Midea DLCERAA12AAJ, DLCERAA24AAK, DLCERAA12AAK, DLCERAA18AAK, DLCERAH09AAK Service Manual

DLCERA

SERVICE MANUAL

Outdoor Unit Single Zone Ductless System − Sizes 09 to 24

TABLE OF CONTENTS

PAGE

SAFETY CONSIDERATIONS 1.............................

INTRODUCTION 1.......................................

MODEL/SERIAL NUMBER NOMENCLATURES 2.............

SPECIFICATIONS 3.......................................

DIMENSIONS 5.........................................

CLEARANCES 8.........................................

ELECTRICAL DATA 9....................................

WIRING 9...............................................

CONNECTION DIAGRAMS 10.............................

WIRING DIAGRAM 10....................................

REFRIGERATION CYCLE DIAGRAMS 14....................

REFRIGERANT LINES 15.................................

SYSTEM EVACUATION AND CHARGING 16.................

ELECTRONIC FUNCTIONS 17.............................

TROUBLESHOOTING 21..................................

OUTDOOR UNIT DIAGNOSTIC GUIDES 22..................

PCB DIAGRAMS 23......................................

DIAGNOSIS AND SOLUTION 25...........................

DISASSEMBLY INSTRUCTIONS 46.........................

APPENDIX 69...........................................

SAFETY CONSIDERATIONS

Installing, starting up, and servicing air−conditioning equipment can be
hazardous due to system pressures, electrical components, and
equipment location (roofs, elevated structures, etc.).

Only trained, qualified installers and service mechanics should install,
start−up, and service this equipment.

Untrained personnel can perform basic maintenance functions such as
cleaning coils. All other operations should be performed by trained
service personnel.

When working on the equipment, observe precautions in the literature
and on tags, stickers, and labels attached to the equipment.

Follow all safety codes. Wear safety glasses and work gloves. Keep
quenching cloth and fire extinguisher nearby when brazing. Use care in
handling, rigging, and setting bulky equipment.

Read this manual thoroughly and follow all warnings or cautions included
in literature and attached to the unit. Consult local building codes and
National Electrical Code (NEC) for special requirements. Recognize safety

!

!

information. This is the safety−alert symbol
on the unit and in instructions or manuals, be alert to the potential for
personal injury. Understand these signal words: DANGER, W ARNI NG,
and CAUTION.

. When you see this symbol

These words are used with the safety−alert symbol. DANGER
identifies the most serious hazards which will result in severe personal
injury or death. WARNING signifies hazards which could result in
personal injury or death. CAUTION is used to identify unsafe practices
which may result in minor personal injury or product and property
damage. NOTE is used to highlight suggestions which will result in
enhanced installation, reliability, or operation.

!

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal
injury or death.

Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF
position. There may be more than 1 disconnect switch.
Lock out and tag switch with a suitable warning label.

!

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment
damage or improper operation.

Do not bury more than 36 in. (914 mm) of refrigerant pipe
in the ground. If any section of pipe is buried, there must be
a 6 in. (152 mm) vertical rise to the valve connections on
the outdoor units. If more than the recommended length is
buried, refrigerant may migrate to the cooler buried section
during extended periods of system shutdown. This causes
refrigerant slugging and could possibly damage the
compressor at start−up.

WARNING

!

WARNING

EXPLOSION HAZARD

Failure to follow this warning could
result in death, serious personal injury,
and/or property damage.

Never use air or gases containing
oxygen for leak testing or operating
refrigerant compressors. Pressurized
mixtures of air or gases containing
oxygen can lead to an explosion.

CAUTION

INTRODUCTION

This Service Manual provides the necessary information to service, repair,
and maintain the outdoor units. Section 2 of this manual has an appendix
with data required to perform troubleshooting. Use the Table of Contents
to locate a desired topic.

Specifications subject to change without notice.

MODEL/SERIAL NUMBER NOMENCLATURES

Table 1—Unit Sizes

SYSTEM TONS BTUh VOLTAGE - PHASE OUTDOOR MODEL

1.00 12,000 115-1 DLCERAA12AAJ

Cooling Only

Heating Pump

DLC = CONDENSING UNIT

E = MODEL

1.00 12,000 208/230-1 DLCERAA12AAK

1.50 18,000 208/230-1 DLCERAA18AAK

2.00 24,000 208/230-1 DLCERAA24AAK

1.00 12,000 115-1 DLCERAH12AAJ

0.75 9,000 208/230-1 DLCERAH09AAK

1.00 12,000 208/230-1 DLCERAH12AAK

1.50 18,000 208/230-1 DLCERAH18AAK

2.00 24,000 208/230-1 DLCERAH24AAK

OUTDOOR UNIT

DLC E KH

AR09

A

A

VOLTAGE
J =115-1-60
K = 208/230-1-60

UNIT TYPE
R = OUTDOOR UNIT

A = MAJOR SERIES

SYSTEM TYPE
A = COOLING ONLY
H = HEAT PUMP

V

V = All Models

Year of Manufacture

18 01

MAXIMUM NUMBER OF FAN COIL UNITS THAT
CAN BE CONNECTED TO THE OUTDOOR UNIT

A = 1:1

10001

Sequential Serial Number

Week of Manufacture

A = VARIATION

NOMINAL CAPACITY
09 - 3/4 TON
12 - 1 TON
18 - 1.5 TONS
24 - 2 TONS

Use of the AHRI Certified
TM Mark indicates a
manufacturer’s
participation in the
program For verification
of certification for individual
products, go to
www.ahridirectory.org.

2 32808001101

Specifications subject to change without notice.

SPECIFICATIONS

System

Electrical

Operating

Piping

Refrigerant

Outdoor Coil

Compressor

Outdoor

* Condensing unit above or below the indoor unit

Size 12K 12K 18K 24K

Outdoor Model DLCERAA12AAJ DLCERAA12AAK DLCERAA18AAK DLCERAA24AAK
Voltage, Phase, Cycle V/Ph/Hz 115-1-60 208/230-1-60 208/230-1-60 208/230-1-60
MCA A. 13 7 11 16
MOCP - Fuse Rating A. 20 15 15 25
Cooling Outdoor DB

Min - Max
Total Piping Length ft (m) 82 (25) 82 (25) 98 (30) 164 (50)
Piping Lift
Pipe Connection Size - Liquid In.(mm) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 3/8 (9.52)
Pipe Connection

Size - Suction
Ty pe R410A R410A R410A R410A
Charge lbs (kg) 1.30 (0.59) 1.30 (0.59) 2.09 (0.95) 2.64 (1.20)
Metering Device EEV EEV EEV EEV
Face Area Sq. Ft. 4.15 4.15 4.78 4.78
No. Rows 1 1 2 2
Fins per inch 22 22 22 22
Circuits 2 2 4 6
Ty pe Rotary Inverter Rotary Inverter Rotary Inverter Rotary Inverter
Model ASN98D22UFZ ASN98D22UFZ ASM135D23UFZ ATF235D22UMT
Oil Type VG74 VG74 VG74 VG74
Oil Charge Fl. Oz. 13.0 13.0 13.0 23.6
Rated Current RLA 9.5 4.5 7.0 11.0
Unit Width In.(mm) 30.31(770) 30.31(770) 31.50(800) 33.27(845)
Unit Height In.(mm) 21.85(555) 21.85(555) 21.81(554) 27.64(702)
Unit Depth In.(mm) 11.81(300) 11.81(300) 13.11(333) 14.29(363)
Net Weight lbs (kg) 57.8(26.2) 53.8(24.4) 70.1(31.8) 88.6(40.2)
Airflow CFM 1,170 1,170 1,170 1,880
Sound Pressure dB(A) 52.0 54.0 57.0 59.5

*

T able 2—Specifications (Cooling Only)

COOLING ONLY

°F(°C) 0~ 122 (-17~ 50) 0~ 122 (-17~ 50) 0~ 122 (-17~ 50) 0~ 122 (-17~ 50)

ft (m) 33 (10) 33 (10) 66 (20) 66 (20)

In.(mm) 1/2 (12.7) 1/2 (12.7) 1/2 (12.7) 5/8 (16)

32808001101 3

Specifications subject to change without notice.

SPECIFICATIONS (CONT)

System

Electrical

Operating

Range

Piping

Refrigerant

Outdoor Coil

Compressor

Outdoor

* Condensing unit above or below the indoor unit

Size 12 9 12 18 24

Outdoor Model DLCERAH12AAJ DLCERAH09AAK DLCERAH12AAK DLCERAH18AAK DLCERAH24AAK
Voltage, Phase, Cycle V/Ph/Hz 115-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60
MCA A. 13 8 10 15 18
MOCP - Fuse Rating A. 20 15 15 20 25
Cooling Outdoor DB Min

- Max
Heating Outdoor DB Min

- Max
Total Piping Length ft (m) 82 (25) 82 (25) 82 (25) 98 (30) 164 (50)
Piping Lift
Pipe Connection

Size - Liquid
Pipe Connection

Size - Suction
Ty pe R410A R410A R410A R410A R410A
Charge lbs (kg) 2.11 (0.96) 1.76 (0.80) 2.11 (0.96) 2.82 (1.28) 3.97 (1.80)
Metering Device EEV EEV EEV EEV EEV
Face Area Sq. Ft. 4.1 4.1 4.1 4.7 5.3
No. Rows 1.5 1 1.5 2 2
Fins per inch 18 18 18 18 18
Circuits 4 2 4 4 4
Ty pe Rotary Inverter Rotary Inverter Rotary Inverter Rotary Inverter Rotary Inverter
Model ASN98D22UFZ ASN98D22UFZ ASN98D22UFZ ASM135D23UFZ ATF235D22UMT
Oil Type VG74 VG74 VG74 VG74 VG74
Oil Charge Fl. Oz. 13.0 13.0 13.0 15.8 23.6
Rated Current RLA 9.5 5.5 6.8 10.5 12.0
Unit Width In.(mm) 30.31(770) 30.31(770) 30.31(770) 31.50(800) 33.27(845)
Unit Height In.(mm) 21.85(555) 21.85(555) 21.85(555) 21.81(554) 27.64(702)
Unit Depth In.(mm) 11.81(300) 11.81(300) 11.81(300) 13.11(333) 14.29(363)
Net Weight lbs (kg) 69.0(31.3) 63(28.6) 65.5(29.7) 79.6(36.1) 114.2(51.8)
Airflow CFM 1,170 1,170 1,170 1,170 1,765
Sound Pressure dB(A) 54.5 57.2 57.4 57.0 60.2

*

°F(°C) 0~ 122 (-17~ 50) 0~ 122 (-17~ 50) 0~ 122 (-17~ 50) 0~ 122 (-17~ 50) 0~ 122 (-17~50)

°F(°C) 0~ 86 (-17~ 30) 0~ 86 (-17~ 30) 0~ 86 (-17~ 30) 0~ 86 (-17~ 30) 0~ 86 (-17~30)

ft (m) 33 (10) 33 (10) 33 (10) 66 (20) 66 (20)

In.(mm) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 1/4 (6.35) 3/8 (9.52)

In.(mm) 1/2 (12.7) 3/8 (9.52) 1/2 (12.7) 1/2 (12.7) 5/8 (16)

Table 3—Specifications (Heat Pump)

HEAT PUMP

4 32808001101

Specifications subject to change without notice.

DIMENSIONS

System Size Height (H) in. (mm) Width (W) in. (mm) Depth (D) in. (mm) Weight-Net lbs. (kg)

Cooling

Only

Heat

Pump

12K (115V) 21.85(555) 30.31(770) 11.81(300) 57.8(26.2)

12K (208/230V) 21.85(555) 30.31(770) 11.81(300) 53.8(24.4)

18K (208/230V) 21.81(554) 31.50(800) 13.11(333) 70.1(31.8)

24K (208/230V) 27.64(702) 33.27(845) 14.29(363) 88.6(40.2)

System Size Height (H) in. (mm) Width (W) in. (mm) Depth (D) in. (mm) Weight-Net lbs. (kg)

12K (115V) 21.85(555) 30.31(770) 11.81(300) 69.0(31.3)

9K (208/230V) 21.85(555) 30.31(770) 11.81(300) 63.0(28.6)

12K (208/230V) 21.85(555) 30.31(770) 11.81(300) 65.5(29.7)
18K (208/230V) 21.81(554) 31.50(800) 13.11(333) 79.6(36.1）

24K (208/230V) 27.64(702) 33.27(845) 14.29(363) 114.2(51.8)

T able 4—Dimensions

30.66(779) W3

H

21.85(555)

11.81(300) D

0.47(12)

19.17(487) W1

30.31(770) W

2.76(70) W

0.98(25) B1

D3

D2

3.54(90) B2

D1

11.26(286)

13.07(322)

2.36(60)

2.42(61.5) A2

11.73(298)

H1

H2

.24(6)

0

R

3.66(93)

0.47(12) A1

Unit: inch(mm)

Fig. 1 - Sizes 9K and 12K

32808001101 5

Specifications subject to change without notice.

DIMENSIONS − OUTDOOR (CONT)

H

21.81 (554)

0.47 (1 2)

13.11

(333)

D

20.24 (514)

31.50 (800)

B2

4.17 (1 06)

D3

D2

12.80 (325)

H1

2.36 (6 0)

H2

3.37 (8 5.5)

12.24 (311)

R

0

.

7

9

(R

2

0

)

0.87 (2 2)

A1

2.43 (6 1.6)

A2

W

W1

2.43 (6 1.8)

B1

4

2

.

0

R

)

6

R

(

Unit: inch(mm)

2.76 (7 0)

W2

D1

13.39 (340)

Fig. 2 - Size 18K

6 32808001101

Specifications subject to change without notice.

DIMENSIONS − OUTDOOR (CONT)

32808001101 7

Unit: inch (mm)

Fig. 3 - Size 24K

Specifications subject to change without notice.

CLEARANCES

D

A

B

C

Air-outlet

Fig. 4 - Outdoor Unit Clearance

Table 5—Clearances

UNIT MINIMUM VALUE in. (mm)

A 24 (610)

B 24 (610)

C 24 (610)

D 4 (101)

E 4 (101)

Air-inlet

E

NOTE: The outdoor unit must be mounted at least 2in. (50mm) above the maximum anticipated snow depth.

9.8in (25cm)
or more for
proper airow
24in (61cm) or
more is
recommended
for service

9.8in (25cm)
or more for
proper airow
24in (61cm)
or more is
recommended
for service

59in (150cm)

or more on a

multiple parallel

unit arrangement

24in (61cm) or more

on a single parallel

unit arrangement

24in (60cm)
or more

118in (300cm) or more

19in (48cm) or more
on a multiple parallel
unit arrangement
4in (10cm) or more on
a single parallel unit
arrangement

Fig. 5 - Clearances for Multiple Units

8 32808001101

Specifications subject to change without notice.

ELECTRICAL DATA

Table 6—Electrical Data

Outdoor Unit Size 12K 12K 18K 24K

Cooling Only

Power Supply

Compressor RLA 9.5 4.5 7 11

Outdoor Fan Motor

Heat Pump

Power Supply

Compressor RLA 10.5 5.5 6.8 11.5 12

Outdoor Fan Motor

*Permissible limits of the voltage range at which the unit will operate satisfactorily.

LEGEND

FLA - Full Load Amps
MCA - Minimum Circuit Amps
MOCP - Maximum Over-Current Protection
RLA - Rated Load Amps

Volts-PH-Hz (115V) (208/230V) (208/230V) (208/230V)

Max – Min*

Oper. Voltage

MCA 7 7 11 16

MOCP 15 15 15 25

FLA 0.6 0.4 0.5 0.6

Rated HP 0.054 0.054 0.065 0.068

Output 40 40 48 45

Outdoor Unit Size 12K 9K 12K 18K 24K

Volts-PH-Hz (115V) (208/230V) (208/230V) (208/230V) (208/230V)

Max – Min*

Oper. Voltage

MCA 13 8 10 15 18

MOCP 20 15 15 20 25

FLA 0.6 0.4 0.4 0.5 0.6

Rated HP 0.054 0.054 0.054 0.054 0.068

Output 40 40 40 40 50

127-104 253-187 253-187 253-187 253-187

127-104 253-187 253-187 253-187

WIRING

All wires must be sized per NEC (National Electrical Code) or CEC
(Canadian Electrical Code) and local codes. Use Electrical Data table
MCA (minimum circuit amps) and MOCP (maximum over current
protection) to correctly size the wires and the disconnect fuse or
breakers respectively.

Recommended Connection Method for Power and Communication
Wiring:

The main power is supplied to the outdoor unit. The field supplied 14/3
stranded wire with ground with a 600 volt insulation rating,
power/communication wiring from the outdoor unit to indoor unit
consists of four (4) wires and provides the power for the indoor unit.
T wo wires are line voltage AC power, one is communication wiring (S)
and the other is a ground wire. Wiring between indoor and outdoor unit
is polarity sensitive. The use of BX wire is NOT recommended.

If installed in a high Electromagnetic field (EMF) area and
communication issues exists, a 14/2 stranded shielded wire can be used
to replace L2/N and (S) between outdoor unit and indoor unit landing
the shield onto ground in the outdoor unit only.

!

CAUTION

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment
damage or improper operation.
Wires should be sized based on NEC and local codes.

!

CAUTION

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage
or improper operation.

S Be sure to comply with local codes while running wire from

the indoor unit to the outdoor unit.

S Every wire must be connected firmly. Loose wiring may

cause the terminal to overheat or result in unit malfunction.
A fire hazard may also exist. Ensure all wiring is tightly
connected.

S No wire should touch the refrigerant tubing, compressor or

any moving parts.

S Disconnecting means must be provided and shall be located

within sight and readily accessible from the air conditioner.

S Connecting cable with conduit shall be routed through the

hole in the conduit panel.

32808001101 9

Specifications subject to change without notice.

CONNECTION DIAGRAM

16022000B23477

L

N

Indoor Unit
Power Supply

115-1-60

Indoor
Signal
High
Voltage

115V Indoor Unit 115V Outdoor Unit 230V Indoor Unit 230V Outdoor Unit

Notes:

1. Do not use thermostat wire for any connection between indoor and outdoor units.

2. All connections between indoor and outdoor units must be as shown. The connections are sensitive to polarity and will result in a fault code.

WIRING DIAGRAMS

CONNECTING CABLE
OUTDOOR TO INDOOR

GND

S

Ground

NOTE: The connection wires for the
reactor and the capacitor should be
the same color; either black or brown.

BLUE

RED

BLACK

L

N
Power to
Indoor Unit

115-1-60

3

115-1-60
FIELD POWER SUPPLY

GND

L

S

Indoor
Signal
High
Voltage

N
Main
Power Supply

115-1-60

Fig. 6 - Connection Diagrams

ACITOR
CAP

BROWN(BLACK)

REACTOR

BLACK(BROWN)

BLACK(BROWN)

CN4_2

CN4_3

CN4_1

CN 50

Indoor Unit
Power Supply

208/230-1-60

BROWN(BLACK)

Y/G

Y/G

CN 1A

CN4_4

L1 L2

LBEU

CN 60

CN 17

Indoor
Signal
High
Voltage

BROWN

CONNECTING CABLE
OUTDOOR TO INDOOR

GND

S

Ground

YELLOW OR BLACK

TN
IO

J
TS

AF

Y/G

72,1'22581,7

OPTIONAL

2

2

OPTIONAL

N

L

S

BLACK

GRA Y

BROWN

BLACK

BROWN
1

4-WAY

GRA Y
3

2

OPTIONAL

CRANKCASE
HEATER

L1

L2

Power to
Indoor Unit

208/230-1-60

DE

LBEU

R

/

N

Y/G

9$&
32:(56833/<

208/230-1-60
FIELD POWER SUPPLY

GND

L2

L1

S

Main

Indoor

Power Supply

Signal
High

208/230-1-60

Voltage

V

U

W

COMPRESSOR

Y/G

CN 21

CN 25

CN 7

OPTIONAL:
AC-F

AN

5

AC

-F

5

AN

Y/G

Notes:
This symbol indicates the element
is optional, the actual shape shall
prevail.

Input: temperature acquisition (0~5VDC)

Output: 0~115 VAC to control AC FAN

Connector for electronic expansion
valve(0-12VDC)

Output: 115 VAC to control 4-way valve

&2'(

&1$

&1

&1B&1B
&1B&1B

&1

DISCHARGE TEMP. SENSOR

CONDENSER TEMP

AMBIENT TEMP

3

DC-FAN

OPTIONAL:

. SENSOR

. SENSOR

3$571$0( 3$571$0(

Input: 115V high voltage connector with
L/N/signal/ground

Output: 0~320VDC to control DC FAN

Output:115VAC High voltage connector for
power factor corrector(PFC)

Output: 115VAC to control crankcase heater

Y/G

DC-FAN

&2'(

&1

&1

&1
&1

Fig. 7 - Wiring Diagram Size 12K (115V)

10 32808001101

Specifications subject to change without notice.

WIRING DIAGRAMS (CONT)

Notes:
This symbol indicates the element
is optional, the actual shape shall
prevail.

REACTOR
1005AL

BLUE

BLUE

OPTIONAL

BLUE

RED

BLACK

V

U

W

COMPRESSOR

3

DISCHARGE TEMP. SENSOR

Y/G

&2'(

&1$

&1

&1~&1

&1

Input: 220V high voltage connector with
L/N/signal/ground

Output: 0~320V DC to connect DC FAN

To connect PFC reactor

Output: 220V AC to connect crankcase heater

3$571$0( 3$571$0(

Fig. 8 - Wiring Diagram − Sizes 09K, 12K (208−230V)

CN 9

CN 32

CN 50

CN 21

CONDENSER TEMP

AMBIENT TEMP. SENSOR

. SENSOR

Y/G

MAIN
BOARD

CN 7

3

DC-FAN

OPTIONAL:
DC-FAN

Y/G

Y/G

&2'(

&1

&1
&1

&1

%

BL UE

CN 1A

CN 60
BLUE

CN 17
RED

CN 25

Input: temperature sensor connector (0~5V DC)

Output: 0~320V AC to connect compressor

Output: 0~220V AC to connect 4-way valve

YELLOW OR BLACK

BROWN

L2

L1

Y/G

INDOOR UNIT

OPTIONAL

4-WAY

OPTIONAL

3

Output: 0~220V AC to connect AC FAN

CRANKCASE
HEATER

CAPACITOR

AC-FAN

5

AC-FAN

Y/G

OPTIONAL:

BLUE OR BLACK

RED

L2

S

/

POWER SUPPLY

Y/G

32808001101 11

Specifications subject to change without notice.

WIRING DIAGRAMS (CONTINUED)

HEATER 1

OPTIONAL:the electric
heating belt of compressor

OPTIONAL˖

NWOR

Y/G

B

(RED)

Y/G

BLUE

L1

W­4AY

(BLACK)

BLACK

δYELLOWε

L2

S

RED

L1

Y/G

CN16

CN60

CN6-1

CN8
CN7

CN2

BLACK(BLUE)

L2

OUT DOOR
DC FAN

3

CN414

CN3

Applicable to
the units adopting
DC motor only

OUTDOOR

MAIN

PCB

OUTDOOR AMBIENT
TEMPERATURE SENSOR

OUT DOOR
AC FAN

BLUE

CN5

CN1

WHITE

CONDENSER
TEMPERATURE SENSOR

Applicable to
the units adopting
AC motor only

PACTICARO

N

A

F

BROWN

CN13

CN12

U

V

CN30

W

CN17

CN10

KCALB

DER

K

BLAC

DISCHARGE SENSOR

BLUE

1

RED

2
3

LACK

B

W

COMPRESSOR

BLUE

BLUE

REACTOR

BLUE

RED

ACK

BL

V

U

Y/G

72,1'22581,7

&2'(

&1

&1
&1

&1

L1

L2

32:(56833/<

Input: 230V high voltage connector with
L1/L2/signal/ground

Input: Temperature acquisition(0-5VDC)

3$571$0( 3$571$0(

Output: PWM for UVW to control
Compressor(0~320VAC)

Output: 0~320VDC to control DC FAN

OUTDOOR WIRING DIAGRAM

Fig. 9 - Wiring Diagram Sizes 18K − 24K (Heat Pump Units)

&2'(

&1

&1

&1

CN12/CN13

Output: 0~220VAC to control AC FAN

Output: 220V AC to control crankcase heater

Output: 0~220V AC to control 4-way valve

Output: Connection of the high voltage

(REACTOR)

12 32808001101

Specifications subject to change without notice.

WIRING DIAGRAMS (CONTINUED)

16022000B23636

BLUE

RED

BLACK

V

W

U

COMPRESSOR

Y/G

&2'(

&1

&1

&1

&1

Input: 220V high voltage connector with
L1/L2/signal/ground

Input: Temperature acquisition(0-5VDC)

Output: 0~320VDC to control DC FAN

BROWN

Y/G

BLACK

L1

Y/G

According to the real objects

Y/G

BLUE

S

CN 3

OPTIONAL

,1'22581,7

OPTIONAL

OPTIONAL

Yellow

5

3

4-WAY

CRANKCASE
HEATER

CAPACITOR

$&)$1

BLUE
RED

BLACK

CN 17

CN 29
CN 28
CN 27

CN 21

OUTDOOR

MAIN

PCB

CN 414

CN 60

Blue

CN 16

Red

CN 5

Notes:

DISCHARGE TEMP. SENSOR

CONDENSER TEMP.

AMBIENT TEMP

. SENSOR

SENSOR

7

73

Y/G

7

3$571$0( 3$571$0(

3

DC-FAN

OPTIONAL:
DC-FAN

&2'(

&1

Output: PWM for UVW to control
Compressor(0~320VAC)

&1

&1

Fig. 10 - Wiring Diagram Sizes 18K − 24K (Cooling Only Units)

Output: 220V AC to control crankcase heater

Output: 0~220V AC to control 4-way valve

This symbol indicates
the element is optional,
the actual shape shall
prevail.

Output: 0~220VAC to control AC FAN

L2

AC-F

AN

Y/G

RED

L1

S

L1

32:(56833/<

OPTIONAL:

BLUE

L2

L2

Y/G

32808001101 13

Specifications subject to change without notice.

REFRIGERATION CYCLE DIAGRAMS

INDOOR OUTDOOR

HEAT
EXCHANGE

(EVAPORATOR)

T2 Evaporator
temp. sensor

T1 Room temp.
sensor

LIQUID SIDE

2−WAY VALVE

GAS SIDE

3−WAY VALVE

ACCUMULATOR

CHECK VALVE
(Heating Model only)

CAPILIARY TUBE

COMPRESSOR

HEAT
EXCHANGE
(CONDENSER)

4−WAY VALVE

COOLING
HEATING

Fig. 11 - Heat Pumps

14 32808001101

Specifications subject to change without notice.

REFRIGERANT LINES

General Refrigerant Line Sizing

1. The outdoor units are shipped with a full charge of R410A
refrigerant. All charges, line sizing, and capacities are based on
runs of 25ft. (7.6 m). For runs over 25 ft. (7.6 m), consult the
long−line applications section for the proper charge adjustments.

2. The minimum refrigerant line length between the indoor and
outdoor units is 10 ft. (3 m).

3. Refrigerant lines should not be buried in the ground. If it is
necessary to bury the lines, not more than 36 in (914 mm)
should be buried. Provide a minimum 6in (152 mm) vertical rise
to the service valves to prevent refrigerant migration.

Table 7 lists the maximum lengths allowed.

T able 7—Piping and Refrigerant Information

System Size 12V (115V) 9K (208-230V) 12K (208-230V) 18 (208-230V) 24K (208-230V)

Min. Piping Length ft. (m) 9.8(3) 9.8(3) 9.8(3) 9.8(3) 9.8(3)

Piping

Refrigerant

Standard Piping Length

Max. outdoor-indoor

height difference

(OU higher than IU)

Max. outdoor-indoor

height difference

(IU higher than OU)

Max. Piping Length with
no additional refrigerant

charge per System

(Standard Piping length)

Total Max. Piping

Length per system

Additional refrigerant

charge (between Standard

– Max piping length)

Suction Pipe

(size - connection type)

Liquid Pipe

(size - connection type)

Refrigerant Type Type R410A R410A R410A R410A R410A

Cooling Only Models

Charge Amount

Heat Pump Models

Charge Amount

ft. (m)

ft. (m)

ft. (m)

ft. (m) 24.6(7.5) 24.6(7.5) 24.6(7.5) 24.6(7.5) 24.6(7.5)

ft. (m) 82(25) 82(25) 82(25) 98(30) 98(50)

Oz/ft (g/m) 0.161(15) 0.161(15) 0.161(15) 0.161(15) 0.322(30)

In (mm)

In (mm)

Lbs (kg) 1.30(0.59) 1.06(0.48) 1.30(0.59) 2.1(0.95) 2.65(1.2)

Lbs (kg) 2.12(0.96) 1.76(0.8) 2.12(0.96) 2.82(1.28) 3.97(1.8)

24.6(7.5) 24.6(7.5) 24.6(7.5) 24.6(7.5) 24.6(7.5)

32(10) 32(10) 32(10) 65(20) 65(20)

33(10) 33(10) 33(10) 66(20) 66(20)

ø1/2(12.7) ø3/8(9.52) ø1/2(12.7) ø1/2(12.7) ø5/8(15.9)

ø1/4(6.35) ø1/4(6.35) ø1/4(6.35) ø1/4(6.35) ø3/8(9.52)

4. Both lines must be insulated. Use a minimum of 1/2in. (12.7
mm) thick insulation. Closed−cell insulation is recommended in
all long−line applications.

5. Special consideration should be given to isolating
interconnecting tubing from the building structure. Isolate the
the tubing so vibration or noise is not transmitted into the
structure.

IMPORTANT: Both refrigerant lines must be insulated separately.

Long Line Applications:

1. No change in line sizing is required.

2. Add refrigerant per T able 7.

32808001101 15

Specifications subject to change without notice.

SYSTEM EVACUATION AND

t

CHARGING

!

UNIT DAMAGE HAZARD

Failure to follow this caution may result in equipment
damage or improper operation.

Never use the system compressor as a vacuum pump.

Refrigerant tubes and indoor coil should be evacuated using the
recommended deep vacuum method of 500 microns. Always break a
vacuum with dry nitrogen.

System Vacuum and Charge

Using Vacuum Pump

1. Completely tighten all flare nuts and connect manifold gage
charge hose to a charge port of the low side service valve (see
Fig. 12).

2. Connect the charge hose to the vacuum pump.

3. Fully open the low side of manifold gage (see Fig. 13).

4. Start the vacuum pump

5. Evacuate using the triple evacuation method.

6. After evacuation is complete, fully close the low side of mani­fold gage and stop the vacuum pump operation.

7. The factory charge contained in the outdoor unit is good for up
to 25 ft. (8 m) of line length. For refrigerant lines longer than
25 ft. (8 m), add refrigerant as specified in the ADDITIONAL
REFRIGERANT CHARGE table in this document.

8. Disconnect the charge hose from the charge connection of the
low side service valve.

9. Fully open service valves B and A.

10. Securely tighten the service valves caps.

Outdoor Unit

Service Valve

500 microns

Low side valve

Charge hose

CAUTION

Refrigerant

Low Side

A

High Side

B

Fig. 12 - Service Valve

Manifold Gage

High side valve

Charge hose

Low side valve

Fig. 13 - Manifold

Indoor Uni

C

D

Vacuum pump

Deep Vacuum Method

The deep vacuum method requires a vacuum pump capable of pulling a
vacuum of 500 microns and a vacuum gage capable of accurately
measuring this vacuum depth. The deep vacuum method is the most
positive way of assuring a system is free of air and liquid water (see Fig.

14).

5000
4500
4000
3500
3000
2500
2000

MICRONS

1500
1000

500

01234567

MINUTES

LEAK IN
SYSTEM

V ACUUM TIGHT
TOO WET

TIGHT
DRY SYSTEM

Fig. 14 - Deep Vacuum Graph

Triple Evacuation Method

The triple evacuation method should be used. Refer to Fig. 15 and
proceed as follows:

1. Pump the system down to 1500 microns and allow the pump to
continue operating for an additional 15 minutes.

2. Close the service valves and shut off the vacuum pump.

3. Connect a dry nitrogen cylinder and regulator to the system and
break vacuum until the system reaches 2 psig.

4. Close the service valve and allow the system to stand for 1hr.
During this time, the dry nitrogen can diffuse throughout the
system absorbing moisture.

5. Pump the system down to 1000 microns.

6. Break the vacuum with dry nitrogen (2 psig).

7. Pump the system down to 500 microns.

8. Perform the hold test for 30 minutes.

EVACUATE TO 1500 MICRONS

BREAK VACUUM WITH DRY NITROGEN TO 2 PSIG

EVACUATE TO 1000 MICRONS

BREAK VACUUM WITH DRY NITROGEN TO 2 PSIG

EVACUATE TO 500 MICRONS MINIMUM (HOLD FOR 30 MINUTES)

CHECK FOR TIGHT, DRY SYSTEM

(IF IT HOLDS DEEP VACUUM)

RELEASE CHARGE INTO SYSTEM BY OPENING VALVES COMPLETELY

Fig. 15 - Triple Evacuation Method

Final Tubing Check
IMPORTANT: Check to be certain factory tubing on both indoor

and outdoor unit has not shifted during shipment. Ensure tubes are
not rubbing against each other or any sheet metal. Pay close
attention to feeder tubes, making sure wire ties on feeder tubes are
secure and tight.

16 32808001101

Specifications subject to change without notice.

ELECTRONIC FUNCTIONS

Abbreviation

T1: Indoor room temperature
T2: Coil temperature of evaporator
T3: Coil temperature of condenser
T4: Outdoor ambient temperature
T5: Compressor discharge temperature

Display function
Icon explanation on indoor display board

Fig. 16 - Digital display

S Displays the temperature settings when the air conditioner is

operational.

S Displays the room temperature in FAN mode.
S Displays the self−diagnostic codes.

S Displays for three seconds when Timer ON, Fresh,

Swing, Turbo or Silence feature is activated.

S Displays for three seconds when Fresh, Swing, Turbo, or

Silence feature is cancelled.

S Displays under defrosting operation.
S Displays when anti−cold air feature is activated under

heating mode.

S Displays during self clean operation (if applicable).
S Displays under 8°C heating operation (if applicable).
S When ECO function (optional) is activated, the

illuminates gradually one by one as

in one second intervals.

Fig. 17 - WIFI control display (optional)

Displays when the WIFI control feature is activated (Not
available on some units).

NOTE: A guide on using the infrared remote is not included
in this literature package.

Main Protection

Three minute delay for compressor restart

Less than a 1 minute delay for the initial start*up and a 3 minute delay
for subsequent starts.

Compressor top temperature protection

The unit stops working when the compressor top temperature protector
cuts off, and restarts after the compressor top temperatrue protector
restarts.

Compressor discharge temperature protection

Compressor discharge temp. T5>239_F(115_C) for 5s, compressor
stops.

Fan Speed is Out of Control

When the indoor fan speed remains too low (300RPM) the unit stops
and the LED displays the failure.

Inverter module protection

The inverter module has a protection function for current, voltage and
temperature. If any of these protections engage, the corresponding
code displays on the indoor unit and the unit stops working.

Compressor preheating functions

Preheating permitting condition: When the T4 (outdoor ambient
temperature)<37.4

Zero Crossing Detection Error Protection

If the AC detects that the time interval is not correct for a continuous
period of 240s, the unit stops and the LED displays the failure. The correct
zero crossing signal time interval should be between 6−13ms.

Sensor Protection at Open Circuit and Breaking Disconnection

When there is only one malfunctioning temperature sensor, the air
conditioner keeps working yet displays the error code, in case of any
emergency use. When there is more than one malfunctioning
temperature sensor, the air conditioner stops working.

Refrigerant leakage detection

This function is only active in the COOLING mode. The function
helps prevent the compressor from being damaged by a refrigerant
leakage or a compressor overload.

Open condition:
When the compressor is active, the evaporator T2 coil temperature

value has no or very little change.

_F (3_C), the preheating function engages.

Operation Modes and Functions

FAN Mode

1. Outdoor fan and compressor stop

2. Temperature setting function is disabled, and no setting
temperature is displayed.

3. Indoor fan can be set to high/med/low/auto

4. The louver operates the same in the COOLING mode.

5. Auto fan

32808001101 17

Specifications subject to change without notice.

Fig. 18 - Auto Fan
COOLING Mode
Compressor Running Rules:

S When T1*Ts < 28.4_F(*2_C), the compressor stops.
S When T1*TS > 31.1_F(*0.5_C), the compressor activates.
S When the AC runs in the mute mode, the compressor runs

with low frequency.

S When the current is more than setting value, the current

protection function activates, and the compressor stops.

Outdoor Fan Running Rules:

The outdoor unit runs at a different fan speed according to T4. For
different outdoor units, the fan speeds differ.

Fig. 21 - Compressor Temperature Protection

When the condenser temperature temperature is higher than the setting
value, the compressor stops.

Compressor Running Rules

When T1−Ts>−ΔT, the compressor stops, when T1−TS<ΔT−1.5，the
compressor will be on. ΔT is the programmed parameter of
temperature compensation. When the AC run in mute mode, the
compressor runs with low frequency.

When the current is more than setting value, the current protection
function is activated and the compressor stops.

Outdoor Fan Running Rules

The outdoor unit runs at different fan speed according to T4. For
different outdoor units, the fan speeds are different.

Fig. 19 - Outdoor Fan Running Rules

The auto fan adheres to the following rules.

Fig. 20 - Auto Fan

Fig. 22 - Outdoor Fan Running Rules

Auto Fan Action in HEATING Mode

18 32808001101

Specifications subject to change without notice.

T1

T able 8—Auto Mode

ΔT=T1-Ts Running mode

a

b

c

d

e

Fig. 23 - Auto Fan Action in HEATING Mode

DEFROST Mode

The air conditioner enters the DEFROST mode according to the T3
temperature value and the T3 temperature change value range plus the
compressor running time.

During the DEFROST mode, the compressor continues to runs, the
indoor and outdoor motors stop, and the indoor unit defrost lamp

illuminates and
If any one of the following items is satisfied, the defrosting finishes and

the machine reverts to the normal heating mode.

−−−−T3 rises to be higher than TCDE1

−−−−T3 keeps to be higher than TCDE2

−−−−The machine has run for 15 minutes in defrosting mode.

Evaporator Coil Temperature Protection

appears.

_C.

_C for 80 seconds.

T2

TEstop

TEdown

TEH2

Fig. 24 - Evaporator Coil Temperature Protection

NOTE: The following applies to Fig. 24:

Off

Decrease

Hold
Resume

S Off: Compressor stops
S Decrease: Decrease the running frequency to the lower level
S Hold: Keep the current frequency
S Resume: No limitation for frequency

When the evaporator temperature is higher than the setting protection
value, the compressor stops.

Auto−Mode

This mode can be chosen with the remote controller and the setting
temperature can be changed between 62.6

In the AUTO mode, the machine chooses the COOLING, HEATING
or FAN−ONLY mode according to

_F(17_C)~86_F(30_C).

ΔT (ΔT =T1−Ts).

ΔT＞2℃ Cooling

-2≤ΔT≤2℃ Fan-only

ΔT<-2℃ Heating

The indoor fan runs under auto fan in the relevant mode. The louver
operates same as in relevant mode. If the machine switches mode
between HEATING and COOLING, the compressor stops for 15
minutes and then chooses the mode according to T1−Ts. If the setting
temperature is modified, the machine chooses the running function
again.

DRY mode
Indoor fan speed is fixed at breeze and can not be changed.

The louver angle is the same as in the cooling mode.

Low indoor room temperature protection

In the DRYING mode, if the room temperature is lower than 50_F

_C), the compressor stops and does not resume until the room

(10
temperature exceeds 53.6

Evaporator anti*freezing protection, condenser high temperature
protection and outdoor unit frequency limit are active and are the same
as that in the cooling mode. The outdoor fan operates the same as in
cooling mode.

Forced Operation Function

_F (12_C).

S Enter forced operation function: When the machine is off,

press Touch to engage the the Forced Auto Mode. Press
Touch again, within 5 seconds, to engage the Forced Cooling

Mode. In Forced Auto, forced cooling or any other operation
mode, press the touch button to turn off the unit. In the forced
operation mode, all general protections and remote control
are available.

Operation rules:

S Forced cooling mode: The compressor runs at the F2

frequency and the indoor fan runs as a breeze. After running
for 30 minutes, the unit enters the auto mode as 75.2

_C) setting temperature.

(24

_F

S Forced auto mode: The forced auto mode is the same as the

normal auto mode with a 75.2

AUTO−RESTART Function

The indoor unit is equipped with the AUTO−REST AR T function,
which is carried out through an auto−restart module. In the event of a
sudden power failure, the module memorizes the setting conditions
prior to the power failure. The unit resumes the previous operation
setting (not including the SWING function) automatically three (3)
minutes after the power returns.

If the memorization condition is the FORCED COOLING mode, the
unit will run in the COOLING mode for 30 minutes and turn to the
AUTO mode at the 75.2

If the air conditioner is off before the power turns off and the air
conditioner is required to start up, the compressor delays start up for 1
minute before powering on. In other instances, the compressor waits
three (3) minutes before restarts.

_F(24_C) setting temperature.

_F (24_C) setting temperature.

32808001101 19

Specifications subject to change without notice.

Refrigerant Leak Detection

With this new technology, the display area displays “EC” when the
outdoor unit detects a refrigerant leak. This function is only active in
cooling mode. It can better prevent the compressor being damaged by
refrigerant leakage or compressor overload.

Open Condition: When the compressor is active, the value of the Coil
temperature of evaporator T2 has no change or very little change.

_F (8_C) Heating

46

When the compressor is running, the indoor fan motor runs without the
ANTI−COLD air function. When the compressor is off, the indoor fan
motor is off.

Point Check Function

Press the remote controller’s LED DISPLAY or LED or MUTE button three times, and then press the AIR DIRECTION or SWING button three
times in ten seconds, the buzzer rings for two seconds. The air conditioner enters into the information enquiry status.

Press the LED DISPLAY or AIR DIRECTION button to check the next or front item’s information.
When the air conditioner enters the information enquiry status, it displays the code name in 2 seconds (see Table 9).

T able 9—Information Enquiry

ENQUIRY INFORMATION DISPLAYING CODE MEANING

T1 T1 T1 temp.

T2 T2 T2 temp.

T3 T3 T3 temp.

T4 T4 T4 temp.

T2B Tb T2B temp.

TP TP TP temp.

TH TH TH temp.

Targeted Frequency FT Targeted Frequency

Actual Frequency Fr Actual Frequency

Indoor Fan Speed IF Indoor fan speed

Outdoor Fan Speed OF Outdoor fan speed

EXV Opening Angle LA EXV opening angle

Compressor continuous running time CT Compressor continuous running time

Compressor stop causes ST Compressor stop causes

Reserve A0

Reserve A1

Reserve b0

Reserve b1

Reserve b2

Reserve b3

Reserve b4

Reserve b5

Reserve b6

Reserve dL

Reserve Ac

Reserve Uo

Reserve Td

20 32808001101

Specifications subject to change without notice.

When the air conditioner enters the information enquiry status, it displays the code value for 25 seconds (see Table 10).

T able 10—Information Enquiry

ENQUIRY

INFORMATION

T1,T2,T3,T4,

T2B,TP,TH,

Targeted

Frequency,

Actual

Frequency

Indoor fan speed

/Outdoor fan speed

EXV opening angle 0-FF

Compressor

continuous running

time

Compressor stop

causes

Reserve 0-FF

DISPLAY VALUE MEANING REMARK

-1F,-1E,-1d,-1c,

-1b,-1A

-19—99 -19—99

A0,A1,…A9 100,101,…109

b0,b1,…b9 110,111,…119

c0,c1,…c9 120,121,…129

d0,d1,…d9 130,131,…139

E0,E1,…E9 140,141,…149

F0,F1,…F9 150,151,…159

0 OFF

1,2,3,4

14-FF

0-FF 0-255 minutes

0-99

-25,-24,-23,-22,-21,-20

Low speed, Medium speed, High

Actual fan speed = Display value

For the detailed meaning, please

speed, Turbo

turns to decimal value and then

multiply 10. The unit is RPM.

Actual EXV opening value =

Display value turns to decimal

value and then multiply 2.

consult with engineer

1. The displaying temperature is the actual value.

2. The temperature is _C no matter what kind of remote con
troller is used.

3. T1,T2,T3,T4,T2B display range:-25~70, TP display
range:-20~130.

4. Frequency display range: 0~159HZ.

5. If the actual value exceeds the range, it displays the
maximum value or minimum value.

For some big capacity motors.

For some small capacity motors, the display value is from 14-FF

(hexadecimal), the corresponding fan speed range

is from 200-2550 RPM.

If the actual value exceeds the range, it displays the
maximum value or minimum value.

Decimal display

32808001101 21

Specifications subject to change without notice.

TROUBLESHOOTING

Safety

Electricity power is kept in capacitors even if the power supply is shut off.
NOTE: Remember to discharge the electricity power in capacitor.

Electrolytic Capacitors

(HIGH VOLTAGE! CAUTION!)

Fig. 25 - Electrolytic Capacitors

For other models, please connect discharge resistance (approximately 100
electrolytic capacitor on the contrary side of the outdoor PCB.

Fig. 26 - Discharge Position

NOTE: Fig. 26 is for reference only. The plug on your unit may differ.

Ω 40W) or a soldering iron (plug) between the +, − terminals of the

22 32808001101

Specifications subject to change without notice.

OUTDOOR UNIT DIAGNOSTIC GUIDES

T able 11—Diagnostic Guides

OPERATION LAMP TIMER LAMP DISPLAY LED STATUS

☆1 time
☆ 2 times
☆ 3 times
☆ 4 times
☆ 5 times
☆ 6 times
☆ 7 times

☆ 1 time
☆ 2 times
☆ 3 times
☆ 4 times
☆ 5 times
☆ 6 times

☆ 1 time ☆
☆ 2 times ☆
☆ 3 times ☆
☆ 4 times ☆
☆ 5 times ☆
☆ 6 times ☆

X E0 Indoor unit EEPROM parameter error

X E1 Indoor / outdoor units communication error

X E2 Zero-crossing signal detection error

X E3 Indoor fan speed has been out of control

X E4 Indoor room temperature sensor T1 open circuit or short circuit

X E5 Evaporator coil temperature sensor T2 open circuit or short circuit

X EC Refrigerant leakage detection

O F0 Overload current protection

O F1 Outdoor ambient temperature sensor T4 open circuit or short circuit

O F2 Condenser coil temperature sensor T3 open circuit or short circuit

O F3 Compressor discharge temperature sensor T5 open circuit or short circuit

O F4 Outdoor unit EEPROM parameter error

O F5 Outdoor fan speed has been out of control

P0 IPM malfunction or IGBT over-strong current protection

P1 Over voltage or over low voltage protection

P2 High temperature protection of IPM module or compressor top

P3* Outdoor ambient temperature too low.

P4 Inverter compressor drive error

P5 Indoor units mode conflict (multi-zone ONLY)

O（light） X（off） ☆（flash）

32808001101 23

Specifications subject to change without notice.

PCB DIAGRAMS

bridge

IPM for compressor

DZ304 DZ303

E303

C318

E302

C316 C314

connect to PFC Capacitor
when is on, 100−130V AC
output

US−KFR−35W/BP3N1− (115V+RX62T+41560).D.13.WP2−1

C3

RY1

Comment
Comment

D402

+

+

C409

E405

R136

R135

CN6

TESTPORT

R426

R428

R137

R429

R427

R138

R112

R111

L1

IC401

+

+

E407

Rdi

[1.6] 2015−09−30

L2L3L4L5

C9A

C11 C10

R2

C7

IC1

R195

R132
R128

C110

R133

R129

C122

C16

R410

R401

D401

C401

C412

T401

+

C410

D407

E102

+

D403

DZ204

+

+

E283

E404

R506
R508

R504
R502

R516

C1

R21 R23

IC2

Q101
R131
R130

RY2

RY4

IC105

7805

C413

C274

+

C271
DZ201

+

C520

+

AC

AC

−

BR1

E2

ZR4

C5

R253

0.75¦,/1W
R254

0.75¦,/1W

E1

R606

+

D610

DZ601
R605
D406

R603

DZ301

R604

DZ302

IC601

C601

C303
R623

E300

E206

R602

C624

C306

C308

C307

C302

3W−10m¦,¡À1%

E304

E208

3W−10m¦,¡À1%

C324

R304

R305

R316

C309

C310

C311

R303

C312

R306
R314
R315

IPM301

R618

R616
R617
R615
R607

C319

R612
R611R610
R608
R626

C605

IC602

C606

E605

R601

D602

R318

R317

C320
R321

R320

R319

W

C321

BLACK

CN28

R322

C512

C511

R521

R519

RED

V

CN29
CN50

U

CN30

BLUE

+

C4

P

C2

PTC1

E3

+

R191

SW2

ON

IC404

R405

R408

ON

+

C408

4

3

12

R403

3

R157

+

R156

E109

C612

C615

C611

R155
R154

E105

IC603

R620

+

R176

R175

R301

R621

C614

C107

D103

R619

R165

C124

C123

R182

R178

R174

C119

R186R185

R181

C613

R180
C128
R188

R187

C130
C129

R179

C131
C322

+

D104

C513
R523

R190

C132

R323

C133
R101

+

1

E602

C106

R103

R108

C618

C101

R102

R106

OSC101

R628

C102

IC102

IC301

C103
R105

R107

C104

C105

+
C323

D101

R118

R121

R120

R115

R196

E103

R518

R517

R522

R520

R122

CN507

R116

R117

R104

IC403

LED101

4

21

C305

C402

+

R404

R421

R406

E401

C121

R407

C120

+

C405

+

R152
R150

R409

E410

+

C125
C127

C126

E409

D404

R513

C509

C118

IC101

R149

C112

R148

R147

C404

C116

C111

C113

C135

R125

R124

+

R127

R126

R140
R142

+

R143

E101

C115

R110

R114

IC103

R123

C114

R144

1

1

1

CN505

17122000019195

+

D2

RY3A

SJ−S−112DMG

+−

C134

+ E280

IC405

C275

CN4_1CN4_2

DSA1

OUTIN

RY3

E106

R528

C508

C507

C272

DZ202

CAP

REACTOR

AC

+

E108

+

connect to reactor
when is on, 100−130V AC output

CN4_3CN4_4

ZR2

CN1A

ZR1

ZR5

T20A/250VAC

FUSE1

RC1

D1

C6

+

R1

RY5

RC2

AC−FAN

~~

C8

IC104

C117

CN15

CN21

TP

T3T4

+

E107

R170

R169

NTC2

+

R171

R173

R168

R172

C506

C505

C504

C503

IPM501

DZ203

+

C273

E282

+

+

E281

DC−FAN

Earth

CN3

CN1
CN2

CN16

HEAT1

CN17

4−WAY

CN60

HEAT2

CN31

L−IN N−IN

S

N

N

CN25

N

H

L

N

PMV

CN7

connect to
Ground

connect to N−line

(100−130VAC INPUT)

connect to L−line
(100−130VAC INPUT)

connect to indoor unit
communication

connect to compressor heater
when is on, 100−130V AC output

connect to 4−way Valve
when is on, 100−130VAC OUTPUT

AC fan motor
FAN Starting Capacitor

5
4

N line

3

high speed

2

low speed

1

FAN Starting Capacitor

connect to chassis heater
when is on, 100−130VAC OUTPUT

pipe temp.sensor& room temp.
sensor&Exaust temp. sensor

+12V DC
+12V DC
+12V DC pulse wave between (+4)−GND
+12V DC pulse wave between (+2)−GND
+12V DC pulse wave between (+3)−GND

6 5 4 3 2 1

+12V DC pulse wave between (+1)−GND

connect to Electric Expansion Valve
external driver motor

connect to DC Motor

W

0VAC (standby)

V

10− 230VAC¡¯ (running)

U

TP T4 T3
6 5 4 3 2 1
RT

RT

+5VDC

+5VDC

+5VDC

RT

IPM for
compressor

W

10−230VAC¡¯(running)

0VAC(standby)

UV
connect to

compressor

connect to PC
communication

EEPROM Programmer
Port

Test Port

IPM for DC FAN

Fig. 27 - Size 12k (115V)

LED101 status light (Red)

C5

C695

ZR3

R606

+

C333

3W− 10m|??¨¤1%

R316

BLACK

CN28

RED

CN29

CN9

ZR4

R695

E2

R191

R617
R615
R607

R612

R610R611
R608
R626

C605

IC602

C319

D103

R178

R182
R186
R185
R187

E605

R601

D602

C320

R317

R318

R321

W

C511C512
R519

V

CN50

U

CN30

BLUE

slow flicker:standby（
quick flicker:error（
continuous light: normally running

CN32

R696

C696

P

N

R403

C612

E109

R618

C615

C611

IC603

R616

E105

R620
R621

C614

R174
R181

C613

R180
C128
R188

C606

C130
C129
C131

R179

C322

D104

C513

R523

C132

R190

C133

R323

R101

1

E602

R103

R102

C101

C618

R106

R628

C102

R319

R320

IC102

C321

IC301

C103
R105

R107

D101

R322

C323

R521

E103

R517

R518

R520

R522

R122

R104

R116

R117

KFR−35W/BP3N1−(RX62T+41560).D.13.WP2−1

Connect to PC
communication

Connect to reactor

BR

FRD

R189

IGBT

DZ303

DZ304

E302

E303

C330

C331

C318

BR1

D601

3W−10m1%

Q601

D610

DZ601

R605

E304

C334

D406

E208

R604

DZ301

R603

DZ302

C324

C303

C601

IC601

R304

R623

R305

E206

E300

C309

R602

C624

C332

C306

C307

C308

C310

C10

C314C316

C302

C311

R303

C312

R306
R314
R315

IPM301

connect to the DC compressor

10−200VAC¡¯ (running)

0VAC (standby)

W
V

U

R157

C104

R120

R196

CN507

R156
R155
R154
R175

R176

C107

C123

C124

R165

R619

C106

R108

C105
R115

R121

R118

0.5Hz）

2Hz）

SW2

ON

IC404

ON

R408

4

21

3

3

412

LED101

R421
C121
C120

C405

R152

R301

R150

E410

C125

C119

C127

C305

C126

C118
IC101
C112

C135

R125

OSC101

R124
R127

R143

E101

C115

R110

R114

R123

1

CN505

EEPROM Programmer Port

R407

C111

IC103

L601

R405

C408

R406

E409

C509

R513

R149
R148

R147

C116
C113

R126

E405

R144

Connect to DR module

C4

C9

CN11
DR_L

E1

IC403
C402

R404

E401

D402

R409

D404

C409

C404

R427

R428

R426

E407
R140
R142

R135

R136

R137

R138

C114

CN6

TESTPORT

1

FUSE1 20A/250VAC

17122000002718

CN10

DR_N

L5L4L3L2

C2

C3

C11

L1

C110
R129
C122
R133

PTC1

RY1

R128

R132

R195
Q101

R131

R130

C16

RY2

R401

R410

IC401

D401

C401

+

T401

C412

C410

+

D407

E102

C413

D403

R429

DZ204

E283

E404

R506

Rdi

Low−Fre

R504

R508

Have

NO
YES

No

R502

Rdi

R516

R112

R111

C520

[1.8] 2015−12−31

RY4

IC105

7805

C274

C271
DZ201

+

+

T20A/250VAC
IC1

RY3A

C134

E280

DAS1

CN3_1

ZR5

C1

ZR2

ZR1

CN2

C6

FUSE1

R23R21

R3

RC1

HEAT1

CN17

D1D2

R2

C7

IC2

RY3

IC405

E106

C275

C507

C508

R528

C272

DZ202

4−WAY

R1

RY5

CN60

RC2

CN25

HEAT2

RC3

CN15

C8

IC104

AC−FAN

C117

CN31

T4TP

CN22

CN21

T3

NTC2

R168

R169

R171

E108

R172

R173

E107

C503

C504

C505

C506

IPM501

DZ203

C273

+ E282

+

E281

Test Port

CN1A

Earth

CN3

N−INL−IN

CN1

CN16

S
N

N

N

H

L

PMV
R170

CN7

DC−FAN

power supply

connect to earth

power supply
208−230V AC
connect to the terminal

connect to indoor unit communication

CN17

connect to compressor heater

when heater is ON, output 208−230V AC

CN60
connect to 4−way valve
when 4−way is ON, output 208−230VAC

HEAT2
connect to chassis heater
when is on, 208−230VAC OUTPUT

N ground

AC fan motor

H high speed
L low speed

CN21/CN22
exhaust temp. sensor& pipe
temp.sensor& room temp.
sensor

External driver motor

W

connect to DC Motor

V

0VAC (standby)

U

10−200VAC¡¯ (running)

TP T4 T3
6 5 4 3 2 1

+5VDC

RT

RT

+5VDC

+5VDC

RT

+12V DC

+12V DC

+12V DC pulse wave between (+4)−GND

+12V DC pulse wave between (+1)−GND

+12V DC pulse wave between (+2)−GND

+12V DC pulse wave between (+3)−GND

6 5 4 3 2 1

connect to Electric Expansion Valve

Fig. 28 - Size 09k−12k (208−230V)

24 32808001101

Specifications subject to change without notice.

PCB DIAGRAMS (CONT)

Fig. 29 - Sizes 18k−24k (208−230V)

NOTE: After power on, LED3(Green color) and LED2(Red color) will flash if the unit has some problems.

T able 12—LED Codes

No. Problems

1 Standby for normal O X
2 Operation normally X O

3 IPM malfunction or IGBT over-strong current protection

4 Over voltage or too low voltage protection O O P1
5 EEPROM parameter error O ☆ E5
6 Inverter compressor drive error X ☆ P4

7 Inverter compressor drive error
8 Inverter compressor drive error ☆ ☆ P4

LED3

(Green)

☆

☆

LED2
(Red)

O(light) X(off) ☆(2.5Hz flash)

IU display

X P0

O P4

32808001101 25

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION

EEPROM Parameter Error Diagnosis and Solution (E0/F4)

Error Code E0/F4

Malfunction decision conditions Indoor or outdoor PCB main chip does not receive feedback from the EEPROM chip.

Supposed causes

Troubleshooting

EEPROM: A read−only memory whose contents can be erased and reprogrammed using a pulsed voltage. For the EEPROM chip location, please

refer to Fig 30 and Fig. 31.

S Installation mistake
S PCB faulty

Power off, then restart the

unit 2 minutes later.

Yes

Replace the indoor/outdoor

main PCB.

Fig. 30 - Indoor PCB

Fig. 31 - Outdoor PCB

NOTE: The two pictures above are for reference only and they may differ from the actual unit.

26 32808001101

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

Indoor / outdoor unit’s communication diagnosis and solution (E1)

Error Code E1

Malfunction Decision Conditions

Supposed Causes

Troubleshooting

Indoor unit does not receive the feedback from outdoor unit during 110 seconds and this condition
happens four times continuously.

S Wiring mistake
S Indoor or outdoor PCB faulty

Power off, then restart the unit 2 minutes later

Yes

Measure Vs., is it a positive fluctuation?
(Vs represents the voltage S and N of the
outdoor unit. Red pan-S, Black pan-N)

Yes

Check the outdoor wiring connection

No

Replace the reactor

Yes

Yes

No

Check whether the
reactor is normal

Yes

Replace the outdoor main PCB.
Power on. Is the error resolved?

No

Replace the indoor main PCB

Check the indoor wiring connection

Yes

Replace the indoor main PCB.
Power on. Is the error resolved?

No

Replace the outdoor main PCB.

32808001101 27

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

Fig. 32 - Test the DC Voltage

Use a multimeter to test the DC voltage between L2 port and S port of the outdoor unit. The red pin of the multimeter connects with the L2 port while
the black pin is for the S port. When air conditioner is running normal, the voltage moves alternately between −50V to 50V. If the outdoor unit has a
malfunction, the voltage will move alternately with positive value. If the indoor unit has malfunction, the voltage will have a certain value.

Fig. 33 - T est the Reactor Resistance

Use a multimeter to test the resistance of the reactor which does not connect with the capacitor. The normal value should be around zero (0) ohm.
Otherwise, the reactor has a malfunction and needs to be replaced.

28 32808001101

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

Zero crossing detection error diagnosis and solution (E2)

Error Code E2

Malfunction decision conditions

Supposed causes

Troubleshooting

When the PCB does not receive a zero crossing signal feedback for 4 minutes or the zero crossing signal
time interval is abnormal.

S Connection mistake
S PCB faulty

Check if the connections and
power supply are normal.

Yes

Indoor main PCB is

defective. Replace indoor

main PCB.

No

Correct the connections. Turn on the
unit when the power supply is good.

32808001101 29

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

Fan speed has been out of control diagnosis and solution (E3/F5)

Error Code E3/F5

Malfunction decision conditions

Supposed causes

Troubleshooting

When indoor fan speed remains too low (300RPM) for certain time, the unit stops and the LED displays
the failure.

S Wiring mistake
S Fan assembly faulty
S Fan motor faulty
S PCB faulty

Power off, then restart the

unit 2 minutes later

Yes

Shut off the power supply,
Rotate the fan by hand.

Yes

Check the fan motor wiring

Yes

Measure the voltage for the

fan motor from the main

PCB

No

No

No

The unit operates normally.

Find the cause and resolve it.

Correct the connections.

Replace the main PCBNo

Yes

Replace the fan motor

30 32808001101

Specifications subject to change without notice.

No

DIAGNOSIS AND SOLUTION (CONT)

Index 1

1. Indoor or Outdoor DC Fan Motor (control chip is in fan motor)

S Power on and when the unit is in standby, measure the voltage of pin1−pin3, pin4−pin3 in fan motor connector. If the voltage va lue is not in

the range shown in Table 13 or Table 14, the PCB has an issue and needs to be replaced.

Fig. 34 - Motor Connector

T able 13—DC motor voltage input and output (voltage: 220−240V~)

NO. COLOR SIGNAL VOLTAGE

1 Red Vs/Vm 280V~380V

2 --- --- ---

3 Black GND 0V

4 White Vcc 14-17.5V

5 Yellow Vsp 0~5.6V

6 Blue FG 14-17.5V

T able 14—DC motor voltage input and output (voltage : 115V~)

NO. COLOR SIGNAL VOLTAGE

1 Red Vs/Vm 140V~190V

2 --- --- ---

3 Black GND 0V

4 White Vcc 14-17.5V

5 Yellow Vsp 0~5.6V

6 Blue FG 14-17.5V

2. Outdoor DC Fan Motor (control chip is in the outdoor PCB)
Power on the unit and check if the fan runs normally. If the fan runs normally, the PCB has an issue and needs to be replaced. If the fan does

not run normally, measure the resistance of each two pins. If the resistance is not equal to each other, the fan motor has an issue and needs to be
replaced, otherwise the PCB has an issue and needs to be replaced.

3. Indoor AC Fan Motor
Power on the unit and set the unit in FAN mode at the high fan speed. Run for 15 seconds then measure the voltage of pin1 and pin2. If the

voltage value is less than 100V(208~240V power supply) or 50V(115V power supply), the PCB has an issue and needs to be replaced.

32808001101 31

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

Open circuit or short circuit of temperature sensor diagnosis and solution (E4/E5/F1/F2/F3)

Error Code E4/E5/F1/F2/F3

Malfunction decision conditions If the sampling voltage is lower than 0.06V or higher than 4.94V, the LED displays the failure.

S Wiring mistake

Supposed causes

Troubleshooting

Check the connection

between the temperature

sensor and PCB.

S Sensor faulty
S PCB faulty

Correct the connectionNo

Yes

Measure the resistance

value of the sensor

Yes

Replace indoor or outdoor

main PCB

Replace the sensorNo

Fig. 35 - Check the connection

32 32808001101

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

Refrigerant Leakage Detection diagnosis and solution (EC)

Error Code EC

Define the evaporator coil temp.T2 of the compressor. It starts running in Tcool.

Malfunction decision conditions

Supposed causes

Troubleshooting

Power off, then restart the

At first, 5 minutes after the compressor starts up, if T2 ＜Tcool－35.6
seconds and this situation occurs 3 times, the display area displays“EC”and the air conditioner will
turn off.

S T2 sensor faulty
S Indoor PCB faulty
S System problems, such as leakage or blocking.

unit 2 minutes later.

Yes

_F (Tcool－2 _C) does not run for 4

Check cool air blowing out
from indoor air outlet

No

Check for system leaks

No

Check for system blocking and
clear the block

Yes

Yes

Check the T2 sensor

Yes

Replace indoor PCB.

Repair the leakage and

recharge the refrigerant.

32808001101 33

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

Overload current protection diagnosis and solution (F0)

Error Code F0

Malfunction decision conditions An abnormal current rise is detected by checking the specified current detection circuit.

S Power supply problems
S System blockage

Supposed causes

Troubleshooting

S PCB faulty
S Wiring mistake
S Compressor malfunction

Check the power supply

Yes

Check for system blockage

Yes

Check the compressor

resistance values

Yes

Check the connections and
wires

Yes

Check the reactor

No

No Clear the blockage

No

No

No

Stop the unit

Replace the compressor

Correct the connections or

replace the wires.

Replace outdoor main PCB

Yes

Replace the outdoor unit

34 32808001101

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

IPM malfunction or IGBT over−strong current protection diagnosis and solution (P0)

Error Code P0

Malfunction decision conditions

Supposed causes

Troubleshooting

When the voltage signal, that the IPM sends to the compressor drive chip is abnormal, the display LED
displays P0”and the air conditioner turns off.

S Wiring mistake
S IPM malfunction
S Outdoor fan assembly faulty
S Compressor malfunction
S Outdoor PCB faulty

Check the wiring between main the
PCB and the compressor

No

Check the IPM No

Yes

Check the outdoor fan and the

outdoor unit ventilation

Yes

Check the compressor resistance

values

Yes

Yes

No

No

Correct the connection or replace

the wires and connectors.

Replace the IPM board or replace

the main PCB

Please refer to the solution of ǏFan

Speed Has Been Out Of Controlǐ

malfunction

Replace the compressor.

Replace the outdoor main PCB

32808001101 35

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

Fig. 36 - P−U

Fig. 37 - P−V

36 32808001101

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

Fig. 38 - P−W

32808001101 37

Fig. 39 - N−U

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

Fig. 40 - N−V

Fig. 41 - N−W

38 32808001101

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

Over voltage or too low voltage protection diagnosis and solution (P1)

Error Code P1

Malfunction decision conditions An abnormal voltage rise or drop is detected by checking the specified voltage detection circuit.

S Power supply problems

Supposed causes

Troubleshooting

S System leakage or block
S PCB faulty

Check the power supply

Yes

Check the connections and
wires

Yes

Check the voltage between P

and N

Yes

Check the reactor

Yes

No

No

No

No

Stop the unit

Correct the connections or

replace the wires.

Replace the IPM board

Replace outdoor main PCB

Replace the reactor

Fig. 42 - Test

NOTE: Measure the DC voltage between the P and N port. The normal value should be around 310V.

32808001101 39

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

High temperature protection of compressor top diagnosis and solution (P2)

Error Code P2

Malfunction decision conditions If the sampling voltage is not 5V, the LED displays the failure.

S Power supply problems

Supposed causes

Troubleshooting

Check if the Fastening screws

on the PCB and IPM radiator

are fixed tightly.

No

S System leakage or block
S PCB faulty

Yes

Tighten the screws and apply

silicon grease.

For other models,

Replace the outdoor control PCB.

40 32808001101

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

Inverter compressor drive error diagnosis and solution (P4)

Error Code P4

Malfunction decision conditions

Supposed causes

Troubleshooting

An abnormal inverter compressor drive is detected by a special detection circuit, including communication
signal detection, voltage detection, compressor rotation speed signal detection, etc.

S Wiring mistake
S IPM malfunction
S Outdoor fan assembly faulty
S Compressor malfunction
S Outdoor PCB faulty

Check the wiring between main PCB
and compressor

No

Check the IPM

Yes

Check the outdoor fan and the

outdoor unit ventilation

Yes

Check the compressor resistance

values

Yes

Yes

No

Correct the connection or replace

the wires and connectors.

Replace the IPM board or replace

the main PCB

Please refer to the solution of ǏFan

No

Speed Has Been Out Of Controlǐ

malfunction

No Replace the compressor.

Replace the outdoor main PCB

32808001101 41

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

Main Parts Check

Temperature Sensor Checking

Disconnect the temperature sensor from the PCB, measure the resistance value with a tester.

Fig. 43 - Tester

Temperature sensors.
Room temp.(T1) sensor,
Indoor coil temp.(T2) sensor,
Outdoor coil temp.(T3) sensor,
Outdoor ambient temp.(T4) sensor,
Compressor discharge temp.(T5) sensor.
Measure the resistance value of each winding by using the multi−meter.

42 32808001101

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

Compressor Checking

Measure the resistance value of each winding by using the tester.

Fig. 44 - Tester

T able 15—Compressor Checking

Position Resistance Value

ASN98D22UFZ ASM135D23UFZ ATF235D22UMT ATF250D22UMT

Blue - Red

1.57Ω 1.75 Ω 0.75 Ω 0.75 ΩBlue - Black

Red - Blue

32808001101 43

Fig. 45 - Compressor Checking

Specifications subject to change without notice.

DIAGNOSIS AND SOLUTION (CONT)

IPM Continuity Check

Turn off the power, let the large capacity electrolytic capacitors discharge completely, and dismount the IPM. Use a digital tester to measure the
resistance between P and UVWN; UVW and N.

T able 16—IPM Continuity Check

Digital Tester Normal Resistance Value Digital Tester Normal Resistance Value

(+)Red (-)Black

N U

P

U V

V W

W (+)Red

∞

(Several MΩ)

Fan Motor

Measure the resistance value of each winding by using the tester.

Table 17—Fan Motor

Model YKT-32-6-202L YKT-32-6-3L YKT-48-6-206 YKT-63-6-200L

Brand Tongde Welling Welling Welling

Black – Red
Main
Blue –Black
AUX

Ω 86 213 152 88.5

Ω 64 156 142 138

(+)Red (-)Black

N

∞

(Several MΩ)

44 32808001101

Specifications subject to change without notice.

Pressure on Service Port

Table 18—Cooling Chart

°F (°C )

BAR 70/59 8.2 7.8 8.1 8.6 10.1

BAR 75/63 8.6 8.3 8.7 9.1 10.7

BAR 80/67 9.3 8.9 9.1 9.6 11.2

ODT/IDT

75

(23.89)

85

(29.44)

95

(35)

105

(40.56)

115

(46.11)

°F (°C )

PSI 70/59 119 113 117 125 147

PSI 75/63 124 120 126 132 155

PSI 80/67 135 129 132 140 162

°F (°C )

MPA 70/59 0.82 0.78 0.81 0.86 1.01

MPA 75/63 0.86 0.83 0.87 0.91 1.07

MPA 80/67 0.93 0.89 0.91 0.96 1.12

ODT/IDT

ODT/IDT

75

(23.89)

75

(23.89)

85

(29.44)

85

(29.44)

95

(35)

95

(35)

105

(40.56)

105

(40.56)

(46.11)

(46.11)

115

115

32808001101 45

Fig. 46 - Cooling Chart

Specifications subject to change without notice.

Pressure on Service Port (Cont)

T able 19—Heating Chart

°F (°C )

BAR 55 30.3 28.5 25.3 22.8 20.8

BAR 65 32.5 30.0 26.6 25.4 23.3

BAR 75 33.8 31.5 27.8 26.3 24.9

ODT/IDT

57/53

(13.89/11.67)

47/43

(8.33/6.11)

37/33

(2.78/0.56)

27/23

(-2.78/-5)

(-8.33/-10.56)

17/13

°F (°C )

PSI 55 439 413 367 330 302

PSI 65 471 435 386 368 339

PSI 75 489 457 403 381 362

°F (°C )

MPA 55 3.03 2.85 2.53 2.28 2.08

MPA 65 3.25 3.00 2.66 2.54 2.33

MPA 75 3.38 3.15 2.78 2.63 2.49

ODT/IDT

ODT/IDT

57/53

(13.89/11.67)

57/53

(13.89/11.67)

47/43

(8.33/6.11)

47/43

(8.33/6.11)

37/33

(2.78/0.56)

37/33

(2.78/0.56)

27/23

(-2.78/-5)

27/23

(-2.78/-5)

17/13

(-8.33/-10.56)

17/13

(-8.33/-10.56)

Fig. 47 - Heating Chart

46 32808001101

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 12K (115V)

1 Panel plate How to remove the panel

plate.

1. Stop the air conditioner
and turn “OFF” the
power breaker.

2. Remove the big handle
first, and then remove

the top cover (3
screws).

Top panel screws (3), 1 screws is under the big handle

Big handle

(3 screws)

3. Remove the front panel

screws (7).

4. Remove the right side

panel screws (11).

Front panel screws (7)

ƻ

2

ƻ

ƻ

ƻ

3

3

4

32808001101 47

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 12K (115V) (CONT)

2 Fan

assembly

How to remove the fan

assembly.

1) Remove the nut

securing the fan, and

remove the fan.

2) After removing the top

cover, release the

hooks and open the

electronic control box

cover.

ƻ

ƻ

3

2

3) Disconnect the fan

motor connector from

the electronic control

board.

T3, T4, T5 sensor

Electronic expansion valve

Compressor

48 32808001101

Specifications subject to change without notice.

4 way valve

Motor

DISASSEMBLY INSTRUCTIONS SIZES 12K (115V) (CONT)

ĺ

4) Remove the fan motor

screws (4) then remove

the motor.

ƻ

5

32808001101 49

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 12K (115V) (CONT)

3 Electrical

parts

How to remove the

electrical parts.

1) After you complete the

steps in item 1 and 2,

remove the compressor

connector.

2) Pull out the two blue

wires connected to the

four way valve.

ƻ

1

3) Pull out connectors of

the condenser coil

temp. sensor (T3),

outdoor ambient temp.

sensor (T4) and

discharge temp. sensor

(T5).

2

ƻ

ƻ

3

50 32808001101

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 12K (115V) (CONT)

ĺ

4) Disconnect the

electronic expansion

valve wire from the

control board.

5) Remove the ground

wires.

6) Remove the wires

(1,2,3).

7) Remove the electronic

control box.

5

ƻ

ƻ

6

32808001101 51

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 12K (115V) (CONT)

4 Four-way

valve

How to remove the

four-way valve.

1) Perform the work of
sections 1 and 3.

2) Recover refrigerant

from the refrigerant

circuit.

3) Remove the coil screw

then remove the coil.

4) Detach the welded

parts of the four-way

valve and pipe.

5) Remove the four-way

valve assembly.

5 Compressor How to remove the

compressor.

The picture of four-way valve may be different from

your actual valve.

3

2

ƻ

ĺ

1) Complete the work of

sections1 and 3.

Recover the refrigerant
from the refrigerant

circuit.

2) Remove the discharge

and suction pipes with

a burner.

3) Remove the hex nuts

and washers securing
the compressor on the

bottom plate.

4) Lift the compressor

from the base pan

assembly.

3

52 32808001101

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 9−12K (208−230V)

No. Part name Procedures Remarks

1

Panel plate How to remove the panel

plate.

1) Stop the air conditioner

and turn “OFF” the

power breaker.

Top panel screws (3 screws, 1 screw is under the big handle)

Front panel screws (6)

Big

Handler screws (3)

2) Remove the big handle

first, then remove the

top panel (3 screws).

3) Remove the front

panel screws (6).

4) Remove the right side

panel screws (8).

ƻ

2

ƻ

ƻ

3

4

32808001101 53

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 9−12K (208−230V) (CONT)

2 Fan

assembly

How to remove the fan

assembly.

1) After removing the

panel plate using

section 1, remove the

hex nut securing the

fan then remove the

fan.

ƻ

ƻ

2

1

2) Release the hooks

and open the

electronic control box

cover.

Compressor

Motor

T3, T4, T5 sensor

4 way valve

Electronic expansion valve

54 32808001101

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 9−12K (208−230V) (CONT)

3) Disconnect the fan

3

ƻ

ƻ

4

motor connector and

from the electronic

control board.

4) Remove the fan motor

screws (4). Then

remove the fan motor.

3 Electrical

parts

How to remove the

electrical parts.

1) After completing the

work in sections 1 and

2, remove the

compressor

connectors.

2) Pull out the two blue

wires connected with

the four way valve.

ƻ

1

2

ƻ

32808001101 55

ƻ

Specifications subject to change without notice.

3

DISASSEMBLY INSTRUCTIONS SIZES 9−12K (208−230V) (CONT)

3) Pull out connectors of

the condenser coil

temp. sensor

(T3),outdoor ambient

temp. sensor (T4) and

discharge temp.

sensor (T5).

4) Disconnect the

electronic expansion

valve wire.

5) Remove the

grounding screw.

6) Remove the wires (1,

2, 3). Then remove

the electronic control

box.

ƻ

ƻ

5

ƻ

4

6

56 32808001101

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 9−12K (208−230V) (CONT)

4 Four-way

valve

How to remove the

four-way valve.

1) Complete the steps in

sections 1, 3.

2) Recover refrigerant

from the refrigerant

circuit.

3) Remove the coil

screw then remove

the coil.

4) Detach the welded

parts of the four-way

valve and pipe.

5) Remove the four-way

valve assembly.

The picture of four-way valve may differ from your

actual valve.
ƻ

3

ƻ

4

5 Compressor How to remove the

compressor.

1) Complete steps in

sections 1, 3.

2) Recover refrigerant

from the refrigerant

circuit.

3) Remove the

4) discharge and suction

pipes with a burner.

5) Remove the hex nuts

and washers securing

the compressor on

the bottom plate.

6) Lift the compressor

from the base pan

assembly.

ƻ

ƻ

3

2

32808001101 57

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V)

No. Part name Procedures Remarks

1

Panel plate How to remove the panel

plate.

1) Stop the air
conditioner and turn

ĀOFFā the power

breaker.

Toppanelscrews (3)

Big handle

screws (3)

2) Remove the top panel
screws (3).

3) Remove the front
panel screws (9).

4) Remove the right side
panel screws (8).

Front panel screws (9)

ƻ

2

ƻ

3

ƻ

4

58 32808001101

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V) (CONT)

2 Fan

assembly

How to remove the fan

assembly.

1) After removing the

panel plate using

section 1, remove the

hex nut securing the

fan then remove the

fan.

2) After removing the top

cover, release the

hooks then open the

electronic control box

cover.

ƻ

ƻ

2

1

T3, T4, T5 sensor

Motor wire Electronic

expansion valve

4 way valve wire

Electric pipe heater and Crankcase

electric heater

Compressor wire

32808001101 59

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V) (CONT)

3) Disconnect the

connector for fan

motor from the

electronic control

board.

ƻ

3

3 Electrical

parts

4) Remove the fan motor

screws. Then remove

the fan motor.

How to remove the

electrical parts.

1) Complete the work of

items 1 and 2, then

remove the

compressor and

reactor connectors.

4

ƻ

ƻ

1

60 32808001101

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V) (CONT)

2) Pull out the two blue

wires connected to the

four way valve.

3) Remove the

connectors of the

condenser coil temp.

sensor (T3),outdoor

ambient temp. sensor

(T4) and discharge

temp. sensor (T5).

2

ƻ

ƻ

ƻ

3

3

4) Disconnect the

electronic expansion

valve wire.

ƻ

4

32808001101 61

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V) (CONT)

ƻ

5) Remove the electric

heaters.

5

ƻ

6) Remove the grounding

screw.

7) Remove the wires (1,

2, 3 or L1, L2, S). Then

remove the electronic

control box.

ļ

7

62 32808001101

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 18K (208−230V) (CONT)

ĺ

4 Four-way

valve

How to remove the

four-way valve.

1) Complete the steps in

sections 1, 3.

2) Recover refrigerant

from the refrigerant

circuit.

3) Remove the coil screw

then remove the coil.

4) Detach the welded

parts of four-way valve

and pipe.

5) Remove the four-way

valve assembly.

The picture of four-way valve may differ from your

actual valve.

ƻ

3

5 Compressor How to remove the

compressor.

1) After completing steps

in sections 1, 3,

recover refrigerant

from the refrigerant

circuit.

2) Remove the discharge

and suction pipes with

a burner.

3) Remove the hex nuts

and washers securing

the compressor on the

bottom plate.

5) Lift the compressor

from the base pan

assembly.

ƻ

2

32808001101 63

ƻ

Specifications subject to change without notice.

3

DISASSEMBLY INSTRUCTIONS SIZES 24K (208−230V)

No. Part name Procedures Remarks

1 Panel plate How to remove the panel

plate.

1) Stop the air

conditioner and turn

“OFF” the power

breaker.

2) Remove the big

handle first, then

remove the top cover

(7 screws).

Top panel screws (3), 1 screw is under the big handle)

Front panel screws (11)

Big handle screws (4)

3) Remove the front

panel screws (11).

4) Remove the right side

panel screws (13).

ƻ

2

ƻ

ƻ

3

4

64 32808001101

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 24K (208−230V) (CONT)

2 Fan

assembly

How to remove the fan

assembly.

1) Remove the panel

plate using the steps in

section 1.

2) Remove the nut

securing the fan, then

remove the fan.

3) Release the hooks and

remove the screws.

Open the electronic

control box cover.

Fan

ƻ

Electronic control box

Compressor

2

ƻ

3

32808001101 65

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 24K (208−230V) (CONT)

T3, T4, T5, sensor

Pressure switch

Compressor

wire

4) Disconnect the fan

motor connector from

the electronic control

board.

5) Remove the fan motor

screws (4) of the fan

motor, then remove

the motor.

ƻ

Electronic expansion

ƻ

4

4 way valve

5

Motor wire

5

ƻ

66 32808001101

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 24K (208−230V) (CONT)

3

Electrical

parts

How to remove the

electrical parts.

1)

After completing the

work in sections 1 and

2, remove the

compressor connector.

2) Pull out the two blue

wires connected with

the four way valve.

Pull out connectors of

3)

the condenser coil

temp. sensor (T3),

outdoor ambient temp.

sensor (T4) and

discharge temp.

sensor (T5).

1

2

3

32808001101 67

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 24K (208−230V) (CONT)

4)5)Disconnect the

pressure switch

connector.

Disconnect the

electronic expansion

valve wire from the

control board.

5

4

6)7)Remove the ground

wires.

Remove the wires (1,

2, 3 or L1, L2, S). Then

remove the electronic

control box.

6

7

68 32808001101

Specifications subject to change without notice.

DISASSEMBLY INSTRUCTIONS SIZES 24K (208−230V) (CONT)

4 Four-way

valve

How to remove the

four-way valve.

1) Complete the steps in

sections 1, 3.

2) Recover the refrigerant

from the refrigerant

circuit.

3) Remove the coil screw

and then remove the

coil.

4) Detach the welded

parts of four-way valve

and pipe.

5) Remove the four-way

valve assembly.

The picture of four-way valve may differ from your

actual valve.

3

ƻ

ƻ

4

5 Compressor How to remove the

compressor.

1) Complete steps in

sections 1, 3. Recover

refrigerant from the

refrigerant circuit.

2) Remove the discharge

and suction pipes with

a burner.

3) Remove the hex nuts

and washers securing

the compressor to the

bottom plate.

4) Lift the compressor

from the base pan

assembly.

ƻ

2

Ĺ

32808001101 69

Specifications subject to change without notice.

APPENDIX 1

Table 20—Temperature Sensor Resistance Value Table for T1, T2, T3, T4 (°C−−K)

°C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm

-20 -4 115.266 20 68 12.6431 60 140 2.35774 100 212 0.62973

-19 -2 108.146 21 70 12.0561 61 142 2.27249 101 214 0.61148

-18 0 101.517 22 72 11.5 62 144 2.19073 102 216 0.59386

-17 1 96.3423 23 73 10.9731 63 145 2.11241 103 217 0.57683

-16 3 89.5865 24 75 10.4736 64 147 2.03732 104 219 0.56038

-15 5 84.219 25 77 10 65 149 1.96532 105 221 0.54448

-14 7 79.311 26 79 9.55074 66 151 1.89627 106 223 0.52912

-13 9 74.536 27 81 9.12445 67 153 1.83003 107 225 0.51426

-12 10 70.1698 28 82 8.71983 68 154 1.76647 108 226 0.49989

-11 12 66.0898 29 84 8.33566 69 156 1.70547 109 228 0.486

-10 14 62.2756 30 86 7.97078 70 158 1.64691 110 230 0.47256

-9 16 58.7079 31 88 7.62411 71 160 1.59068 111 232 0.45957

-8 18 56.3694 32 90 7.29464 72 162 1.53668 112 234 0.44699

-7 19 52.2438 33 91 6.98142 73 163 1.48481 113 235 0.43482

-6 21 49.3161 34 93 6.68355 74 165 1.43498 114 237 0.42304

-5 23 46.5725 35 95 6.40021 75 167 1.38703 115 239 0.41164

-4 25 44 36 97 6.13059 76 169 1.34105 116 241 0.4006

-3 27 41.5878 37 99 5.87359 77 171 1.29078 117 243 0.38991

-2 28 39.8239 38 100 5.62961 78 172 1.25423 118 244 0.37956

-1 30 37.1988 39 102 5.39689 79 174 1.2133 119 246 0.36954
0 32 35.2024 40 104 5.17519 80 176 1.17393 120 248 0.35982
1 34 33.3269 41 106 4.96392 81 178 1.13604 121 250 0.35042
2 36 31.5635 42 108 4.76253 82 180 1.09958 122 252 0.3413
3 37 29.9058 43 109 4.5705 83 181 1.06448 123 253 0.33246
4 39 28.3459 44 111 4.38736 84 183 1.03069 124 255 0.3239
5 41 26.8778 45 113 4.21263 85 185 0.99815 125 257 0.31559
6 43 25.4954 46 115 4.04589 86 187 0.96681 126 259 0.30754
7 45 24.1932 47 117 3.88673 87 189 0.93662 127 261 0.29974
8 46 22.5662 48 118 3.73476 88 190 0.90753 128 262 0.29216
9 48 21.8094 49 120 3.58962 89 192 0.8795 129 264 0.28482

10 50 20.7184 50 122 3.45097 90 194 0.85248 130 266 0.2777
11 52 19.6891 51 124 3.31847 91 196 0.82643 131 268 0.27078
12 54 18.7177 52 126 3.19183 92 198 0.80132 132 270 0.26408
13 55 17.8005 53 127 3.07075 93 199 0.77709 133 271 0.25757
14 57 16.9341 54 129 2.95896 94 201 0.75373 134 273 0.25125
15 59 16.1156 55 131 2.84421 95 203 0.73119 135 275 0.24512
16 61 15.3418 56 133 2.73823 96 205 0.70944 136 277 0.23916
17 63 14.6181 57 135 2.63682 97 207 0.68844 137 279 0.23338
18 64 13.918 58 136 2.53973 98 208 0.66818 138 280 0.22776
19 66 13.2631 59 138 2.44677 99 210 0.64862 139 282 0.22231

70 32808001101

Specifications subject to change without notice.

APPENDIX 2

Table 21—Temperature Sensor Resistance Value Table for T5 (°C−−K)

°C °F K Ohm °C °F K Ohm °C °F K Ohm °C °F K Ohm

-20 -4 542.7 20 68 68.66 60 140 13.59 100 212 3.702

-19 -2 511.9 21 70 65.62 61 142 13.11 101 214 3.595

-18 0 483 22 72 62.73 62 144 12.65 102 216 3.492

-17 1 455.9 23 73 59.98 63 145 12.21 103 217 3.392

-16 3 430.5 24 75 57.37 64 147 11.79 104 219 3.296

-15 5 406.7 25 77 54.89 65 149 11.38 105 221 3.203

-14 7 384.3 26 79 52.53 66 151 10.99 106 223 3.113

-13 9 363.3 27 81 50.28 67 153 10.61 107 225 3.025

-12 10 343.6 28 82 48.14 68 154 10.25 108 226 2.941

-11 12 325.1 29 84 46.11 69 156 9.902 109 228 2.86

-10 14 307.7 30 86 44.17 70 158 9.569 110 230 2.781

-9 16 291.3 31 88 42.33 71 160 9.248 111 232 2.704

-8 18 275.9 32 90 40.57 72 162 8.94 112 234 2.63

-7 19 261.4 33 91 38.89 73 163 8.643 113 235 2.559

-6 21 247.8 34 93 37.3 74 165 8.358 114 237 2.489

-5 23 234.9 35 95 35.78 75 167 8.084 115 239 2.422

-4 25 222.8 36 97 34.32 76 169 7.82 116 241 2.357

-3 27 211.4 37 99 32.94 77 171 7.566 117 243 2.294

-2 28 200.7 38 100 31.62 78 172 7.321 118 244 2.233

-1 30 190.5 39 102 30.36 79 174 7.086 119 246 2.174
0 32 180.9 40 104 29.15 80 176 6.859 120 248 2.117
1 34 171.9 41 106 28 81 178 6.641 121 250 2.061
2 36 163.3 42 108 26.9 82 180 6.43 122 252 2.007
3 37 155.2 43 109 25.86 83 181 6.228 123 253 1.955
4 39 147.6 44 111 24.85 84 183 6.033 124 255 1.905
5 41 140.4 45 113 23.89 85 185 5.844 125 257 1.856
6 43 133.5 46 115 22.89 86 187 5.663 126 259 1.808
7 45 127.1 47 117 22.1 87 189 5.488 127 261 1.762
8 46 121 48 118 21.26 88 190 5.32 128 262 1.717
9 48 115.2 49 120 20.46 89 192 5.157 129 264 1.674

10 50 109.8 50 122 19.69 90 194 5 130 266 1.632
11 52 104.6 51 124 18.96 91 196 4.849
12 54 99.69 52 126 18.26 92 198 4.703
13 55 95.05 53 127 17.58 93 199 4.562
14 57 90.66 54 129 16.94 94 201 4.426
15 59 86.49 55 131 16.32 95 203 4.294
16 61 82.54 56 133 15.73 96 205 4.167
17 63 78.79 57 135 15.16 97 207 4.045
18 64 75.24 58 136 14.62 98 208 3.927
19 66 71.86 59 138 14.09 99 210 3.812

32808001101 71

Specifications subject to change without notice.

APPENDIX 3

Table 22—ΔT(°F)=9ΔT(°C)/5

°C °F °C °F °C °F °C °F °C °F

-5 23 21 69.8 51 123.8 82 179.6 113 235.4

-4 24.8 22 71.6 52 125.6 83 181.4 114 237.2

-3 26.6 23 73.4 53 127.4 84 183.2 115 239

-2 28.4 24 75.2 54 129.2 85 185 116 240.8

-1 30.2 25 77 55 131 86 186.8 117 242.6

0 32 25.5 77.9 56 132.8 87 188.6 118 244.4

0.5 32.9 26 78.8 57 134.6 88 190.4 119 246.2

1 33.8 27 80.6 58 136.4 89 192.2 120 248

1.5 34.7 28 82.4 59 138.2 90 194 121 249.8

2 35.6 29 84.2 60 140 91 195.8 122 251.6

2.5 36.5 30 86 61 141.8 92 197.6 123 253.4

3 37.4 31 87.8 62 143.6 93 199.4 124 255.2

3.5 38.3 32 89.6 63 145.4 94 201.2 125 257

4 39.2 33 91.4 64 147.2 95 203 126 258.8

4.5 40.1 34 93.2 65 149 96 204.8 127 260.6

5 41 35 95 66 150.8 97 206.6 128 262.4

6 42.8 36 96.8 67 152.6 98 208.4 129 264.2

7 44.6 37 98.6 68 154.4 99 210.2 130 266

8 46.4 38 100.4 69 156.2 100 212 131 267.8

9 48.2 39 102.2 70 158 101 213.8 132 269.6

10 50 40 104 71 159.8 102 215.6 133 271.4

11 51.8 41 105.8 72 161.6 103 217.4 134 273.2

12 53.6 42 107.6 73 163.4 104 219.2 135 275

13 55.4 43 109.4 74 165.2 105 221 136 276.8

14 57.2 44 111.2 75 167 106 222.8 137 278.6

15 59 45 113 76 168.8 107 224.6 138 280.4

16 60.8 46 114.8 77 170.6 108 226.4 139 282.2

17 62.6 47 116.6 78 172.4 109 228.2 140 284

18 64.4 48 118.4 79 174.2 110 230 141 285.8

19 66.2 49 120.2 80 176 111 231.8 142 287.6

20 68 50 122 81 177.8 112 233.6 143 289.4

Copyright 2018

CMNA 1025 Cobb Place Blvd NW, Kennesaw, GA 30152

72 32808001101

Specifications subject to change without notice.