Friedrich KUHL R-410A User Manual

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Service Manual

Room Air Conditioners

AUTO

 

AUTO

°F °C

CONTINUOUS

 

AUTO

 

SYSTEM

FAN MODE

SCHEDULE

FAN SPEED

Standard Chassis R-410AModels

Cool Only

115-Volt: SS08M10, SS10M10, SS12M10, SS14M10

208-230-Volt: SS12M30, SS15M30, SM18M30, SM21M30

SM24M30, SL28M30, SL36M30

Cool with Electric Heat

208-230-Volt: ES12M33, ES15M33, EM18M34, EM24M35, EL36M35

Heat Pump with Electric Heat 208-230-Volt:YS12M33, YM18M34, YL24M35

Heat Pump

115-Volt:YS10M10

Kuhl-ServMan(5-10)

Table Of Contents

 

Important Safety Information .....................................................................................................................................

2-4

Introduction ...................................................................................................................................................................

5

Model and Serial Number Location ..............................................................................................................................

5

Unit Identification ..........................................................................................................................................................

6

Performance Data and Specifications ..........................................................................................................................

7

Installation Information/Sleeve Dimensions/Circuit Rating ...........................................................................................

8

Electrical Data ...............................................................................................................................................................

9

Before Operating the Unit ............................................................................................................................................

10

Control Panel Operation ..............................................................................................................................................

11

Alerts ......................................................................................................................................................................

12-14

Remote Control Operation ......................................................................................................................................

15-16

Electronic Control System Maintenance Operation .................................................................................................

17-20

Unit Operation ..............................................................................................................................................................

21

Cool-HeatSet Points ..................................................................................................................................................

22

Electronic Control Sequence of Operation ............................................................................................................

23-29

Unit Operation with a Wall-Stat ...................................................................................................................................

29

Removing the Front Cover and Unit Chassis ................................................................................................................

30

Replacing the ID Coil Thermistor ................................................................................................................................

31

Replacing the Control Board .......................................................................................................................................

31

Low Voltage Interface Connector ................................................................................................................................

32

Replacing the ID Coil Thermistor ................................................................................................................................

31

Remote Wall Thermostat .......................................................................................................................................

32-33

Airflow Selection and Adjustment ...............................................................................................................................

33

Components Testing ..............................................................................................................................................

34-35

Refrigeration Sequence of Operation ....................................................................................................................

36-37

Sealed Refrigeration System Repairs ...................................................................................................................

38-41

Hermetics Components Check ...................................................................................................................................

42

Reversing Valve Description/Operation ......................................................................................................................

43

Testing the Coil ...........................................................................................................................................................

44

Checking the Reversing Valve ...............................................................................................................................

44-45

Compressor Checks ..............................................................................................................................................

46-47

Compressor Replacement .....................................................................................................................................

48-49

Routine Maintenance / Battery Check / Change ......................................................................................................

50-53

Service and Assistance ...............................................................................................................................................

54

Performance Test Data Sheet and Sizing Guide ..........................................................................................................

55

Error Codes and Alarm Status ....................................................................................................................................

56

Troubleshooting .....................................................................................................................................................

57-66

Electronic Control Board Components Identification ...................................................................................................

67

Wiring Diagrams ....................................................................................................................................................

68-75

Thermistors' Resistance Values ..................................................................................................................................

76

Remote Control Replacement Instructions ...........................................................................................................

77-78

User Interface Service Kit ...........................................................................................................................................

79

Instructions for Using Cooling Load Estimate Form ...................................................................................................

80

Cooling Load Estimate Form ......................................................................................................................................

81

Heat Load Form ....................................................................................................................................................

82-83

Warranty .....................................................................................................................................................................

84

1

IMPORTANT SAFETY INFORMATION

The information contained in this manual is intended for use by a qualified service technician who is familiar with the safety procedures required for installation and repair, and who is equipped with the proper tools and test instruments required to service this product.

Installation or repairs made by unqualified persons can result in subjecting the unqualified person making such repairs as well as the persons being served by the equipment to hazards resulting in injury or electrical shock which can be serious or even fatal.

Safety warnings have been placed throughout this manual to alert you to potential hazards that may be encountered. If you install or perform service on equipment, it is your responsibility to read and obey these warnings to guard against any bodily injury or property damage which may result to you or others.

Your safety and the safety of others are very important.

We have provided many important safety messages in this manual and on your appliance. Always read and obey all safety messages.

This is a Safety Alert symbol.

This symbol alerts you to potential hazards that can kill or hurt you and others.

All safety messages will follow the safety alert symbol with the word “WARNING” or “CAUTION”. These words mean:

WARNING

CAUTION

You can be killed or seriously injured if you do not follow instructions.

You can receive minor or moderate injury if you do not follow instructions.

All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you what will happen if the instructions are not followed.

A message to alert you of potential property damage will have the NOTICE word “NOTICE”. Potential property damage can occur if instructions

are not followed.

PERSONAL INJURY OR DEATH HAZARDS

ELECTRICAL HAZARDS:

Unplug and/or disconnect all electrical power to the unit before performing inspections, maintenance, or service.

Make sure to follow proper lockout/tag out procedures.

Always work in the company of a qualified assistant if possible.

Capacitors, even when disconnected from the electrical power source, retain an electrical charge potential capable of causing electric shock or electrocution.

Handle, discharge, and test capacitors according to safe, established, standards, and approved procedures.

Extreme care, proper judgment, and safety procedures must be exercised if it becomes necessary to test or troubleshoot equipment with the power on to the unit.

2

Do not spray or pour water on the return air grille, discharge air grille, evaporator coil, control panel, and sleeve on the room side of the air conditioning unit while cleaning.

Electrical component malfunction caused by water could result in electric shock or other electrically unsafe conditions when the power is restored and the unit is turned on, even after the exterior is dry.

Never operate the A/C unit with wet hands.

Use air conditioner on a single dedicated circuit within the specified amperage rating.

Use on a properly grounded outlet only.

Do not remove ground prong of plug.

Do not cut or modify the power supply cord.

Do not use extension cords with the unit.

Follow all safety precautions and use proper and adequate protective safety aids such as: gloves, goggles, clothing, adequately insulated tools, and testing equipment etc.

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

REFRIGERATION SYSTEM REPAIR HAZARDS:

Use approved standard refrigerant recovering procedures and equipment to relieve pressure before opening system for repair.

Do not allow liquid refrigerant to contact skin. Direct contact with liquid refrigerant can result in minor to moderate injury.

Be extremely careful when using an oxy-acetylenetorch. Direct contact with the torch’s flame or hot surfaces can cause serious burns.

Make sure to protect personal and surrounding property with fire proof materials.

Have a fire extinguisher at hand while using a torch.

Provide adequate ventilation to vent off toxic fumes, and work with a qualified assistant whenever possible.

Always use a pressure regulator when using dry nitrogen to test the sealed refrigeration system for leaks, flushing etc.

Make sure to follow all safety precautions and to use proper protective safety aids such as: gloves, safety glasses, clothing etc.

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

MECHANICAL HAZARDS:

Extreme care, proper judgment and all safety procedures must be followed when testing, troubleshooting, handling, or working around unit with moving and/or rotating parts.

Be careful when, handling and working around exposed edges and corners of the sleeve, chassis, and other unit components especially the sharp fins of the indoor and outdoor coils.

Use proper and adequate protective aids such as: gloves, clothing, safety glasses etc.

Failure to follow proper safety procedures and/or these warnings can result in serious injury or death.

3

PROPERTY DAMAGE HAZARDS

FIRE DAMAGE HAZARDS:

Read the Installation/Operation Manual for the air conditioning unit prior to operating.

Use air conditioner on a single dedicated circuit within the specified amperage rating.

Connect to a properly grounded outlet only.

Do not remove ground prong of plug.

Do not cut or modify the power supply cord.

Do not use extension cords with the unit.

Be extremely careful when using acetylene torch and protect surrounding property.

Failure to follow these instructions can result in fire and minor to serious property damage.

WATER DAMAGE HAZARDS:

Improper installation, maintenance or servicing of the air conditioner unit can result in water damage to personal items or property.

Insure that the unit has a sufficient pitch to the outside to allow water to drain from the unit.

Do not drill holes in the bottom of the drain pan or the underside of the unit.

Failure to follow these instructions can result in damage to the unit and/or minor to serious property damage.

4

INTRODUCTION

This service manual is designed to be used in conjunction with the installation and operation manuals provided with each air conditioning system.

This service manual was written to assist the professional RAC (Room Air Conditioner) service technician to quickly and accurately diagnose and repair malfunctions.

This manual will deal with subjects in a general nature.

Accumulator

Outdoor Grille

Compressor

Discharge Air

Fresh Air Vent

 

 

 

Reversing Valve

 

 

 

Evaporator Coil

 

 

 

Electronic Control

 

 

Condenser Coil

 

Sleeve

Board

 

Control Key Pad

 

 

Air Intake Vents

 

 

Support Bar

 

 

 

Blower Wheel

Fan Blade

Air Intake From

Fan/Blower Motor

Sides and Bottom

Base Pan

 

Control Key Pad

Chassis Pull

(User Interface)

Out Handle

 

IMPORTANT: It will be necessary for you to accurately identify the unit you are servicing, so you can be certain of a proper diagnosis and repair (See Unit Identification code on page 6).

MODEL AND SERIAL NUMBER LOCATION

UL

Register the air conditioner

Model information can be found on the name plate behind the front cover.

For your future convenience, record the model information here.

MODEL NUMBER

MODEL NUMBER AIR CONDITIONING CO.YS10M10ASAN ANTONIO, TEXAS SERIAL NUMBER ASSEMBLED IN MEXICO LICY00008

SERIAL NUMBER

PURCHASE DATE

5

UNIT IDENTIFICATION

Model Number Code

S S 08 M 1 0 A

1st Digit – Function

S = Straight Cool, Value Series Y = Heat Pump

E = Electric Heat

2nd Digit

S = Small Chassis M = Medium Chassis L = Large Chassis

3rd and 4th Digit - Approximate BTU/HR in 1000s (Cooling)

Heating BTU/Hr capacity listed in the Specification/Performance Data Section

8th Digit – Engineering

Major change

7th Digit – Options

0 = Straight Cool &

Heat Pump Models

3 = 3 KW Heat Strip, Nominal

4 = 4 KW Heat Strip, Nominal

5 = 5 KW Heat Strip, Nominal

6th Digit – Voltage

1 = 115 Volts

3 = 230-208Volts

5th Digit

Alphabetical Modifier

RAC Serial Number Identification Guide

Serial Number

 

A

K

A

R

00001

Decade Manufactured

 

 

 

 

 

L=0

C=3

F=6

J=9

 

 

 

Production Run Number

A=1

D=4

G=7

 

 

 

 

 

B=2

E=5

H=8

 

 

 

 

Product Line

 

 

 

 

 

Year Manufactured

 

 

 

 

A=1

D=4

G=7

K=0

 

 

 

R = RAC

B=2

E=5

H=8

 

 

 

 

 

C=3

F=6

J=9

 

 

 

 

 

 

 

 

 

 

 

Month Manufactured

 

 

 

 

 

A=Jan D=Apr G=Jul K=Oct

 

 

 

 

B=Feb E=May H=Aug L=Nov

 

 

 

 

C=Mar F=Jun J=Sept M=Dec

 

 

 

 

 

 

 

 

 

 

 

 

6

PERFORMANCE DATA

COOLING

EVAP. AIR TEMP. DEG.

CONDENSER

Discharge

Suction

 

Sub-

OPERATING

ELECTRICAL RATINGS

R-410A

 

BREAKER

F

 

 

PRESSURES

REF.

 

FUSE

PERFORMANCE

 

Super Heat

 

 

 

Voltage

DATA*

Discharge Air

Temp.

TEMP DEG. F

Temp

Temp

 

Cooling

Suction

Discharge

Amps

Amps

Locked Rotor

Charge in

 

60 Hertz

Drop F.

 

 

 

 

 

Cool

Heat

Amps

OZ.

 

Amps

SS08M10-A

53

27

115

157

62

12

31

151

400

6.1

 

32.0

24.0

115

15

SS10M10-A

52

28

119

150

65

15

28

145

455

8.0

 

50.0

51.0

115

15

SS12M10-A

50

30

118

163

60

12

23

137

435

10.0

 

57.0

35.0

115

15

SS14M10-A

49

31

121

170

56

10

22

132

425

12.0

 

63.0

29.0

115

15

YS10M10-A

56

24

114

150

64

12

14

152

395

7.8

7.6

34.5

33.0

115

15

SS12M30-A

49

31

116

158

62

13

21

142

405

4.8

 

30.0

33.0

230/208v

15

ES12M33-A

51

29

115

158

62

13

18

140

400

4.8

16.0

30.0

33.0

230/208v

15

YS12M33-A

49

31

116

167

65

16

21

140

455

5.2

5.1

26.0

34.5

230/208v

15

SS15M30-A

53

27

121

171

62

14

28

138

430

6.4

 

32.0

32.5

230/208v

15

ES15M33-A

53

27

121

171

62

14

28

138

430

6.4

16.0

32.0

32.5

230/208v

15

SM18M30-A

54

26

122

160

62

9

31

145

450

7.4

 

42.0

55.0

230/208v

15

EM18M34-A

54

26

122

160

62

9

31

145

450

7.4

19.5

42.0

55.0

230/208v

30

YM18M34-A

50

30

118

168

60

15

24

130

410

8.5

8.5

44.0

49.5

230/208v

15

SM21M30-A

48

32

124

170

55

10

28

137

455

9.4

 

46.0

55.0

230/208v

15

SM24M30-A

46

34

129

179

55

12

34

123

495

11.0

 

47.0

40.0

230/208v

20

EM24M34-A

46

34

129

179

55

12

34

123

495

11.0

 

47.0

40.0

230/208v

30

YL24M34-A

56

24

121

176

62

18

25

135

480

11.1

12.2

47.0

74.0

230/208V

30

SL28M30-A

47

33

126

181

58

12

26

133

430

13.5

 

60.0

78.5

230/208v

20

SL36M30-A

51

29

129

188

56

12

31

122

470

19.0

 

96.0

77.0

230/208v

30

*Rating Conditions: 80 degrees F, room air temp. & 50% relative humidity, with 95 degree F, outside air temp & 40% relative humidity, all systems use R-410A.

SPECIFICATIONS

 

 

 

 

 

ENERGY STAR® qualified

 

 

 

 

 

 

 

 

 

 

 

 

Energy

Estimated

 

Room Side

 

 

 

 

 

 

 

 

 

 

 

 

Efficiency Yearly Moisture

Air

 

Net

 

 

Cooling

Heating

Volts

Cooling

Cooling

Heating

Heating

 

Ratio

Operating

Removal

Circulation

 

Weight

 

Model

Capacity Btu

Capacity Btu

Rated

Amps

Watts

Amps

Watts

COP

EER

Cost

Pints/HR

CFM

Sleeve

Lbs

 

Kühl

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SS08M10

7900

115

6.1

677

11.7

$54

1.0

265

S

99

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SS10M10

9500

115

7.7

848

11.2

$68

2.0

260

S

106

 

SS12M10

12000

115

10.0

1071

11.2

$86

3.0

300

S

112

 

SS14M10

14000

115

12.0

1444

9.7

$115

3.5

325

S

116

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SS12M30

11700/11200

230/208

4.8/4.9

1026/982

11.4/11.4

$82

2.8

275

S

112

 

SS15M30

14500/14300

230/208

6.4/6.8

1405/1385

10.3/10.3

$112

3.5

360

S

116

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SM18M30

17500/17200

230/208

7.4/8.0

1635/1617

10.7/10.7

$131

4.6

350

M

140

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SM21M30

20800/20700

230/208

9.4/10.3

2080/2070

10.0/10.0

$166

6.0

425

M

132

 

SM24M30

23500/23300

230/208

11.2/11.9

2500/2479

9.4/9.4

$200

10.0

390

M

152

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SL28M30

27800/27000

230/208

13.5/14.4

2865/2812

9.7/9.6

$229

8.5

600

L

193

 

SL36M30

36000/35700

230/208

19.0/20.5

4235/4200

8.5/8.5

$338

12.0

725

L

212

 

Kühl + Heat Pump

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

YS10M10*

9500

7500

115

7.8

812

7.6

743

3.0

11.7

$65

1.9

285

S

109

 

YS12M33

12100/12100

9400/9000

230/208

5.2/5.4

1120/1120

5.6/5.8

1132/1139

2.4

10.8/10.8

$89

3.0

265

S

115

 

YM18M34

18200/17800

15500/15400

230/208

8.5/8.9

1838/1798

8.5/8.7

1833/1761

2.6

9.9/9.9

$147

5.4

370

M

141

 

YL24M35

24000/23600

23500/23200

230/208

11.1/12.0

2474/2433

12.2/14.3

2610/2575

2.6

9.7/9.7

7.0

600

L

197

 

Kühl + Electric Heat

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ES12M33

11700/11200

10700/8900

230/208

4.8/4.9

1026/982

16.0/14.7

3500/2900

3.3

11.4/11.4

$82

2.8

275

S

113

 

ES15M33

14500/14300

10700/8900

230/208

6.4/6.8

1405/1385

16.0/14.7

3500/2900

3.0

10.3/10.3

$112

3.5

360

S

117

 

EM18M34

17500/17200

13000/10600

230/208

7.4/8.0

1635/1617

19.5/17.0

4200/3500

3.1

10.7/10.7

$131

4.6

350

M

141

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EM24M34

23500/23300

13000/10600

230/208

11.2/11.9

2500/2479

19.5/17.0

4200/3500

3.1

9.4/9.4

$200

10.0

390

M

153

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EL36M35

36000/35700

17300/14300

230/208

19.0/20.5

4235/4200

24.0/22.4

5500/4650

2.5

8.5/8.5

$338

12.0

725

L

213

* Operates on 115 volt and is not equipped with supplemental heat. Will not provide heat at temperatures below 40°F. Friedrich room air conditioners are designed to operate in outdoor temperatures from 60° F to 115° F.

Due to continuing research in new energy-savingtechnology, specifications are subject to change without notice.

As an ENERGY STAR® partner, Friedrich Air Conditioning Co. has determined that the selected ENERGY STAR® ( ) models meet the ENERGY STAR® guidelines for energy efficiency.

The consumerthrough the AHAM Room Air Conditioner Certification Programcan be certain that the AHAM Certification Seal accurately states the unit’s cooling and heating capacity rating, the amperes and the energy efficiency ratio.

Estimated yearly operating cost based on a 2007 national average electricity cost of 10.65 cents per kWh.

† The estimated yearly operating cost of this model was not available at the time the range was published.

R-410A

All models use environmentally friendly R-410Arefrigerant.

7

Installation Information / Sleeve Dimensions

 

 

 

Depth

Shell Depth to

 

 

 

 

Thru-the-wallInstallation

 

 

 

Minimum

Minimum

Window Width

 

Finished Hole

 

 

 

with Front

Louvers

Extension

Extension

 

 

 

 

 

Sleeve

 

 

 

 

 

 

 

 

 

Height

Width

 

 

Into Room*

Outside*

Minimum**

Maximum

Height

Width

Max. Depth

S

15 15/16"

25 15/16"

29"

8 ¾"

5 ¾”

16 15/16

27 3/8"

42"

16 3/16”

26 3/16”

7 3/8"

M

17 15/16"

25 15/16"

29"

8 ¾"

5 ¾

16 15/16

27 3/8"

42"

18 3/16”

26 3/16”

7 3/8

L

20 3/16"

28"

35 ½”

16 ½"

5 3/8

18 15/16

29 7/8

42"

20 3/8"

28 ¼"

15 1/8

*Minimum extensions when mounted in a window.

**Minimum widths achieved using one side curtain assembly as opposed to both in a standard installation. NOTE: S,M and L sleeves may be installed in window with no side kits if properly installed.

Circuit Rating/ Breaker

 

Circuit Rating

 

 

Wall Outlet

Model

Breaker or

Plug Face

Power Cord

T-DFuse

(NEMA#)

Length (ft.)

Appearance

SS08M10, SS10M10, SS12M10 and

125V - 15A

5 - 15P

6

 

 

 

 

 

 

 

 

SS14M10. YS10M10.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Front

 

 

 

 

 

 

 

 

 

 

 

SS12M30, SS15M30, SM18M30 and

250V - 15A

6 - 15P

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SM21M30.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SM24M30, SL28M30. ES12M33,

250V - 20A

6 - 20P

4

 

 

 

 

 

 

 

 

ES15M33. YS12M33

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SL36M30. EM18M34, EM24M34,

250V - 30A

6 - 30P

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EL36M35. YM18M34 and YL24M35

 

 

 

 

 

 

 

 

 

 

 

(C)

(B)

 

SIDE VIEW

 

For the best cooling performance and highest energy efficiency

Keep the filter clean

Make sure that your air conditioner is always in top performing condition by cleaning the filter regularly.

Provide good air flow

Make sure the airflow to and from the unit is clear. Your air conditioner puts the conditioned air out at the top of the unit, and takes in unconditioned air at the bottom. Airflow is critical to good operation. It is just as important on the outside of the building that the airflow around the unit exterior is not blocked.

Insulation

Good insulation will be a big help in maintaining desirable comfort levels. Doors should have weather stripping. Be sure to caulk around doors and windows.

Proper installation of seal gasket

Make sure the seal gasket has been installed properly to minimize noise and improve efficiency. If the seal gasket has not been installed, please refer to the installation instructions.

Unit placement

If your air conditioner can be placed in a window or wall that is shaded by a tree or another building, the unit will operate even more efficiently. Using drapes or blinds on the sunny side of the dwelling will also add to your unit’s efficiency.

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ELECTRICAL DATA

WARNING

ELECTRIC SHOCK HAZARD

Turn off electric power before service or installation.

All electrical connections and wiring MUST be installed by a qualified electrician and conform to the National Electrical Code and all local codes

which have jurisdiction.

Failure to do so can result in personal injury or death.

 

NOTICE

 

 

FIRE HAZARD

 

Not following the above WARNING could result in fire or

 

electically unsafe conditions which could cause moderate

 

or serious property damage.

 

Read, understand and follow the above warning.

Wire Size

Use ONLY wiring size recommended for single outlet branch circuit.

Fuse/Circuit Breaker

Use ONLY the correct HACR type and size fuse/circuit breaker. Read electrical ratings on unit’s

 

rating plate. Proper circuit protection is the responsibiity of the homeowner.

Grounding

Unit MUST be grounded from branch circuit through service cord to unit, or through separate

 

ground wire provided on permanently connected units. Be sure that branch circuit or general

 

purpose outlet is grounded.

Receptacle

The field supplied outlet must match plug on service cord and be within reach of service cord.

 

Do NOT alter the service cord or plug. Do NOT use an extension cord. Refer to the table above

 

for proper receptacle and fuse type.

The consumer - through the AHAM Room Air Conditioner Certification Program - can be certain that the AHAM Certification Seal accurately states the unit’s cooling and heating capacity rating, the amperes and the energy efficiency ratio.

*HACR: Heating Air Conditioning and Refrigeration

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