Mitsubishi Electric SUZ-KA09NA2 Manuale utente

SERVICE MANUAL

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

HFC

utilized

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

OCH699A

1COMBINATION OF INDOOR AND OUTDOOR UNITS

PART NAMES AND FUNCTIONS

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

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

-----

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

OCH699A

SUZ-KA09NA2.MX SUZ-KA12NA2.MX

5WIRING DIAGRAM

SYMBOL

C61,C62

DB61

F701,F801,F901

IC700,IC820,IC932

IC802

LED

LEV

,-----------7

1 1

H 1

__1§1__

r--~-=--=--=--=--=--=-.::.::.::.::.::.::.::r:----c~~=======~~~l_h

------------------0

/YYY"\_D

! ! I I I 2 2

@fil i ! I ! !

)

1_~!_<--0-_I?.~---,

LD70

'LD66A

I CN72irt--tf

CN722

"'"

~1n1 11

L-----~-----0-----;:;J

2 2

BK BK

26H

1 1

___

____.

INVERTER

P.C.

BOARD

LOU

LDV

LED

PTC64

LD71

PTC65

LOW

W N

3 3

IC700

CN642

CN61

119912

[~)

1 1

NAME

SYMBOL

NAME

SYMBOL

SMOOTHING

CAPACITOR

L61

REACTOR

RT68

DIODE

MODULE

COMPRESSOR

FUSE

(T3.

15AL250V)

FAN

MOTOR

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:

About the indoor side electric wiring,

refer to the indoor unit electric

wiring diagram for servicing.

Use copper supply wires.

3. Symbols indicate,

ITIIIJ

:Terminal block

1000001

·Connector

LD-E1

LD62

___________

_:__J

,.:::

a::i

(OPTION

PARTS)

@o---@

CIRCUIT

BREAKER

~-POWER

SUPPi

/ 1

2081230V

/~-AC60Hz

.~iV1JCjTO

:08/230V

INDOOR

---

UNIT

o----

□

OCH699A

SUZ-KA09NAH2.MX SUZ-KA12NAH2.MX

SYMBOL

C61,C62

DB61

F701,FBOl,F901

K;/OO,IC820,IC932

IC802

LED

LEV

L61

LD?O

LD66A

fil!..

r'I

- ·

X64

LDU

- U

Pt------1

Ir I

INVERTER

P.C.

BOARD

'r'i"--~-+--..U

LDV

- V

1-_!l_j

'f"

LOOI

3 3

LDW-

~1-----

LED

"'"Y;;..E

,._--c=-....l

CN6I

IC700

CN642

LD71

PTC65

tLD62

NAME

SYMBOL

SMOOTHING

CAPACITOR

L61

DIODE MODULE

FUSE

(T3.

15AL250V)

DEFROST

HEATER

PTC64,

PTC65

POWER

MODULE

RT61

POWER

DEVICE

RT62

LED

RT64

EXPANSION

VALVE

COIL

RT65

1fQQl

RT64

[~)

1 1

NAME SYMBOL

REACTOR

RT68

COMPRESSOR

FAN

MOTOR

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

LEV

NOTES:

About the indoor side electric wiring,

refer to the indoor unit electric

wiring diagram for servicing.

Use copper supply wires.

Symbols indicate,

ITIIIJ

:Terminal block

1000001

:Connector

26H

o----@

CIRCUIT

BREAKER

,~-POWERSUPPLY

1 I

208/230V

~-Ac

60Hz

.~iV1)CJTO

108/230V

INDOOR

---

UNIT

o----

OCH699A

SUZ-KA15NA2.MX

SYMBOL

C61,C62,C63

DB61

F701,F801,F001

IC700,IC820,IC932

IC802

LED

LEV

,-----------7

1 1

H 1

r--;-=--=--=--=--=--=--=--=-.::.::.::.::.::f

~----r~~lliR====~

I I I I

YE!

1 1

____________

........,

___

--,

I I I I

•-Fl5)------0-------,

LD66A

l-----~-----o-----1i"J

LD63

2 2

26H

LOU-

u p p wu

LDV

V u

N 1

LOW

3 3

-·

·-.

IC932

CN932

CN61

IC700

NAME SYMBOL NAME SYMBOL

SMOOTHING

CAPACITOR

L61

REACTOR

RT68

DIODE MODULE

COMPRESSOR

FUSE

(T3.

15AL250V)

FAN

MOTOR

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-~

INVERTER P.C. BOARD

LD61

LD-E1

LED

NAME

OUTDOOR

HEAT

EXCHANGER

TEMP.

THERMISTOR

TERMINAL BLOCK

TRANSFORMER

RELAY

REVERSING

VALVE

COIL

HEATER

PROTECTORIOPTION

PARTS)

LD71

PTC65

LEV

NOTES:

About

the indoor side electric wiring,

refer to the indoor unit electric

wiring

diagram

for servicing.

Use

copper

supply

wires.

tLD62

Symbols indicate,

ITIIIJ

:Terminal

block

1000001

·Connector

___________

(OPTION

PARTS)

o----@

CIRCUIT

BREAKER

~-POWER

SUPPLY

/ 1

208/230V

/~-AC60Hz

---1

-~~V_DC

:08/230V

INDOOR

---

UNIT

o----

OCH699A

SUZ-KA15NAH2.MX

SYMBOL

C61,C62,C63

OB61

F701,F801,F90I

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

SYMBOL

L61

PTC64,

PTC65

RT61

RT62

RT64

RT65

LD66A

CN642

119912

[~1

~1-

NAME SYMBOL

REACTOR

RT68

COMPRESSOR

FAN

MOTOR

CIRCUIT

PROTECTION

T801

DEFROST

THERMISTOR

X63, X64,

X66

DISCHARGE

TEMP.

THERMISTOR

21S4

FIN

TEMP.

THERMISTOR

26H

AMBIENTTEMP.

THERMISTOR

L61

r'1

INVERTER

P.C.

BOARD

LD61

PTC64

NAME

OUTDOOR

HEAT

EXCHANGER

TEMP.

THERMISTOR

TERMINAL BLOCK

TRANSFORMER

RELAY

REVERSING

VALVE

COIL

HEATER

PROTECTOR

LED

LD71

PTC65

LEV

NOTES:

About

the indoor side electric wiring,

refer to the indoor unit electric

wiring diagram for servicing.

Use

copper

supply

wires.

Symbols indicate,

ITIIIJ

:Terminal

block

1000001

:Connector

LD-E1

LD62

"='.

a:,

26H

o----@

CIRCUIT

BREAKER

~-POWER

SUPPL

/ 1

2081230V

r•~~-

60Hz

,~iVYCJTO

:08/230V

INDOOR

---

UNIT

o-----

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

Max. Height

difference

Indoor

unit

Outdoor unit

MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE

Model

Refrigerant piping: ft Piping size O.D: in

Max. Length

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)

□~-----

,..........,...

',.1....----..J

◄•

---

=~31

-----+

----➔

I I I

I l

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

□'--------------

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