
33
SPL(dB)
29
Low 25
LINE
<50/60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD25VA(L)
External static pressure: 35Pa High
Middle
31
SPL(dB)
28
Low 24
LINE
<50/60Hz>
NOTCH
NOISE CRITERION CURVES
NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound
may be bigger than displayed level under actual installation condition by surrounding echoes. The sound level
can be higher by about 2 dB than the displayed level during cooling and heating operation.
HWE0711C.qx 12.10.10 14:09 Page 8