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Mitsubishi
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SE-1.6AR.TH (-T)

Mitsubishi SE-1.6AR.TH (-T), SE-2AR.TH (-T), SE-2.5AR.TH (-T), SU-1.6VR.TH (-T), SU-2NR.TH Service Manual

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TECHNICAL & SERVICE MANUAL
SPLIT-TYPE, AIR CONDITIONERS
CONTENTS
1. PART NAMES AND FUNCTIONS ········2
2. SPECIFICATIONS·································4
3. OUTLINES AND DIMENSIONS············7
4. WIRING DIAGRAM·······························9
REFRIGERANT SYSTEM DIAGRAM
······12
6. DATA···················································16
7. MICROPROCESSOR CONTROL·······21
8. TROUBLESHOOTING························25
9. DISASSEMBLY PROCEDURE···········31
10. PARTS LIST········································36
11. OPTIONAL PARTS ·····························40
<Indoor unit>
SE-1.6AR.TH SE-2AR.TH SE-2.5AR.TH
SE-1.6AR.TH-T SE-2AR.TH-T SE-2.5AR.TH-T
No. OC167
[Models]
INDOOR UNIT
The Slim Line. From Mitsubishi Electric.
REMOTE CONTROLLER
SU-1.6NR.TH SU-2NR.TH SU-2.5NR.TH SU-1.6VR.TH SU-2VR.TH SU-2.5VR.TH SU-1.6VR.TH-T SU-2VR.TH-T SU-2.5VR.TH-T
<Outdoor unit>
MITSUBISHI ELECTRIC
12 11 10
9 8 7 6 5 4 3 2 1
29 28 27 26 25 24 23 22 21 20 19 18
TIMER TEMP
TIMER/TEMP.
UP
DOWN
POWER
COOL
ON/OFF
MODE
SELECT
FAN
SPEED
TIMER MODE
DRY FAN
HIGH
LOW
AUTO STOP
START
OUTDOOR UNIT
Series SE
Ceiling Concealed
REVISED EDITION-A
Revision
• SE-1.6AR.TH-T, SE-2AR.TH-T, SE-2.5AR.TH-T, SU-1.6VR.TH, SU-1.6VR.TH-T, SU-2VR.TH, SU-2VR.TH-T, SU-2.5VR.TH and SU-2.5VR.TH-T are added.
•Please destroy OC167, if you have.
2
1
PART NAMES AND FUNCTIONS
● Indoor Unit
SE-1.6AR.TH SE-1.6AR.TH-T SE-2AR.TH SE-2AR.TH-T SE-2.5AR.TH SE-2.5AR.TH-T
Air outlet duct flange
Air outlet
Air intake (Selecting the either back side or bottom side.)
SU-1.6NR.TH SU-1.6VR.TH SU-1.6VR.TH-T SU-2NR.TH SU-2VR.TH SU-2VR.TH-T SU-2.5NR.TH SU-2.5VR.TH SU-2.5VR.TH-T
Air intake
Air outlet
Drain outlet
Piping
Drain hose
● Outdoor Unit
3
● Remote controller SE-1.6AR.TH SE-1.6AR.TH-T
SE-2AR.TH SE-2AR.TH-T SE-2.5AR.TH SE-2.5AR.TH-T
MITSUBISHI ELECTRIC
12 11 10
9 8 7 6 5 4 3 2 1
29 28 27 26 25 24 23 22 21 20 19 18
TIMER TEMP
TIMER/TEMP.
UP
DOWN
POWER
COOL
ON/OFF
MODE
SELECT
FAN
SPEED
TIMER MODE
DRY FAN
HIGH
LOW
AUTO STOP
START
TIMER / TEMP.
This button is used to change between display of room temperature and display of remaining timer during "AUTO STOP" operation. Green lamps light in selected display
Remaining timer time display
Lamps display remaining timer time or room temperature.
Lamps indicate time remaining until timer stops timed operation. Green lamps corresponding to remaining number of hours light.
Room Temperature display
Lamps display temperature settings and actual room temperatures.
● Temperature settings; Green lamps light.
● Temperature in room; Green lamps flash.
(Example display readings are for explanations only ; autual display readings will differ.)
This button is used to change between low and high fan speeds. One of two green lamps lights to indicate fan speed in effect.
MODE SELECT button
This button is used to change between cooling, ventilation and DRY operation modes. One of three green lamps lights to indicate mode in effect.
ON / OFF button
Pushing button starts operation. Pushing again stops operation. Green lamp remains lit during
UP and DOWN buttons
● Temperature control (While "TEMP" green lamps is lit.) Use UP and DOWN buttons to set disired temperature between 18 and 29°C.
● Timed operation (While green "TIMER" lamp is lit.) Use UP and DOWN buttons to set timed operation between one and twelve hours.
TIMER MODE button
Used for selecting timed starting or stopping. Green lamps lights to indicate timer mode selected.
● Pushing UP and Down buttons together for more than two seconds will initiate "trial run" or "inspection" mode. Avoid pushing these buttons simultaneously during normal operation. Push ON / OFF button to cancel trial run or inspection mode if initiated by accident.
● All green lamps turn off when air conditioner is stopped.
● Avoid operation of buttons with fingernails or other sharp objects. Sharp objects may scratch operating panel.
Attention :
Settings remain in effect until changed. Air conditioner can be operated by simply pushing ON /OFF button once settings have been made.
FAN SPEED button
Display Panel Operating Panel
4
SPECIFICATIONS
2
Function
Power supply
Model
Capacity Dehumidification Air flow Running current Power input Power factor Starting current Compressor motor current Fan motor current
W
R/h
K/h
A W %
A
A
A
W
"
"
"
mm mm mm mm mm mm
kg kg
dB
dB rpm rpm
kg
R
k"
k"
k"
Capacity
Outdoor unit
Indoor unit
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:) RT61(at 0:)
Sound level (Hi) Fan speed (Hi) Fan speed regulator
Outdoor unit
Outdoor unit
Refrigerant filling capacity(R-22)
Thermistor
Weight
Special remarks
Model Output Winding resistance (at 20:) Model
Winding resistance (at 20:)
Model
Winding resistance (at 20:)
SU -1.6NR.TH
Single phase, 220V, 60Hz Single phase, 220-240V, 50Hz
Cooling
780
PK6V19-ED
WHT-BLK :251.4 BLK-BLU : 19.9
BLU-YLW :26.5 YLW-RED :63.2
RA6V40-EE
WHT-BLK :130.4
BLK-RED :134.6
SU -1.6VR.TH SU -1.6VR.TH-T
SE -1.6AR.TH SE -1.6AR.TH SE -1.6AR.TH-T
3800
1.5
6.9
1500
99
6.18
2.53
51 740 820
RH-207NHDT
1000
C-R:1.68 C-S:2.78
50 720-770 780-820
1100
270 700 850 605 290
35 38 35
2 1
0.9
MS-56 O 0.52
10 10
33.18
4000
1.6
7.0-6.8
1490-1550
97-95
6.41-6.20
2.68-2.58
RH-247VHAT
1200
C-R:2.13 C-S:3.91
36
35-38
0.72
0.59-0.60
Refrigerant oil
NOTE:Test conditions (JIS)
Cooling : Indoor DB27°C WB19°C
Outdoor DB35°C WB24°C
5
Model
NOTE:Test conditions(JIS)
Indoor DB27°C WB19°C Outdoor DB35°C WB24°C
Capacity
Capacity
Electrical
Data
Current
Input
W
A
W
5200
13.1
2850
NOTE:Test condition(SSA 385/386)
Indoor DB29˚C WB19˚C Outdoor DB46˚C WB24˚C
WSSA 385/386 can be applied only to Saudi Arabia.
— — —
Capacity
Capacity
Electrical data
Coefficient of performance(C.O.P)
Compressor
Indoor fan motor
Outdoor fan motor
Dimensions
Weight
Special remarks
Dehumidification Air flow Running current Power input Power factor Starting current Compressor motor current Fan motor current
Model Output Winding resistance (at 20:) Model
Winding resistance (at 20:)
Model
Winding resistance (at 20:)
Indoor unit
Outdoor unit
Indoor unit Outdoor unit Sound level (Hi) Fan speed (Hi) Fan speed regulator Refrigerant filling capacity(R-22)
Refrigerant oil
Thermistor
Function
Power supply
Indoor unit Outdoor 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:) RT61(at 0:)
W
R/h
K/h
A W %
A
A
A
W
"
"
"
mm mm mm mm mm mm
kg kg
dB
dB rpm rpm
kg
R
k"
k"
k"
SE -2AR.TH SE -2AR.TH SE -2AR.TH-T SU -2NR.TH
Cooling
Single phase, 220V, 60Hz Single phase, 220-240V, 50Hz
5900
11.5
2500
99 55
10.66
0.84
2.36
NH-33NCDT
1500
C-R:0.92 C-S:1.93
WHT-BLK :161.9 BLK-BLU : 50.3
BLU-YLW :18.7 YLW-RED :47.2
53 890 860
1.65
MS-32(N-1) O 0.85
PK6V32-ED
RA6V50-OF
WHT-BLK :116.4
BLK-RED :111
SU -2VR.TH SU -2VR.TH-T
2.6
1020
10.4-10.2
2250-2350
9.73-9.51
0.67-0.69
2.49-2.38
NH-38VMDT
C-R:1.07 C-S:2.26
1100
270 700 850 605 290
35 55 39
810-850
810-845 2 1
10 10
33.18
MS-32(N-1) O 1.2
5600
98-96 51-55
1700
52
1.6
6
Function
Power supply
Model
Capacity Dehumidification Air flow Running current Power input Power factor Starting current Compressor motor current Fan motor current
W
R/h
K/h
A W %
A
A
A
W
"
"
"
mm mm mm mm mm mm
kg kg
dB
dB rpm rpm
kg
R
k"
k"
k"
Capacity
Outdoor unit
Indoor unit
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:) RT61(at 0:)
Sound level (Hi) Fan speed (Hi) Fan speed regulator
Outdoor unit
Outdoor unit
Refrigerant filling capacity(R-22)
Thermistor
Weight
Special remarks
Model Output Winding resistance (at 20:) Model
Winding resistance (at 20:)
Model
Winding resistance (at 20:)
SU -2.5NR.TH
Single phase, 220V, 60Hz Single phase, 220-240V, 50Hz
Cooling
3.2
1200
PK6V50-ED
WHT-BLK :101.1 BLK-BLU : 56.1
BLU-YLW :14.7 YLW-RED :34.9
RA6V60-AB
WHT-BLK :81.1 BLK-YLW :92.2
YLW-RED :102.2
SU -2.5VR.TH SU -2.5VR.TH-T
SE -2.5AR.TH SE -2.5AR.TH SE -2.5AR.TH-T
7000
13.6
2920
98
12.52
2.40
54 980 930
NH-38NBDT
1700
C-R:0.83 C-S:1.83
53 860-890 860-890
1100
270 700 850 605 290
35 61 43
2 2
2.15
MS-32(N-1) O 1.2
10 10
33.18
6600
14.0-13.2
3030-3050
98-96
13.11-12.26
2.18-2.16
NH-47VMDT
2200
C-R:0.96 C-S:2.07
56
59
1.08
0.89-0.94
Refrigerant oil
NOTE:Test conditions(JIS)
Indoor DB27°C WB19°C Outdoor DB35°C WB24°C
Capacity
Capacity
Electrical
Data
Current
Input
W
A
W
6100
16.2
3490
NOTE:Test condition(SSA 385/386)
Indoor DB29˚C WB19˚C Outdoor DB46˚C WB24˚C
WSSA 385/386 can be applied only to Saudi Arabia.
— — —
7
OUTLINES AND DIMENSIONS
3
INDOOR UNIT
SE-1.6AR.TH SE-1.6AR.TH-T SE-2AR.TH SE-2AR.TH-T SE-2.5AR.TH SE-2.5AR.TH-T
SU-1.6NR.TH SU-1.6VR.TH SU-1.6VR.TH-T SU-2NR.TH SU-2VR.TH SU-2VR.TH-T SU-2.5NR.TH SU-2.5VR.TH SU-2.5VR.TH-T
605
29220
50
133
500
161
850
74
30
100
157
35
30
Service panel
Liquid refrigerant
pipe joint
Refrigerant pipe
(flare)
Gas refrigerant
pipe joint
Refrigerant pipe
(flare)
12.7 (SU-1.6NR.TH)
15.88 (SU-2/2.5NR.TH)
6.35 (SU-1.6/2NR.TH) (SU-1.6/2VR.TH,SU-1.6/2VR.TH-T)
(SU-1.6/2VR.TH,SU-1.6/2VR.TH-T)
9.52 (SU-2.5NR.TH) (SU-2.5VR.TH,SU-2.5VR.TH-T)
(SU-2/2.5VR.TH,SU-2/2.5VR.TH-T)
Air intake
View A
A
Electrical parts box
Suspension
bolt
pitch
Air outlet
Access door
Service space(It is necessary to maintain a working service area from the ceiling.)
20 mm or more
Access door
Electrical parts box
Suspension bolt pitch
Suspension bolt pitch
Drain plug R1 male
Refrigerent pipe(liquid) {6.35(SE-1.6/2AR.TH)
(SE-1.6/2AR.TH-T)
{9.52(SE-2.5AR.TH)
(SE-2.5AR.TH-T)
Refrigerent pipe(gas) {12.7(SE-1.6AR.TH)
(SE-1.6AR.TH-T)
{15.88(SE-2/2.5AR.TH)
(SE-2/2.5AR.TH-T)
Unit : mm
OUTDOOR UNIT
350
35
248
Drainage 3holes 16.2
20
290
310
345
10cm or more
If the right/left sides or back side is vacant,the front has only to be 50cm unobstructed.
50cm
or m
ore
If the front or right/left sides
are vacant, the top has only
to be 10cm
10cm or more
unobstructed.
10cm or more
35cm
or m
ore
8
REMOTE CONTROLLER
Remote controller cable installation
MITSUBISHI ELECTRIC
12 11 10
9 8 7 6 5 4 3 2 1
29 28 27 26 25 24 23 22 21 20 19 18
TIMER TEMP
TIMER/TEMP.
UP
DOWN
POWER
COOL
ON/OFF
MODE
SELECT
FAN
SPEED
TIMER
MODE
DRY FAN
HIGH
LOW
AUTO STOP
START
75
69
108
117
108
96.5
12
90.5
11.6
3.6
33
117
33
Rear side wiring arrangememt opening
Upper side wiring arrangement opening
Fixing hole
83.5
12
86
4.6
46
9.2
MITSUBISHI ELECTRIC
12 11 10
9 8 7 6 5 4 3 2 1
29 28 27 26 25 24 23 22 21 20 19 18
TIMER TEMP
TIMER/TEMP.
UP
DOWN
POWER
COOL
ON/OFF
MODE
SELECT
FAN
SPEED
TIMER MODE
DRY FAN
HIGH
LOW
AUTO STOP
START
Exposed remote controller cable
Cable can be connected only to the top of the remote controller. (Right side, left side, and buttom are not possible.)
●For exposed remote controller cable installation
Note : The cable for the remote controller has 10m (39ft) length and 12-core with connectors O.D. 5.8.
●For recessed remote controller cable installation
Unit : mm
Remote controller cable
Conduit tube (local arrangement)
Switch box (local arrangement)
Set screw (match with switch box), local arrangement.
9
NOTE :1. Since the indoor fan motor (MF) is connected with 50 Hz power, if 60Hz power is used,change the wiring
connection showing fig:*1
Indoor Fan Moter(MF) for 60Hz
2. About the outdoor side electric wiring referto the outdoor unit electric wiring diagram for servicing.
3. Use copper conductors only. (For field wiring)
4. Symbols below indicate.
/:Terminal block, : Connector
How to remove the terminals shown at ”W” mark.
WIRING DIAGRAM
4
P.C BOARD
INTERFACE
BOARDP.C
CONTROLLER
REMOTE
12 12
104B
CN
120
CN
120
CNR
TB
CIRCUIT BREAKER
POWER SUPPLY ~/N 220-240V 220V
50Hz 60Hz
L
N
GRN/YLW
3
RED
W
W
W
W
W
W
W
BRN
2
N
BLU
WHT
GRN/YLW
BLU
TO OUTDOOR UNIT CONNECTING
TB
5
CN
104
2
RT11
RT12
3
CN201
2 1
2
CN
112
CN
113
YLW BLU
BLU
BLU
YLW
TRANS
8
LDCOM LDC11 LDC12
LDFL LDFM
LDFH
SR142 SR143
SR144
GRN/YLW
WHT ORN RED
BLK
BLK
WHT
4 5 6
1 2 3 7
ELECTRONIC CONTROL P.C BOARD
NR11
C11
52C
RED
ORN
F11
4
3
MF
HIC1
SR141 SR144
RT11
TB
TERMINAL BLOCK
RT12
INDOOR COIL THERMISTOR
HIC1
DC/DC CONVERTER
NR11
MF
52C
F11
SYMBOL
NAME NAME
C11
SYMBOL
FAN MOTOR CAPACITOR
SOLID STATE RELAY
FUSE(3.15A)
COMPRESSOR CONTACTOR
ROOM TEMPERATURE THERMISTOR
VARISTOR
FAN MOTOR
NAMESYMBOL
~
CONTROLLER
REMOTE
220-240V 220V
50Hz 60Hz
220-240V 220V
50Hz 60Hz
”W” shows the terminals with a lock mechanism,so they cannot be removed when you pull the lead wire.
Be sure to pull the wire by pushing the locking lever (project part) of the terminal with a finger.
1Slide the sleeve. 2Pull the wire while pushing the locking lever.
BLUE
YELLOW
60
50
fig: *1
BLUE
SE-1.6AR.TH SE-1.6AR.TH-T SE-2AR.TH SE-2AR.TH-T SE-2.5AR.TH SE-2.5AR.TH-T
INDOOR UNIT
10
OUTDOOR UNIT
SU-1.6NR.TH SU-2NR.TH
NOTE :1. Use copper conductors only. (For field wiring)
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers (N,2,3 and ;).
3. Symbols below indicate.
/:Terminal block, : Connector
4. ”w” shows the terminals with a lock mechanism,so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever (project part) of the terminal with a finger.
1Slide the sleeve. 2Pull the wire while pushing the locking lever.
BLK
BLK
YLW
VLT
26C
BLU
WHT
RED
RED
BLU
WHT
ORN
RED
52C
52C
4
3
2
1
C2
WHT BLK
ORN
RED
WHT
MF
MC
CR
A2
A1
BLU
F
TB2
L1/1
L3/5
R
C
S
BLK
RED
C1
T1/2
T3/6
BLU
GRN/YLW
2
3
TO INDOOR
UNIT
CONNECTING
W
W
W
TB
220V, 60Hz
220V, 60Hz
THERMAL SWITCH26C
TB2 TERMINAL BLOCKF FUSE(2A)
CR SURGE ABSORBER
TERMINAL BLOCK
COMPRESSOR CONTACTOR52C
TB
FAN MOTOR
(INNER THERMOSTAT)
(INNER THERMOSTAT)
COMPRESSOR
MC
FAN MOTOR CAPACITOR
COMPRESSOR CAPACITOR
C2
C1
NAME
SYMBOL
NAME
SYMBOL
NAME
SYMBOL
MF
N
THERMAL SWITCH26CTB2 TERMINAL BLOCKF FUSE(2A)
CR SURGE ABSORBER
THERMAL REED SWITCH26F1
FAN MOTOR RELAYX1
TERMINAL BLOCK COMPRESSOR CONTACTOR52CTB
FAN MOTOR
(INNER THERMOSTAT)
(INNER THERMOSTAT)
COMPRESSOR
MF
MC
FAN MOTOR CAPACITOR
COMPRESSOR CAPACITOR
C2
C1
NAME
SYMBOL
NAME
SYMBOL
NAME
SYMBOL
YLW
VLT
BLK
CR
A2
A1
26C
BLK
BLU
ORN
BLU
X1
26F1
F
RED
8
7
BLU
RED
WHT
52C
TB2
RED
C2
GRN/YLW
2
3
RED
N
W
W
W
TB
220V, 60Hz
220V, 60Hz
L1/1
L3/5
MC
R
C
S
BLK
RED
C1
WHT
52C
T1/2
T3/6
BLU
TO INDOOR
UNIT
CONNECTING
1
3
5
X1
6
5
4
3
2
1
YLW
MF
YLW
BLK BLK
WHT
RED ORN
WHT
ORN
RED
SU-2.5NR.TH
11
OUTDOOR UNIT
SU-1.6VR.TH SU-2VR.TH SU-1.6VR.TH-T SU-2VR.TH-T
NOTE :1. Use copper conductors only. (For field wiring)
2. Since the indoor and outdoor unit connecting wires have polarity, connect them according to the numbers (N,2,3 and ;).
3. Symbols below indicate.
/:Terminal block, : Connector
4. ”w” shows the terminals with a lock mechanism,so they cannot be removed when you pull the lead wire. Be sure to pull the wire by pushing the locking lever (project part) of the terminal with a finger.
1Slide the sleeve. 2Pull the wire while pushing the locking lever.
VLT
YLW
BLU
WHT
WHT
RED
RED
BLU
WHT
ORN
RED
52C
52C
4
3
2
1
C2
WHT BLK
ORN
RED
WHT
MF
MC
CR
A1
A2
BLU
F
TB2
L1/1
L3/5
R
C
S
BLK
RED
C1
T1/2
T3/6
BLU
GRN/YLW
2
3
TO INDOOR
UNIT
CONNECTING
N
TB
220-240V,50Hz
220-240V,50Hz
W
W
W
YLW
VLT
BLU
ORN
1
3
5
X1
BLU
X1
26F1
F
RED
8 7
BLU
RED
WHT
52C
CR
TB2
WHT
RED
A1
A2
6
5
4
3
2
1
YLW
C2
MF
YLW
BLK BLK
WHT
RED ORN
WHT
ORN
RED
L1/1
L3/5
MC
R
C
S
BLK
RED
C1
WHT
52C
T1/2
T3/6
BLU
GRN/YLW
2
3
RED
TO INDOOR
UNIT
CONNECTING
N
TB
220-240V,50Hz
220-240V,50Hz
W
W
W
SU-2.5VR.TH SU-2.5VR.TH-T
TB2 TERMINAL BLOCKF FUSE(2A)
CR SURGE ABSORBER
TERMINAL BLOCK
COMPRESSOR CONTACTOR52C
TB
FAN MOTOR
(INNER THERMOSTAT)
(INNER THERMOSTAT)
COMPRESSOR
MF
MC
FAN MOTOR CAPACITOR
COMPRESSOR CAPACITOR
C2
C1
NAME
SYMBOL
NAME
SYMBOL
NAME
SYMBOL
TB2 TERMINAL BLOCKF FUSE(2A)
CR SURGE ABSORBER
THERMAL READ SWITCH26F1
FAN MOTOR RELAYX1
TERMINAL BLOCK COMPRESSOR CONTACTOR52CTB
FAN MOTOR
(INNER THERMOSTAT)
(INNER THERMOSTAT)
COMPRESSOR
MF
MC
FAN MOTOR CAPACITOR
COMPRESSOR CAPACITOR
C2
C1
NAME
SYMBOL
NAME
SYMBOL
NAME
SYMBOL
12
5
REFRIGERANT SYSTEM DIAGRAM
Indoor heat exchanger
Outdoor heat exchanger
Distributor (With strainer)
Flared connection
Room temperature thermistor
Indoor coil thermistor
Flared connection
Stop valve
Stop valve (with service port)
Strainer
Strainer
Strainer
Capillary tube (
[3.0x[1.8xR100
)
Capillary tube (
[3.0x[1.8xR550
)
Compressor
Refrigerant pipe [12.7 (Option) (with heat insulator)
Refrigerant pipe (Option) [6.35 (with heat insulator)
Dis pressure regulator
INDOOR UNIT
SE-1.6AR.TH
OUTDOOR UNIT
SU-1.6NR.TH
Indoor heat exchanger
Outdoor heat exchanger
Distributor (With strainer)
Flared connection
Room temperature thermistor
Indoor coil thermistor
Flared connection
Stop valve
Stop valve (with service port)
Strainer
Strainer
Strainer
Capillary tube (
[3.0x[2.0xr100
)
Capillary tube (
[3.0x[2.0xr700
)
Compressor
Refrigerant pipe [15.88 (Option) (with heat insulator)
Refrigerant pipe (Option) [6.35 (with heat insulator)
Accumulator Dis pressure regulator
INDOOR UNIT
SE-2AR.TH
OUTDOOR UNIT
SU-2NR.TH
INDOOR UNIT
OUTDOOR UNIT
SE-2.5AR.TH
SU-2.5NR.TH
Indoor coil thermistor
Room temperature thermistor
Indoor heat exchanger
Strainer
Distributor (With strainer)
Strainer
Refrigerant pipe [15.88 (Option) (with heat insulator)
Flared connection
Flared connection
Refrigerant pipe (Option) [9.52 (with heat insulator)
Stop valve (with service port)
Stop valve
Dis pressure regulator
Accumulator
Capillary tube (
[3.0x[2.0xR100
Capillary tube (
[3.0x[2.0xR600
Compressor
)
Strainer
)
Outdoor heat exchanger
13
INDOOR UNIT
SE-1.6AR.TH SE-1.6AR.TH-T
OUTDOOR UNIT
SU-1.6VR.TH SU-1.6VR.TH-T
Indoor heat exchanger
Outdoor heat exchanger
Distributor (With strainer)
Flared connection
Room temperature thermistor
Indoor coil thermistor
Flared connection
Stop valve
Stop valve (with service port)
Strainer
Strainer
Strainer
Capillary tube (
[3.0x[2.0xr570
)
Compressor
Accumulator
Refrigerant pipe [15.88 (Option) (with heat insulator)
Refrigerant pipe (Option) [6.35 (with heat insulator)
INDOOR UNIT
SE-2AR.TH SE-2AR.TH-T
OUTDOOR UNIT
SU-2VR.TH SU-2VR.TH-T
INDOOR UNIT
OUTDOOR UNIT
SE-2.5AR.TH SE-2.5AR.TH-T
SU-2.5VR.TH SU-2.5VR.TH-T
Indoor coil thermistor
Room temperature thermistor
Indoor heat exchanger
Distributor (With strainer)
Strainer
Strainer
Refrigerant pipe [12.7 (Option) (with heat insulator)
Flared connection
Flared connection
Refrigerant pipe (Option) [6.35 (with heat insulator)
Stop valve (with service port)
Stop valve
Compressor
Capillary tube (
[3.0x[1.8xr800
Strainer
)
Outdoor heat exchanger
Indoor coil thermistor
Room temperature thermistor
Indoor heat exchanger
Distributor (With strainer)
Refrigerant pipe [15.88 (Option) (with heat insulator)
Strainer
Strainer
Flared connection
Flared connection
Refrigerant pipe (Option) [9.52 (with heat insulator)
Stop valve (with service port)
Dis pressure regulator
Stop valve
Accumulator
Capillary tube (
[3.0x[2.0xR100
Capillary tube (
[3.0x[2.0xR700
Compressor
)
Strainer
)
Outdoor heat exchanger
14
Models
A: Refrigerant piping Max.length 15m(49ft)
Max. Height difference *
7m(23ft)
MAX. REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE
SE-1.6AR.TH SE-1.6AR.TH-T SE-2AR.TH SE-2AR.TH-T SE-2.5AR.TH SE-2.5AR.TH-T
Length : m(ft)
A
15(49)
Piping size O.D. : mm (in.)
Gas
Liquid
{12.7(1/2)
{6.35(1/4)
{15.88(5/8)
wIt does not matter which unit is higher.
Models
SE-1.6AR.TH SE-1.6AR.TH-T SE-2AR.TH SE-2AR.TH SE-2AR.TH-T SE-2.5AR.TH SE-2.5AR.TH-T
Outdoor unit:
precharged
(up to 7m)
900
1650
Refrigerant piping length (one way)
7m08m159m3010m4511m6012m7513m9014m
105
15m
120
Calculation : og=15g/mo(Refrigerant piping length minus 7m)
If pipe length exceeds 7m, additional refrigerant (Freon 22) charge is required
ADDITIONAL REFRIGERANT CHARGE (R-22 : g)
{9.52(3/8)
2150
1600
SU-1.6VR.TH SU-1.6NR.TH SU-1.6VR.TH-T SU-2VR.TH SU-2NR.TH SU-2VR.TH-T SU-2.5VR.TH SU-2.5NR.TH SU-2.5VR.TH-T
Indoor unit
Outdoor unit
SU-1.6VR.TH SU-1.6NR.TH SU-1.6VR.TH-T SU-2NR.TH SU-2VR.TH SU-2VR.TH-T SU-2.5VR.TH SU-2.5NR.TH SU-2.5VR.TH-T
Indoor unit
Outdoor unit
15
Run the vacuum pump for more than 15 minutes and at this time confirm that the pressure gauge indicates
-0.1 Mpa (-76 cmHg).
EVACUATION PROCEDURES
Connect the refrigerant pipes (both the liquid and gas pipes) between the indoor and the outdoor units.
Remove the service port cap of the stop valve on the side of the outdoor unit gas pipe. (The stop valve will not work in its initial state fresh out of the factory (totally closed with cap on)).
Connect the gauge manifold valve and the vacuum pump to the service port of the stop valve on the gas pipe side of the outdoor unit.
Check the vacuum with the gauge manifold valve, then close the gauge manifold valve, and stop the vacuum pump.
Leave it as is for one or two minutes. Make sure the pointer of the gauge manifold valve remains in the same position.
After refrigerant pipes are connected and evacuated, fully open all stop valves on gas and liquid pipe sides. Operating without fully opening lowers the performance and causes trouble.
Pipe length : 7m maximum No gas charge is needed.
Pipe length exceeding 7m Charge the prescribed amount of gas.
Remove the gauge manifold valve quickly from the service port of the stop
Tighten the cap to the service port to obtain the initial status.
Retighten the cap.
Leak test
16
DATA
6
The standard data contained in these specifications apply only to the operation of the air conditioner under normal condition.
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.
(1) GUARANTEED VOLTAGE
Rated voltage : ±10% SU-NR(198~242V 60Hz) / SU-VR(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
The table of indoor air wet-bulb temperature difference at the bottom on 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 termometers 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 avoid direct rays of the sun.
3. Check that the air filter is cleaned.
4. Open windows and doors of the room.
5. Press the TEST RUN switch to start the 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.
Air outlet
Air inlet
Wet-and dry-bulb thermometers
Dry-bulb thermometers
BACK VIEW
INDOOR UNIT
OUTDOOR UNIT
SU-NR (60Hz)
SU-VR (50Hz)
SE-1.6AR.TH
SE-1.6AR.TH-T
SE-2AR.TH
SE-2AR.TH-T
SE-2.5AR.TH-T
SE-2.5AR.TH
8.6
7.9
7.2
6.5
5.9
5.2
8.0
7.3
6.7
6.0
5.4
4.8
8.6
7.9
7.4
6.5
5.9
5.2
10.4
8.5
9.5
7.8
8.7
7.1
7.8
6.4
7.0
5.8
6.2
5.1
SE-1.6AR.TH
SE-2AR.TH
10.5
9.6
8.7
7.9
7.1
6.3
SE-2.5AR.TH
17
Dry Bulb temperature (˚C)
Relative humidity (%)
(4) OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT
COOL operation
1 Both indoor and outdoor units are under the same temperature/humidity condition.
2 Air flow should be set at MAX.
0.8
0.7
0.6
0.5
0.4
0.3 15 18 20 25 30 32 35(:)
50 60 70 (%)
Ambient temperature (:) / Ambient humidity (%)
Outdoor low pressure
8
7
6
5
4
3
15 18 20 25 30 32 35(:)
50 60 70 (%)
Ambient temperature (:) / Ambient humidity (%)
Outdoor unit current (A)
8
7
5
6
4
3
(MPa•G)
(kgf/F• G)
220V
SE-1.6AR.TH / SU-1.6NR.TH
3 The unit of pressure has been changed to MPa based on the international system of units(SI unit system).
The converted score against the traditional unit system can be gotten according to the formula below.
1(MPa • G) =10.2(kgf/
f
f
• G)
0.7
0.6
0.5
0.4
0.3
0.2 15 18 20 25 30 32 35(:)
50 60 70 (%)
Ambient temperature (:) / Ambient humidity (%)
Outdoor low pressure
12
11
10
9
8
7
15 18 20 25 30 32 35(:)
50 60 70 (%)
Ambient temperature (:) / Ambient humidity (%)
Outdoor unit current (A)
220V
(MPa•G)
7
6
4
3
2
5
(kgf/F• G)
SE-2AR.TH / SU-2NR.TH
220V
0.7
0.6
0.5
0.4
0.3
0.2 15 18 20 25 30 32 35(:)
50 60 70 (%)
Ambient temperature (:) / Ambient humidity (%)
Outdoor low pressure
14
13
12
11
10
9
8
15 18 20 25 30 32 35(:)
50 60 70 (%)
Ambient temperature (:) / Ambient humidity (%)
Outdoor unit current (A)
(MPa•G)
7
6
4
3
2
5
(kgf/F• G)
SE-2.5AR.TH / SU-2.5NR.TH
18
0.7
0.6
0.5
0.4
0.3
0.2 15 18 20 25 30 32 35(:)
50 60 70 (%)
Ambient temperature (:) / Ambient humidity (%)
Outdoor low pressure
11
10
9
8
7
6
15 18 20 25 30 32 35(:)
50 60 70 (%)
Ambient temperature (:) / Ambient humidity (%)
Outdoor unit current (A)
220V
(MPa•G)
7
6
4
3
2
5
(kgf/F• G)
240v
SE-1.6AR.TH / SU-1.6VR.TH SE-1.6AR.TH-T / SU-1.6VR.TH-T
0.8
0.7
0.6
0.5
0.4
0.3 15 18 20 25 30 32 35(:)
50 60 70 (%)
Ambient temperature (:) / Ambient humidity (%)
Outdoor low pressure
8
7
6
5
4
3
15 18 20 25 30 32 35(:)
50 60 70 (%)
Ambient temperature (:) / Ambient humidity (%)
Outdoor unit current (A)
8
7
5
6
4
3
(MPa•G)
(kgf/F• G)
220v
240v
SE-2AR.TH / SU-2VR.TH SE-2AR.TH-T / SU-2VR.TH-T
220V
0.7
0.6
0.5
0.4
0.3
0.2 15 18 20 25 30 32 35(:)
50 60 70 (%)
Ambient temperature (:) / Ambient humidity (%)
Outdoor low pressure
14
13
12
11
10
9
8
15 18 20 25 30 32 35(:)
50 60 70 (%)
Ambient temperature (:) / Ambient humidity (%)
Outdoor unit current (A)
(MPa•G)
7
6
4
3
2
5
(kgf/F• G)
240v
SE-2.5AR.TH / SU-2.5VR.TH SE-2.5AR.TH-T / SU-2.5VR.TH-T
19
(5) INDOOR FAN PERFORMANCE AND CORRECTED AIR FLOW
Air flow (K/X)
Recommended range
80
60
40
20
0
15510 2025
External static pressure(Pa)
(1Pa = 0.1mmAq)
Fan Performance
SE-2AR.TH (60Hz)
Corrected Airflow
Capacity Input
1.0
1.1
1.2
0.8
0.9
510152025
Correction factor
Air flow (K/X)
Air flow (K/X)
Recommended range
80
100
60
40
20
0
15510 2025
External static pressure(Pa)
(1Pa = 0.1mmAq)
Fan Performance
SE-2.5AR.TH (60Hz)
Corrected Air flow
Capacity Input
0.8
0.9
1.1
1.0
1.2
510152025
Correction factor
Air flow (K/X)
SE-1.6AR.TH (60Hz)
Fan Performance
Recommended range
80
1.3
60
40
20
External static pressure(Pa)
(1Pa = 0.1mmAq)
0
105 7 15 20 25
Air flow (K/X)
1.2
1.1
1.0
Correction factor
0.9
0.8
Corrected Air flow
510152025
Air flow (K/X)
Capacity Input
20
Air flow (K/X)
Recommended range
80
60
40
20
0
15510 2025
External static pressure(Pa)
(1Pa = 0.1mmAq)
Fan Performance
SE-2AR.TH (50Hz) SE-2AR.TH-T
Corrected Airflow
Capacity Input
1.0
1.1
1.2
0.8
0.9
510152025
Correction factor
Air flow (K/X)
25
Air flow (K/X)
Recommended range
80
60
40
20
0
105152025
External static pressure(Pa)
(1Pa = 0.1mmAq)
Fan Performance
SE-1.6AR.TH (50Hz) SE-1.6AR.TH-T
Corrected Air flow
Capacity Input
1.0
1.2
1.3
1.1
0.8
0.9
5101520
Correction factor
Air flow (K/X)
Air flow (K/X)
Recommended range
80
100
60
40
20
0
15510 2025
External static pressure(Pa)
(1Pa = 0.1mmAq)
Fan Performance
SE-2.5AR.TH (50Hz) SE-2.5AR.TH-T
Corrected Air flow
Capacity Input
0.8
0.9
1.1
1.0
1.2
510152025
Correction factor
Air flow (K/X)
21
MICROPROCESSOR CONTROL
7
1. COOL operation
(1) Compressor control
1 3-minute time delay
To prevent overload, the compressor will not start within 3 minutes after stop.
2 The compressor runs when the room temperature is higher than the set temperature.
The compressor stops when the room temperature is equal to or lower than the set temperature.
3 The compressor stops in check mode.
(2) Indoor fan control
Indoor fan speed LOW/HIGH depends on the remote controller setting.
(3) Outdoor fan control
POWER ON/OFF with the compressor.
(4) 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 will not work for 5 minutes after the compressor starts. During the coil frost prevention compressor stops and the indoor fan operates at the set speed for 5 minutes. After that, if RT12 still reads or below -1°C, this mode prolonged untill theRT12 reads over -1°C. After the coil frost prevention stops, units will not enter this mode again at least 5 minutes even RT12 reads -1°C.
2 Time control
When the three conditions below 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 Low. c. Room temperature is below 26°C. When compressor stops ,the accumulated time is canceled and when compressor restarts, time counting starts from the beginning. Time counting also stops temporarily when the indoor fan speed becomes High or the room temperature exceeds 26°C. However, when two of the above conditions (b.And c.) are satisfied again time accumulation is resumed.
<How to operate>
1 Press POWER ON / OFF button. 2 Press MODE SELECT button to set operation mode to COOL. 3 Check lamp is ON and set desired temperature with UP or DOWN but-
ton.
NOTES : 1. When lamp is ON, press TIMER/TEMP button to change the
display to temperature mode.
2. Set temperature changes by 1°C in the range 18 ~ 29°C each time UP or DOWN button is pressed.
3. The lighting lamp shows the set temperature, and the flashing lamp shows the room temperature. When the room temperature is equal to the set temperature, the lamp keeps lighting, 0.5 seconds brightly and 0.5 seconds faintly.
TIMER
<COOL operation time chart>
W1 Even if the room temperature rise above the set temperature during this period, the compressor will not start until this
period has ended.
MITSUBISHI ELECTRIC
12 11 10
9 8 7 6 5 4 3 2 1
29 28 27 26 25 24 23 22 21 20 19 18
TIMER TEMP
TIMER/TEMP.
UP
DOWN
POWER
COOL
ON/OFF
MODE
SELECT
FAN
SPEED
TIMER MODE
DRY FAN
HIGH
LOW
AUTO
STOP
START
TEMP
Thermostat
Indoor fan
Operation starts by POWER button ON.
ON
OFF
ON
OFF
Room temperature becomes equal to set temperature.
Room temperature rises above set temperature.
LOW or HIGHLOW or HIGH
Operation stops by POWER button OFF.
Compressor Outdoor fan
ON
OFF
}
MIN. 3 minutes 1
22
2. DRY operation
<How to operate>
1 Press POWER ON / OFF button. 2 Press MODE SELECT button to set operation mode to DRY. 3 Check lamp is ON and set desired temperature with UP or DOWN but-
ton.
NOTES : 1. When lamp is ON, press TIMER/TEMP button to change the
display to temperature mode.
2. Unable to set temperature. POWER ON/OFF are operated by microprocessor control automatically.
3. The flashing lamp shows the room temperature.
TIMER
<DRY operation time chart> In case of the room temperature of 23: and above.
Example
Thermostat
Indoor fan
Outdoor fan compressor
1st ON
8min.
1min.
4min.
3min.
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
(1) Setting temperature
Follow the right chart with according to the initial room temperature. When the room temperature is 13: or under, dry operation does not work.
(2) ON/OFF control
When the room temperature is 23°C or over:
Compressor operates by temperature control and time control.
1 Set temperature is controlled to fall 2°C above from initial set temperature. 2 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. Indoor fan and outdoor fan operate in the same cycle as the compressor.
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.
(3) Coil frost prevention
The operation is same as that of coil frost prevention during COOL mode. However the indoor fan speed becomes the set speed or Low.
TIMER TEMP
12 11 10
9 8 7 6 5 4 3 2 1
29 28 27 26 25 24 23 22 21 20 19 18
TIMER/TEMP.
UP
DOWN
POWER
ON/OFF
COOL
MODE
DRY
SELECT
FAN
HIGH
FAN
SPEED
LOW
AUTO
STOP
TIMER
MODE
START
MITSUBISHI ELECTRIC
TEMP
23
3. FAN operation
<How to operate>
1 Press POWER ON / OFF button. 2 Press MODE SELECT button to set operation mode to FAN.
NOTES : Temperature can not be set in FAN operation.
MITSUBISHI ELECTRIC
12 11 10
9 8 7 6 5 4 3 2 1
29 28 27 26 25 24 23 22 21 20 19 18
TIMER TEMP
TIMER/TEMP.
UP
DOWN
POWER
COOL
ON/OFF
MODE
SELECT
FAN
SPEED
TIMER MODE
DRY FAN
HIGH
LOW
AUTO
STOP
START
(1) Indoor fan control
The indoor fan speed LOW / HIGH depends on the remote controller setting.
24
4. TIMER operation
<Timer function>
AUTO STOP ·········Air conditioner stops after the set time lapses. AUTO START ········Air conditioner starts after the set time lapses.
<How to operate
●
AUTO STOP timer>
1 While lamp is lighting, press TIMER MODE button.
and lamps turn ON.
2 Set the time for the AUTO STOP timer with the UP or DOWN button.
NOTE : The time setting is in 1 hour units up to 12 hours.
3 With the lapse of time, the timer lamps turn OFF one by one, showing the
remaining time.
4 To cancel the AUTO STOP timer and continue operation, press the TIMER MODE
button. To cancel the AUTO STOP timer and stop operation, press the POWER ON/OFF button.
<How to operate AUTO START timer>
1 While lamp is OFF, press TIMER MODE button.
and lamps turn ON.
2 Set the time for the AUTO START timer with the UP or DOWN button.
NOTE : The time setting is in 1 hour units up to 12 hours.
3 With the lapse of time, the timer lamps turn OFF one by one, showing the
remaining time.
4 To cancel the AUTO START timer and keep the unit OFF, press the TIMER MODE
button. To cancel the AUTO START timer and start operation, press the POWER ON / OFF button.
TIMER
POWER
● POWER
5. TEST RUN
The unit starts the test run by pressing both the UP and DOWN buttons simultaneously for more than two seconds during
lamp ON or the unit OFF.
● The test run automatically stops in 2 hours.
● Set temperature is not displayed during test run.
●
During the test run, the thermo function are as below.
● Room temperature is displayed by the flashing green lamp when TIMER/TEMP button is pressed.
● The test run can be released by pressing the POWER ON / OFF or the TIMER MODE button.
TIMER
Initial 30 minutes
Thermo ON at the all time
Since 30 minutes passed to terminating of the
test run
Thermo ON/OFF as 24: of setting
temperature
6. SERVICE FUNCTION
AUTO RESTART FUNCTION
Operating the J2 Jumper line on the remote control Interface P.C.board of the indoor unit. The function can set the auto restart function.(See page 29.) wAuto restart setting on the shipping.
J2 = Auto restart No J2 = No auto restart
TIMER TEMP
TIMER/TEMP.
29
12
28
11
27
10
26
9
25
8
24
7
23
6
22
5
21
4
20
3
19
2
18
1
UP
DOWN
POWER
COOL DRY FAN
HIGH
LOW
AUTO STOP
START
MITSUBISHI ELECTRIC
ON/OFF
MODE
SELECT
FAN
SPEED
TIMER MODE
TIMER
25
TROUBLESHOOTING
8
1. Cautions on troubleshooting
(1) Before troubleshooting, check the followings:
1Check the power supply voltage. 2Check the indoor/outdoor connecting wire for mis-wiring.
(2) Take care the followings during servicing.
1 Before servicing the air conditioner, be sure to first turn off the remote controller to stop the main unit, and then 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.
26
2. Self diagnostic function
(1) When trouble occurs during operation, the unit stops and enters the self-diagnotic mode, and displays the trouble
location with the timer lamps on the remote controller. All the other lamps are OFF.
(2) To activate the self-diagnostic function for service, press the UP and DOWN buttons simultaneously for more than two
seconds during operation with lamp ON.
(3) The timer lamps show the latest trouble. Trouble data is memorised unit the nest trouble occurs, even when the breaker
turns OFF. To clear the memory, press the UP and DOWN buttons simultaneously for more than two seconds during
the test run. (4) All buttons except the POWER ON/OFF button are unavailable during the self-diagnostic mode. (5) To release the self-diagnostic mode, press the POWER ON/OFF button.
TEMP.
12
11
10
9
8
7
6
5
1
2
3
4
(Indicates that the unit is in self-diagnostic mode)
TIMER TEMP.
29 Remote controller interface signal error
28
27 Indoor thermistor abnormally
26
25
24
23
22
18
19
20
21
27
3. Trouble shooting
(1) In case of being indicated irregularity on the self diagnoses
No Phenomenon Cause Countermeasure
29 Remote controller interface
signal error
Mis-wiring of the Interface P.C.board.
Reinsert the wiring connector of the Interface P.C.board.
Trouble of the Interface P.C.board.
Exchange the Interface P.C.board.
Trouble of the Indoor P.C.board. Exchange the Indoor P.C.board.
27
Indoor coil thermistor Mis-connecting of the Indoor coil
thermistor.
Reinsert the connector (CN112).
Trouble of the Indoor coil thermistor.
Room temperature thermistor
Trouble of the Indoor P.C.board.
Check the resistance value of the thermistor.
Mis-connecting of the room temperature thermistor.
Exchange the Indoor P.C.board.
Reinsert the connector (CN113).
Trouble of the room temperature thermistor.
Trouble of the Indoor P.C.board.
Exchange the Indoor P.C.board.
Check the resistance value of the thermistor.
(2) Other case
Phenomenon
Cause
Countermeasure
Not working of remote controller switch ON/OFF
Mis-connecting the remote control wiring. Reinsert the connector of remote control wiring.
Mis-connecting the Interface P.C.board.
Reinsert the wiring connector of Indoor P.C.board and Interface P.C.board.
Short circuit the protecting parts in the Indoor P.C.board.
Check the varistor(NR11) and fuse(F11) out in the Indoor P.C.board.
Trouble of the Interface P.C.board.
Check the Interface P.C.board out.
Trouble of the Indoor P.C.board.
Working the Indoor units and not working the outdoor units.
Trouble of the remote controller. Exchange the remote controller.
Wiring between the indoor and outdoor is coming off.
Check the wiring out between the indoor and outdoor.
Difference of wiring polarity between the indoor and outdoor.
Exchange the contactor.
Trouble of the contact(52C)
Not rotating the fan in the indoor unit.
Trouble of the compressor(MC) and outdoor fan motor(MF).
Check the compressor and fan motor out.
Frequency switching connector is coming off.
Fan motor connector is coming off.
Check the connector out.
Check the frequency (50Hz/60Hz) in the indoor unit.
Trouble of the Indoor P.C.board. Check the fan motor output of the Indoor
P.C.board.
Trouble of the fan motor.
Check the resistance value between the each tap of fan motor.
Check the Indoor P.C.board out.
28
Indoor coil thermistor (RT12) Room temperature thermistor (RT11)
0
0
10
20
30
40
10 20 30 40 50 60
Temperature ( C)
Resistance (K')
(1). Indoor electronic control P.C. board
Fan motor power supply 220 - 240V AC
75643218
60Hz
Hi
Fuse 250V AC 3.15A
Power supply input 220-240V AC
12V DC
5V DC
+
–
+
–
Time short point
Indoor coil thermistor (RT12)
50Hz
Room temperature thermistor (RT11)
4. Test point of P.C.board
29
(2) Remote controller interface P.C. board
AUTO RESTART FUNCTION
+ JP17= 5V DC
+ JP16=12V DC
– JP15= 0V DC
To Indoor electronic control P.C.board
To REMOTE CONTROLLER
30
Measure the resistance between the terminals with a tester. (Coil wiring temperature10°C ~ 30°C)
Compressor
Room temperature thermistor
5. Trouble criterion of main parts
Part name
Indoor coil thermistor
Indoor fan motor
Outdoor fan motor
Check method and criterion
Measure the resistance with a tester. (Part temperature 10°C ~ 30°C)
Measure the resistance between the terminals with a tester. (Coil wiring temperature -10°C ~ 40°C)
Measure the resistance between the terminals with a tester. (Coil wiring temperature -10°C ~ 40°C)
Figure
C
S
R
BLK
RED
WHT
BLK RED ORNYLW
BLU
WHT
GRN
YLW
P
Normal
8kΩ ~ 20kΩ
Abnormal
Opened or short-circuited
Normal
NR
1.52~
1.87
Ω
2.41~
2.96
Ω
2
0.81~
1.00
Ω
1.70~
2.09
Ω
C-R
C-S
Normal
Abnormal
Opened or
short-circuited
2AR
WHT-BLK
Normal
Abnormal
Opened or
short-circuited
102 ~ 126Ω
97.9 ~ 120Ω
2NR/2VR
WHT-BLK
BLK-RED
1.6NR/1.6VR
115 ~ 141Ω 118 ~ 146Ω
1.6AR
155.5~168.2Ω241.4~261.2Ω
BLK-BLU
48.3~52.3Ω19.0~20.6Ω
BLU-YLW
17.8~19.4Ω25.4~27.5Ω
YLW-RED
45.2~49.0Ω60.6~65.6Ω
Abnormal
Opened or
short-circuited
1.6/2NR
1.6/2VR
BLK
RED ORN
WHT
MAIN
AUX
P
: Inner protector
p
2.5
0.73~
0.90
Ω
1.61~
1.98
Ω
71.5 ~ 87.5Ω
90.1 ~ 110.2Ω
2.5NR/2.5VR
BLK-YLW
80.8 ~ 99.4Ω
2.5NR
2.5VR
BLKYLW
RED ORN
WHT
MAIN
AUX.2
AUX.1
P
SE-1.6AR SU-1.6NR SU-1.6VR SE-2AR SU-2NR SU-2VR SE-2.5AR SU-2.5NR SU-2.5VR
2.5AR
97.0~105Ω
53.8~58.3Ω
14.0~15.3Ω
33.4~36.2Ω
VR
1.87~
2.30
Ω
3.44~
4.22
Ω
1.6 NR
VR
0.94~
1.16
Ω
1.99~
2.44
Ω
NR
VR
0.84~
1.04
Ω
1.82~
2.24
Ω
31
1. Removing the electrical parts
(1) Remove the 2 screws and the electrical parts cover.
(See Photo 1.)
● Indoor controller board
● Transformer
● Run capacitor
● Fuse (3.15A)
● Terminal block
(See Photo 2.)
DISASSEMBLY PROCEDURE9
Indoor Unit : SE-1.6AR.TH SE-2AR.TH SE-2.5AR.TH
SE-1.6AR.TH-T SE-2AR.TH-T SE-2.5AR.TH-T
OPERATING PROCEDURE
PHOTOS
2. Removing the indoor coil thermistor(RT12)
(1) Remove the electrical parts cover.
(See Photo 1.)
(2) Remove the 2 screws and the service panel.
(See Photo 1.)
(3) Remove the thermister (RT12) from the holder.
(See Photo 3.)
(4) Disconnect the connector (CN112) from the indoor
controller board and pull the lead wire of thermistor (RT12) out.
Drain pan
Electrical parts cover
Service panel
Front Panel
Set screws (for drain pan)
Fuse
Set screws
Terminal block
Transformer
Run capacitor
Thermistor
(RT12)
Photo 2.
Photo 3.
Photo 1.
32
3. Removing the room temp. thermistor(RT11)
(1) Remove the electrical parts cover.
(See Photo 1.)
(2) Remove the front panel at fan side.(12 screws)
(See Photo 1.)
(3) Remove the thermister (RT11) from the fan casing.
(See Photo 4.)
(4) Disconnect the connector (CN113) from the indoor
controller board and pull the lead wire of thermistor (RT11)out.
PHOTOS
OPERATING PROCEDURE
4. Removing the sirocco fan and the fan motor.
(1) Remove the electrical parts cover.
(See Photo 1.)
(2) Remove the front panel at fan side.(12 screws)
(See Photo 1.)
(3) Disconnect the fan motor connector from the indoor
controller board.
(See Photo 2.)
(4) Remove the thermistor (RT11) from the fan casing.
(See Photo 4.)
(5) Undo the 4 claws and remove the fan claws.(down side)
<Either left or right>
(See Photo 4.)
(6) Remove the motor bands. (A screw each on left and
right.)
(See Photo 4.)
(7) Disconnect the earth wire.(from the fan motor leg.)
(See Photo 5.)
(8) Remove the fan motor and the sirocco fan by assembly.
(See Photo 5.)
(9) Unscrew the setting screw and remove the sirocco fan.
<Either left or right>
(See Photo 5.)
Set screw
Earth wire
Motor bands
Thermistor
(RT11)
Claws
Screws
Fan casing
Fan motor
Claws
Photo 4.
Photo 5.
33
5. Removing the drain pan
(1) Unscrew each set screw on the right and left, and
remove the drain pan pushing it toward the back.
(See Photo 1.)
PHOTOS
OPERATING PROCEDURE
6. Removing the heat exchanger
(1) Remove the drain pan.
(See Photo 1.)
(2) Remove the under flange at heat exchanger side.
(16 screws)
(See Photo 6.)
(3) Remove the 4 screws of heat exchanger.( 2 screws
each on left and right)
(See Photo 7.)
(4) Remove the service panel.( 3 screws )
(See Photo 7.)
(5) Put the heat exchanger down to the fan motor and pull it
toward you.
(See Photo 7.)
Screws
Under flange
Screws
(for heat exchanger)
Service panel
Screws (for service panel)
Heat exchanger
Photo 6.
Photo 7.
34
OPERATING PROCEDURE PHOTOS
1. Removing the cabinet
(1) Remove the screws of the cabinet. (2) Hold the bottom of the cabinet on the both side to remove
the cabinet.
2. Removing the electrical parts
(1) Remove the cabinet.(Refer to 1) (2) Remove the following parts.
•Compressor capacitor(C1)
•Outdoor fan capacitor(C2)
•Terminal block(TB,TB2)
•Fan motor relay(X1)[For SU-2.5NR.TH, SU-2.5VR.TH and SU-2.5VR.TH-T]
•Contactor(52C)
•Fuse(F)
Outdoor Unit : SU-1.6NR.TH SU-2NR.TH SU-2.5NR.TH
SU-1.6VR.TH SU-2VR.TH SU-2.5VR.TH SU-1.6VR.TH-T SU-2VR.TH-T SU-2.5VR.TH-T
Photo 1
Photo 3
Photo 2
Screws
Screws
Service panel
Compressor run capacitor
Compressor
Contactor
Terminal bed
Fuse
35
OPERATING PROCEDURE
PHOTOS
3. Removing the outdoor fan motor
(1) Remove the cabinet. (Refer to 1) (2) Unconnect the connector remove the clamp of fan motor
lead wire. (3) Remove the propeller nut and remove the propeller. (4) Remove screws fixing the fan motor.
4. Removing the compressor
(1) Remove the cabinet. (Refer to 1) (2) Remove the soundproof felt. (3) Remove the terminal cover on the compressor (4) Remove the electrical assembly.
(Refer to 2) (5) Release gas from the refrigerant circuit. (6) Disconnect the welded part of the discharge pipe (7) Disconnect the welded part of the suction pipe. (8) Remove nuts fixing the compressor. (9) Remove the compressor.
Photo 5
Terminal cover
Compressor
Discharge pipe
Suction pipe
Compressor nuts
Photo 4
Fan motor cable
Connector
Propeller fan
Propeller fan nut
36
PARTS LIST10
SE-1.6
SE-2.5
1 1 1 1 1
2 2 1
1 2 2 1 1 1
1 1 1 1
1
2 2
1
1 2 2 1 1 1
1 1 1 1
1 2 2
1 1 2 2 1 1 1
SE-2
AR.TH AR.TH-T
No.
Parts No.
Parts name
Specification
Remarks
Unit
Amount
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Q'ty/set
Price
1 2 3 4
5
6 7
8
9 10 11 12 13 14
FRONT PANEL RIGHT SIDE PANEL LEFT SIDE PANEL BASE FAN MOTOR FAN MOTOR FAN MOTOR SIROCCO FAN RUBBER MOUNT INDOOR HEAT EXCHANGER INDOOR HEAT EXCHANGER INDOOR HEAT EXCHANGER DRAIN PAN RIGHT LEG LEFT LEG INDOOR COIL THERMISTOR ROOM TEMPERATURE THERMISTOR SEPARATOR ASSY
E07 039 000 E07 051 085 E07 039 086 E07 039 290 E07 051 300 E07 052 300 E07 053 300 E07 039 500 E02 179 505 E07 039 620 E07 040 620 E07 041 620 E07 039 700 E07 039 808 E07 039 809 E07 039 307 E07 039 308 E07 039 293
(Drawing No.)
RT12 RT11
MF MF MF
STRUCTURAL PARTS SE-1.6AR.TH SE-2AR.TH SE-2.5AR.TH SE-1.6AR.TH-T SE-2AR.TH-T SE-2.5AR.TH-T
12
8
9
1
6
7
11
3
4
2
5
13
INDOOR UNIT
14
Part number that are circled is not shown in the illustration.
37
ELECTRICAL PARTS SE-1.6AR.TH SE-2AR.TH SE-2.5AR.TH SE-1.6AR.TH-T SE-2AR.TH-T SE-2.5AR.TH-T
SE-1.6 SE-2 SE-2.5
AR.TH AR.TH-T
No.
Parts No.
Parts name
Specification
Remarks
(Drawing No.)
Unit
Amount
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Q'ty/set
Price
1 2 3 4 5 6 7 8 9
10
11 12
CABLE(FOR BOARD) REMOTE CONTROLLER CABLE COMPRESSOR CONTACTOR TERMINAL BLOCK TERMINAL BLOCK FUSE VARISTOR REMOTE CONTROLLER REMOTE CONTROLLER COVER ELECTRONIC CONTROL P.C. BOARD ELECTRONIC CONTROL P.C. BOARD ELECTRONIC CONTROL P.C. BOARD REMOTE CONTROLLER P.C. BOARD CONTROLLER COVER
1 1 1 1 1 1 1 1 1
1
1 1
E07 039 087 E07 027 089 E02 138 340 E02 367 377 E02 229 375 E02 127 382 E02 085 385 E07 027 426 E07 027 088 E07 051 450 E07 052 450 E07 053 450 E07 051 454 E07 039 449
52C
TB TB
F11
NR11
L,N, 3,2,N,
3.15A
1 1 1 1 1 1 1 1 1 1
1 1
1 1 1 1 1 1 1 1 1
1 1 1
8921 11 10
4
5
3
6
INDOOR UNIT
Part number that are circled is not shown in the illustration.
38
OUTDOOR UNIT STRUCTURAL PARTS SU-1.6NR.TH SU-2NR.TH SU-2.5NR.TH SU-1.6VR.TH SU-2VR.TH SU-2.5VR.TH SU-1.6VR.TH-T SU-2VR.TH-T SU-2.5VR.TH-T
2
89
32315 17 16 24 4 22
51918 1
10
No.
Parts No.
Parts name
Specification
Remarks
Unit
Amount
Wiring
Diagram
Symbol
Recom­mended
Q'ty
Q'ty/set
Price
CABINET BACK PANEL(OUT) BACK PANEL(OUT) SERVICE PANEL BASE BASE BASE FAN MOTOR FAN MOTOR FAN MOTOR FUSE HOLDER COMPRESSOR CONTACTOR COMPRESSOR CONTACTOR COMPRESSOR CONTACTOR COMPRESSOR CONTACTOR FAN MOTOR CAPACITOR COMPRESSOR CAPACITOR COMPRESSOR CAPACITOR COMPRESSOR CAPACITOR COMPRESSOR CAPACITOR TERMINAL BLOCK
E02 141 232 E02 140 233 E07 054 233
E02 141 245 E02 138 290 E02 140 290 E02 176 290 E02 141 301 E02 144 301 E02 147 301 E07 001 241 E07 057 340 E07 058 340 E07 042 340 E07 012 340 E02 138 351
E02 082 353 E02 079 353 E07 058 353 E02 089 353 E02 209 374
(Drawing No.)
52C 52C 52C 52C C2 C1 C1 C1 C1 TB
SU
-1.6SU-2SU-2.5SU-1.6SU-2SU-2.5
NR.TH VR.TH VR.TH-T
S-N11EX S-N18EX S-N11EX S-N18EX
3.0MF-440VAC 50MF-440VAC 30MF-440VAC 40MF-440VAC 35MF-440VAC
1
1 1
1
1
1 1
1
1
1
1 1
1
1
1 1
1
1 1
1
1 1
1 1
1
1
1
1
1
1
1 1
1 1
1
1
1 1 1
1
1 1
1
1
1 1
1 1 1
1
1
1 1
1
1
1
1
1
1 1
MF MF MF
1
2
3
4
5
6
7
8
9
10
39
Part number that are circled is not shown in the illustration.
No.
Parts No.
Parts name
Specification
Remarks
Unit
Amount
Wiring
Diagram
Symbol
Recom-
mended
Q'ty
Q'ty/set
Price
11 12 13 14 15
16
17
18
19
20 21
22
23
24
25
26
27
28
TERMINAL BLOCK FUSE(OUT) SURGE ABSORBER THERMAL REED SWITCH PROPELLER FAN COMPRESSOR RUBBER MOUNT COMPRESSOR RUBBER MOUNT MOTOR SUPPORT MOTOR SUPPORT MOTOR SUPPORT GRILLE(OUT) OUTDOOR HEAT EXCHANGER OUTDOOR HEAT EXCHANGER OUTDOOR HEAT EXCHANGER FAN MOTOR RELAY DIS PRESSURE REGULATOR STOP VALVE(GAS) STOP VALVE(GAS) STOP VALVE(LIQUID) STOP VALVE(LIQUID) COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR COMPRESSOR ACCUMULATOR STRAINER STRAINER STRAINER STRAINER CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE CAPILLARY TUBE THERMAL SWITCH
E07 056 374 E02 095 382 E07 042 384 E02 229 381 E02 141 501 E02 075 506 E02 138 506 E02 138 515 E02 139 515 E02 140 515
E02 141 521 E02 138 630 E02 141 630 E02 147 630 E02 288 343 E02 069 644 E02 140 661 E02 150 661 E02 139 662 E02 176 662 E02 271 900 E07 058 900 E02 177 900 E07 042 900 E07 043 900 E02 042 900 E07 058 932 E07 057 933 E07 059 933
E02 205 933 E02 236 933 E02 138 936 E02 271 936 E02 283 936 E02 147 937 E07 057 936 E02 140 936 E07 055 936 E07 057 305
(Drawing No.)
TB2 F CR 26F1
X1
MC MC
MC
MC MC MC
SU
-1.6SU-2SU-2.5SU-1.6SU-2SU-2.5
NR.TH VR.TH,VR.TH-T
3RUBBER 4RUBBER
RH-207NHDT NH-33NCDT NH-38NBDT RH-247VHAT NH-38VMDT NH-47VMDT
[3.0O[2.0OR700 [3.0O[1.8OR550 [3.0O[2.0OR600 [3.0O[2.0OR100 [3.0O[1.8OR100 [3.0O[1.8OR800 [3.0O[2.0OR570
2A
26C
1 1 1
1 3
1 1
1
1 1
1
1
1
1
1
1
1 1 1 1 1
4
1
1
1 1 1
1
1
1
1
1
1 1
1
1 1 1
1
4 1
1 1
1
1 1
1
1
1
1
1
1
1 1 1
1
4 1
1 1
1 1
1
1
1
1
1 1 1 1 1
4
1
1
1 1 1
1
1
1 1
1
1
1
1 1 1
1 3
1 1
1
1
1
1
1
1
HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO100-8310 TELEX J24532 CABLE MELCO TOKYO
CCopyright 1998 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Issued in Oct.1998. No. OC167 REVISED EDITION-A 1461 Issued in Aug.1998. No. OC167 396 Printed in Japan.
New publication, effective Oct. 1998. Specifications subject to change without notice.
OPTIONAL PARTS
11
1. REFRIGERANT PIPES
The air conditioner has flared connections its indoor and outdoor sides. Please use the optional extension pipe as follows.
3. AIR FILTER
Applied unit
SE-1.6AR.TH SE-1.6AR.TH-T
SE-2AR.TH SE-2AR.TH-T
SE-2.5AR.TH SE-2.5AR.TH-T
Models
PAC - 1000 FT
Applied unit
SE-1.6AR.TH
SE-1.6AR.TH-T
SE-2AR.TH SE-2AR.TH-T
Models Pipe length
Pipe size O.D.mm (in.)
Cross-section A-Gas
{12.7
(1/2)
{15.88
(5/8)
{6.35
(1/4)
{27
{31
{21
{27
0
120
0
120
B-liquid
Insulation
CD
3m 5m
7m 10m 15m
3m
5m
7m 10m 15m
MAC-680PI MAC-681PI MAC-682PI MAC-683PI MAC-684PI
MAC-670PI MAC-671PI MAC-672PI MAC-673PI MAC-674PI
Additional
refrigerant
charge
R-22(g)
SE-2.5AR.TH SE-2.5AR.TH-T
0
120
3m
5m
7m 10m 15m
MAC-860PI MAC-861PI MAC-862PI MAC-863PI MAC-864PI
{9.52
(3/8)
2. REMOTE CONTROLLER EXTENSION CABLE
When installing the remote controller at a distance from the air conditioner, use the designated extension cable with connector.
Part No.
Length
PAC-905EC
12m
PAC-906EC
20m
PAC-918EC
30m
PAC-919EC
50m
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