Mitsubishi Electric SUZ-KA09NA2 User manual

SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
HFC
utilized
R410A
R410A
Note:
This service manual describes
service data of the outdoor units
only.
PARTS CATALOG (OCB699)
No. OCH699
REVISED EDITION-A
June 2021
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)
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
Revision:
Some descriptions have
been modified in REVISED
EDITION-A.
OCH699 is void.
MITSUBISHI
ELECTRIC

2
OCH699A
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
□'-----------------'
\ 0 0 0
0 0 0
0 0 0
0
0 0

3
OCH699A
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
External nish 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 di󰀨erence 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.
Rating conditions (Cooling) — Indoor: 80˚F D.B., 67˚F W.B., Outdoor: 95˚F D.B., (75˚F W.B.)
(Heating) — Indoor: 70˚F D.B., 60˚F W.B., Outdoor: 47˚F D.B., 43˚F W.B.
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
□'--------------
--------1 -----1 -----

4
OCH699A
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
□
2-3/4

5
OCH699A
SUZ-KA09NA2.MX SUZ-KA12NA2.MX
5WIRING DIAGRAM
SYMBOL
C61,C62
DB61
F701,F801,F901
H
IC700,IC820,IC932
IC802
LED
LEV
,-----------7
1 BK 1 1 BK H 1
OG __1§1__ BN r--~-=--=--=--=--=--=-.::.::.::.::.::.::.::r:----c~~=======~~~l_h I
------------------0 /YYY"\_D ! ! I I I 2 2 BK I
r WH @fil i ! I ! ! YE l~ ) 1_~!_<--0-_I?.~---, !
* LD70 'LD66A I CN72irt--tf CN722 3~ 1 "'" ~1n1 11 L-----~-----0-----;:;J I
1
RD 2 2 BK BK 26H
1
r7
1 1
BK ___ ____. I ~w
3
INVERTER P.C. BOARD Lo
61
WH LOU fl
RD LDV N LED
YE
PTC64
LD71 PTC65
LOW W N
3 3 IC700 CN642
CN61 119912
[~)
3
1 1
MF
NAME SYMBOL NAME SYMBOL
SMOOTHING CAPACITOR L61 REACTOR
RT68
DIODE MODULE MC COMPRESSOR
FUSE (T3. 15AL250V) MF FAN MOTOR TB
DEFROST HEATER(OPTION PARTS PTC64, PTC65 CIRCUIT PROTECTION T801
POWER MODULE RT61 DEFROST THERMISTOR X63, X64, X66
POWER DEVICE RT62 DISCHARGE TEMP. THERMISTOR 2184
LED RT64 FIN TEMP. THERMISTOR 26H
EXPANSION VALVE COIL RT65 AMBIENT TEMP. THERMISTOR
NAME
OUTDOOR HEAT EXCHANGER
TEMP. THERMISTOR
TERMINAL BLOCK
TRANSFORMER
RELAY
REVERSING VALVE COIL
HEATER PROTECTOR(OPTION PARTS
LEV
NOTES:
RD
1. About the indoor side electric wiring,
refer to the indoor unit electric
wiring diagram for servicing.
2. Use copper supply wires.
3. Symbols indicate, ITIIIJ :Terminal block
1000001 ·Connector
LD-E1
LD62
BU
BN
L ___________ _:__J
,.:::
a::i
BK
(OPTION PARTS)
@o---@
CIRCUIT
TB BREAKER
, ~-POWER SUPPi
/ 1 2081230V
/~-AC60Hz
.~iV1JCjTO
:08/230V AC INDOOR
--- UNIT
o----
@
□

6
OCH699A
SUZ-KA09NAH2.MX SUZ-KA12NAH2.MX
SYMBOL
C61,C62
DB61
F701,FBOl,F901
H
K;/OO,IC820,IC932
IC802
LED
LEV
OG
L61
LD?O LD66A
fil!..
WH
BK
YE
RD
r'I - · X64
WH LDU - U Pt------1 Ir I ~, INVERTER P.C. BOARD 'r'i"--~-+--..U BK
RD LDV - V 1-_!l_j 'f" LOOI
3 3 LDW- ~1----- 1 LED "'"Y;;..E ,._--c=-....l
CN6I IC700 CN642 LD71 PTC65 tLD62
NAME SYMBOL
SMOOTHING CAPACITOR L61
DIODE MODULE MC
FUSE (T3. 15AL250V)
MF
DEFROST HEATER PTC64, PTC65
POWER MODULE RT61
POWER DEVICE RT62
LED RT64
EXPANSION VALVE COIL RT65
1fQQl 2
I'
RT64
[~)
3
1 1
MF
NAME SYMBOL
REACTOR
RT68
COMPRESSOR
FAN MOTOR TB
CIRCUIT PROTECTION T801
DEFROST THERMISTOR X63, X64, X66
DISCHARGE TEMP. THERMISTOR 21S4
FIN TEMP. THERMISTOR 26H
AMBIENT TEMP. THERMISTOR
NAME
OUTDOOR HEAT EXCHANGER
TEMP. THERMISTOR
TERMINAL BLOCK
TRANSFORMER
RELAY
REVERSING VALVE COIL
HEATER PROTECTOR
RD
LEV
NOTES:
1. About the indoor side electric wiring,
refer to the indoor unit electric
wiring diagram for servicing.
2. Use copper supply wires.
BU
BN
3. Symbols indicate, ITIIIJ :Terminal block
1000001 :Connector
26H
@
o----@
CIRCUIT
BREAKER
TB ,~-POWERSUPPLY
1 I
208/230V
/ ~-Ac 60Hz
.~iV1)CJTO
108/230V AC INDOOR
--- UNIT
o----
@

7
OCH699A
SUZ-KA15NA2.MX
SYMBOL
C61,C62,C63
DB61
F701,F801,F001
H
IC700,IC820,IC932
IC802
LED
LEV
,-----------7
1 BK 1 1 BK H 1
OG L
51
BN r--;-=--=--=--=--=--=--=--=-.::.::.::.::.::f ~----r~~lliR====~ !
WH I I I I YE! 1 1 BK BK I ____________ ........, ___ --, I I I I •-Fl5)------0-------, I
LD66A I l-----~-----o-----1i"J I
LD63 I RD 2 2 BK BK 26H I
LOU-
u p p wu
WH
LDV
V u
RD
N 1
LOW
3 3
-· ·-. -
IC932 CN932
CN61
IC700
[~
MF
NAME SYMBOL NAME SYMBOL
SMOOTHING CAPACITOR L61 REACTOR
RT68
DIODE MODULE MC COMPRESSOR
FUSE (T3. 15AL250V)
MF FAN MOTOR TB
DEFROST HEATER(OPTION PARTS) PTC64, PTC65 CIRCUIT PROTECTION T801
POWER MODULE RT61 DEFROST THERMISTOR X63, X64, X66
POWER DEVICE RT62 DISCHARGE TEMP. THERMISTOR 21S4
LED RT64 FIN TEMP. THERMISTOR 26H
EXPANSION VALVE COIL RT65 AMBIENT TEMP. THERMISTOR
IC802
r-"7-~
__ 1
INVERTER P.C. BOARD
LD61
LD-E1
fl
LED
NAME
OUTDOOR HEAT EXCHANGER
TEMP. THERMISTOR
TERMINAL BLOCK
TRANSFORMER
RELAY
REVERSING VALVE COIL
HEATER PROTECTORIOPTION PARTS)
YE
LD71 PTC65
LEV
NOTES:
RD
1. About the indoor side electric wiring,
refer to the indoor unit electric
wiring
diagram for servicing.
2. Use copper supply wires.
tLD62
BU
BN
3. Symbols indicate, ITIIIJ :Terminal block
1000001 ·Connector
L ___________ ~
BK
(OPTION PARTS)
@
o----@
CIRCUIT
BREAKER
TB , ~-POWER SUPPLY
/ 1 208/230V
/~-AC60Hz
---1
-~~V_DC TO
:08/230V AC INDOOR
--- UNIT
o----
@

8
OCH699A
SUZ-KA15NAH2.MX
SYMBOL
C61,C62,C63
OB61
F701,F801,F90I
H
K:700,IC820,IC932
IC802
LED
LEV
NAME
SMOOTHING CAPACITOR
DIODE MODULE
FUSE(T3. 15AL250V)
DEFROST HEATER
POWER MODULE
POWER DEVICE
LED
EXPANSION VALVE COIL
LD70
u p
V
SYMBOL
L61
MC
MF
PTC64, PTC65
RT61
RT62
RT64
RT65
LD66A
CN642
119912
OG
[~1
3
~1-
MF
NAME SYMBOL
REACTOR
RT68
COMPRESSOR
FAN MOTOR TB
CIRCUIT PROTECTION T801
DEFROST THERMISTOR X63, X64, X66
DISCHARGE TEMP. THERMISTOR 21S4
FIN TEMP. THERMISTOR 26H
AMBIENTTEMP. THERMISTOR
L61
BN
WH
r'1
INVERTER P.C. BOARD LD61
f'
YE
PTC64
NAME
OUTDOOR HEAT EXCHANGER
TEMP. THERMISTOR
TERMINAL BLOCK
TRANSFORMER
RELAY
REVERSING VALVE COIL
HEATER PROTECTOR
LED
LD71 PTC65
LEV
NOTES:
RD
1. About the indoor side electric wiring,
refer to the indoor unit electric
wiring diagram for servicing.
2. Use copper supply wires.
3. Symbols indicate, ITIIIJ :Terminal block
1000001 :Connector
LD-E1
LD62
BU
BN
"='.
a:,
BK
YE
RD
BK
26H
@
o----@
CIRCUIT
TB BREAKER
, ~-POWER SUPPL
/ 1 2081230V
r•~~- AC 60Hz
,~iVYCJTO
:08/230V AC INDOOR
--- UNIT
o-----
@

9
OCH699A
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 di󰀨erence
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)
□~-----
tt ~ ~
I ,..........,... ',.1....----..J ◄• ---
y
II
\
=~31
-----+
----➔
I I I
I l
I

10
OCH699A
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
□'--------------