Mitsubishi Electric Mr.SLIM SUZ-KA09NA User manual

SERVICE MANUAL
No.OCH467
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
CONTENTS
1. COMBINATION OF INDOOR AND OUTDOOR UNITS
.......
2
2. PART NAMES AND FUNCTIONS...................... 2
3. SPECIFICATION................................................. 3
4. OUTLINES AND DIMENSIONS.......................... 4
5. WIRING DIAGRAM............................................5
6. REFRIGERANT SYSTEM DIAGRAM................8
7. DATA.................................................................11
8. ACTUATOR CONTROL....................................12
9. SERVICE FUNCTION.......................................13
10. TROUBLESHOOTING......................................13
11. FUNCTION SETTING....................................... 29
12. DISASSEMBLY INSTRUCTIONS.....................32
HFC
utilized
R410A
January 2010
R410A
Outdoor unit
[Model names] [Service Ref.]
SUZ-KA09NA SUZ-KA09NA.TH
SUZ-KA12NA SUZ-KA12NA.TH
SUZ-KA15NA SUZ-KA15NA.TH
SUZ-KA18NA SUZ-KA18NA.TH
NOTE:
This service manual describes service data of
the outdoor units.
• RoHS compliant products have <G> mark on
the spec name plate.
PARTS CATALOG (OCB467)
SUZ-KA18NA.TH

2
Air outlet
Drain outlet
Piping
Drain hose
Air inlet
(back and side)
1COMBINATION OF INDOOR AND OUTDOOR UNITS
OUTDOOR UNIT
Piping
Air outlet
Drain hose
Drain outlet
Air inlet
(back and side)
SUZ-KA18NA
PART NAMES AND FUNCTIONS
2
SUZ-KA09NA SUZ-KA12NA SUZ-KA15NA
Heat pump type
Outdoor unit
SUZ-
SEZ-KD15NA.TH
SEZ-KD18NA.TH
—
—
—
—
—
—
Indoor unit
Service
Manual No.
Service Ref.
Heat pump
without electric heater
KA18NA.THKA15NA.TH
HWE08020
KA12NA.THKA09NA.TH
—
—
—
—
—
—
SEZ-KD09NA.TH
SEZ-KD12NA.TH
OUTDOOR UNIT

3
Outdoor unit model SUZ-KA09NA SUZ-KA12NA SUZ-KA15NA SUZ-KA15NA
Power supply V , phase , Hz 208/230 , 1 , 60
Max. fuse size (time delay) A 15
Min. circuit ampacity A 12 12 12 14
Fan motor F.L.A 0.50 0.93
Compressor
Model KNB073FQDHC KNB092FQAHC SNB130FQBH
R.L.A 6.6 6.6 7.4 10.0
L.R.A 8.2 8.2 9.3 12.5
Refrigeration oil oz. (Model) 10.8 (NEO22) 15.2 (NEO22)
Refrigerant control Linear expansion valve
Sound level 1Cooling dB(A) 46 49 49 54
Heating dB(A) 50 51 51 56
Defrost method Reverse cycle
Dimensions
W in. 31-1/2 33-1/16
D in. 11-1/4 13
H in. 21-5/8 33-7/16
Weight Ib. 66 77 80 119
External finish Munsell 3Y 7.8/1.1
Control voltage
(by built-in transformer) VDC 12 - 24
Refrigerant piping Not supplied
Refrigerant pipe size
(Min. wall thickness)
Liquid in. 1/4 (0.0315)
Gas in. 3/8 (0.0315) 1/2 (0.0315)
Connection method Indoor Flared
Outdoor Flared
Between the indoor &
outdoor units
Height difference ft. 40 50
Piping length ft. 65 100
Refrigerant charge (R410A) 1 lb. 16 oz. 2 lb. 9 oz. 3 lb. 16 oz.
NOTE: Test conditions are based on AHRI 210/240.
1: Rating conditions (Cooling) — Indoor: 80˚FDB, 67˚FWB, Outdoor: 95˚FDB, (75˚FWB)
(Heating) — Indoor: 70˚FDB, 60˚FWB, Outdoor: 47˚FDB, 43˚FWB
3SPECIFICATION
OPERATING RANGE
(1) POWER SUPPLY
Rated voltage Guaranteed voltage (V)
Outdoor unit
208/230 V
1 phase
60 Hz
Min. 187 208 230 Max. 253

4
Unit: inch
SUZ-KA09NA SUZ-KA12NA SUZ-KA15NA
Liquid pipe :1/4 (flared)
Gas pipe :3/8 (flared) (KA09/12)
1/2 (flared) (KA15)
6-23/32
2
5-7/8
2-23/32
1-3/4
15-3/4
12 ~ 12-3/4
13-9/16
11/16
1-9/16
7/8
21-5/8
11-1/32
13/32
31-1/2
19-11/16
5-15/16
11-29/32
17/3229/32 11-1/4
Air in
handle
Air in
Air out
2- 3/8 13/16 Oval hole
Drain hole 1-5/8
REQUIRED SPACE Basically open 4 inch or more
without any obstruction in front
and on both sides of the unit.
14 in. or more
8 in. or more
4 in. or more
4 in. or more
Open two sides of left,
right, or rear side.
SUZ-KA18NA
20-9/32
14-3/16
Air in
11-25/32
2-19/32
Air in
Air out
19-11/16
33-1/16
13
2
4-25/32
33-7/16
16-15/16
3-3/16
4-3/8
× 13/16 slot
1-11/32
1-9/16
Drain 3 holes
(ø1
-5/16)
30°
35°
2-9/16
Liquid:1/4(flared)
Gas :1/2(flared)
3-9/16
8-11/32
Open as a rule
20 inch or more if
the front and both
sides are open
4 inch or more/
8 inch or more if
there are obstacles
to both sides
Open as a rule
20 inch or more if the back,
both sides and top are open
REQUIRED SPACE
14 in. or more
4 in. or more
4OUTLINES AND DIMENSIONS

5
SUZ-KA09NA SUZ-KA12NA
5WIRING DIAGRAM
LEDLED
H
26H
IC802
IPM,IC932
L61
DB61,DB65
C62,C63
SYMBOL NAME SYMBOL SYMBOLNAME NAME
T801 21S4
X63,X64,X66
TB1,TB2
TR821
LEV
RT65 RT64
PTC64,PTC65
MC
RT62 RT61
MF
F701,F801,F901
RT68
(For field wiring).
NOTES:
1.About the indoor side electric
for servicing. unit electric wiring diagram
wiring refer to the indoor
2.Use copper conductors only.
LED
2
RED 26H
BLKBLK
2
IC932
3
L1
L2
1
CN931
5
5
GROUND
From INDOOR UNIT CONNECTING WIRE
POWER SUPPLY 208/230V 1 phase 60Hz
TO INDOOR UNIT CONNECTING WIRES 208/230V 1 phase 60Hz
From INDOOR UNIT CONNECTING WIRES DC12-24V
LD63
F701
X64
PTC64
BLK
LD-E1
PTC65
LD-S
LD62
LD61
6
INVERTER P.C. BOARD
3
F901
BLU
CN721
X63
21
1
RT65
CN643
RT62
RT61
CN641
4
1
CIRCUIT BREAKER
BRN
BLU
BRN
RED
12
S3
S2
S1
TB2 TB1
RT64 RT68
CN642 CN644
2
1
CN932
L61
C62C63
LD70 LD66
DB61
DB65
+
++
–
–
~ ~~~
+
TR821
F801
T801
1
3
P N
W
U V
IC802
3
1
V
W
MS 3~
MS
MF
3~ M
LEV
MC
IPM
U
WHT
RED
BLK
3
1
RED
WHT
BLK
BLU YLW
ORN
LDW
LDV
LDU
CN61
6
CN724
1
21S4
11
22 1
(OPTION PARTS)
YLW
BLK BLK
BLK BLK
1
H
BLK
CN722
3
1
X66
4
t° t° t° t° t°
SMOOTHING CAPACITOR DIODE MODULE FUSE (T3.15AL250V) DEFROST HEATER(OPTION PARTS) INTELLIGENT POWER DEVICE INTELLIGENT POWER MODULE REACTOR
EXPANSION VALVE COIL COMPRESSOR FAN MOTOR CIRCUIT PROTECTION DEFROST THERMISTOR DISCHARGE TEMP.THERMISTOR FIN TEMP.THERMISTOR AMBIENT TEMP.THERMISTOR
OUTDOOR HEAT EXCHANGER TEMP. THERMISTOR. TERMINAL BLOCK SWITCHING POWER TRANSISTOR TRANSFORMER RELAY REVERSING VALVE COIL HEATER PROTECTOR(OPTION PARTS)