Mitsubishi Electric SUZ-KA09NAH2.MX User manual

SERVICE MANUAL
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................ 9
7. DATA................................................................. 10
8. ACTUATOR CONTROL....................................12
9. SERVICE FUNCTION.......................................13
10. TROUBLESHOOTING......................................13
11. FUNCTION SETTING....................................... 29
12. DISASSEMBLY INSTRUCTIONS.....................32
HFC
utilized
R410A
R410A
Note:
This service manual describes
service data of the outdoor units
only.
PARTS CATALOG (OCB699)
No. OCH699
December 2018
Outdoor unit
[Model Name]
SUZ-KA09NA2
SUZ-KA09NAH2
SUZ-KA12NA2
SUZ-KA12NAH2
SUZ-KA15NA2
SUZ-KA15NAH2
[Service Ref.]
SUZ-KA09NA2.MX
SUZ-KA09NAH2.MX
SUZ-KA12NA2.MX
SUZ-KA12NAH2.MX
SUZ-KA15NA2.MX
SUZ-KA15NAH2.MX
SUZ-KA09NA(H)2.MX
Air outlet
Drain outlet
Piping
Drain hose
Air inlet
(back and side)

2
OCH699
1COMBINATION OF INDOOR AND OUTDOOR UNITS
PART NAMES AND FUNCTIONS
2
Heat pump type
Outdoor unit
SUZ-
—
—
Indoor unit
Service
Manual No.
Service Ref.
Heat pump without
electric heater
KA15
NA(H)2.MX
HWE08020
KA12
NA(H)2.MX
KA09
NA(H)2.MX
—
SLZ-KF09/12/15NA.TH
SEZ-KD09/12/15NA4R1.TH
PEAD-A09/12/15AA7.MX
SVZ-KP12NA.MX
MLZ-KP09/12NA-U1
OCH699
HWE1608A
OBH802
Air outlet
Drain outlet
Piping
Drain hose
Air inlet
(back and side)
SUZ-KA09NA(H)2.MXSUZ-KA12NA(H)2.MXSUZ-KA15NA(H)2.MX

3
OCH699
Outdoor unit model SUZ-KA09NA(H)2 SUZ-KA12NA(H)2 SUZ-KA15NA(H)2
Power supply V , phase , Hz 208/230 , 1 , 60
Max. fuse size (time delay) A 15
Min. circuit ampacity A 9 9 10
Fan motor F.L.A 0.50
Compressor
Model KNB073FRVMC SNB092FQAMT SNB130FQBMT
R.L.A 6.2 6.6 7.4
L.R.A 7.7 8.2 9.3
Refrigeration oil oz(L)/
(Model) 9.1(0.27)/(FV50S) 11.8(0.35)/(FV50S) 11.8(0.35)/(FV50S)
Refrigerant control Linear expansion valve
Sound level*1Cooling dB(A) 48 49 49
Heating dB(A) 50 51 51
Defrost method Reverse cycle
Dimensions W in 31-1/2 D in 11-1/4
H in 21-5/8
Weight Ib 81
([WHUQDO¿QLVK 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
Piping length ft 65
Refrigerant charge (R410A) 2 lb 5 oz 2 lb 9 oz
Note: Test conditions are based on AHRI 210/240.
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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

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OCH699
4OUTLINES AND DIMENSIONS
clear *1
*1 4 in. (100 mm) or more when
front and sides of the unit are clear
*2 When any 2 sides of left, right
and rear of the unit are clear
holes
(KA09/12/15NA)
(KA09/12/15NAH)
REQUIRED SPACE
Liquid refrigerant pipe joint
Refrigerant pipe (flared) Ø 1/4
Gas refrigerant pipe joint
Refrigerant pipe (flared) Ø 3/8 (KA09/12)
Ø 1/2 (KA15)
4 in. (100 mm)
or more
14 in. (350 mm)
or more
8 in. (200 mm)
or more *2
4 in. (100 mm)
or more
Unit: inch(mm)
SUZ-KA09NA(H)2.MX SUZ-KA12NA(H)2.MX SUZ-KA15NA(H)2.MX

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OCH699
SUZ-KA09NA2.MX SUZ-KA12NA2.MX
5WIRING DIAGRAM

6
OCH699
SUZ-KA09NAH2.MX SUZ-KA12NAH2.MX

7
OCH699
SUZ-KA15NA2.MX

8
OCH699
SUZ-KA15NAH2.MX

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OCH699
6REFRIGERANT SYSTEM DIAGRAM
Unit: Inch (mm)
Outdoor
heat
exchanger
Flared connection
Defrost
thermistor
RT61
Discharge
temperature
thermistor
RT62
Flared connection
Stop valve
(with strainer) Refrigerant flow in cooling
Compressor
4-way valve
Refrigerant flow in heating
Refrigerant pipe ø1/4 (ø6.35)
(with heat insulator)
R.V. coil
heating ON
cooling OFF
Strainer
#100
LEV
Ambient
temperature
thermistor
RT65
Muffler
Capillary tube
O.D. 0.118 ×
I.D. 0.079 × 9-7/16
(ø3.0 × ø2.0 × 240)
(KA09)
Outdoor heat
exchanger
temperature
thermistor
RT68
Capillary tube
O.D. 0.118 ×
I.D. 0.079 × 8-9/32
(ø3.0 × ø2.0 × 210)
Service
port
Service
port
Refrigerant pipe ø3/8 (ø9.52) (KA09/12)
(with heat insulator)
ø1/2 (ø12.7) (KA15)
Stop valve
(with service port)
Capillary tube
O.D. 0.157 ×
I.D. 0.094 × 9-7/16
(ø4.0 × ø2.4 × 240)
(KA12/15
)
Muffler
SUZ-KA09NA(H)2.MX SUZ-KA12NA(H)2.MX SUZ-KA15NA(H)2.MX
Max. Length
A
Max. Height
difference
B
Indoor
unit
Outdoor unit
MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE
Model Refrigerant piping: ft Piping size O.D: in
Max. Length
A Max. Height difference BGas Liquid
SUZ-KA
09/12/15NA(H)2 65 40 3/8 (KA09/12)
1/2 (KA15) 1/4
ADDITIONAL REFRIGERANT CHARGE (R410A: oz)
Refrigerant piping exceeding 25 ft requires additional refrigerant charge according to the calculation.
Model Outdoor unit
precharged Refrigerant piping length (one way): ft
25 30 40 50 60 65
SUZ-KA09NA(H)2 2 lb 5 oz 0 1.08 2.16 3.24 4.32 5.4SUZ-KA12NA(H)2 2 lb 9 oz
SUZ-KA15NA(H)2
Calculation: X oz = 1.08/5 oz / ft × (Refrigerant piping length (ft) - 25)

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OCH699
7DATA
STANDARD OPERATION DATA
Representative matching SEZ-KD09NA4 SEZ-KD12NA4 SEZ-KD15NA4
Item Unit Cooling Heating Cooling Heating Cooling Heating
Total
Capacity BTU/h 9000 12000 12000 15000 15000 18000
SHF - 0.82 — 0.82 — 0.86 —
Input kW 0.7 1.1 0.93 1.33 1.15 1.44
Electrical circuit
Indoor unit SEZ-KD09NA4 SEZ-KD12NA4 SEZ-KD15NA4
Power supply (V, phase, Hz) 230, 1, 60
Input kW 0.06 0.04 0.07 0.05 0.09 0.07
Current A 0.5 0.39 0.57 0.46 0.74 0.63
Outdoor unit SUZ-KA09NA(H)2 SUZ-KA12NA(H)2 SUZ-KA15NA(H)2
Power supply (V, phase, Hz) 230, 1, 60
Input kW 0.64 1.06 0.86 1.28 1.06 1.37
Current A 2.89 4.64 3.47 5.29 4.24 5.63
Refrigerant circuit
Condensing pressure PSIG 358 473 387 441 415 386
Suction pressure
PSIG 133 110 147 99 141 99
Discharge temperature °F 160 169 167 168 166 167
Condensing temperature °F 109 114 114 124 119 114
Suction temperature °F 63 36 66 31 55 31
Ref. pipe length ft 25
Refrigerant charge (R410A) - 1.05 1.15 1.15
Indoor
unit
Intake air temperature DB °F 80 70 80 70 80 70
WB °F 67 60 67 60 67 60
Discharge air temperature DB °F 59 104 57 105 57 101
Outdoor
unit
Intake air temperature DB °F 95 47 95 47 95 47
WB °F 75 43 75 43 75 43
Representative matching SLZ-KF09NA SLZ-KF12NA SLZ-KF15NA
Item Unit Cooling Heating Cooling Heating Cooling Heating
Total
Capacity BTU/h 9000 11000 12000 13000 14100 18000
SHF - 0.87 — 0.74 — 0.75 —
Input kW 0.67 0.81 0.9 1.31 1.15 1.73
Electrical circuit
Indoor unit SLZ-KF09NA SLZ-KF12NA SLZ-KF15NA
Power supply (V, phase, Hz) 230, 1, 60
Input kW 0.02 0.02 0.02 0.02 0.03 0.03
Current A 0.2 0.15 0.24 0.19 0.32 0.27
Outdoor unit SUZ-KA09NA(H)2 SUZ-KA12NA(H)2 SUZ-KA15NA(H)2
Power supply (V, phase, Hz) 230, 1, 60
Input kW 0.65 0.79 0.88 1.29 1.12 1.7
Current A 2.67 3.34 3.67 5.48 4.82 7.38
Refrigerant circuit
Condensing pressure PSIG 358 393 391 483 397 490
Suction pressure
PSIG 131 113 142 104 127 101
Discharge temperature °F 159 167 167 159 168 191
Condensing temperature °F 108 115 115 131 116 131
Suction temperature °F 56 40 62 33 54 32
Ref. pipe length ft 25
Refrigerant charge (R410A) - 1.05 1.15 1.15
Indoor
unit
Intake air temperature DB °F 80 70 80 70 80 70
WB °F 67 60 67 60 67 60
Discharge air temperature DB °F 57 103 56 105 57 112
Outdoor
unit
Intake air temperature DB °F 95 47 95 47 95 47
WB °F 75 43 75 43 75 43