Carrier 40MKCF, 24AHA4, 124ANS, 40MKQF, 25HHA4 Service Manual

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40MKCF / 24AHA4 / 124ANS 40MKQF / 25HHA4 / 224ANS Under Ceiling/Floor Cons ole D uctless System Sizes 18 to 54

Service Manual

TABLE OF CONTENTS

PAGE

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

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

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

STANDARD FEATURES AND ACCESSORIES 3...........

SPECIFICATIONS 4..................................

DIMENSIONS 6--7...................................

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

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

POWER AND CONNECTING CABLES 10................

CONNECTION DIAGRAMS 11.........................

WIRING DIAGRAMS 12...............................

REFRIGERATION CYCLE DIAGRAMS 16................

REFRIGERANT LINES 17.............................

SYSTEM EVACUATION AND CHARGING 17.............

SEQUENCE OF OPERATION 18........................

TROUBLESHOOTING 19..............................

DISSASSEMBLY 26..................................

APPENDIX 30.......................................

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 instructions or manuals, be alert to the potential for personal injury. Understand these signal words: DANGER, WARNING, and CAUTION. 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.

. When you see this symbol on the unit and in

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

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 MK family of air conditioners and heat pumps. Section 2 of this manual is an appendix with data required to perform troubleshooting. Use the Table of Contents to locate a desired topic.

MODEL / SERIAL NUMBER NOMENCLATURES

INDOOR UNIT

--- ---

40= FAN COIL UNIT

40 MK 318

BCF

MK =MODEL

SYSTEM TYPE C = COOLING ONLY Q=HEATPUMP

MAXIMUM NUMBER OF FAN COIL UNITS THAT CAN BE CONNECTED TO THE OUTDOOR UNIT B=1:1

NOMINAL CAPACITY 18 = 1--- 1/2 TONS 24 = 2 TONS 30 = 2 -- - 1/2 TONS 34 = 2 -- - 5/6 TONS 36 = 3 TONS 48 = 4 TONS 54 = 4 1/2 TONS

01 15

VOLTAGE 3 = 208/230---1---60

NOT USED

INDOOR FAN COIL TYPE

F= UNDER CEILING --- FLOOR CONSOLE

00001

Week of Manufacture

Year of Manufacture

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.

Serial Number

Manufacturing Site

STANDARD FEATURES AND ACCESSORIES

Table 1—Standard Features and Accessories

Ease Of Installation

Indoor and Outdoor Compact Size S Outdoor Unit Wall Mounting Kit A Outdoor Unit Stacking Kit A Indoor Mounting Bracket S

Comfort Features

Convertible Under Ceiling -- Floor Console S

Microprocessor Controls S

Wireless Remote Control S Automatic Air Sweep S Air Direction Control S Auto Restart Function S Cold Blow Protection On Heat Pumps S

Turbo Mode S Silence Mode S Follow Me S

Energy Saving Features

Sleep Mode S Stop/Start Timer S

46 °F Heating Mode (Heating Setback) S

Safety And Reliability

3 Minute Time Delay For Compressor S Over Current Protection For Compressor S Crankcase Heater (standard on sizes 30 and 36 Heat Pump) A Indoor Coil Freeze Protection S Indoor Coil High Temperature Protection On Heat Pumps S Condenser High Temperature Protection On Heat Pumps S Accumulator On Heat Pumps S

Ease Of Service And Maintenance

Cleanable Filters S Diagnostics S Liquid Line Pressure Taps S Suction And Discharge Pressure Taps S

Application Flexibility

Low Ambient Controls (--20F) (-- 28.9C) A 3--Phase on sizes 34 & 54 (AC) and 36 & 48 (HP) S Wind Baff le s A Condensate Pumps A Wired Controls A

Legend

SStandard A Accessory

Table 2—Optional Accessories

Ordering No. Descriptions For M odels

KSACN0101AAA Wired Remote Control All Sizes

53DS--900 ---- --118 Condensate Pump (230v) All Sizes

KSALA0801AAA

KSALA0901AAA

KAACH1401AAA Crankcase Heater 24AHA4 Sizes 18 -- 36 (208/230V)

KAACH1501AAA Crankcase Heater 24AHA4 Size 36 (460V--3)

KAACH1201AAA Crankcase Heater 24AHA4 Size 48 (208/230V)

KAACH1901AAA Crankcase Heater 24AHA4/25HHA4 Size 48 (460V--3)

KAACH1601AAA Crankcase Heater 25HHA4 Size 48 (208/230V)

KAAWS0101AAA

KHAIR0201AAA

KSAHS1501AAA

53DS--900 ---- --087 Wind Baffle 24AHA4 Sizes 18 & 24

53DS--900 ---- --071 Wind Baffle

53DS--900 ---- --088 Wind Baffle 25HHA4 Size 48

53DS--900 ---- --075 Stacking Kit 24 AHA4 Sizes 18, 24

53DS--900 ---- --076 Stacking Kit 24 AHA4 Sizes 30 -- 48

53DS--900 ---- --077 Wall Mount Kit 24AHA4 Sizes 18, 24

53DS--900 ---- --078 Wall Mount Kit 24AHA4/25HHA4 Sizes 30 -- 48

KAALS0201LLS

KHALS0401LLS

Low Ambient Control (for cooling -- 20F)

Winter Start Kit (for low ambient on cooling only systems)

Isolation Relay (Required when using Low Ambient cooling with HP)

Hard Start Kit (Capacitor & Relay )

Liquid Line Solenoid for Cooling Only

Liquid Line Solenoid for Heat Pump

24AHA4/25HHA4 (208/230V)

24AHA4 (460V--3)

24AHA4 All Sizes

25HHA4 All Sizes

24AHA4/25HHA4 (208/230V--1)

24AHA4 Sizes 30 -- 48 / 25HHA4 Sizes 30 & 36

24AHA4 All Sizes -- Required for Long Line Applications

25HHA4 All Sizes -- Required for Long Line Applications

INDOOR UNIT ACCESSORIES

Condensate Pump

On ductless fan coils, the condensate pump has a lift capability of 12 ft. (3.6 m) on the discharge side with the pump mounted in the fan coil or 6 ft. (1.8 m) on the suction side if the pump is remote mounted. The pump is recommended when adequate drain line pitch cannot be provided, or when the condensate must move up to exit.

Wired Remote Controller

For applications where the use of wireless remote control is not desired, the MK units can be controlled by means of a wired wall--mounted control with an LCD display.

A07892

Fig. 1 – Condensate Pump Accessory

Fig. 2 – Wall Mounted Control with LCD Display

SPECIFICATIONS

Table 3—Specifications Cooling Only Under Ceiling Systems

Size 18 24 30 34 34 34 54 54 54

Outdoor Model

System

Indoor Model 40MKCB18F-- --3 40MKCB34F--- -3 40MKCB34F--- -3 40MKCB 34F----3 40MKCB 34F--- -3 40MKCB34F--- -3 40MKCB54F--- -3 40MKCB54F-- -- 3 4 0 MK C B 5 4 F -- -- 3

Energy Star NO NO NO NO NO NO NO NO NO

Cooling Rated

Performance

Operating

Refrigeran t

Compressor

* Liquid line needs to be insulated

Capacity

SEER 14 14 14 14 14 14 14 14 14

EER 12.2 12.2 12.2 12.2 12.2 12.2 11 .7 11.7 11.7

Wireless Remote Controller

(F/ C Convertible )

Controls

Wire d Remote Controller (

_F/_C Convertibl e)

Cooling Outdoor DB Min -- Max

Range

Cooling Indoor DB Min --Max

Total Piping Length Ft. 200’ 200’ 200’ 200’ 200’ 200’ 200’ 200’ 200’

Drop (OD above ID) Ft. 200’ 200’ 200’ 200’ 200’ 200’ 200’ 200’ 200’

Lift (OD below ID) Ft. 65’ 65’ 65’ 65’ 65’ 65’ 65’ 65’ 65’

Outdoor Pipe Conne ction Size -Liquid

Outdoor Pipe

Piping

Conne ction Size -Suction

Indoor Pipe Conne ction Size -Liquid

Indoor Pipe Conne ction Size -Suction

Type R-- 410A R--410A R-- 410A R--410A R-- 410A R--410A R-- 410A R--410A R--410A

Design Pressure PSIG 550 550 550 550 550 550 550 550 550

Mete ring De vice Type B Accurat or

Charge Lb. 6.4 6.5 8.6 8.9 8.9 8.9 9 9 9

Face Area Sq. Ft. 7.3 7.3 12.1 12.1 12.1 12.1 12.1 12.1 12.1

No. R ows 2 2 2 2 2 2 2 2 2

Outdoor

Coil

Fins per inch 20 20 20 20 20 20 20 20 20

Circuits 3 3 3 3 3 3 3 3 3

Face Area (sq. ft.) Sq. Ft. 2.5 4.1 4.1 4.1 4.1 4.1 4.35 4.35 4.35

No. R ows 3 3 3 3 3 3 4 4 4

Indoor

Coil

Fins per inch 19 19 19 19 19 19 19 19 19

Circuits 7 8 8 8 8 8 6 6 6

Type Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll

Model

Outdoor Volta ge, Phase, Cycle

Indoor Voltage, Phase, Cycle

Power Supply Indoor a nd outdoor uni ts have dedic ated power supply

Electrical

MCA (Outdoor) A. 11.8 14.1 18.3 18.8 12.5 7.6 24.3 18.3 8.4

MOCP - - F use Rating (Outdoor)

MCA (Indoor) A. 3 3 3 3 3 3 3 3 3

MOCP - - F use Rating (Indoor)

Unit Width In. 36.9 36.9 44.5 44.5 44.5 44.5 44.5 44.5 44.5

Unit Height In. 31.1 31.1 37.1 37.1 37.1 37.1 37.1 37.1 37.1

Outdoor

Unit Depth In. 14.6 14.6 17.1 17.1 17.1 17.1 17.1 17.1 17.1

Net Weight Lbs. 146 148 183 184 184 184 213 213 213

Airflow CFM 1,285 1,285 1,900 2,615 2,615 2,615 2,615 2,615 2,615

Unit Width In. 42.0 65.0 65.0 65.0 65.0 65.0 65.0 65.0 65.0

Unit Height In. 9.3 9.3 9.3 9.3 9.3 9.3 9.3 9.3 9.3

Unit Depth In. 26.6 26.6 26.6 26.6 26.6 26.6 26.6 26.6 26.6

Net Weight Lbs. 59.7 91.9 91.9 91.9 91.9 91.9 98.8 98.8 98.8

Number of Fan Speeds 3 3 3 3 3 3 3 3 3

Indoor

Airflow (lowest to highest )

Sound Pressure (lowest to hi ghest)

Air throw Data Ft. 26 29 29 29 29 29 29 29 29

** Refer to Ductless Split System Long Line Guide for additional information. Long Line accessories required beyond 80 ft. (24.4 m).

24AHA418A003

124ANS018000

Btu/h 17,100 24,000 28,600 33,200 33,200 33,200 53,000 53,000 53,000

Standard Standard Standard Standard Standard Standard Standard Sta ndard Standard

Optional Optional Optional Optional Optional Optional Optional Optional O ptiona l

24AHA424A003

124ANS024000

24AHA430A003

124ANS030000

24AHA436A003

124ANS036000

_F 55~125 ( -- 20_F w / L ow--Ambient Kit)

64~90 64~90 64~90 64~90 64~90 64~90 64~90 64~90 64~90

In. 3/8” 3/ 8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8”

In. 5/8” 3/ 4” 3/4” 7/8” 7/8” 7/8” 7/8” 7/8” 7/8”

In. 3/8” 3/ 8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8” 3/8”

In. 5/8” 3/ 4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4”

ZP16K6E-- PFV-- 130 ZP20K6E--PFV--130 ZP25K5E--PFV--130 ZP29K5E-- PFV-- 130 ZP29K5E-- TF5--130 ZP29K5E--TFD- -130 ZP40K6E--PFV--130 ZP40K6E--TF5--130 ZP40K6E--TFD-- 130

V/Ph/

208/230-- 1--60 208/230--1 -- 60 208/230-- 1--60 208/230--1 -- 60 208/230-- 3-- 60 460--3--60 208/230--1-- 60 208/230--3--60 460--3--60

V/Ph/

208/230-- 1--60 208/230--1 -- 60 208/230-- 1--60 208/230--1 -- 60 208/230-- 1-- 60 208/230-- 1--60 208/230-- 1-- 60 208/ 230--1--60 208/230--1--60

A. 20 25 30 30 20 15 40 30 15

A. 15 15 15 15 15 15 15 15 15

CFM 405/515/695 975/1335/1130 975/1335/1 130 975/1335/1 130 975/1335/1 130 975/1335/1 130 1310/1400/1470 1310/1400/1470 1310/1400/1470

dB(A) 42/ 48/53 50/52/55 50/52/55 50/52/55 50/52/55 50/52/55 55/57/59 55/57/59 55/57/59

CoolingOnlyOnly

24AHA436A005

124APS036000

24AHA436A006

124AES036000

24AHA448A003

124ANS048000

24AHA448A005

124APS048000

24AHA448A006

124AES048000

SPECIFICATIONS (CONT)

Table 4—Specifications Heat Pump Under Ceiling Systems

System

Performance

Controls

Operating

Range

Piping

Refrigerant

Outdoor

Coil

Indoor

Coil

Compressor

Electrical

Outdoor

Indoor

Size 30 36 36 36 48 48 48

Outdoor Model Indoor Model 40MKQB36F--3 40MKQB36F--3 40MKQB36F--3 40MKQB36F--3 40MKQB48F--3 40MKQB48F--3 40MKQB48F--3

Energy Star NO NO NO NO NO NO NO Cooling Rated

Capacity SEER 14 14 14 14 14 14 14 EER 11.5 11 11 11 11.7 11.7 11.7 Heating Rated

Capacity HSPF 8.2 8.2 8.2 8.2 8.2 8.2 8.2 COP W/W 4.1 4.1 4.1 4.1 3.8 3.8 3.8 Wireless Remote Controller

(°F/°C Conv ertible) Wired RemoteController (°F/°C

Convertible) Cooling OutdoorDB

Min -Max Heating OutdoorDB

Min -Max Cooling IndoorDB

Min -Max Heating IndoorDB

Min -Max Total Piping Length Ft. 200' 200' 200' 200' 200' 200' 200' Drop (OD above ID) Ft. 200' 200' 200' 200' 200' 200' 200' Lift (ODbelow ID) Ft. 65' 65' 65' 65' 65' 65' 65' Outdoor Pipe

Connection Size Liquid

Outdoor Pipe Connection Size Suction

Indoor Pipe Connection Size Liquid

Indoor Pipe Connection Size Suction

Type R-410A R-410A R-410A R-410A R-410A R-410A R-410A DesignPressure PSIG 550 550 550 550 550 550 550 MeteringDevice Type B Accurator Charge Lb. 12.1 12.3 12.3 12.3 10.95 10.95 10.95 Face Area Sq. Ft. 12.1 12.1 12.1 12.1 14.1 14.1 14.1 No. Rows 2 2 2 2 2 2 2 Fins perinch 20 20 20 20 20 20 20 Circuits 6 5 5 5 6 6 6 Face Area(sq. ft.) Sq. Ft. 4.4 4.4 4.4 4.4 4.4 4.4 4.4 No. Rows 4 4 4 4 4 4 4 Fins perinch 19 19 19 19 19 19 19 Circuits 6 6 6 6 6 6 6 Type Scroll Scroll Scroll Scroll Scroll Scroll Scroll Model ZP24K5E-PFV-130 ZP29K5E-PFV-130 ZP29K5E-TF5-130 ZP29K5E-TFD-130 ZP42K5E-PFV-130 ZP42K5E-TF5-130 ZP42K5E-TFD-130 Outdoor Voltage,

Phase, Cycle Indoor Voltage,

Phase, Cycle Power Supply Indoor andoutdoor units havededicated power supply MCA (Outdoor) A. 17.2 19 12.8 7.6 28.8 18.6 8.6 MOCP -Fuse Rating

(Outdoor) MCA (Indoor) A. 3 3 3 3 3 3 3 MOCP -Fuse Rating

(Indoor) Unit Width In. 44.5 44.5 44.5 44.5 44.5 44.5 44.5 Unit Height In. 37.1 37.1 37.1 37.1 43.1 43.1 43.1 Unit Depth In. 17.1 17.1 17.1 17.1 17.1 17.1 17.1 Net Weight Lbs. 196 197 197 197 246 246 246 Airflow CFM 2,615 2,615 2,615 2,615 2,785 2,785 2,785 Unit Width In. 65.0 65.0 65.0 65.0 65.0 65.0 65.0 Unit Height In. 9.3 9.3 9.3 9.3 9.3 9.3 9.3 Unit Depth In. 26.6 26.6 26.6 26.6 26.6 26.6 26.6 Net Weight Lbs. 98.8 98.8 98.8 98.8 98.8 98.8 98.8 No. ofFan Speeds 3 3 3 3 3 3 3 Airflow(lowest to

highest) Sound Pressure

(lowest tohighest) Air throwData Ft. 29 29 29 29 29 29 29

V/Ph/Hz 208/230-1-60 208/230-1-60 208/230-3-60 460-3-60 208/230-1-60 208/230-3-60 460-3-60

V/Ph/Hz 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60 208/230-1-60

25HHA430A003 224ANS030000

Btu/h 29,000 34,200 34,200 34,200 46,400 46,400 46,400

Standard Standard Standard Standard Standard Standard Standard

Optional Optional Optional Optional Optional Optional Optional

°F 55~125 (-20°F w / Low-AmbientKit)

°F 17~ 75 17~75 17~75 17~75 17~75 17~75 17~75

°F 64~ 90 64~90 64~90 64~90 64~90 64~90 64~90

°F 32~ 80 32~80 32~80 32~80 32~80 32~80 32~80

In. 3/8" 3/8" 3/8" 3/8" 3/8" 3/8" 3/8"

In. 3/4" 7/8" 7/8" 7/8" 7/8" 7/8" 7/8"

In. 3/8" 3/8" 3/8" 3/8" 3/8" 3/8" 3/8"

In. 3/4" 3/4" 3/4" 3/4" 3/4" 3/4" 3/4"

A. 30 30 20 15 50 30 15

A. 15 15 15 15 15 15 15

CFM 1310/1400/1470 1310/1400/1470 1310/1400/1470 1310/1400/1470 1310/1400/1470 1310/1400/1470 1310/1400/1470

dB(A) 55/57/59 55/57/59 55/57/59 55/57/59 55/57/59 55/57/59 55/57/59

25HHA436A003 224ANS036000

25HHA436A005 224APS036000

HEAT PUMP

25HHA436A006 224AES036000

25HHA448A003 224ANS048000

25HHA448A005 224APS048000

25HHA448A006 224AES048000

* Liquid line needs to be insulated

** Refer to Ductless Split System Long Line Guide for additional information. Long Line accessories required beyond 80 ft. (24.4 m).

DIMENSIONS -- INDOOR

Unit:

Bracket:

Hook

Fig. 3 – 40MKCB**F, 40MKQB**F Unit and Bracket Dimensions

Table 5—Dimensions Indoor

Indoor UnitSize

BTU/Hr

18K 9.3 (235) 42.0 (1068) 26.6 (675) 59.7 (27.1)

24K - 34K 9.3 (235) 65.0 (1650) 26.6 (675) 91.9 (41.7)

54K 9.3 (235) 65.0 (1650) 26.6 (675) 98.8 (44.8)

30K - 48K 9.3 (235) 65.0 (1650) 26.6 (675) 98.8 (44.8)

Bracket

18K AC - 38.7 (983) 8.7 (220) -

24K - 54KAC/HP - 61.6 (1565) 8.7 (220) -

Height (H)

in (mm)

Width (W)

in (mm)

Depth (D)

in (mm)

Operating Weight

lb (kg)

A0150266

DIMENSIONS -- OUTDOOR

Fig. 4 – Outdoor Unit Dimensions

Table 6—Dimensions Indoor

Dimensions in (mm)

UNIT A B C D E F G H J K L M N P

31.1

36.9

Cooling

Only

Heat

Pump

24AHA418

24AHA424

24AHA430

24AHA436

24AHA448

25HHA430

25HHA436

25HHA448

(791)

31.1

(791)

37.1

(943)

37.1

(943)

37.1

(943)

37.1

(943)

37.1

(943)

43.1

(1095)

(938)

36.9

(938)

44.5

(1130)

44.5

(1130)

44.5

(1130)

44.5

(1130)

44.5

(1130)

44.5

(1130)

14.6

(370)16(406)

14.6

(370)16(406)

17.1

(433)

17.1

(433)

17.1

(433)

17.1

(433)

17.1

(433)

17.1

(433)

18.4

(468)

18.4

(468)

18.4

(468)

18.4

(468)

18.4

(468)

18.4

(468)

23.4

(595)

23.4

(595)

30.5

(775)

30.5

(775)

30.5

(775)

30.5

(775)

30.5

(775)

30.5

(775)

17.2

(437)

17.2

(437)

19.6

(498)

19.6

(498)

19.6

(498)

19.6

(498)

19.6

(498)

19.6

(498)

23.1

(587)

23.1

(587)

29.1

(740)

29.1

(740)

29.1

(740)

29.1

(740)

29.1

(740)

35.1

(892)

NOTE: Dimensions shown in feet--inches. Dimensions in ( ) are millimeters.

28.1

(713)13(330)

28.1

(713)14(356)

34.1

13.7

(865)

(348)

34.1

13.7

(865)

(348)

34.1

14.5

(865)

(368)

34.1

13.7

(865)

(348)

34.1

13.7

(865)

(348)

40.1

14.5

(1018)

(368)

6.6

(168)

6.8

(171)

8.1

(206)

8.1

(206)

8.5

(216)

8.1

(206)

8.1

(206)

8.5

(216)

11.3

(286)

11.6

(295)

15.9

(403)

15.9

(403)

18.9

(479)

15.9

(403)

15.9

(403)

18.9

(479)

0.6

(16)

0.8

(19)

0.8

(19)

0.9

(22)

0.9

(22)

0.8

(19)

0.9

(22)

0.9

(22)

2.9

(73)

2.9

(73)

3.4

(86)

3.4

(86)

3.4

(86)

3.4

(86)

3.4

(86)

3.4

(86)

5.8

(148)

5.8

(148)

6.4

(162)

6.4

(162)

6.4

(162)

5.5

(140)

5.5

(140)

5.5

(140)

OPERATING

WEIGHT Ibs. (kg)

146 (66)

148 (67)

183 (83)

184 (83)

213 (97)

196 (89)

197 (89)

246

(112)

CLEARANCES -- INDOOR

≥35mm

≥ 35mm

CLEARANCES -- OUTDOOR

≥ 35mm

Fig. 5 – 40MKCB**F, 40MKQB**F Unit Clearance

Air-inlet

≥1000mm

A0150267

Air-outlet

Fig. 6 – Outdoor Unit Clearance

Table 7—Outdoor Clearances

UNIT Coil Facing Wall -- in. (mm) Fan Facing Wall -- in. (mm)

A 24 (610) 24 (610) B 24 (610) 24 (610)

C 20 (508) 6 (152) D 6 (152) 8 (203)

E 6 (152) 20 (508)

A08436

ELECTRICAL DATA

Table 8—24AHA4/124ANS Electrical Data

UNIT SIZE -- --

voltage,series

1 8 -- -- 3 0 2 4 -- -- 3 0 62.9 10.9 0.5 14.1 25 3 0 -- -- 3 0 73 14.1 0.7 18.3 30 3 6 -- -- 3 0 77 14.1 1.2 18.8 30 4 8 -- -- 3 0 124 18.5 1.2 24.3 40 3 6 -- -- 5 0 4 8 -- -- 5 0 83.1 13.7 1.2 18.3 30 3 6 -- -- 6 0 4 8 -- -- 6 0 41 6.2 0.6 8.4 15

UNIT SIZE -- --

voltage,series MAX MIN LRA RLA FLA

3 0 -- -- 3 0 3 6 -- -- 3 0 77 14.2 1.2 19 30 4 8 -- -- 3 0 117 21.8 1.45 28.8 50 3 6 -- -- 5 0 4 8 -- -- 5 0 83.1 13.7 1.45 18.6 30 3 6 -- -- 6 0 4 8 -- -- 6 0 41 6.2 0.8 8.6 15

Indoor Unit Size

BTU/Hr

18K 208--230 --1--60 187 253 0.71 1 15

24K -- 34K 208 --230-- 1 --60 187 253 0.7x2 3 15

54K 208--230 --1--60 187 253 0.95 x 2 3 15

V/PH

208/230/1 253 197

208/230/3 253 197

460/3 506 414

V/PH

208/230/1 253 197

208/230/3 253 197

460/3 506 414

V--Ph--Hz

OPER VOLTS* COMPR FAN

MCA

MAX MIN LRA RLA FLA

56.3 9 0.5 11.8 20

71 9 1.2 12.5 20

38 5.6 0.6 7.6 15

Table 9—25HHA4/224ANS Electrical Data

OPER VOLTS* COMPR FAN

MCA

64 12.8 1.2 17.2 30

71 9.3 1.2 12.8 20

38 5.6 0.6 7.6 15

Table 10—40MKCB**F Electrical Data

Voltage Range Fan Power

Min (V) Max (V) FLA (A) MinCktAmp(A)

MAX FUSE**

CKT BRK

AMPS

MAX FUSE**

CKT BRK

AMPS

Max Fuse CB Amp

(A)

Table 11—40MKQB**F Electrical Data

Indoor Unit Size

BTU/Hr

30K-- 48K 208 --230--1 -- 60 187 253 0.95 x2 3 15

LEGEND FLA --- F u l l L o a d A m p s H A C R --- Heating, Air Conditioning, Refrigeration L R A --- Locke d Rotor Amps N E C --- National Electrical Co de RLA --- RatedLoadAmps(compressor)

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

**T i m e --- De l ay f us e.

Complies with 2007 requirements of ASHRAE Standards 90.1

V--Ph--Hz

Min (V) Max (V) FLA (A)

Voltage Range Fan Power

Min Ckt Amp

(A)

Max Fuse CB

Amp (A)

POWER AND CONNECTING CABLES -- FIELD SUPPLIED

Recommended Connection Method for Power and Communication Wiring (To minimize communication wiring interference)

Power

The main power is supplied to both, the indoor and the outdoor units. The field supplied connecting cable consists of three (3) wires. Two wires are high voltage AC power and one is a ground wire.

Consult your local building codes and the NEC (National Electrical Code) or CEC (Canadian Electrical Code) for special requirements.

All wires must be sized per NEC or CEC 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.

Per caution note, only copper conductors with a minimum 300 volt rating and 2/64--inch thick insulation must be used.

Communication Wiring:

A separate shielded copper conductor only, with a minimum 300 volt rating and 2/64--inch thick insulation, must be used as the communication wire from the outdoor unit to the indoor unit. To minimize voltage drop of the communication wire, use the wire size and maximum lengths shown in Table 12.

Wiring:

Table 12—Maximum Lengths

Wire Size Length ft. (m)

18AWG 50 ft. (15 m) 16AWG 50ft. (15 m) to 100 ft. (30 m)

EQUIPMENT DAMAGE HAZARD

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

S Wires should be sized based on NEC and local codes.

S Use copper conductors only with a minimum 300 volt

rating and 2/64--inch thick insulation.

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 indoor unit to outdoor unit.

S Every wire must be connected firmly. Loose wiring

may cause terminal to overheat or result in unit malfunction. A fire hazard may also exist. Therefore, be sure all wiring is tightly connected.

S No wire should be allowed to touch 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

hole in the conduit panel.

CAUTION

CONNECTION DIAGRAMS

Fig. 7 – 40MKCB**F/24AHA4 or 124ANS Connecting Diagram

A150280

Fig. 8 – 40MKQB**F / 25HHA4 or 224ANS Connecting Diagram

NOTE:

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

2. All connections bet ween the indoor and outdoor units must be as shown in Fig. 7 and 8. The connect ions are se nsitive to polarity and results in a fault code.

A150282

WIRING DIAGRAMS

FACTO RY SETTING

Mode

CEILING

FLOOR

FACTO RY SETTING

Notes:

1.T o be wire d in acc ordance with Na tional E lectric N.E .C . and lo cal c odes.

2.U se C opper conductors only. Use c onductors s uitable for a t least 7 5°C (1 67°F ).

3. If a ny of the o riginal wires, a s supplied must be replace d, use the s ame o r equiva lent wire.

Fig. 9 – 40MKCB**F Wiring Diagram

Le gend:

................Model specic fea ture

C AP : C apac itor

Live wire L 1/Null line L2

C N 1: CN 2/3: Transformer C N 25: C ontrols signal interface( C) C N 7: S enso r C N 20: N etwork module interface C N 12: V ertical s wing motor inter face C N 13: horiz ontal s wing motor i nterface C N 10: D isplay board in terface C N 15: C ompres sor signal in terface C N 11: Water level d etection sw itch C N 16: Motor i nterface R T1: R oom tempe rature s enso r R T2: P ipe tempera ture s ensor T3/4 :Tra ns former G M1/3: L evel s wing motor G M 2: V ertical s wing motor XS/XP : Connectors

24V

interfac e

interface

FAN2

WHITE

CAP2

OUTDOOR UNIT SCHEMATIC DIAGRAM

Fig. 10 – 24AHA4/124ANS Wiring Diagram 208/230V 1 Phase

Fig. 11 – 24AHA4/124ANS Wiring Diagram 208/230 -- 460V 3 Phase

FACTO RY SETTING

MODE

FLOOR

Legen d:

................Model spec ic fe ature

CAP: Capac itor CN 1:

Live w ire L1 /Null line L2 CN 2/ 3: Tr ansfor mer CN 25 :Contr ols signal interface(R /C) CN 7: Sens or CN 20 : Netw ork module interface CN 12 : Ver tical s wing motor i nterface CN 13 : horiz ontal s wing motor interfa ce CN 10 : Disp lay board in terfac e CN 15 : Sign al inte rface( Y/O) CN 1 1: Wa ter level dete ction s witch CN 16 : Moto r interface RT1: Room temp erature sens or RT2: Pipe t empe rature senso r T3/4 : Trans forme r GM1/3 : Leve l swin g motor

GM 2: Vertical s wing motor XS/XP : Con nectors

24V

interface

MODE

FLOOR

FACTO RY SETTING

Notes :

1.T o be wired in acco rdanc e with National Electr ic N.E .C. a nd loc al codes.

2.Use Copp er con ductors onl y. Use c onductors s uitable for at lea st 75° C(167 °F).

3. If a ny of the original wires , as s upplied must be replace d, use the s ame o r equ ivalent wire.

Fig. 12 – 40MKQB**F Wiring Diagram

OUTDOOR UNIT SCHEMATIC DIAGRAM

Fig. 13 – 25HHA4/224ANS Wiring Diagram 208/230V 1 Phase

Fig. 14 – 25HHA4/224ANS Wiring Diagram 208/230V 3 Phase

Fig. 15 – 25HHA4/224ANS Wiring Diagram 460V 3 Phase

REFRIGERAT I ON CYCLE DIAGRAMS

FIELD

PIPING

FLARE CONNECTION

COOLING EXPANSION DEVICE

TINU ROODTUOTINU ROODNI

LIQUID

SERVICE VALVE

HEAT EXCHANGER (EVAPORATOR)

FLARE CONNECTION

COOLING EXPANSION DEVICE

SERVICE VALVE W/GAUGE PORT

SUCTION LINE

FIELD

PIPING

Fig. 16 Cooling Only

FIELD

PIPING

LIQUID HTG

SERVICE VALVE

COMPRESSOR

HEATING EXPANSION DEVICE

HEAT EXCHANGER (CONDENSER)

TINU ROODTUOTINU ROODNI

LIQUID

TWO PHASE

HEAT EXCHANGER (CONDENSER)

FLARE CONNECTION

SERVICE VALVE W/ GAUGE PORT

FIELD

PIPING

Fig. 17 Heat Pumps

SUCTION

ACCUMULATOR

SUCTION DISCHARGE

COMPRESSOR

REVERSING

VALV E

COOLING HEATING

REFRIGERANT LINES

General refrigerant line sizing:

3. The outdoor units are shipped with a full charge of R410A refrigerant. All charges, line sizing, and capacities are based on runs of 25 ft. (7.6 m). For runs over 25 ft. (7.6 m), refer to the Residential Long Line Guide.

4. Minimum refrigerant line length between the indoor and outdoor units is 10 ft. (3 m).

5. Refrigera nt 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 6--in (152 mm) vert ical rise to the service valve s to preve nt re frige r ant migrat ion.

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

7. Special consideration should be give n to isolating interconnecting tubing from the building structure. Isolate the tubing so that vibration or noise does not transmit into the structure.

IMPORTANT: Both refrigerant lines must be insulated

separately.

S The following maximum lengths are allowed:

Table 13 – Maximum Refrigerant Line Lengths

Unit Size

18K--56K 250 (76.2) 65 (19.8) 200 (61)

Note: For lengths greater than 25 ft. (7.6 m), refer to the Residential

Long Line Guide.

*Maximum actual length not to exceed 200 ft. (61 m). Total equivalent

length accounts for losses due to elbows or fitting. See the Long Line Guideline for details.

Max Line

Length* ft(m)

S The following are the piping sizes.

Indoor Units Outdoor Units

40MKCB18F----3

40MKCB34F----3

40MKCB54F----3

40MKQB36F----3

40MKQB48F----3

Note: Both lines need to be insulated using at least 1/2 inch closed

foam insulation.

Refrigerant Charge

System

Typ e

Cooling

Only

Heat

Pump

The above additional charge is required amount for line lengths up to

25 ft. (7.6 m). For line lengths exceeding 25 ft. (7.6 m), additional charge will be required. Refer to the Residential Long Line Guide.

24AHA418 124ANS018

24AHA424 124ANS024

24AHA430 124ANS030

24AHA436 124ANS036

24AHA448 124ANS048

25HHA430224A

NS030

25HHA436 224ANS036

25HHA448 224ANS048

Table 15 – Charge Requirements

Nominal Capacity

kBTU/Hr

018 24AHA418A003 124ANS018000 40MKCB18F-- --3 12

024 24AHA424A003 124ANS024000 40MKCB34F-- --3 12

030 24AHA430A003 124ANS030000 40MKCB34F-- --3 12

034 24AHA436A003/5/6 124ANS036000 40MKCB34F----3 8

054 24AHA448A003/5/6 124ANS048000 40MKCB54F----3 12

030 25HHA430A003 224ANS030000 40MKQB36C----3 11

036 25HHA436A003/5/6 224ANS036000 40MKQB36C-- --3 14

048 25HHA448A003/5/6 224ANS048000 40MKQB48C-- --3 11

Max Elevation

(ID over OD) ft( m)

Max Elevation

(OD o ver ID) ft (m)

Table14–PipeSizes

Indoor Unit Tube

Sizes (in)

Liquid Vap o r Liquid Vap o r Liquid Vap or

3/8

OutdoorUnit Indoor Unit

TXV Kit Tube

Sizes (in)

5/8

3/4 3/4 3/4

3/4 3/4 7/8

3/8

3/4 7/8 7/8

3/4 3/4 3/4

3/4 3/4 7/8

3/4 7/8 7/8

OutdoorUnit Tube

5/8

Size (in)

3/8

Chargeto

Sub--cooling

Delta fro m

Rating Plate

Val u e

5/8

Metering Device

The 40MKC(Q)*F unit uses a TXV. The outdoor unit uses a type B accurator. The cooling metering device is installed with the indoor unit, while the heating metering device is installed with the outdoor unit. One metering device is required for the cooling only system and two are required for the heat pump systems. Refer to Table 16 for a breakdown of each unit’s metering devices.

Table 16 – Metering Device

System Size

kBTU/hr

018 TXV - 024 TXV - 030 TXV TXV 0.055" 034 TXV - 054 TXV - 036 - TXV 0.063" 048 - TXV 0.073"

Cooling Only HeatPumps

40MKCB**C 40MKQB**C 25HHA4/224ANS

SYSTEM EVACUATION AND 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. The alternate triple evacuation method may be used if the procedure outlined below is followed. Always break a vacuum with dry nitrogen.

SYSTEM VACUUM AND CHARGE

Using Vacuum Pump

1. Completely tighten flare nuts A, B, C, D, connect manifold gage charge hose to a charge port of the low side service valve (see Fig. 18).

2. Connect charge hose to vacuum pump.

3. Fully open the low side of manifold gage (see Fig. 19).

4. Start the vacuum pump.

5. Evacuate using either deep vacuum or triple evacuation method.

6. After evacuation is complete, fully close the low side of manifold gage and stop operation of vacuum pump. Maintain a MICRON value of 500 MICRONS or less for 30 minutes to ensure a completely dry system.

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 char ge, up to the maximum allowable lengt h, as specified in the residential Long Line Applicat i on Guide.

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

9. Fully open service valves B and A.

10. Securely tighten caps of service valves.

Outdoor Unit

Service Valve

CAUTION

Refrigerant

Low Side

High Side

Fig. 18 Service Valve

Indoor Uni

A07360

500 microns

Low side valve

Charge hose

Manifold Gage

High side valve

Charge hose

Vacuum pump

EVACUATE

BREAK VACUUM WITH DRY NITROGEN

WAIT

EVACUATE

BREAK VACUUM WITH DRY NITROGEN

WAIT

EVACUATE

Low side valve

A07361

Fig. 19 Manifold

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. 20).

5000 4500 4000 3500 3000 2500 2000

MICRONS

1500 1000

500

01234567

MINUTES

LEAK IN SYSTEM

VACUUM TIGHT TOO WET

TIGHT DRY SYSTEM

A95424

Fig. 20 Deep Vacuum Graph

Triple Evacuation

Method

The triple evacuation method should only be used when vacuum pump is only capable of pumping down to 28 in. of mercury vacuum and system does not contain any liquid water. Refer to Fig. 21 and proceed as follows:

1. Pump system down to 500 MICRONS and allow pump to continue operating for an additional 15 minutes.

2. Close service valves and shut off vacuum pump.

3. Connect a nitrogen cylinder and regulator to system and open until system pressure is 2 psig.

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

5. Repeat this procedure as indicated in Fig. 21. System will then be free of any contaminants and water vapor.

CHECK FOR TIGHT, DRY SYSTEM

(IF IT HOLDS DEEP VACUUM)

RELEASE CHARGE INTO SYSTEM

A95425

Fig. 21 Triple Evacuation Method

SEQUENCE OF OPERATION

Interface

A wireless remote control, supplied with the unit, is the interface between the fan coil and the user. The wireless remote control has the following characteristics:

S Capable of displaying _Cand_F with _F being the default

setting. To change the default setting, refer to the Owner’s Manual.

S The remote control setpoint range is from 62_F(17_C) to

86_F(30_C) inch increments of 1_F(1_C).

S The wireless remote control has an operating range of 25 ft.

(7.62 m).

S The same remote control can be used to control more than one

unit.

S If the remote control is lost, damaged, or the batteries are

exhausted, the system can be operated by using the manual button (forced Auto) located on the front panel (see Fig. 22).

MANUAL

A150284

Fig. 22 Manual Button Location on Unit

TROUBLESHOOTING

This section provides the required flow charts to troubleshoot problems that may arise.

NOTE: Information required in the diagnoses can be found either on the wiring diagrams or in the appendix.

Required

The following tools are needed when diagnosing the units:

S Digital multimeter S Screw drivers (Phillips and straight head) S Needle--nose pliers

Recommended

Tools:

Steps

1. Refer to the diagnostic hierarchy charts below and determine the problem at hand.

2. Go to the chart listed in the diagnostic hierarchy and follow the steps in the chart for the selected problem.

For eas e of servic e, the indoor unit is equipped with diagnostic code display LEDs in the indoor unit s . This diagnosti c displa y is a combination of flashing LEDs on the display panel or the front of the unit. If possible, always check the diagnostic codes displayed on the indoor unit. Once a fai l ure occurs with the indoor unit in operation, the green LED on the indoor unit flashe s at interval s of 0.5 seconds.

The fault code is deduced from the number of times the green LED flashes, blocking unit operati on. Bet w een one fla sh cycle and the next one, a pause of 3 to 4 seconds el apses.

The diagnostic codes for the indoor units are listed in the appendix. Problems may occur that are not covered by a diagnostic code, however are covered by the diagnostic flow charts. These problems are typical air conditioning mechanical or electrical issues that can be corrected using standard air conditioning repair techniques.

INDOOR UNIT DIAGNOSTIC

CODES

Table 17 – Fault Codes

No. Malfunction Running lamp Timer lamp Defrosting lamp Alarm lamp

Open or short circuit of

T1 temperature sensor

Open or short circuit of

T2 temperature sensor

3 Indoor EEPROM

4 Water--level alarm X X X

Refrigerant leakage

detection

NOTE: O (on) X(off) ☆(flash at 5Hz) ◎(flash at 0.5Hz)

☆

☆ ☆

☆

X X E2

X X X E3

X X E7

☆

X X

☆

For problems requiring measurements at the control boards please note the following:

For Heat Pump Units

Only:

1. Always disconnect the main power.

2. When possible check the outdoor board first.

3. Start by removing the outdoor unit top cover.

4. Reconnect the main power

5. Probe the outdoor board inputs and outputs with a digital multi--meter referring to the wiring diagrams.

6. Connect the red probe to hot signal and the black probe to the ground or negative.

7. Note that some of the DC voltage signals are pulse and

ForCoolingonlyandHeatPumps

1. If it is necessary to check the indoor unit board you must start by disconnecting the main power.

2. Next remove the front cover of the unit and then control box cover.

3. Carefully remove the indoor board from the control box, place it face up on a plastic surface (not metal).

4. Reconnect the main power and repeat steps 5, 6, and 7.

5. Disconnect main power before reinstalling board to avoid shock hazard and board damage.

gives continuously variable readings.

Display

(digital tube)

1. --- Open or short circuit of T1 or T2 temperature sensor --- diagnosis and solution

Check th

Error Code E1 Malfunction conditions Indoor room temperature T1 and sensor evaporator temperature sensor T2 is abnormal

Check the connecons

between temperature

sensor and PCB. Are the

sensor an

e connecons

etween temperature

PCB re the

connecons good?

onnecons goo

Yes

Measure the resistance value

easurethe resistance value

of the sensor via Appendix 1

the sensor via Appendix

Is it normal?

s it norma

Yes

Replace the indoor PCB

Rep

ace the indoor PCB

Correct the connecons.No

orrect the connecons

Replace the sensor.

2. --- EEPROM parameter error --- diagnosis and solution

Error Code E7 Malfunction conditions Indoor PCB main chip does not receive feedback from EEPROM chip.

Possible Causes

Troubleshooting:

• Installation mistake

• Defective PCB

Shut off the power supply and

turn it on 5 seconds later. Is it

still displaying the error code?

Yes

If the EEPROM chip is welded on main PCB, replace the main PCB directly. Otherwise, check

Correct the connection. whether the EEPROM chip is plugged into main PCB well.

Yes

Replace the main PCB.

A14480

3 . --- W a t e r --- l e v e l a l a r m --- d i a gn os is a n d s ol u t io n

ill

lved

ill displayi

Error Code E8 Malfunction conditions If the sampling voltage is not 5V, the LED displays the failure.

Possible Causes

• Wiring mistake

• Water--- level switch faulty

•Waterpumpfaulty

• Indoor PCB faulty

Power off, then restart the unit 2 minutes

Power o

later. Is it still displaying the error code?

aters it st

then restart the unit

ng the error co

minut

Yes

If the water-level switch

Ifthe waterevel switc

is inserted well?

nserted we

Yes

If the water-level switch

the waterevel switc

is broken?

roken

Replace the water pump, If

eplacethewater

malfunction is still not

malfunctio

solved

not

Yes

Replace the indoor main PCB

eplace the indoor main PCB

Yes

Insert the water-level switch well

nsert the waterevel switch we

Replace the water-level switch

eplace the waterevel switc

4 . --- R ef ri ge ra nt L e a k a g e D e t e c t i o n --- d i a g n os i s a n d s o l u t i o n ( EC )

Error Code EC

Define the evaporator co i l tem p.T2 of the com pres s o r just sta rt s running as Tcool . In the beginni ng 5

Malfunction decision conditions

minutes after the com pres s or st art s up, if T2 <Tcool---35.6° F(Tcool--- 2° C) does not kee p conti nuous 4 seconds and this sit uat i on happens 3 time s , the displ ay area show s “EC” and AC turns off.

S T2 Sensor faulty

Supposed Causes

S Indoor PCB faulty S System problems, such as leakage of blocking

Troubleshooting:

ADDITIONAL INFORMATION FOR CRITICAL PARTS:

Temperature sensor troubleshooting

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

Temperature sensors:

1. Room temperature (T1) sensor,

2. Indoor coil temperature (T2) sensor,

3. Outdoor coil temperature (T3) sensor,

4. Outdoor ambient temperature (T4) sensor,

5. Compressor discharge temperature (T5) sensor

Indoor Fan Motor

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

DISASSEMBLY OF UNDER CEILING--FLOOR CONSOLE I NDOOR UNIT

NOTE: All the operations should be performed after powered off.

No. Parts name Procedures Remarks

1 Remove the

air outlet

grilles.

1) Pull the grille locker till

the screws appears, and

release these screws.

2 Remove the

side cover

2) Remove the air return

grille (watch the lockers

under the grilles).

1) After remove the filter

grille, release the screw

fixing the side cover.

2) Push the side cover

upward to remove it.

3 Remove the

control

PCB

1) Release 2 screws fixing

the control box, and then

take it out.

2) Screw off the 2 screws to

remove the cover of the

control box

Main PCBFan Capacitor Transformer

3) Disconnect the fan motor

wire, louver motor wire,

room temperature and

evaporator temperature

wire, and display board

wire to remove the

electronic control box

4) Disconnect all the wires

of plugs connected to the

PCB

Control wires fo

outdoor unit

Indoor fan control

Power cord terminal

Power input

Input/output o

transformer

5) Remove the PCB from

the fixing pins

Swing motor control

To Display board

Temperature

sensors T1

3Remove the

fan motor

and fan

wheel

1) Remove the stickers

stick to the volute shell

2) Remove the below volute

shell

Stickers

Press the clips to take off the volute shell

Press

3) Disassemble the fan

motor fixing clamps to

remove the fan motor

assembly and fan wheel

assembly

The fan motor assembly and fan wheel assembly can be removed after took off the 2screws used to fix the fan motor fixing clamps.

4) Release the screws

locking the fan wheel on

the shaft, you can

remove the fan wheels.

Take off the screw

to remove the fan

wheel

4 Remove the

display

PCB

1) Release the 2 screws

(both sides) and push the

panel upwards to remove

2) Release 11 screws (5 at

the front and 6 at both

sides).

Release the screw

Push it upwards

3) Remove the front panel.

The display board is on

the back.

4) Release 2 screws fixing

the display PCB

5) Unplug the wires

5** Remove the

vertical

swing

motor

6 Remove 2

horizontal

swing

motors (on

both sides

off the unit)

1) Remove the drain pan

assembly

2) Remove the air outlet

grille assembly by

screwing of 8 screws

3) Release 2 screws fixing

the swing motor to

remove it

1) Remove the motor

protective cover

2) Screw off the 2 fixing

screws to remove swing

motor

Release the 2 screws

release 8 screws

2 screws

7 Remove the

evaporator

assembly

1) Remove the 4 screws (2

on left side and 2 on right

side) fixing the

evaporator on both sides

of the unit.

2) Remove the evaporator

Note: ** means there is no this part in some models.

APPENDIX

APPENDIX TABLE OF CONTENTS

DESCRIPTION NUMBER

Control Board Input/Output Values A1.......................................................................

Temperature Sensor Values (Temperature vs. Resistance) for T1, T2, T3, T4 A2........................................

Temperature Sensor Values (Temperature vs. Resistance) for T5 A3.................................................

Temperature Conversion A4................................................................................

Table 18 – Control Board Input/Output Values

CONNECTOR CONTROL BOARD INPUT or OUTPUT VALUE

CN 1 Live wire L1/Null line L2 Input Voltage: AC 230V

CN 2 Transformer interface Input AC 230V

CN3 Transformer interface Output AC12V

CN 25 Controls 24V signal interface (R/C) Input AC 24V

CN 7 Sensor interface Output 3V DC

CN 20 Network module interface Output 5V DC

CN 12 Vertical swing motor interface Output 12V DC

CN 13 horizontal swing motor interface Output 12V DC

CN 10 Display board interface Output 12V DC

CN 15 Signal interface(Y/O) Output 24V AC

CN 11 Water level detection switch Output 5V DC

CN 16 Motor interface Voltage: AC 230V

_C _F KOhm _C _F KOhm _C _F KOhm _C _F KOhm

-- 2 0 -- 4 115.266 20 68 12.6431 60 140 2.35774 100 212 0.62973

-- 1 9 -- 2 108.146 21 70 12.0561 61 142 2.27249 101 214 0.61148

-- 1 8 0 101.517 22 72 11.5 62 144 2.19073 102 216 0.59386

-- 1 7 1 96.3423 23 73 10.9731 63 145 2.11241 103 217 0.57683

-- 1 6 3 89.5865 24 75 10.4736 64 147 2.03732 104 219 0.56038

-- 1 5 5 84.219 25 77 10 65 149 1.96532 105 221 0.54448

-- 1 4 7 79.311 26 79 9.55074 66 151 1.89627 106 223 0.52912

-- 1 3 9 74.536 27 81 9.12445 67 153 1.83003 107 225 0.51426

-- 1 2 10 70.1698 28 82 8.71983 68 154 1.76647 108 226 0.49989

-- 1 1 12 66.0898 29 84 8.33566 69 156 1.70547 109 228 0.486

-- 1 0 14 62.2756 30 86 7.97078 70 158 1.64691 11 0 230 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

Table 19 – Temperature Sensor Resistance Value Table for T1, T2, T3, T4

_C _F KOhm _C _F KOhm _C _F KOhm _C _F KOhm

-- 2 0 -- 4 542.7 20 68 68.66 60 140 13.59 100 212 3.702

-- 1 9 -- 2 511.9 21 70 65.62 61 142 13.11 101 214 3.595

-- 1 8 0 483 22 72 62.73 62 144 12.65 102 216 3.492

-- 1 7 1 455.9 23 73 59.98 63 145 12.21 103 217 3.392

-- 1 6 3 430.5 24 75 57.37 64 147 11.79 104 219 3.296

-- 1 5 5 406.7 25 77 54.89 65 149 11.38 105 221 3.203

-- 1 4 7 384.3 26 79 52.53 66 151 10.99 106 223 3.113

-- 1 3 9 363.3 27 81 50.28 67 153 10.61 107 225 3.025

-- 1 2 10 343.6 28 82 48.14 68 154 10.25 108 226 2.941

-- 1 1 12 325.1 29 84 46.11 69 156 9.902 109 228 2.86

-- 1 0 14 307.7 30 86 44.17 70 158 9.569 11 0 230 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

Table 20 – Temperature Sensor Resistance Value Table for T5

Display Panel

Function indicators on indoor unit display panel

DEF./FAN lamp

Illuminates during DEFROST operation

Timer indicator

Illuminates during TIMER operation

Infrared signal receiver

Receives the signal from remote controller

Operation lamp indicator

Illuminates during operation

MANUAL

Fig. 23 Unit Display

Alarm indicator

Flashes when a failure is detected

Manual button

Service purpose switch - to be used by trained personnel only

Temperature indicator

Displays the room temperature

A150250

Table 21 – Temperature Conversion

°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

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Edition Da te: 09/15

C at a l o g N o . 40 MK C ( Q ) B --- F --- 0 1 S M

Replaces: New

Carrier 40MKCF, 24AHA4, 124ANS, 40MKQF, 25HHA4 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual