Friedrich WS09A10D, WS12A30D, WS12A10D, WS09A30D, WS13A30D Service Manual

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Page 1

Room AirRoom Air

Room Air

Room AirRoom Air

ConditioningConditioning

Conditioning

ConditioningConditioning

SERVICESERVICE

SERVICE

SERVICESERVICE

ManualManual

Manual

ManualManual

RACServMn (01/02)

Page 2

able of Contentsable of Contents

able of Contents

able of Contentsable of Contents

Page

Typical Unit Components................................ 3

Introduction ..................................................... 3

Unit Identification ............................................ 4

Unit Specifications .......................................... 5

Unit Performance ........................................... 7-20

Refrigeration Sequence of Operation ............. 21

Electrical Rating Tables .................................. 22

Compressor .................................................... 23

Thermal Overload (External) .......................... 23

Thermal Overload (Internal) ............................ 24

Fan Motor ....................................................... 24

System Switches/Controls .............................. 25-33

Thermostats (Indoor) ...................................... 34-35

Thermostats (Defrost) .................................... 35-36

Resistor (Heat Anticipator) .............................. 36

Capacitor, Run................................................ 36-37

Check Valve ................................................... 37

Heat Pump Reversing Valve........................... 37-38

Solenoid Coil (Heat Pump Models) ................. 38

Valve, Drain Pan ............................................. 38

Heating Element ............................................. 39

Sealed Refrigeration Repairs .......................... 39-40

Refrigerant Charging ...................................... 40-41

Undercharged Refrigerant Systems ............... 41-42

Overcharged Refrigerant Systems ................. 42

Restricted Refrigerant System ........................ 43

Routine Maintenance ...................................... 44

Troubleshooting .............................................. 45-55

Wiring Diagrams

"RS", "RM",...................... 618-200-17 ..... 56

"SQ" ................................ 617-581-09 ..... 57

"KQ" ................................ 617-581-04 ..... 58

"YQ" ................................ 617-581-05 ..... 59

"SC"................................. 614-406-00 ..... 60

"SS", "SM" ....................... 618-200-03 ..... 61

"SL" ................................. 618-200-00 ..... 62

"KS", "KM", "KL" .............. 618-200-00 ..... 63

"ES", "EM", "EL", "EK" .....618-200-01 ..... 64

"YS13", "YM", "YL" .......... 618-200-02 ..... 65

"YS09" .............................619-142-17 ..... 66

Testing XQ and QME Boards ......................... 67

Quick Reference Guide – QuietMaster ........... 68

Quick Reference Guide – XStar ..................... 69

Page 3

Reversing Valve (if so equipped)

ypical Unit Componentsypical Unit Components

ypical Unit Components

ypical Unit Componentsypical Unit Components

Fresh Air

Capillary Tube

Compressor

Liquid Filter Driers

Condenser Coil

Front Cover

System Switches

Evaporator Coil

Return Air Grille/ Filter

Blower Wheel

Blower Motor

INTRODUCTIONINTRODUCTION

INTRODUCTION

INTRODUCTIONINTRODUCTION

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

This service manual was written to assist the professional RAC service technician to quickly and accurately diagnose and repair malfunctions.

This manual will deal with subjects in a general nature. (i.e. All text will not pertain to all models).

Basepan

Condenser Fan Blade

Discharge Air

Outdoor Grille

Sleeve

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.)

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

Installation or repairs made by unqualified persons can result in hazards subjecting the unqualified person making such repairs to the risk of injury or electrical shock which can be serious or even fatal not only to them, but also to persons being served by the equipment.

If you install or perform service on equipment, you must assume responsibility for any bodily injury or property damage which may result to you or others. Friedrich Air Conditioning Company will not be responsible for any injury or property damage arising from improper installation, service, and/or service procedures.

Page 4

UNIT IDENTIFICAUNIT IDENTIFICA

UNIT IDENTIFICA

UNIT IDENTIFICAUNIT IDENTIFICA

Model Number Code

SQ06J 1 0 A

TIONTION

TION

TIONTION

1st Digit – Function

S = Straight Cool, Value Series C = Straight Cool, Budget

Series Y = Heat Pump E = Electric Heat K = Straight Cool, Challenger

Series W = Thru-the Wall, WallMaster

Series

2nd Digit

C = Casement P = PowerMiser "Portable" Q = Q-Star M = Medium Chassis L = Large Chassis W = Built -In H = HazardGard

8th Digit – Engineering

Major change

7th Digit – Options

0 = Straight Cool & Heat Pump Models 1 = 1 KW Heat Strip, Normal 3 = 3 KW Heat Strip, Normal 4 = 4 KW Heat Strip, Normal 5 = 5 KW Heat Strip, Normal 8 = 8 KW Heat Strip, Normal

6th Digit – Voltage

1 = 115 Volts 2 = 230 Volts 3 = 230-208 Volts

5th Digit

Alphabetical Modifier

3rd and 4th Digit Approximate BTU/HR (Cooling)

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

RAC Serial Number Identification Guide

Serial Number

Decade Manufactured

L=0 C=3 F=6 J=9

A=1 D=4 G=7

B=2 E=5 H=8

Year Manufactured

A=1 D=4 G=7 K=0

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=Sep M=Dec

L A G S 00001

Production Run Number

PRODUCT LINE

S=RAC P=PTAC E=EAC V=VPAK H=Split

Page 5

Room Air Conditioner Specifications ENERGY STAR® Compliant

Model

XSTAR

✭

XQ05J10

✭

XQ06J10 XQ07J10 XQ08J10

QSTAR

✭ ✭

QSTAR

SQ05J10B SQ06J10B SQ08J10B

KQ05J10B KQ06J10B KQ058J10B

QuietMaster® Electronic

✭

SS08J10R

✭

SS09J10B

✭

SS10J10R

✭

SS12J10AR

✭

SS14J10R SS12J30B SS16J30 SM19J30R SM12J30B

12000/12000 15600/15300 13900/19000 21000/20500

QuietMaster® Deluxe

✭

RS10J10

✭

RS12J10A RS14J10 RS16J30 RS19J30

QuietMaster

15600/15300 19300/19000

KS10J10 KS12J10 KS14J10 KS12J30A KS18J30B KM21J30 KL25J30A

12500/12500 17600/17300 20500/20500 25000/25000

QuietMaster® Heavy Duty

✭

SL24J30A SL28J30A SL33J30

24500/24500 28000/27500 33000/32500

TwinTemp® Heat Pump

YQ06J10A** Y309J10** YS13J33 YM18J34A YL24J35A

13000/13000 17500/17500 24000/23800

TwinTemp® Electric Heat

ES12J33 ES12J33A ES16J33 ES19J34 EK18J34B EL24J35A EL33J35

12000/12000 12500/12500 15600/15300 19300/19000 17600/17300 24500/24500 33000/33000

Casement

SC06H10D

Cooling

Capacity

BTU/Hr.

5400 6200 7100 8250

5400 6200 8250

5000 6000 8250

8200

9200 10200 11750 14000

1000 11700 14200

1000 11500 14000

6200

9000

6200

Heating

Capacity

BTU/H

– – – –

– – –

– – – – – – – – – – – – –

– – – – –

– – – – – – –

– – –

5300

8300 12400/12300 16500/16300 23000/22800

10700/8900 10700/8900

10700/8900 13000/10600 13000/10600 17300/14300 17300/14300

–

Volts

Rated

115 115 115 115

115 115 115

115 115 115 115

115 230/208 230/208 230/208 230/208

115

115 230/208 230/208

115

115 230/208 230/208 230/208 230/208

230/208 230/208 230/208

115

115 230/208 230/208 230/208

230/208 230/208 230/208 230/208 230/208 230/208 230/208

115

Cooling

Amps

4.6

5.1

6.5

4.5

4.6

5.1

7.5

4.7

5.4

7.5

6.7

7.2

7.5

9.8

12.0

5.5/5.7

7.2/7.7

8.9/9.6

10.6/11.4

8.3

9.8

12.0

7.2/7.7

8.9/9.6

9.1

10.5

12.0

5.8/6.2

8.2/8.7

1.03/11.4

12.3/13.6

11.9/13.0

14.0/15.5

17.0/18.0

5.7

7.2

6.0/6.5

8.3/9.0

12.0/13.0

5.5/5.7

538/6.2

7.2/7.7

8.9/9.6

8.2/8.7

11.9/13.0

17.0/18.0

6.7

Cooling

1143/1091 1598/1560 1972/1926 2333/2278

1598/1560 1972/1926

1250/1205 1820/1760 2278/2278 2278/2278

2580/2605 3110/3090 3665/3610

1327/1327 1862/1862 2665/2645

1145/1090 1250/1250 1598/1560 1972/1926 1820/1760 2580/2605 3665/3610

Watts

507 564 689 842

507 564 842

516 592 842

745 800

872 1068 1308

909 1068 1357

971 1150 1386

620

785

715

Heating

Amps

– – – –

– – –

– – – – – – – – –

– – – – –

– – – – – – –

– – –

–

6.2

6.7

6.0/6.5

7.6/8.3

10.4/11.5

16.0/14.7

19.5/17.0

24.0/22.4

Heating

Watts

– – – –

– – –

– – – – – – – – –

– – – – –

– – – – – – –

– – –

– 615 760

1340/1300 1720/1700

2350/2340 3500/2900 3500/2900 3500/2900 4200/3500 4200/3500 5500/4650

5500/4650

Energy

Efficiency

Ratio E E R

10.7

11.0

10.3

9.8

10.7

11.0

9.8

9.7

10.1

9.8

11.0

11.5

11.7

11.0

10.7

10.5/11.0

9.8/9.8

9.8/9.9

9.0/9.0

11.0

10.5

9.8/9.8

10.3

10.0

10.1

10.0/10.0

9.7/9.8

9.0/9.0

9.5/9.4

9.0/8.9

9.0/9.0

10.0

11.5

9.8/9.8

9.4/9.4

9.0/9.0

10.5/11.0

10.0/10.0

9.8/9.8

9.8/9.9

9.7/9.8

9.5/9.4

9.0/9.0

8.7

Moisture Removal Pints/Hr.

1.5

2.0

2.5

1.5

2.0

2.5

1.5

2.0

2.5

2.0

1.7

2.6

3.5

3.7

3.5

5.0

5.7

7.0

2.6

3.5

3.7

5.0

5.7

2.8

3.5

3.7

3.5

5.5

7.0

7.7

8.8

11.0

2.0

1.7

3.5

5.2

7.0

3.5

5.0

5.7

5.5

7.7

11.0

2.0

Room

Side Air

Circulation

CFM

160 160 145 165

160 160 165

165 165 165

310 300 300 325 400 330 325 330 440

300 325 400 330 425

325 325 400 325 440 440 560

560 600 700

140 300 325 425 600

325 325 330 425 440 560 700

140

Sleeve*

Q Q Q Q

Q Q Q

S S S S M S S M M

S S M S M

S S M S M M

L L L

Q S S M

S S S M M

L L

Net

Weight

Lbs.

70 77 80 80

70 77 80

76 76 79

108 113 115 114 128 114 119 163 154

115 114 128 119 163

108 111 128 106 161 154 192

192 201 216

78 113 117 166 198

111 108 116 160 158 191 215

✭ Sleeve dimensions are listed on the following page. ✭✭ These heat pumps have no supplemental electric and should not be operated below 37F.

As an ENERGY STAR partner, Friedrich Air Conditioning co. has determined that the selected ENERGY STA R (M) models meet the ENERGY STA R requirements for energy efficiency.

Page 6

WallMaster® Thru-the-wall Specifications

Heating

Capacity

BTU/H

–

8200/8200

10800/10500

11000/9100

Volts

Rated

115

230/208

Cooling

Amps

6.7

9.0

11.5

4.5/4.9

5.7/6.3

6.3/6.8

4.5/4.8

5.8/6.2

4.5/4.9

5.7/6.3

6.3/6.8

Cooling

Watts

735

980

1280

980/980

1280/1255

1435/1415

1000/980

1315/1280

980/980

1280/1255

1435/1415

Heating

Amps

–

4.1/4.2

5.4/5.7

16.0/14.7

WS07A10D

WS09A10D

WS12A10D

WS09A30D

WS12A30D

WS13A30D

WY09A33D

WY12A33E

WE09A33D

WE12A33D

WE13A33D

Cooling

Capacity

BTU/Hr.Model

7000

9000

11500

9000/8800

11500/11300

12500/12300

9000/8800

11300/10900

9000/8800

11500/11300

12500/12300

Heating

Watts

–

870/840

1200/1165

3550/2950

Energy

Efficiency

Ratio E E R

8.5

9.2

9.0

9.2/9.0

9.0/9.0

8.7/8.7

9.0/9.0

8.6/8.5

9.2/9.0

9.0/9.0

8.7/8.7

Moisture Removal Pints/Hr.

1.4

2.0

2.9

2.1

2.9

4.0

2.1

2.9

2.1

2.9

4.0

Room

Side

Air

Circulation

CFM

260

290

260

290

250

270

290

260

290

250

Sleeve*

WSC

Net

Weight

Lbs.

103

112

101

109

119

107

116

103

111

121

Installation Information / Sleeve Dimensions

Depth Depth Minimum Minimum Thru-the-wall

with Hood to Extension Extension Window Width Finished Hole

Sleeve Height Width Front Louvers Into Room Outside Minimum Maximum Height Width

Q 14" 19 3/4" 21 3/8" 8 1/2" 5 1/2" 10 3/4" 26" 42" 14 3/4" 20"

S 15 15/16" 25 15/16" 27 3/8" 9 3/4" 3 1/16" 16 15/16" 27 7/8" 42" 16 3/16" 26 3/16"

M 17 15/16" 25 15/16" 27 3/8" 8 3/4" 3 1/16" 16 15/16" 27 7/8" 42" 18 3/8" 26 3/16"

L 20 3/16" 28" 33 5/8" 16 1/2" 3 3/16" 18 15/16" 29 7/8" 42" 20 3/8" 28 1/4

SC 10 13/16" 14 11/16" 27" 9 7/8" 2 1/2" 15 1/2" 14 3/4" 17 7/8" 11 1/8" 14 15/16"

WSC 16 3/4" 27"

* Maximum Height

23" – 7 1/2" 9/16" – – 17 1/4" 27 1/4"

Page 7

Unit Performance Sheets

SPECIFICATIONS SQ05J10A-1 SQO6J10A-1 SQO7J10A-1 SQO8J10AB-1

BTUH (Cooling) 5400 6300 7100 8000

E.E.R. (Cooling) 11.0 10.8 10.3 10.0

Volts 115 115 115 115

Amperes (Cooling) 4.4 5.2 6.5 7.5

Total Watts (Cooling) 490 585 690 800

Hertz 60 60 60 60

Fuse / Breaker Size 15 15 15 15

Fan RPM 1115 1115 1115 1115

Evaporator Air CFM 160 160 140 165

Exhaust Air CFM Yes Yes Yes Yes

Dehumidification Pts / Hr. 1.5 2.0 2.5 2.5

Width 19¾ 19¾ 19¾ 19¾

Height 14" 14" 14" 14"

Depth 213/

Minimum Ext. into Room 5½ 5½ 5½ 5½

Minimum Ext. to Outside 10¾ 10¾ 10¾ 10¾

Net Weight (Lbs.) 76 78 79 82

Shipping Weight (Lbs.) 81 83 84 87

213/

PERFORMANCE EVAPORATOR AIR OPERATING ELECTRICAL R-22 COMP. DATA* TEMP. °F. PRESSURES RATINGS REFRIG. OIL Cooling DISCHARGE TEMP. SUCTION DISCHARGE AMPS LOCKED CHARGE IN CHARGE IN

AIR DROP °F ROTOR AMPS OZ. FLUID OZ.

**SQ05J10A-1 55.45 24.55 76.5 281 4.4 34.0 16.0 R-22 9.8

**SQ06J10A-1 51.45 28.55 75.5 262 5.2 35.0 15.7 R-22 9.8

**SQ07J10A-1 50.41 29.59 75.5 277 6.5 40.0 24.0 R-22 9.8

**SQ08J10AB-1 50.50 29.50 74.5 262 7.5 39.2 19.5 R-22 9.8

* Rating Conditions:80°F Room Air Temperature and 50% Relative Humidity with

** Use Sunisco 4GDID Refrigerant Oil or Atmos 60.

95°F Outside Air Temperature at 40% Relative Humidity.

Page 8

KQ05J10A-1 KQ06J10A-1 KQ08J10A-1 YQ06J10A-1

SPECIFICATIONS

KQ05J10A-3 KQ06J10A-3

BTUH (Cooling) 5300 6200 7900 6200

E.E.R. (Cooling) 9.0 9.5 9.5 10.0

Volts 115 115 115 115

Amperes (Cooling) 5.2 5.8 7.5 5.7

Total Watts (Cooling) 585 650 830 620

Hertz 60 60 60 60

Fuse/Breaker Size 15 15 15 15

Fan RPM 1075 1075 1075 1075

Evaporator Air CFM 165 165 165 140

Exhaust Air CFM Yes Yes Yes Yes

Dehumidification Pts/Hr 1.5 2.0 2.5 2.0

Width 19¾" 19¾" 19¾" 19¾"

Height 14" 14" 14" 14"

Depth 213/8" 213/8" 213/8" 213/8"

Minimum Ext. Into Room 5½" 5½" 5½" 5½"

Minimum Ext. to Outside 10¾" 10¾" 10¾" 10¾"

Net Weight 76 76 82 80

Shipping Weight 81 81 87 85

PERFORMANCE EVAPORATOR AIR OPERATING ELECTRICAL R-22 COMP. DATA* TEMP. °F. PRESSURES RATINGS REFRIG. OIL Cooling DISCHARGE TEMP. SUCTION DISCHARGE AMPS LOCKED CHARGE IN CHARGE IN

AIR DROP °F ROTOR AMPS OZ. FLUID OZ.

**KQ05J10A-1 56.34 23.66 76.5 265 5.2 29.0 12.0 R-22 9.8

**KQ05J10-3 56.34 23.66 76.5 265 5.2 29.0 13.5 R-22 9.8

**KQ06J10A-1 58.02 21.98 72.5 265 5.8 35.0 14.5 R-22 9.8

**KQ06J10A-3 58.02 21.98 72.5 265 5.8 35.0 13.0 R-22 9.8

**KQ08J10A-1 51.43 28.57 75.5 265 7.5 39.2 18.0 R-22 9.8

**YQ06J10A-1 54.10 25.90 74.5 260 5.7 39.2 19.0 R-22 9.8

* Rating Conditions:80°F Room Air Temperature and 50% Relative Humidity with

** Use Sunisco 4GDID Refrigerant Oil or Atmos 60.

95°F Outside Air Temperature at 40% Relative Humidity.

Page 9

SPECIFICATIONS SC06H10D

BTUH (Cooling) 5950

E.E.R. (Cooling) 8.0

Volts 115

Amperes (Cooling) 6.8

Total Watts (Cooling) 760

Hertz 60

Fuse/Breaker Size 15

Fan RPM 1595

Evaporator Air CFM 125

Dehumidification Pts/Hr 2.0

Width 1411/16"

Height 1013/16"

Depth 27"

Minimum Ext. Into Room 2½"

PERFORMANCE DATA* SC06H10D

DISCHARGE 56.1

EVAPORATOR AIR AIR

TEMP. °F TEMP 23.9

DROP °F

OPERATING SUCTION 72

PRESSURES DISCHARGE 293

AMPS 6.8

ELECTRICAL

RATINGS LOCKED 35.0

ROTOR AMPS

R-22 CHARGE IN 14

REFRIG. OUNCES

COMP. CHARGE IN 9.8

OIL FLUID OZ.

Minimum Ext. To Outside 15½"

Net Weight 70

* Rating Conditions:

80°F Room Air Temperature and 50% Relative Humidity with 95°F Outside Air Temperature at 40% Relative Humidity.

Shipping Weight 80

PERFORMANCE DATA VOLTS BTUH CFM HEAT RISE Heating HIGH SPEED

YQ06J10A 115 5300 140 35.0

PERFORMANCE DATA Heating YQ06J10A-1 EVAPORATOR SUCTION/HEAD CONDITIONS BTUH AIR TEMP. RISE AMPERES WATTS PRESSURE

70°F Inside 62°F Outside 6200 41.0 6.7 670 65/295

70°F Inside 57°F Outside 5900 39.0 6.5 650 61/285

70°F Inside 52°F Outside 5600 37.0 6.4 630 58/275

AHAM 70°F Inside 47°F Outside 5300 35.0 6.2 615 55/265

70°F Inside 45°F Outside 5200 34.4 6.1 610 53/260

70°F Inside 42°F Outside 5000 33.1 6.0 595 51/255

Page 10

SPECIFICATIONS KM14J10B1 KS10J10-1 KS12J10-1 KS12J30A1 KM18J30A2 KM21J304 KL21J30A3

KS10J10-3 KS12J103 KS12J30A3 KM18J30A3 KL25J30A1

BTUH 12500 18000 21000 25000

14000 10000 12000 12500 18000 20500 24700

E.E.R. 10.0 9.6 9.0 8.3

10.1 10.3 9.5 10.0 9.6 9.0 8.2

Volts 230 230 230 230

115 115 115 208 208 208 208

Amperes 5.8 8.3 10.5 13.5

12.0 9.1 10.8 6.2 9.1 11.3 15.0

1250 1875 2335 3010

Total Watts 1385 970 1265 1250 1875 2280 3010

Hertz 60 60 60 60 60 60 60

Fuse/Breaker Size 15 15 15 15 15 15 20

Fan RPM 1180 1115 1080 1180 1120 1120 1120

Evaporator Air CFM 400 325 325 325 440 535 610

Fresh Air CFM Yes Yes Yes Yes Yes Yes Yes

Exhaust Air CFM Yes Yes Yes Yes Yes Yes Yes

Dehumidification Pts/HR 3.7 2.8 3.5 3.5 5.5 6.3 7.6

Width 25-15/16" 25-15/16" 25-15/16" 25-15/16" 25-15/16" 25-15/16" 28"

Height 17-15/16" 15-15/16" 15-15/16" 15-15/16" 17-15/16" 17-15/16" 20-3/16"

Depth 27-3/8" 27-3/8" 27-3/8" 27-3/8" 27-3/8" 27-3/8" 33-5/8"

Minimum Ext. Into Room 3-1/16" 3-1/16" 3-1/16" 3-1/16" 3-1/16" 3-3/16" 3-3/16"

Minimum Ext. to Outside 16-15/16" 16-15/16" 16-15/16" 16-15/16" 16-15/16" 16-15/16" 18-15/16"

Net Weight 128 108 111 111 136 183 190

Shipping Weight 138 118 121 121 148 203 210

PERFORMANCE EVAPORATOR AIR OPERATING ELECTRICAL R-22 COMP. DATA* TEMP. °F. PRESSURES RATINGS REFRIG. OIL Cooling DISCHARGE TEMP. SUCTION DISCHARGE AMPS LOCKED CHARGE IN CHARGE IN

AIR DROP °F ROTOR AMPS OZ. FLUID OZ.

KS10J101, KS10J103 61.0 19.0 79.0 269 9.1 48.3 21.0 11.8

KS12J101, KS12J103 57.0 23.0 78.0 288 10.8 54.0 25.0 11.8

KS12J30A1, KS12J30A3 57.0 23.0 79.0 293 26.3 26.5/24.0 11.8

KM14J10B1 54.78 22.52 75.0 280 67.0 40.0 32.0

KM18J30A2 KM18J30A3 56.0 24.0 73.0 262 42.0 42.0 13.9

KM21J304 56.0 24.0 75.0 260 56.0 46.0 32.0

KL25J30A1, KL25J30A3 55.0 25.0 68.5 300 71.0 53/57 32.0

* Rating Conditions:80°F. Room Air Temperature and 50% Relative Humidity with

95°F. Outside Air Temperature at 40% Relative Humidity.

5.8

6.2

12.0

8.3

9.1

10.5

11.3

13.5

15.0

Page 11

SPECIFICATIONS RS10J101 RS10J103 RS12J101 RS12J103 RS15J301 RM15J101 RM18J302 RM18J303

BTUH 15,000 18,500 18,500

10,000 10,000 12,000 12,000 15,000 14,500 18,300 18,300

E.E.R. 11.0 11.0 10.5 10.5 9.6 10.5 10.0 10.0

10.0 10.0

Volts 115 115 115 115 230 115 230 230

208 208 208 208

Amperes 8.3 8.3 10.2 10.2 6.9 12.0 8.4 8.4

7.5 9.0 9.0

Total Watts 910 910 1145 1145 1565 1380 1850 1850

1565 1380 1830 1830

Hertz 60 60 60 60 60 60 60 60

Fuse/Breaker Size 15 15 15 15 15 15 15 15

Fan RPM 1180 1180 1115 1115 1080 1180 1120 1120

Evaporator Air CFM 300 300 325 325 330 400 425 425

Fresh Air CFM Yes Yes Yes Yes Yes Yes Yes Yes

Exhaust Air CFM Yes Yes Yes Yes Yes Yes Yes Yes

Dehumidification Pts/HR 2.6 2.6 3.5 3.5 5.0 3.7 5.7 5.7

Width 25-15/16" 25-15/16" 25-15/16" 25-15/16" 25-15/16" 25-15/16" 25-15/16" 25-15/16"

Height 15-15/16" 15-15/16" 15-15/16" 15-15/16" 15-15/16" 17-15/16" 17-15/16" 17-15/16"

Depth 27-3/8" 27-3/8" 27-3/8" 27-3/8" 27-3/8" 27-3/8" 27-3/8" 27-3/8"

Minimum Ext. Into Room 3-1/16" 3-1/16" 3-1/16" 3-1/16" 3-1/16" 3-1/16" 3-1/16" 3-1/16"

Minimum Ext. to Outside 16-15/16" 16-15/16" 16-15/16" 16-15/16" 16-15/16" 16-15/16" 16-15/16" 16-15/16"

Net Weight 115 115 114 114 11.9 128 163 163

Shipping Weight 125 125 124 125 128 138 173 173

PERFORMANCE EVAPORATOR AIR OPERATING ELECTRICAL R-22 COMP. DATA* TEMP. °F. PRESSURES RATINGS REFRIG. OIL Cooling DISCHARGE TEMP. SUCTION DISCHARGE AMPS LOCKED CHARGE IN CHARGE IN

AIR DROP °F ROTOR AMPS OZ. FLUID OZ.

RS10J10-1, RS10J10-3 61.0 19.0 79.0 269 7.5 44.0 25/24 11.8

RS12J10, RS12J10-3 57.0 23.0 78.0 266 10.2 54.0 25.0 11.8

RS15J301 57.0 23.0 72.0 293 42.0 32.0 11.8

RM18J302, RM18J303 56.0 24.0 73.0 262 42.0 47/43 13.9

RM15J10-1 56.35 23.65 74.0 260 11.4 67.0 40.0 11.8

6.9

8.3

9.1

* Rating Conditions: 80°F. Room Air Temperature and 50% Relative Humidity with

95°F. Outside Air Temperature at 40% Relative Humidity.

Page 12

SPECIFICATIONS YS09J10-1 YS13J33-1 YM18J34A-2 YL24J35A-1

BTUH (Cooling) 9000 13000 17500 24000

13000 17500 23800

BTUH (Heating) 8300 12400 16500 23000

12300 16300 22800

E.E.R. (Cooling) 11.5 9.8 9.4 9.0

9.8 9.4 9.0

E.E.R. (Heating) 11.0 9.4 9.6 9.8

9.4 9.6 9.8

Volts 115 230 230 230

208 208 208

Amperes (Cooling) 7.2 6.0 8.3 12.0

6.5 9.1 13.0

Amperes (Heating) 6.7 6.0 7.6 10.4

6.5 8.3 11.5

Total Watts (Cooling) 760 1325 1860 2665

1325 1860 2645

Hertz 60 60 60 60

Fuse/Breaker Size 15 20 30 30

Amps 16.0 19.5 24.0

14.7 17.0 22.4

Watts 3500 4200 5500

2900 3500 4650

BTUH 10700 13000 17300

Resistance

Fan RPM 1110 1110 1120 1120

Heater

Evaporator Air CFM 300 325 425 600 Exhaust Air CFM Yes Yes Yes Yes Dehumidification Pts/Hr 1.7 3.5 5.2 7.0 Width 2515/16" 2515/16" 2515/16" 28" Height 1515/16" 1515/16" 1715/16" 203/16" Depth 273/8" 273/8" 273/8" 335/8" Minimum Ext. Into Room 31/16" 31/16" 31/16" 33/16" Minimum Ext. to Outside 1615/16" 1615/16" 1615/16" 1815/16" Net Weight 113 117 166 198 Shipping Weight 124 128 153 217

8900 10600 14300

PERFORMANCE EVAPORATOR AIR OPERATING ELECTRICAL R-22 COMP. DATA* TEMP. °F. PRESSURES RATINGS REFRIG. OIL Cooling DISCHARGE TEMP. SUCTION DISCHARGE AMPS LOCKED CHARGE IN CHARGE IN

AIR DROP °F ROTOR AMPS OZ. FLUID OZ.

YS09J10-1

YS13J33-1 56.0 24.0 75.0 280 6.0 29.0 30.0 11.8

YM18J34A-2 53.0 27.0 74.0 277 8.7 42.0 54.0 30.0

YL24J35A-1 55.0 25.0 77.0 272 12.0 61.0 69.0 32.0

* Rating Conditions: 80°F Room Air Temperature and 50% Relative Humidity with

95°F Outside Air Temperature at 40% Relative Humidity.

59.0 21.0 87.0 241 7.2 39.2 28.0 11.8

6.5

9.3

13.0

Page 13

PERFORMANCE DATA *YS09J10-1 **YS13J33-1 **YM18J34A-2 **YL24J35A-1 (Heating)

AHAM @ 70°F Inside 47°F Outside 8300 12400/12300 17200/17200 23000/22800

@ 70°F Inside 35°F Outside 10700/8900 13000/10600 17300/14300

Evaporator Air Temperature Rise

@ 70°F Inside 47°F Outside 19.62 31.38 24.74 31.71 @ 70°F Inside 35°F Outside 28.69/23.87 24.46/20.22 24.38/20.16

AMPS @ 70°F Inside 47°F Outside 6.7 6.0/6.5 8.5/9.0 10.4/11.5

@ 70°F Inside 35°F Outside 16.0/14.7 19.5/17.0 24.0/22.4

Watts @ 70°F Inside 47°F Outside 760 1340/1300 1880/1820 2350/2340

@ 70°F Inside 35°F Outside 3500/2900 5500/4650 5500/4650

Suction/Head PSIG

@ 70°F Inside 47°F Outside 53.5/222 52.5/251 53/225 54/236.5

* Do not operate below 37° ambient. ** Heating element comes on at 35°F outside ambient and compressor shuts off.

Page 14

SPECIFICATIONS ES12J33-1 ES15J33A-1 EM18J34A-2 EL24J35A-1 EL33J35-2 EK12J33A-1 EK18J34A-2

ES12J33-3 EM18J34A-3EL24J35A-2 EK12J33A-3 EK18J34A-3

BTUH (Cooling) 12000 15000 18500 24000 33000 12500 18000

BTUH (Heating) 10700 10700 13000 17300 17300 10700 13000

E.E.R. (Cooling) 10.5 9.6 10.0 9.5 9.0 10.0 9.6

E.E.R. (Heating)

12000 15000 18300 24000 32500 12500 18000

8900 8900 10600 14300 14300 8900 10600

11.0 9.6 10.0 9.4 9.0 10.0 9.6

Volts 230 230 230 230 230 230 230

Amperes (Cooling) 5.5 6.9 8.4 12.0 17.0 5.8 8.3

Amperes (Heating) 16.0 16.0 19.5 24.0 24.0 16.0 19.5

Total Watts (Cooling) 1145 1665 1850 2610 3670 1250 1875

Hertz 60 60 60 60 60 60 60 Fuse/Breaker Size 20 20 30 30 30 20 30 Fan RPM 1120 1100 1120 1100 1100 1080 1120 Evaporator Air CFM 325 330 425 560 700 325 440 Fresh Air CFM Yes Yes Yes Yes Yes Yes Yes Exhaust Air CFM Yes Yes Yes Yes Yes Yes Yes Dehumidification Pts/Hr 3.5 5.0 5.7 7.7 11.0 3.5 5.5 Width 25 15/16" 25 15/16" 25 15/16" 28" 28" 25 15/16" 25 15/16" Height 15 15/16" 15 15/16" 17 15/16" 20 3/16" 20 3/16" 15 15/16" 17 15/1 Depth 27 3/8" 27 3/8" 27 3/8" 33 5/8" 33 5/8" 27 3/8" 27 3/8" Minimum Ext. Into Room 3 1/16" 3 1/16" 3 1/16" 3 3/16" 3 3/16" 3 1/16" 3 1/16" Minimum Ext. to Outside 16 15/16" 16 15/16" 16 15/16" 18 15/16" 18 15/16" 16 15/16" 16 15/16" Net Weight 111 116 160 191 215 108 158

208 208 208 208 208 208 208

5.7 7.5 9.0 13.3 18.0 6.2 9.1

14.7 14.7 17.0 22.4 22.4 14.7 17.0

1090 1655 1830 2640 3610 1250 1875

PERFORMANCE EVAPORATOR AIR OPERATING ELECTRICAL R-22 COMP. DATA* TEMP. °F. PRESSURES RATINGS REFRIG. OIL Cooling DISCHARGE TEMP. SUCTION DISCHARGE AMPS LOCKED CHARGE IN CHARGE IN

AIR DROP °F ROTOR AMPS OZ. FLUID OZ.

ES12J33-1 58.0 22.0 77.5 266 5.5 26.3 25.0 11.8 ES12J33-3 5.7 26.3 26.0 11.8

ES15J33A-1 53.0 27.0 77.0 260 7.4 42.0 32.0 30.0

EM18J34A-2 55.0 25.0 73.0 262 8.2 42.0 47.0 30.0 EM18J34A-3 8.7 42.0 43.0 30.0 EL24J35A-1 55.0 25.0 73.5 280 12.0 61.0 53.0 32.0 EL24J35A-3 13.3 57.0 32.0 EL33J35-2 52.0 28.0 71.0 299 17.0 94.0 78.0 35.0

EK12J33A-1 57.0 23.0 79.0 293 5.8 26.3 26.5 11.8 EK12J33A-3 6.2 26.3 24.0 11.8 EK18J34A-2 55.0 25.0 73.0 262 8.2 42.0 46.0 30.0 EK18J34A-3 42.0 42.0 30.0

* Rating Conditions:80°F Room Air Temperature and 50% Relative Humidity with

95°F Outside Air Temperature at 40% Relative Humidity.

8.2

18.0

PERFORMANCE DATA VOLTS BTUH CFM HEAT RISE Heating HIGH SPEED

ES12J33-1 230 10700 1120 30.5 ES12J33-3 208 8900 ES15J33A-1 230 10700 1100 30.5

EM18J34A-2 230 13000 1120 28.3 EM18J34A-1 208 10600 EL24J35A-1 230 17300 1100 28.6 EL24J35A-3 208 14300 EL33J35 230 17300 1110 22.8

EK12J33A-1 230 10700 1080 30.5 EK12J33A-3 208 8900 EK18J34A-2 230 13000 1120 27.5 EK18J34A-3 208 10600

208 8900

208 14300

Page 15

SS08J10R1 SS09J10A1 SS10J10R1 SS12J10R1 SS12J30A1

SPECIFICATIONS

SS08J10A1 SS10J10A1 SS12J10A1 SS12J30A

SS12J10A3

BTUH 8200 9200 10200 12000 12000

12000

E.E.R. 10.8 11.55 11.7 10.5 10.5

Volts 115 115 115 115 230/208

Amperes 6.7 7.2 7.5 10.2 5.5/5.7

Total Watts 745 800 870 1145 1145

1090

Hertz 60 60 60 60 60

Fuse/Breaker Size 15 15 15 15 15

Fan RPM 1110 1110 1095 1120 1110

Evaporator Air CFM 310 300 300 325 325

Fresh Air CFM Yes Yes Yes Yes Yes

Exhaust Air CFM Yes Yes Yes Yes Yes

Dehumidification Pts/HR 2.0 1.7 2.6 3.5 3.5

Width 25-15/16" 25-15/16" 25-15/16" 25-15/16" 25-15/16"

Height 15-15/16" 15-15/16" 15-15/16" 15-15/16" 15-15/16"

Depth 27-3/8" 27-3/8" 27-3/8" 27-3/8" 27-3/8"

Minimum Ext. Into Room 3-1/16" 3-1/16" 3-1/16" 3-1/16" 3-3/16"

Minimum Ext. to Outside 16-15/16" 16-15/16" 16-15/16" 16-15/16" 16-15/16"

Net Weight 108 113 115 114 114

Shipping Weight 118 123 125 127 2127

PERFORMANCE EVAPORATOR AIR OPERATING ELECTRICAL R-22 COMP. DATA* TEMP. °F. PRESSURES RATINGS REFRIG. OIL Cooling DISCHARGE TEMP. SUCTION DISCHARGE AMPS LOCKED CHARGE IN CHARGE IN

AIR DROP °F ROTOR AMPS OZ. FLUID OZ.

SS08J10R1

SS08J10A-1 61.4 18.6 86.5 262 6.7 33.0 24 11.8

SS09J10A-1 57.8 22.2 84.0 251 7.2 39.2 26.0 11.8

SS10J10R-1

SS10J10A-1 57.22 22.78 77.5 266 10.2 54.0 32.0 11.8

SS12J10R-1

SS12J10A-1 57.22 22.78 77.5 266 10.2 54.0 25.0 11.8

SS12J10A-3

SS12J30A-1 57.2 22.8 77.0 260 5.5 56.3 26.0 11.8

SS12J30A-3 5.7

* Rating Conditions: 80°F. Room Air Temperature and 50% Relative Humidity with

95°F. Outside Air Temperature at 40% Relative Humidity.

Page 16

SPECIFICATIONS

SM18J30A3 SL24J30A1

BTUH 14000 15000 18200 21000 24000 28000 33000

15000 18000 20500 24000 27500 32500

E.E.R. 10.5 9.6 10.0 9.0 9.1 8.9 9.0

9.6 10.0 9.0 8.9 9.0 9.0

Volts 115 230 230 230 230 230 230

208 208 208 208 208 208

Amperes 12.0 6.9 8.4 10.6 12.0 14.0 17.0

7.5 9.0 11.4 13.3 15.5 18.0

Total Watts 1335 1565 1850 2333 2610 3110 3670

1555 1830 2278 2640 3090 3640

Hertz 60 60 60 60 60 60 60

Fuse/Breaker Size 15 15 15 20 20 20 20

Fan RPM 1110 1110 1120 1120 1100 1100 1110

Evaporator Air CFM 400 325 425 440 560 600 700

Fresh Air CFM Ye s Ye s Ye s Ye s Yes Yes Ye s

Exhaust Air CFM Ye s Ye s Ye s Ye s Yes Yes Ye s

Dehumidification Pts/HR 3.7 5.0 5.7 7.0 7.7 8.8 11.0

SM14J10B1 SS15J30A1 SM18J30A2 SM21J30A4 SL24J30A3 SL28J30A SL33J302

Width 25-15/16" 25-15/16" 25-15/16" 25-15/16" 28" 28" 28"

Height 17-15/16" 15-15/16" 17-15/16" 17-15/16" 20-3/16" 20-3/16" 20-3/16"

Depth 27-3/8" 27-3/8" 27-3/8" 27-3/8" 33-5/8" 33-5/8" 33-5/8"

Minimum Ext. Into Room 3-1/16" 3-1/16" 3-1/16" 3-3/16" 3-3/16" 3-3/16" 3-3/16"

Minimum Ext. to Outside 16-15/16" 16-15/16" 16-15/16" 16-15/16" 18-15/16" 18-15/16" 18-15/16"

Net Weight 128 124 138 183 192 201 216

Shipping Weight 140 134 150 203 212 221 236

PERFORMANCE EVAPORATOR AIR OPERATING ELECTRICAL R-22 COMP. DATA* TEMP. °F. PRESSURES RATINGS REFRIG. OIL Cooling DISCHARGE TEMP. SUCTION DISCHARGE AMPS LOCKED CHARGE IN CHARGE IN

AIR DROP °F ROTOR AMPS OZ. FLUID OZ.

SM14J10B1 56.34 23.66 84.0 245 67.0 40.0 14.3

SS15J30A1 54.35 25.65 72.0 292 42.0 32.0 13.9

SM18J30A2, 54.56 25.44 74.0 265 33.0 47.0 11.8 SM18J30A3 43.0

SM21J30A4 52.58 27.42 75 290 61 46 32.0

12.0

6.9

7.5

8.4

9.0

10.6

11.4

SL24J30A1. 54.86 25.14 73.5 280 61.0 53. 32.0 SM24J30A3 57.0

SL28J30A1 52.32 27.68 74.0 291 69.5 87.0 32.0

SL33J302 52.93 27.07 71.0 299 94.0 78 35.0

12.0

13.3

14.0

15.5

17.0

18.0

* Rating Conditions:80°F. Room Air Temperature and 50% Relative Humidity with

95°F. Outside Air Temperature at 40% Relative Humidity.

Page 17

SPECIFICATIONS WS07A10D WS09A10D WS12A10D WS09A30D WS12A30D WS13A30D

BTUH 7000 9000 11500 9000 11500 12500

8800 11300 12300

E.E.R. 9.5 9.2 9.0 9.2 9.0 8.7

9.0 9.0 8.7

Volts 115 115 115 230 230 230

208 208 208

Amperes 6.7 9.0 11.5 4.5 5.7 6.3

4.9 6.3 6.8

Total Watts 740 980 1280 980 1280 1440

980 1255 1415

Hertz 60 60 60 60 60 60

Fuse/Breaker Size 15 15 15 15 15 15

Fan RPM 1145 1140 1275 1140 1275 1275

Evaporator Air CFM 260 260 290 260 290 250

Fresh Air CFM

Exhaust Air Yes Yes Yes Yes Yes Yes

Dehumidification Pts/Hr 1.4 2.1 2.9 2.1 2.9 4.0

Width 27" 27" 27" 27" 27" 27"

Height 16-3/4" 16-3/4" 16-3/4" 16-3/4" 16-3/4" 16-3/4"

Depth 16-3/4" 16-3/4" 16-3/4" 16-3/4" 16-3/4" 16-3/4"

Minimum Ext. Into Room 7-1/2" 7-1/2" 7-1/2" 7-1/2" 7-1/2" 7-1/2"

Minimum Ext. To Outside 9/16" 9/16" 9/16" 9/16" 9/16" 9/16"

Net Weight 75 85 94 83 91 101

Shipping Weight 93 103 112 101 109 119

PERFORMANCE DATA* Cooling

WS07A10D 59.5 19.5 82 280 6.7 32.0 19 11.8

WS09A10D 58.0 22.0 82 295 9.0 44.0 20 11.8

WS12A10D 55.0 25.0 76 295 11.5 54.0 36 11.8

WS09A30D 58.0 22.0 80 295 4.5 20.0 20 11.8

WS12A30D 55.0 25.0 76 295 5.7 26.3 36 11.8

WS13A30D 47.1 32.9 73 308 6.3 33.0 38 11.8

*Rating Conditions: 80°F. Room Air Temperature and 50% Relative Humidity with

EVAPORATOR AIR OPERATING ELECTRICAL R-22 COMP.

TEMP. °F. PRESSURES RATINGS REFRIG. OIL

DISCHARGE TEMP. SUCTION DISCHARGE AMPS LOCKED CHARGE IN CHARGE IN

AIR DROP °F. ROTOR AMPS OUNCES FLUID OZ.

4.9

6.3

6.8

95°F. Outside Air Temperature at 40% Relative Humidity.

Page 18

SPECIFICATIONS WE09A33D WE12A33D WE13A33D WY09A33D WY12A33E

BTUH (Cooling) 9000 11500 12500 9000 11300

8800 11300 12300 8800 10900

BTUH (Heating) 11000 11000 11000 8200 10800

9100 9100 9100 8200 10500

E.E.R. (Cooling) 9.2 9.0 8.7 9.0 8.6

9.0 9.0 8.7 9.0 8.5

E.E.R (Heating) 9.0 9.0

9.8 9.0

Volts 230 230 230 230 230

208 208 208 208 208

Amperes (Cooling) 4.5 5.7 6.3 4.5 5.8

4.9 6.3 6.8 4.8 6.2

Amperes (Heating) 16.0 16.0 16.0 3.8 5.4

14.7 14.7 14.7 4.1 5.7

Total Watts (Cooling) 480 1280 1440 1000 1315

980 1255 1415 980 1280

Total Watts (Heating) 3550 3550 3550 870 1200

2950 2950 2950 840 1165

Hertz 60 60 60 60 60

Fuse/Breaker Size 20 20 20 20 20

Amps 16.0 16.0

14.7 14.7

Resistance Heater

Fan RPM 1140 1275 1275 1140 1275

Evaporator Air CFM 260 290 250 270 290

Fresh Air CFM

Exhaust Air CFM Yes Yes Yes Yes Yes

Dehumidification Pts/Hr 2.1 2.9 4.0 2.1 2.9

Width 27" 27" 27" 27" 27" Height 16-3/4" 16-3/4" 16-3/4" 16-3/4" 16-3/4"

Depth 16-3/4" 16-3/4" 16-3/4" 16-3/4" 16-3/4"

Minimum Ext. Into Room 7-1/2" 7-1/2" 7-1/2" 7-1/2" 7-1/2"

Minimum Ext. To Outside 9/16" 9/16" 9/16" 9/16" 9/16"

Net Weight 84 92 102 86 94

Shipping Weight 103 111 121 107 116

Watts 3550 3550

2950 2950

BTUH 11000 11000

9100 9100

Page 19

PERFORMANCE DATA* Cooling

EVAPORATOR AIR OPERATING ELECTRICAL R-22 COMP.

TEMP. °F. PRESSURES RATINGS REFRIG. OIL

DISCHARGE TEMP. SUCTION DISCHARGE AMPS LOCKED CHARGE IN CHARGE IN

AIR DROP °F. ROTOR AMPS OUNCES FLUID OZ.

WE09A33D 58.0 22.0 80 295 4.5 20.0 20 11.8

4.9

WE12A33D 55.0 25.0 76 295 5.7 26.3 36 11.8

6.3

WE13A33D 47.1 32.9 73 308 6.3 33.0 38 11.8

6.8

WY09A33D 58.0 22.0 80 295 4.5 20.0 26 11.8

4.8

WY12A33E 55.0 25.0 76 295 5.8 26.3 43 11.8

6.2

*Rating Conditions: 80°F. Room Air Temperature and 50% Relative Humidity with

95°F. Outside Air Temperature at 40% Relative Humidity.

PERFORMANCE VOLTS BTUH CFM HEAT RISE DATA (Heating) HIGH SPEED

WE09A33D 230 11000 260 39.0

208 9100

WE12A33D 230 11000 290 35.0

208 9100

WE13A33D 230 11000 250 40.0

208 9100

Page 20

PERFORMANCE DATA *WY09A33D *WY12A33E (Heating)

BTUH @70°F Inside 62°F Outside 9700 12400

@70°F Inside 57°F Outside 9300 12000

@70°F Inside 52°F Outside 8800 11400

** @70°F Inside 47°F Outside 8200/8100 10800/10400

@70°F Inside 42°F Outside 7600 10000

@70°F Inside 37°F Outside 6800 9000

@70°F Inside 35°F Outside 11000/9100 11000/9100

Evaporator Air Temperature Rise

@70°F Inside 62°F Outside 32.00 37.60

@70°F Inside 57°F Outside 30.75 36.40

@70°F Inside 52°F Outside 29.10 34.50

** @70°F Inside 47°F Outside 27.10/26.80 32.70/31.50

@70°F Inside 42°F Outside 25.10 30.30

@70°F Inside 37°F Outside 22.50 27.30

@70°F Inside 35°F Outside 36.40/30.10 33.30/27.60

AMPS @70°F Inside 62°F Outside 4.0 5.6

@70°F Inside 57°F Outside 3.9 5.5

@70°F Inside 52°F Outside 3.85 5.4

** @70°F Inside 47°F Outside 3.8/4.1 5.3/5.6

@70°F Inside 42°F Outside 3.6 5.1

@70°F Inside 37°F Outside 3.4 4.8

@70°F Inside 35°F Outside 16.0/14.7 16.0/14.7

Watts @70°F Inside 62°F Outside 880 1280

@70°F Inside 57°F Outside 870 1260

@70°F Inside 52°F Outside 860 1220

** @70°F Inside 47°F Outside 835/810 1175/1155

@70°F Inside 42°F Outside 800 1130

@70°F Inside 37°F Outside 760 1070

@70°F Inside 35°F Outside 3550/2950 3550/2950

Suction/Head PSIG

@70°F Inside 62°F Outside 66/315 61/325

@70°F Inside 57°F Outside 62/285 59/290

@70°F Inside 52°F Outside 57/285 53/275

** @70°F Inside 47°F Outside 53/265 49/255

@70°F Inside 42°F Outside 49/215 45/240

@70°F Inside 37°F Outside 45/203 41/220

@70°F Inside 35°F Outside 44/200 40/215

* Heating Element comes on at 35°F outside ambient and compressor shuts off. ** AHAM Rating Conditions.

Page 21

Refrigeration SystemRefrigeration System

Refrigeration System

Refrigeration SystemRefrigeration System

Sequence of OperationSequence of Operation

Sequence of Operation

Sequence of OperationSequence of Operation

A good understanding of the basic operation of the refrigeration system is essential for the service technician. Without this understanding, accurate troubleshooting of refrigeration system problems will be more difficult and time consuming, if not (in some cases) entirely impossible. The refrigeration system uses four basic principles (laws) in its operation they are as follows:

1. "Heat always flows from a warmer body to a cooler body."

2. "Heat must be added to or removed from a substance before a change in state can occur"

3. "Flow is always from a higher pressure area to a lower pressure area."

4. "The temperature at which a liquid or gas changes state is dependent upon the pressure."

The refrigeration cycle begins at the compressor. Starting the compressor creates a low pressure in the suction line which draws refrigerant gas (vapor) into the compressor. The compressor then "compresses" this refrigerant, raising its pressure and its (heat intensity) Temperature.

The refrigerant leaves the compressor through the discharge line as a hot high pressure gas (vapor). The refrigerant enters the condenser coil where it gives up some of its heat. The condenser fan moving air across the coil's finned surface facilitates the transfer of heat from the refrigerant to the relatively cooler outdoor air.

When a sufficient quantity of heat has been removed from the refrigerant gas (vapor), the refrigerant will "condense" (i.e. change to a liquid). Once the refrigerant has been condensed (changed) to a liquid it is cooled even further by the air that continues to flow across the condenser coil.

The RAC design determines at exactly what point (in the condenser) the change of state (i.e. gas to a liquid) takes place. In all cases, however, the refrigerant must be totally condensed (changed) to a liquid before leaving the condenser coil.

The refrigerant leaves the condenser coil through the liquid line as a warm high pressure liquid. It next will pass through the refrigerant drier (if so equipped). It is the function of the drier to trap any moisture present in the system, contaminants, and large particulate matter.

The liquid refrigerant next enters the metering device. The metering device is a capillary tube. The purpose of the metering device is to "meter" (i.e. control or measure) the quantity of refrigerant entering the evaporator coil.

In the case of the capillary tube this is accomplished (by design) through size (and length) of device, and the pressure difference present across the device.

Since the evaporator coil is under a lower pressure (due to the suction created by the compressor) than the liquid line, the liquid refrigerant leaves the metering device entering the evaporator coil. As it enters the evaporator coil, the larger area and lower pressure allows the refrigerant to expand and lower its temperature (heat intensity). This expansion is often referred to as "boiling". Since the unit's blower is moving Indoor air across the finned surface of the evaporator coil, the expanding refrigerant absorbs some of that heat. This results in a lowering of the indoor air temperature, hence the "cooling" effect.

The expansion and absorbing of heat cause the liquid refrigerant to evaporate (i.e. change to a gas). Once the refrigerant has been evaporated (changed to a gas), it is heated even further by the air that continues to flow across the evaporator coil.

The particular system design determines at exactly what point (in the evaporator) the change of state (i.e. liquid to a gas) takes place. In all cases, however, the refrigerant must be totally evaporated (changed) to a gas before leaving the evaporator coil.

The low pressure (suction) created by the compressor causes the refrigerant to leave the evaporator through the suction line as a cool low pressure vapor. The refrigerant then returns to the compressor, where the cycle is repeated.

Suction Line

Evaporator Coil

Refrigerant Strainer

Metering Device

Refrigerant Drier

Discharge Line

Condenser Coil

Compressor

Liquid Line

Page 22

Electrical Rating TElectrical Rating T

Electrical Rating T

Electrical Rating TElectrical Rating T

Circuit Rating Plug Face Appearance

Model Breaker or T-D Fuse (NEMA#) (Facing Blades)

ALL KQ, SQ and XQ MODELS,

KS10J10, KS12J10A, KM14J10, RS10J10, RS12J10A, RM14J10, SS08J10R, SS09J10B, SS10J10R, SS12J10AR, SM14J10R, SC06H10D, 125V - 15A 5 - 15P YQ06J10A, YS09J10,WS07A10D, WS09A10D, WS12A10D

KS12J30A, KM18J30B, RS16J30, RM19J30, SS12J30B, SS16J30, 250V - 15A 6 - 15P SM19J30R, WS09A30D, WS12A30D, WS13A30D

KM21J30, KL25J30A, SM21J30B, SL24J30A, SL28J30A*, ES12J33, EK12J33A, ES16J33, YS13J33, WE09A33D, WE12A33D, 250V - 20A 6 - 20P WE13A33D, WY09A33D, WY12A33E

SL33J30, EM19J34, EK18J34B, EL24J35A, EL33J35, YM18J34A, YL24J35A 250V - 30A 6 - 30P

* Optional 30 Amp Kit (618-869-00) is recommended in 208 Volt power supply areas that fall below 208 Volts. For more information, call the Friedrich Service Department. Due to a program of continuing improvement, specifications are subject to change without notice.

ablesables

ables

ablesables

Wire Size Use ONLY wiring size recommended for

single outlet branch circuit.

Fuse/Circuit Use ONLY type and size fuse or HACR Breaker circuit breaker indicated on unit's rating

plate. Proper current protection to the unit is the responsibility of the owner.

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.

INSTALLATION NOTES:

Supply Cord - All with right angle plug 6' on 115V; 5' on 230/208V. Room air conditioners include accessories for window or thru-wall installation. TwinTemp models include accessories for thru-wall installation. Window mounting requires use of optional accessory kit as listed below:

Electric shock hazard.Electric shock hazard.

Electric shock hazard.

Electric shock hazard.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 property damage, personal injury and/or death.

FRIEDRICH AIR CONDITIONING COFRIEDRICH AIR CONDITIONING CO

FRIEDRICH AIR CONDITIONING CO

FRIEDRICH AIR CONDITIONING COFRIEDRICH AIR CONDITIONING CO

Post Office Box 1540 • San Antonio, Texas 78295-1540 4200 N. Pan Am Expressway • San Antonio, Texas 78218-5212 (210) 357-4400 • FAX (210) 357-4480 Visit us on the Internet at www.friedrich.com

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.

Page 23

COMPONENTS OPERATION

& TESTING

WARNING

DISCONNECT ELECTRICAL POWER TO UNIT BEFORE SERVICING OR TESTING

COMPRESSORS

Compressors are single phase, 115 or 230/208 volt, depending on the model unit. All compressor motors are permanent split capacitor type using only a running capacitor across the start and run terminal.

All compressors are internally spring mounted and externally mounted on rubber isolators.

WINDING TEST

Remove compressor terminal box cover and disconnect wires from terminals. Using an ohmmeter, check continuity across the following: (See Figure 1)

GROUND TEST

Use an ohmmeter set on its highest scale. Touch one lead to the compressor body (clean point of contact as a good connection is a must) and the other probe in turn to each compressor terminal (see Figure 2.) If a reading is obtained, the compressor is grounded and must be replaced.

Figure 2

Typical Ground Test

1. Terminal "C" and "S" - no continuity - open winding replace compressor.

2. Terminal "C" and "R" - no continuity - open winding replace compressor.

3. Terminal "R" and "S" - no continuity - open winding replace compressor.

Figure 1

Compressor Winding Test

CHECKING COMPRESSOR EFFICIENCY

The reason for compressor inefficiency is normally due to broken or damaged suction and/or discharge valves, reducing the ability of the compressor to pump refrigerant gas.

This condition can be checked as follows:

1. Install a piercing valve on the suction and discharge or liquid process tube.

2. Attach gauges to the high and low sides of the system.

3. Start the system and run a “cooling or heating performance test.”

If test shows:

A. Below normal high side pressure.

B. Above normal low side pressure.

C. Low temperature difference across coil.

The compressor valves are faulty - replace the compressor.

THERMAL OVERLOAD (External)

Some compressors are equipped with an external overload which is located in the compressor terminal box adjacent to the compressor body (See Figure 3.)

Page 24

The overload is wired in series with the common motor terminal. The overload senses both major amperage and compressor temperature. High motor temperature or amperage heats the disc causing it to open and break the circuit to the common motor terminal.

CHECKING THE INTERNAL OVERLOAD

(See Figure 4)

Figure 4

Internal Overload

Figure 3

Heat generated within the compressor shell is usually due to:

1. High amperage.

2. Low refrigerant charge.

3. Frequent recycling.

External Overload

1. With no power to unit, remove the leads from the compressor terminals.

2. Using an ohmmeter, test continuity between terminals C-S and C-R. If not continuous, the compressor overload is open and the compressor must be replaced.

4. Dirty condenser.

TERMINAL OVERLOAD - TEST

(Compressor - External Type)

1. Remove overload.

2. Allow time for overload to reset before attempting to test.

3. Apply ohmmeter probes to terminals on overload wires. There should be continuity through the overload.

TERMINAL OVERLOAD (Internal)

Some model compressors are equipped with an internal overload. The overload is embedded in the motor windings to sense the winding temperature and/or current draw. The overload is connected in series with the common motor terminal.

Should the internal temperature and/or current draw become excessive, the contacts in the overload will open, turning off the compressor. The overload will automatically reset, but may require several hours before the heat is dissipated.

FAN MOTOR

A single phase permanent split capacitor motor is used to drive the evaporator blower and condenser fan. A self-resetting overload is located inside the motor to protect against high temperature and high amperage conditions. (See Figure 5)

Page 25

Figure 5

FAN MOTOR - TEST

1. Determine that capacitor is serviceable.

Fan Motor

Figure 6

System Control

Panel

(SQ Models Only)

SYSTEM CONTROL SWITCH (SQ Models)

(See Figure 6)

2. Disconnect fan motor wires from fan speed switch or system switch.

3. Apply "live" test cord probes on black wire and common terminal of capacitor. Motor should run at high speed.

4. Apply "live" test cord probes on red wire and common terminal of capacitor. Motor should run at low speed.

5. Apply "live" test cord probes on each of the remaining wires from the speed switch or system switch to test intermediate speeds. If the control is in the

"MoneySaver" mode and the thermostat calls for cooling, the fan will start - then stop after approximately 2 minutes; then the fan and compressor will start together approximately 2 minutes later.

Figure 7

SYSTEM SWITCH

(SQ Only)

A five-position control switch is used to regulate the operation of the fan motor and compressor. The compressor can be operated with the fan operating at low, medium or high speed. The fan motor can also be operated independently on medium speed. See switch section as indicated on the decorative control panel.

SYSTEM CONTROL SWITCH - TEST (See Figure 7)

Disconnect the leads from the control switch. There must be continuity as follows:

1. "Off" Position - no continuity between terminals.

2. "Lo Cool" Position - between terminals "L1" and "C", "Lo" and MS".

3. "Med Cool" Position - between terminals "L1" and "C", "M" and "MS".

4. "Hi Cool" Position - between terminals L1" and "C", "H" and "MS".

5. "Fan Only" Position - between terminals "L1" and "2".

RESISTOR (Heat Anticipator) (SQ Only)

Failure of the resistor will cause prolonged "off" and "on" cycles of the unit. When replacing a resistor, be sure and use the exact replacement. Resistor rating 115 Volts 12500 ohm, 1.05 watts.

Page 26

Figure 8

ROCKER SWITCH

1. "Off" - Turns everything off.

2. "Hi Fan" - Maximum circulation of filtered room air (no cooling.)

3. "Low Fan" - Fan runs slower for less circulation of filtered room air.

4. "Low Cool" - Fan runs slowly for quiet operation when maximum cooling is not needed.

5. "Hi Cool" - Highest fan speed for maximum cooling.

MONEYSAVER® SWITCH

(Rocker Switch) (See Figure 8)

This rocker switch can be depressed to either YES or NO. In the YES position you will get the most economical operation. Both the fan and the compressor will cycle on and off together, maintaining the selected temperature at a more constant level and reducing the humidity more efficiently. This control will only operate when the unit is in a cooling mode. In the NO position, the fan will run constantly as long as the unit is in the cooling mode. Disconnect leads from switch. Depress switch to function being tested.

1. When YES is depressed, there should be continuity between terminals "1" and "2."

2. When NO is depressed, there should be continuity between terminals "2" and "3."

SYSTEM CONTROL SWITCH

("KQ" Models Only) (See Figure 9)

The KQ Model unit uses a five position control switch to regulate the operation of the unit. Function of each position (clockwise rotation) is as follows:

Figure 10

SYSTEM CONTROL SWITCH - TEST

(See Figure 19)

Turn knob to phase of switch to be tested. There must be continuity as follows:

System Control Switch

("KQ" Models Only)

Figure 9

System Control Panel

("KQ" Models Only)

1. "Hi Fan" Position - between terminals "L1" and "H".

2. "Low Fan" Position - between terminals "L1" and "L".

3. "Low Cool" Position - between terminals "L1" and "L" and "C".

4. "Hi Cool" Position - between terminals "L1" and "H" and "C".

Page 27

SYSTEM CONTROL SWITCH

("YQ" Model Only) (See Figure 11)

The YQ Model unit uses a six position control switch to regulate the operation of the unit (see Figure 9). Function of each position (Clockwise rotation) is as follows:

Figure 12

System Control Switch

("YQ" Models Only)

Figure 11

SYSTEM CONTROL PANEL

("YQ" Model Only)

1. "Off" - Turns everything off.

2. "Fan Only" - To circulate filtered room air, but no cooling or heating.

3. "Hi Cool" - Fan runs continuously, compressor goes on and off to maintain the selected room temperature.

5. "Hi Heat" Position - between terminals "C" and "1", and "C" and "4".

ROTARY (SYSTEM) SWITCH ("SC" Model) (See Figure 13)

A rotary four position switch is used to turn on the unit and select the operation desired. Switch selection is as follows:

Figure 13

SYSTEM CONTROL PANEL

("SC" Model Only)

4. "Lo Cool" - Fan runs continuously, compressor goes on and off to maintain the selected room temperature.

5. "Lo Heat" - Fan Runs continuously, heating turns on and off to maintain the selected room temperature.

6. "Hi Heat" - Fan Runs continuously, heating turns on and off to maintain the selected room temperature.

SYSTEM CONTROL SWITCH - TEST (See Figure 12)

Turn knob to phase of switch to be tested. There must be continuity as follows:

1. "Fan Only" Position - between terminals "C" and "1".

2. "Hi Cool" Position - between terminals "C" and "1", "C" and "3".

3. "Lo Cool" Position - between terminals "C" and "2", and "C" and "3".

4. "Lo Heat" Position - between terminals "C" and "2", and "C" and "4".

1. "Hi Cool" Turns on the compressor and fan at high speed

2. "Lo Cool" Turns on the compressor and fan at low speed.

3. "Fan Only" Turns on the fan at high speed.

4. "Off" Turns everything off.

The switching arrangement of the control is as follows: (See Figure 14.)

1. "Off" All contacts open.

2. "Hi Fan

Contacts closed between terminals "L1" and

"1".

Page 28

3. "Hi Cool" Contacts closed between terminals "L1" to "1" and "L1" and "C".

4. "Lo-Cool" Contacts are closed between terminals "L1" to "2" and "L1 to "C".

Figure 15

System Control Panel

WS Models

Figure 14

1. Disconnect leads from control switch.

2. Check continuity between all switch positions shown in Figure 14.

SYSTEM CONTROL SWITCH

("WS" Models) (See Figure 15)

A five position control switch is used to regulate the operation of the fan motor and compressor. The compressor can be operated with the fan operating at low, medium or high speed. The fan motor can also be operated independently on medium speed. See switch section as indicated on decorative control panel

SYSTEM CONTROL SWITCH

(SC Model Only)

Figure 16

System Control

Switch

WS Models

SYSTEM CONTROL SWITCH

("WE" & "WY" Models) (See Figure 17)

An eight position switch is used to regulate the operation of the fan motor, compressor and electric heater. The unit can be operated in cooling or heating mode with the compressor or electric heater on and the fan motor operating on low, medium or high speed.

SYSTEM CONTROL SWITCH - TEST

Disconnect leads from control switch (See Figure 16.) There must be continuity as follows:

1. "Off" Position - no continuity between terminals.

2. "Lo Cool" Position - between terminals "L1" and "C", "LO" and "MS."

3. "Med Cool" Position - between terminals "L1" and "C", "M" and "MS".

4. "Hi Cool" Position - between terminals "L1" and C", "H" and "MS."

5. "Fan Only" Position - between terminals "L1" and "2."

The fan motor can also be operated independently on medium speed. See switch section as indicated on decorative control panel.

Figure 17

System Control Panel

WE & WY Models

Page 29

SYSTEM CONTROL SWITCH - TEST (See Figure 18)

Disconnect leads from control switch. Turn control to position being tested. There must be continuity as follows:

1. "Off" Position-no continuity between terminals.

2. "Lo Cool" Position-between terminals "C" and "3", "C2" and "2", "LO" and "M/S", "AR" and "5".

3. "Med Cool" Position-between terminals "C" and "3", "C2" and "2", "M" and "M/S", "AR" and "5".

4. "Hi Cool" Position-between terminals "C" and "3", "C2" and "2", "H" and "M/S", "AR" and "5".

5. "Hi Heat" Position-between terminals "C" and "1", "C2" and "4", "H" and "M/S", "AR" and "5".

6. "Med Heat" Position-between terminals "C" and "1", "C2" and "4", "M" and "M/S", "AR" and "5".

7. "Lo Cool" Position-between terminals "C" and "1", "C2" and "4", "LO" and "M/S", "AR" and "5".

2. "Lo Cool" Position - between terminals "L1" and "C," "LO" and "MS."

3. "Med Cool" Position - between terminals "L1" and "C," "M" and "MS."

4. "Hi Cool" Position - between terminals "L1" and "C," "H"and "MS."

5. "Fan Only" Position - between terminals "L1" and "2."

Figure 19

System Control Panel -

Used by all Small, Medium and Large

chassis units (KS, SS, KM, SM, KL, SL)

8. "Fan Only" Position-between terminals "L1" and "M".

Figure 18

System Control Switch (WE & WY Models)

(Heat Pump & Electric Heat Models)

SYSTEM CONTROL SWITCH KS, SS, KM, SM, KL, SL

Models (See Figure 19)

Figure 20

System Control Switch

SYSTEM CONTROL SWITCH - TEST (See Figure 20)

Disconnect leads from control switch. There must be continuity as follows:

1. "Off" Position - no continuity between terminals.

Page 30

SYSTEM CONTROL SWITCH (See Figure 21)

A six-position control switch is used to regulate the operation of the fan motor and compressor. The compressor can be operated with the fan operating at low, medium or high speed. The fan motor can also be operated independently on medium speed. See switch section as indicated on decorative control panel.

Figure 23

System Control Switch

Figure 21

System Control Panel

Used on Deluxe Series (RS & RM)

SYSTEM CONTROL SWITCH (See Figure 23) (Heat Pump & Electric Heat Models)

An eight position control switch is used to regulate the operation of the fan motor and compressor. The compressor can be operated with the fan operating at low, medium or high speed in the cooling or heating mode. The fan motor can also be operated independently on medium speed. See switch section as indicated on decorative control panel.

1. "Off" Position - everything is off.

2. "Lo Cool" Position - fan operates on low speed, compressor is on.

3. "Med Cool" Position - fan operates on medium speed, compressor is on.

SYSTEM CONTROL SWITCH - TEST

Disconnect leads from control switch (See Figure 22.) There must be continuity as follows:

Figure 22

4. "Hi Cool" Position - fan operates on high speed, compressor is on.

5. "Hi Heat" Position - fan operates on high speed, compressor or electric heater is on.

6. "Med Heat" Position - fan operates on medium speed, compressor or electric heater is on.

Page 31

SYSTEM CONTROL SWITCH (See Figure 24) (Heat Pump & Electric Heat Models)

7. "Lo Heat" Position - fan operates on low speed, compressor or electric heater is on.

1. "Off" Position - everything is off.

2. "Lo Cool" Position - fan operates on low speed, compressor is on.

3. "Med Cool" Position - fan operates on medium speed, compressor is on.

4. "Hi Cool" Position - fan operates on high speed, compressor is on.

5. "Hi Heat" Position - fan operates on high speed, compressor or electric heater is on.

6. "Med Heat" Position - fan operates on medium speed, compressor or electric heater is on.

8. "Fan Only" Position - operates on medium speed.

NOTE: Heat pump models with electric heat - in the heat

position, heating element only will be energized when outdoor temperature is below the operating range of the heat pump.

Figure 25

SYSTEM CONTROL SWITCH - TEST (See Figure 25)

SYSTEM CONTROL SWITCH

(Heat Pump & Electric Heat Models)

Figure 24

SYSTEM CONTROL PANEL

(Heat Pump & Electric Heat Models)

All Small, Medium, & Large Chassis units.

(YS, ES, YM, EM, YL AND EL)

Disconnect leads from control switch. Turn control to position being tested. There must be continuity as follows:

1. "Off" Position - no continuity between terminals.

2. "Lo Cool" Position - between terminals "C" and "3", "C2" and "2", "LO" and "M/S", "AR" and "5".

3. "Med Cool" Position - between terminals "C" and "3", "C2" and "2", "M" and "M/S", "AR" and "5".

4. "Hi Cool" Position - between terminals "C" and "3", "C2" and "2", "H" and "M/S", "AR" and "5".

5. "Hi Heat" Position - between terminals "C" and "1", "C2" and "4", "H" and "M/S", "AR" and "5".

6. "Med Heat" Position - between terminals "C" and "1", "C2" and "4", "M" and "M/S", "AR" and "5".

7. "Lo Cool" Position - between terminals "C" and "1", "C2" and "4", "LO" and "M/S", "AR" and "5".

8. "Fan Only" Position - between terminals "L1" and "M".

Page 32

Smart Center Electronic Control Center:

(See Figure 26)

FILTER ALERT light will come on after 250 hours of use. Touch

FILTER ALERT to reset.

TO ADJUST TEMPERATURE

COOLER - Touch COOLER to see setting, touch again to change.

TO SET MODE OF OPERATION

When unit is first turned on, it will be in the COOL mode (light on), with constant fan.

Touch MONEYSAVER (light on) to activate the MoneySaver feature. (MoneySaver is a feature that cycles the fan with the compressor so that the fan does not run all the time. This saves energy and improves dehumidification.) If customer prefers a constant fan for more air movement, touch MONEYSAVER again and unit will return to constant fan.

Touch FAN ONLY (light on) and only the fan will run. This feature may be used in conjunction with the FRESH AIR/ EXHAUST lever to bring outside air into a room, or to exhaust stale air.

ELECTRONIC CONTROLFigure 26

WARMER - Touch WARMER to see setting, touch again to change.

Touch °F/°C to show desired temperature in Fahrenheit or Celsius.

TO ADJUST FAN SPEED

Touch SPEED to see current setting. Touch again to change speed. F1 is lowest setting (sleep setting), F2 is LOW, F3 is MED, and F4 is HIGH.

TO ACTIVATE SMART FAN

Touch SMART FAN (light on). Smart Fan will adjust the fan speed automatically to maintain the desired comfort level. For example, if the outside doors in the home are open for an extended period of time, or more people enter a room, Smart Fan may adjust to a higher fan speed to compensate for the increased heat load. This keeps from having to adjust the fan speed on your own, or from having to change the desired temperature you have selected. Smart Fan will also run to test temperature if the off cycle is long.

TO SET HOUR CLOCK

Touch SET HOUR CLOCK to see setting. To change, touch and hold until hour closest to the actual time appears in the display. MAKE SURE A.M. AND P.M. ARE SET PROPERLY. (Minutes will NOT show on display.)

TO SET THE TIMER

NOTE: SET HOUR CLOCK before attempting to set timer functions.

The TIMER ON/OFF times can be set a minimum of one hour apart and a maximum of twenty-three hours apart.

STOP TIME - Touch A/C STOP and hold until the hour the unit needs to shut off appears in the display A.M. or P.M.)

START TIME - Touch A/C START and hold until the hour the unit needs to come on appears in the display (A.M. or P.M.)

Touch TIMER ON (light on) to activate the timer function. Touch TIMER OFF (light off) to cancel the timer function desired. Once the on and off times have been selected, they will remain in memory, and cycle daily until changed, or until the unit is subject to a power interruption.

Page 33

TESTING THE ELECTRONIC CONTROL

2001 XQ BOARDS & QME BOARDS

Checking Room Temperature:

1. Check the room temperature at the electronic control pad by pressing the "FAN SPEED" button and the temperature "UP" button at the same time on XQ models.

2. Check the room temperature at the electronic control pad by pressing at the same time the "FAN SPEED" button and the "WARMER" button on QME models.

The indoor temperature will display for 10 seconds. Indoor temperature can be viewed in all modes, including the TEST mode. The display can be changed back to SET temperature by pressing any key, except the ON/OFF button, or after 10 seconds has elapsed.

Activating Test Mode: Activate test mode by pressing at the

same time the "MODE" button and the temperature "DOWN" button on XQ models. LEDs for Hour, Start, and Stop will blink 1 bps while Test Mode is active.

Activate test mode by pressing at the same time the "MONEY SAVER" button and the "FILTER ALERT" button on QME models. LED for the Filter Alert will blink 1 bps while Test Mode is active.

Test Mode has duration of 90 minutes. Test Mode can be activated under any conditions, including Off. Test Mode is cancelled by pressing the On/Off button, unplugging the unit, or when the 90 minutes is timed out. All settings revert to the factory default settings of Cool, 75 degrees F, Timer and Set Hour features are nonfunctional.

Test Mode overrides the three-minute lockout, all delays for compressor and fan motor start / speed change, and no delay when switching modes.

Test Mode default settings are ON, Money Saver, 60 degrees F, and High fan speed

Activating Error Code Mode: (Submode of Test Mode) Unit

has to be in Test Mode to enter Error Code Mode

1. Activate Error Code Mode by pressing the "TIMER ON/ OFF" button on XQ models. LED for the "TIMER ON/OFF" will flash 1 bps while Error Code Mode is active. Pressing the "TEMP/HR + " button will display 00. Consecutive presses will scroll through all error codes logged. Press the "TEMP/HR - " button to see the reverse order of all error codes logged. When the end of logged error codes is reached the temperature set point will appear.

Activate Error Code Mode by pressing at the same time the "A/C START" button and the "ON/OFF" button on QME models. LED for the "TIMER ON/OFF" will flash 1 bps while Error Code Mode is active. Pressing the "WARMER" button will display 00. Consecutive presses will scroll through all error codes logged. Press the "COOLER" button to see the reverse order of all error codes logged. When the end of logged error codes is reached the temperature set point will appear.

IMPORTANT

Error Codes are cleared from the log by exiting from Error Code Mode. To exit on XQ models, press Timer On/Off button. To exit QME models, press A/C Start and On/Off buttons. Or unplug unit to exit Error Code Mode. Plug unit in after 5 seconds to resume normal operation of unit.

TESTING THE ELECTRONIC CONTROL

ERROR CODE LISTINGS E1 SHORT CYCLE SITUATION: Defined as (compressor

powered on before the three minute time delay ten times in one hour. Investigate and correct short cycling problem. E2 KEYBOARD STUCK ERROR: If key button(s) are pressed continuously for twenty seconds or more. If MODE key is stuck, unit will default to cool. Exit Error Code Mode to see if error "E2" is no longer displayed and unit is functioning. Replace board if "E2" still displays after exiting Error Code Mode. E3 FROST PROBE OPEN: Normal operation is allowed. Ohm frost probe. Replace probe if ohm value not read. If ohm value present replace board. E4 FROST PROBE SHORT: Normal operation allowed. Replace probe. E5 INDOOR PROBE OPEN: Control assumes indoor ambient temperature is 90 degree F and unit will operate. Ohm indoor probe. Replace probe if ohm value not read. E6 INDOOR PROBE SHORT: Control assumes ambient temperature is 90 degree F and unit will operate. Replace probe. NOTE: All Error Code displays for Frost & Indoor Probe will allow unit to operate. Unit may or will ice up if faulty components not replaced. FROST PROBE SENSOR: disables compressor at 35 degrees F. INDOOR PROBE SENSOR: Control range is 60 degrees F to 90 degrees F +/- 2 degrees F.

Indoor temperature will be displayed by pressing: (QME Units) The Fan Speed button and the Warmer button. ( XQ Units) The Fan Speed button and the Temp Up button.

The indoor temperature will be displayed for 10 seconds. The display will change back to the Set Point temperature by pressing any key button except for the On/Off button. The indoor temperature can be viewed in all modes, including test mode. Filter Alert: The Filter Alert indicator turns on after the fan motor has been operating for 250 hours. The Filter Alert indicator is reset by pressing the Filter Alert button one time only,. Power failures will not reset the 250 hour timer. All time elapsed is stored in memory and resumes counting after power is restored. Keep Alive: The electronic control has a memory to retain all functions and status as set up by the user in the event of a power failure. Once power is restored to the unit there is a two second delay before the fan comes on and approximately three minutes delay before the compressor is activated,

Page 34

providing that the mode was set for cooling and the set point temperature has not been met in the room.

TEST:

1. Remove leads from thermostat.

THERMOSTAT ("SQ & KQ" Models) - See Figure 27.

Thermostat is used to cycle the compressor on and off at the comfort level desired. The thermostat has a range from 60° ±2°F to 90° ±4°F, with a differential of 5°F. Turning the knob clockwise lowers the indoor room temperature setting, while turning the knob counter clockwise raises the indoor temperature.

TEST:

Remove wires, turn thermostat to its coldest position. Check for continuity between the two terminals. Turn thermostat to warmest position, check continuity to see if contacts open. NOTE: Temperature must be in range listed to check thermostat.

Figure 27

2. Turn thermostat knob clockwise to its coldest position.

3. Test for continuity between the two terminals. Contacts should be closed.

4. Turn thermostat knob counterclockwise to its warmest position.

5. Test for continuity - contacts should be open. NOTE: The thermostat must be within the temperature range listed to open and close.

Figure 29

To maintain the comfort level desired, a cross ambient type thermostat is used. The thermostat has a range from 65° ±2°F to 87° ±3°F. The thermostat bulb is positioned in front of the evaporator coil to sense the return air temperature. Thermostat malfunction or erratic operation is covered in the troubleshooting section of this manual.

THERMOSTAT (SC Model Only)

THERMOSTAT ("YQ" Model Only)

See Figure 28.

This thermostat is single pole-double throw, cross ambient with a range of 60° to 92°F and a differential of ±2°F. Terminal "2" is common.

Figure 28

THERMOSTAT ("YQ" Models Only)

TEST:

1. Remove leads from thermostat.

2. Turn thermostat knob clockwise to its coldest position.

3. Test for continuity between the two terminals. Contacts should be closed.

4. Turn thermostat knob counterclockwise to its warmest position.

5. Test for continuity - contacts should be open. NOTE: The thermostat must be within the temperature range listed to open and close.

Page 35

THERMOSTAT - Models ES, YS, EM, YM, EL, YL (See Figure 29)

A cross ambient thermostat is used on all heat pump and electric heat units. In addition to cycling the unit in a heating or cooling operation, the thermostat will terminate the cooling cycle in the event ice forms on the evaporator coil, in this case the thermostat functions as a de-ice control. A resistor (anticipator) is positioned within a plastic block to supply a small amount of heat to the bulb area to prevent long "off cycles" in the "Cool-Fan Auto" (MoneySaver) position (see Figure 8.) A current feedback through the fan motor windings during "off cycle" completes the circuit to the resistor.

In the heating cycle, the heat anticipator is energized to supply a small amount of heat during the "on" cycle. This will open the contacts in the thermostat prematurely to maintain a closer differential between the "cut in" and "cut out" temperature. The heat anticipator is energized in the heating mode regardless of whether fan is placed in the automatic (MoneySaver) or constant run position.

RANGE: Cooling Model Thermostat

60°F (±2°) to 92°F (±4°),

Figure 30

Figure 31

THERMOSTAT BULB LOCATION

("SQ" Models Only)

Thermostat sensor holder 020 and anticipator (4712D-140) to be positioned between the 4th and 5th and 6th and 7th

rows of tubes from the bottom of the coil at dimension shown

THERMOSTAT BULB LOCATION

("KQ", "YQ" and "SC" Models Only)

Thermostat sensor holder 020 to be positioned between the 4th and 5th and 6th and 7th rows of tubes from the bottom of the coil at dimension shown

TEST:

Cooling/Heating Models: Remove wires from thermostat

and check continuity between terminal "2" (common) and "3" for cooling. Check between terminals "2" (common) and "1" for heating. Also check that contacts in thermostat open after placing in either position. NOTE: Temperature must be within range listed to check thermostat. Refer to the troubleshooting section in this manual for additional information on thermostat testing.

THERMOSTAT ADJUSTMENT

No attempt should be made to adjust thermostat. Due to the sensitivity of the internal mechanism and the sophisticated equipment required to check the calibration, it is suggested that the thermostat be replaced rather than calibrated. Thermostat bulb must be straight to insure proper performance.

THERMOSTAT BULB LOCATION

The position of the bulb is important in order for the thermostat to function properly. The bulb of the thermostat should be located approximately 45° to a maximum of 60° from horizontal. Also, do not allow the thermostat bulb to touch the evaporator coil. (See Figures 30 and 31.)

DEFROST THERMOSTAT

(Heat Pump Models Only)

(See Figure 32)

This thermostat is single pole - double throw with contacts between terminals "2" and "3" closing on temperature rise and contacts between terminals "2" and "1" closing on temperature fall. When the contacts between terminals "2" and "1" make, power is supplied to the heater element.

This control is dual purpose control that acts as an outdoor thermostat and defrost control.

When the sensing bulb, attached to the condenser coil, senses enough icing on the outdoor coil, it will interrupt power to the compressor and supply power to the heating element until the coil temperature reaches above 43°, then the heater will shut off and the unit will resume operating in the reverse cycle mode.

When the outdoor coil temperature drops below 20°, the unit will operate in electric heat mode continuously until the outdoor coil temperature rises above 43°.

The fan motor will not turn off when defrost occurs, and the 4way valve will not reverse.

Page 36

Figure 32

DEFROST THERMOSTAT

(Heat Pump Models)

RESISTOR (Heat Anticipator) (See Figure 34)

Failure of the resistor will cause prolonged "off" and "on" cycles of the unit. When replacing a resistor, be sure and use the exact replacement. Resistor ratings are as follows:

115 Volt - 5,000 ohms 3 watt 230 Volt - 20,000 ohms 3 watt

DEFROST BULB LOCATION (Heat Pump Models Only)

(See Figure 33)

The defrost control bulb must be mounted securely and in the correct location to operate properly.

Figure 33

DEFROST THERMOSTAT BULB

LOCATION (All Heat Pump Models)

(See Figure 32)

Figure 34

RESISTOR

CAPACITOR, RUN (See Figure 35)

A run capacitor is wired across the auxiliary and main winding of a single phase permanent split capacitor motor such as the compressor and fan motor. A single capacitor can be used for each motor or a dual rated capacitor can be used for both.

Slide the bulb end of the thermostat defrost under the retainer as shown

Retainer

The capacitor's primary function is to reduce the line current while greatly improving the torque characteristics of a motor. The capacitor also reduces the line current to the motor by improving the power factor of the load. The line side of the capacitor is marked with a red dot and is wired to the line side of the circuit.

CAPACITOR - TEST

1. Remove capacitor from unit.

2. Check for visual damage such as bulges, cracks, or leaks.

Page 37

Figure 35

CAPACITOR HOOK-UP

3. For dual rated, apply an ohmmeter lead to common (C) terminal and the other probe to the compressor (HERM) terminal. A satisfactory capacitor will cause a deflection on the pointer, then gradually move back to infinity.

4. Reverse the leads of the probe and momentarily touch the capacitor terminals. The deflection of the pointer should be two times that of the first check if the capacitor is good.

5. Repeat steps 3 and 4 to check fan motor capacitor.

DUAL RATED RUN

NOTE: The slide (check) inside the valve is made of

teflon. Should it become necessary to replace the check valve, place a wet cloth around the valve to prevent overheating during the brazing operation.

CHECK VALVE OPERATION

In the cooling mode of operation, high pressure liquid enters the check valve forcing the slide to close the opposite port (liquid line) to the indoor coil. Refer to refrigerant flow chart. This directs the refrigerant through the filter drier and cooling capillary tube to the indoor coil.

In the heating mode of operation, high pressure refrigerant enters the check valve from the opposite direction, closing the port (liquid line) to the outdoor coil. The flow path of the refrigerant is then through the filter drier and heating capillary to the outdoor coil.

Failure of the slide in the check valve to seat properly in either mode of operation will cause flooding of the cooling coil. This is due to the refrigerant bypassing the heating or cooling capillary tube and entering the liquid line.

HEAT PUMPS: REVERSING VALVE

(See Figure 37)

NOTE: A shorted capacitor will indicate a low resistance

and the pointer will move to the "0" end of the scale and remain there as long as the probes are connected.

An open capacitor will show no movement of the pointer when placed across the terminals of the capacitor.

CHECK VALVE

(See Figure 36)

A unique two-way check valve is used on the reverse cycle heat pumps. It is pressure operated and used to direct the flow of refrigerant through a single filter drier and to the proper capillary tube during either the heating or cooling cycle

Figure36

ONE-WAY CHECK VALVE

Heat Pump Models)

A reversing valve is used to change the refrigerant flow within the system to permit heating or cooling.

The reversing valve consists of a main valve body which houses the slide and piston, plus a pilot valve which is activated by a solenoid.

There are three tubes connected to one side of the main valve body and one tube on the opposite side. The single tube is connected to the compressor discharge line. The center tube on the opposite side is the common suction line to the compressor. The outside tubes are connected to the indoor and outdoor coils.

The pivot valve is responsible for directing the refrigerant flow to the indoor or outdoor coil. There are three small tubes connected to the pilot valve body. The center pilot tube is the common pilot tube and is connected to the center suction line. The outside tubes are connected to each end of the main valve body. The pilot valve consists of a needle valve and spring.

When the solenoid is de-energized, the spring tension closes one pilot port while the other remains open. When the solenoid is energized, the opposite end is closed. The piston in the main valve is pressure operated and will always travel in the direction of the open pilot tube port which provides a path to the center tube. Pressure which will increase in the opposite side of the valve will escape through a bleed port located in each piston. When de-energized, the valve will be in the cooling position.

Page 38

Figure 37

REVERSING VALVE

SOLENOID COIL (Heat Pump Models Only) (See Figure 37)

The solenoid coil is an electromagnetic type coil mounted on the reversing valve and is energized during the operation of the compressor in the heating cycle.

Should the reversing valve fail to shift during the heating cycle, test the solenoid coil.

TO TEST:

1. Disconnect power to unit.

2. Disconnect coil leads.

3. Attach probes of an ohmmeter to each coil lead and check for continuity.

TESTING REVERSING VALVE

Occasionally, the reversing valve may stick in the heating or cooling position or in the mid-position.

When stuck in the mid-position, part of the discharge gas from the compressor is directed back to the suction side, resulting in excessively high suction pressure.

Check the operation of the valve by starting the system and switching the operation from "Cooling" to "Heating" and then back to "Cooling". Do not hammer on valve.

If valve fails to change its position, test the voltage to the valve coil while the system is in the heating cycle. If voltage to coil is satisfactory, replace reversing valve. Should the valve fail to shift from cooling to heating, block the air flow through the outdoor coil and allow the discharge pressure to build in the system. Then switch the system from heating to cooling.

If the valve is stuck in the heating position, block the air flow through the indoor coil and allow discharge pressure to build in the system. Then switch the system from heating to cooling.

NOTE: Do not start unit with solenoid coil removed from valve,

or do not remove coil after unit is in operation. This will cause the coil to burn out.

VALVE, DRAIN PAN (See Figure 38)

During the cooling mode of operation, condensate which collects in the drain pan is picked up by the condenser fan blade and sprayed onto the condenser coil. This assists in cooling the refrigerant plus evaporating the water.

During the heating mode of operation, it is necessary that water be removed to prevent it from freezing during cold outside temperatures. This could cause the condenser fan blade to freeze in the accumulated water and prevent it from turning.

To provide a means of draining this water, a bellows type drain valve is installed over a drain opening in the base pan.

This valve is temperature sensitive and will open when the outside temperature reaches 40°F. The valve will close gradually as the temperature rises above 40°F to fully close at 60°F.

Should the valve fail to shift in either position after increasing the discharge pressure, replace the valve.

NOTE: When brazing a reversing valve into the system, it is of extreme importance that the temperature of the valve does not exceed 250° F at any time.

Wrap the reversing valve with a large rag saturated with water. "Re-wet" the rag and thoroughly cool the valve after each brazing operation of the four joints involved.

The wet rag around the reversing valve will eliminate conduction of heat to the valve body when brazing the line connection.

Figure 38

BELLOWS ASSEMBLY

DRAIN PAN VALVE

Page 39

HEATING ELEMENT (See Figure 39)

SEALED REFRIGERATION SYSTEM REPAIRS

All heat pumps and electric heat models are equipped with a heating element with the exception of the YS09J10. The "YS", "ES" and "EK12" models are equipped with a 3.3 KW element. The "YM", "EM" and "EK18" models are equipped with a 4.0 KW element. The "YL" and "EL" models are equipped with a

5.2 KW element.

The heating element contains a fuse link and a heater limit switch. The fuse link is in series with the power supply and will open and interrupt the power when the temperature reaches 161.6°F, or a short circuit occurs in the heating element. Once the fuse link separates, a new fuse link must be installed. NOTE: Always replace with the exact

replacement.

The heater element has a high limit control. This control is a bimetal thermostat mounted in the top of the heating element.

Figure 39

HEATING ELEMENT

IMPORTANT

ANY SEALED SYSTEM REPAIRS TO HEAT PUMP MODELS REQUIRES THE INSTALLATION OF A SUCTION LINE DRIER IN THE SUCTION LINE BETWEEN THE EVAPORATOR AND THE REVERSING VALVE.

EQUIPMENT REQUIRED

1. Voltmeter

2. Ammeter

3. Ohmmeter

4. E.P.A. Approved Refrigerant Recovery System.

5. Vacuum Pump (capable of 200 microns or less vacuum.)

6. Acetylene Welder

7. Electronic Halogen Leak Detector (G.E. Type H-6 or equivalent.)

Should the fan motor fail or filter become clogged, the high limit control will open and interrupt power to the heater before reaching an unsafe temperature condition.

The control is designed to open at 110°F ±6°F. Test continuity below 110°F and for open above 110°F.

The heating element for the "Y" model is energized by an outdoor thermostat. The outdoor thermostat is adjusted at a predetermined temperature to bring on the heating element and turn off the compressor. The room thermostat will then control the cycling of the element when the selected indoor temperature is reached.

Testing of the elements can be made with an ohmmeter across the terminals after the connecting wires have been removed. A cold resistance reading of approximately 14.5 ohms for the

3.3 KW heater, 11.9 ohms for the 4.0 KW heater and 9.15 ohms for the 5.2 KW heater should be registered.

8. Accurate refrigerant charge measuring device such as:

a. Balance Scales - 1/2 oz. accuracy

b. Charging Board - 1/2 oz. accuracy

9. High Pressure Gauge - (0 - 400 lbs.)

10. Low Pressure Gauge - (30 - 150 lbs.)

11. Vacuum Gauge - (0 - 1000 microns)

EQUIPMENT MUST BE CAPABLE OF:

1. Recovery CFC's as low as 5%.

2. Evacuation from both the high side and low side of the system simultaneously.

3. Introducing refrigerant charge into high side of the system.

4. Accurately weighing the refrigerant charge actually introduced into the system.

5. Facilities for flowing nitrogen through refrigeration tubing during all brazing processes.

Page 40

HERMETIC COMPONENT REPLACEMENT

The following procedure applies when replacing components in the sealed refrigeration circuit or repairing refrigerant leaks. (Compressor, condenser, evaporator, capillary tube, refrigerant leaks, etc.)

1. Recover the refrigerant from the system at the process tube located on the high side of the system by installing a line tap on the process tube. Apply gauge from process tube to EPA approved gauges from process tube to EPA approved recovery system. Recover CFC's in system to at least 5%.

SPECIAL PROCEDURE IN THE CASE OF COMPRESSOR MOTOR BURNOUT

1. Recover all refrigerant and oil from the system.

2. Remove compressor, capillary tube and filter drier from the system.

3. Flush evaporator condenser and all connecting tubing with dry nitrogen or equivalent, to remove all contamination from system. Inspect suction and discharge line for carbon deposits. Remove and clean if necessary.

2. Cut the process tube below pinch off on the suction side of the compressor.

3. Connect the line from the nitrogen tank to the suction process tube.

4. Drift dry nitrogen through the system and un-solder the more distant connection first. (Filter drier, high side process tube, etc.)

5. Replace inoperative component, and always install a new filter drier. Drift dry nitrogen through the system when making these connections.

6. Pressurize system to 30 PSIG with proper refrigerant and boost refrigerant pressure to 150 PSIG with dry nitrogen.

7. Leak test complete system with electric halogen leak detector, correcting any leaks found.

8. Reduce the system to zero gauge pressure.

9. Connect vacuum pump to high side and low side of system with deep vacuum hoses, or copper tubing. (Do not use regular hoses.)

10. Evacuate system to maximum absolute holding pressure of 200 microns or less. NOTE: This process can be speeded up by use of heat lamps, or by breaking the vacuum with refrigerant or dry nitrogen at 5,000 microns. Pressure system to 5 PSIG and leave in system a minimum of 10 minutes. Release refrigerant, and proceed with evacuation of a pressure of 200 microns or less.

4. Reassemble the system, including new drier strainer and capillary tube.

5. Proceed with processing as outlined under hermetic component replacement.

ROTARY COMPRESSOR SPECIAL TROUBLESHOOTING AND SERVICE

Basically, troubleshooting and servicing rotary compressors is the same as on the reciprocating compressor with only a few exceptions.

1. Because of the spinning motion of the rotary, the mounts are critical. If vibration is present, check the mounts carefully.

2. The electrical terminals on the rotary are in a different order than the reciprocating compressors. The terminal markings are on the cover gasket. Use your wiring diagram to insure correct connections.

REFRIGERANT CHARGING

NOTE: BECAUSE THE RAC SYSTEM IS A SEALED SYSTEM, SERVICE PROCESS TUBES WILL HAVE TO BE INSTALLED. FIRST INSTALL A LINE TAP AND REMOVE REFRIGERANT FROM SYSTEM. MAKE NECESSARY SEALED SYSTEM REPAIRS AND VACUUM SYSTEM. CRIMP PROCESS TUBE LINE AND SOLDER END SHUT. DO NOT LEAVE A SERVICE VALVE IN THE SEALED SYSTEM.

11. Break vacuum by charging system from the high side with the correct amount of refrigerant specified. This will prevent boiling the oil out of the crankcase.

NOTE: If the entire charge will not enter the high side,

allow the remainder to enter the low side in small increments while operating the unit.

12. Restart unit several times after allowing pressures to stabilize. Pinch off process tubes, cut and solder the ends. Remove pinch off tool, and leak check the process tube ends.

Proper refrigerant charge is essential to proper unit operation. Operating a unit with an improper refrigerant charge will result in reduced performance (capacity) and/or efficiency. Accordingly, the use of proper charging methods during servicing will insure that the unit is functioning as designed and that its compressor will not be damaged.

Too much refrigerant (overcharge) in the system is just as bad (if not worse) than not enough refrigerant (undercharge). They both can be the source of certain compressor failures if they remain uncorrected for any period of time. Quite often, other problems (such as low air

Page 41

refrigerant charge problems. The refrigerant circuit diagnosis chart will assist you in properly diagnosing these systems.

An overcharged unit will at times return liquid refrigerant (slugging) back to the suction side of the compressor eventually causing a mechanical failure within the compressor. This mechanical failure can manifest itself as valve failure, bearing failure, and/or other mechanical failure. The specific type of failure will be influenced by the amount of liquid being returned, and the length of time the slugging continues.

Not enough refrigerant (Undercharge) on the other hand, will cause the temperature of the suction gas to increase to the point where it does not provide sufficient cooling for the compressor motor. When this occurs, the motor winding temperature will increase causing the motor to overheat and possibly cycle open the compressor overload protector. Continued overheating of the motor windings and/or cycling of the overload will eventually lead to compressor motor or overload failure.

The weighed in method should always be used whenever a charge is removed from a unit such as for a leak repair, compressor replacement, or when there is no refrigerant charge left in the unit. To charge by this method, requires the following steps:

1. Install a piercing valve to remove refrigerant from the sealed system. (Piercing valve must be removed from the system before recharging.)

2. Recover Refrigerant in accordance with EPA regulations.

3. Install a process tube to sealed system.

4. Make necessary repairs to system.

5. Evacuate system to 250 - 300 microns or less.

6. Weigh in refrigerant with the property quantity of R-22 refrigerant.

METHOD OF CHARGING

The acceptable method for charging the RAC system is the Weighed in Charge Method. The weighed in charge method is applicable to all units. It is the preferred method to use, as it is the most accurate.

7. Start unit, and verify performance.

8. Crimp the process tube and solder the end shut.

NOTE: In order to access the sealed system it will be necessary to install Schrader type fittings to the process tubes on the discharge and suction of the compressor. Proper recovery refrigerant procedures need to be adhered to as outlined in EPA Regulations. THIS SHOULD ONLY BE ATTEMPTED BY QUALIFIED SERVICE PERSONNEL.

Undercharged Refrigerant SystemsUndercharged Refrigerant Systems

Undercharged Refrigerant Systems

Undercharged Refrigerant SystemsUndercharged Refrigerant Systems

An undercharged system will result in poor performance (low pressures, etc.) in both the heating and cooling cycle.

Whenever you service a unit with an undercharge of refrigerant, always suspect a leak. The leak must be repaired before charging the unit.

To check for an undercharged system, turn the unit on, allow the compressor to run long enough to establish working pressures in the system (15 to 20 minutes).

Intermittent frosting and thawing of the evaporator is another indication of a low charge, however, frosting and thawing can also be caused by insufficient air over the evaporator.

Checks for an undercharged system can be made at the compressor . If the compressor seems quieter than normal, it is an indication of a low refrigerant charge. A check of the amperage drawn by the compressor motor should show a lower reading. (Check the Unit Specification.) After the unit has run 10 to 15 minutes, check the gauge pressures.

During the cooling cycle you can listen carefully at the exit of the metering device into the evaporator; an intermittent hissing and gurgling sound indicates a low refrigerant charge.

Gauges connected to system with an undercharge will have low head pressures and substantially low suction pressures.

Page 42

NOTE: Heat pump refrigeration drawing

Overcharged Refrigerant SystemsOvercharged Refrigerant Systems

Overcharged Refrigerant Systems

Overcharged Refrigerant SystemsOvercharged Refrigerant Systems

Compressor amps will be near normal or higher. Noncondensables can also cause these symptoms. To confirm, remove some of the charge, if conditions improve, system may be overcharged. If conditions don’t improve, Noncondensables are indicated.

Whenever an overcharged system is indicated, always make sure that the problem is not caused by air flow problems. Improper air flow over the evaporator coil may indicate some of the same symptoms as an overcharged system.

An over charge can cause the compressor to fail, since it would be "slugged" with liquid refrigerant.

The charge for any system is critical. When the compressor is noisy, suspect an overcharge, when you are sure that the air quantity over the evaporator coil is correct. Icing of the evaporator will not be encountered because the refrigerant will boil later if at all. Gauges connected to system will usually have higher head pressure (depending upon amount of overcharge). Suction pressure should be slightly higher.

Page 43

Restricted Refrigerant SystemRestricted Refrigerant System

Restricted Refrigerant System

Restricted Refrigerant SystemRestricted Refrigerant System

A quick check for either condition begins at the evaporator. With a partial restriction, there may be gurgling sounds at the metering device entrance to the evaporator. The evaporator in a partial restriction could be partially frosted or have an ice ball close to the entrance of the metering device. Frost may continue on the suction line back to the compressor. Often a partial restriction of any type can be found by feel, as there is a temperature difference from one side of the restriction to the other. With a complete restriction, there will be no sound at the metering device entrance. An amperage check of the compressor with a partial restriction may show normal current when compared to the unit specification. With a complete restriction the current drawn may be considerably less than normal, as the compressor is running in a deep vacuum (no load.) Much of the area of the condenser will be relatively cool since most or all of the liquid refrigerant will be stored there. The following conditions are based primarily on a system in the cooling mode.

Troubleshooting a restricted refrigerant system can be difficult. The following procedures are the more common problems and solutions to these problems. There are two types of refrigerant restrictions: Partial restrictions and complete restrictions.

A partial restriction allows some of the refrigerant to circulate through the system.

With a complete restriction there is no circulation of refrigerant in the system.

Restricted refrigerant systems display the same symptoms as a "low-charge condition."

When the unit is shut off, the gauges may equalize very slowly.

Gauges connected to a completely restricted system will run in a deep vacuum. When the unit is shut off, the gauges will not equalize at all.

Page 44

Routine MaintenanceRoutine Maintenance

Routine Maintenance

Routine MaintenanceRoutine Maintenance

NOTE: Units are to be inspected and serviced by qualified service personnel only.

1. Clean the unit air intake filter at least every 250 to 300 fan hours of operation or when the unit's indicator light is on if so equipped. Clean the filters with a mild detergent in warm water and allow to dry thoroughly before reinstalling.

2. The indoor coil (evaporator coil), the outdoor coil (condenser coil) and base pan should be inspected periodically (yearly or bi-yearly) and cleaned of all debris (lint, dirt, leaves, paper, etc.). Clean the coils and base pan with a soft brush and compressed air or vacuum. If using a pressure washer, be careful not to bend the aluminium fin pack. Use a sweeping up and down motion in the direction of the vertical aluminum fin pack when pressure cleaning coils. Cover all electrical components to protect them from water or spray. Allow the unit to dry thoroughly before reinstalling it in the sleeve.

NOTE: Do not use a caustic coil cleaning agent on coils or base pan. Use a biodegradable cleaning agent and

degreaser.

Inspect the indoor blower housing, evaporator blade, condenser fan blade, and condenser shroud periodically (yearly or bi-yearly) and clean of all debris (lint, dirt, mold, fungus, etc.) Clean the blower housing area and blower wheel with an antibacterial / antifungal cleaner. Use a biodegradable cleaning agent and degreaser on condenser fan and condenser shroud. Use warm or cold water when rinsing these items. Allow all items to dry thoroughly before reinstalling them.

3. Periodically (at least yearly or bi-yearly): inspect all control components, both electrical and mechanical, as well as the power supply. Use proper testing instruments (voltmeter, ohmmeter, ammeter, wattmeter, etc.) to perform electrical tests. Use an air conditioning or refrigeration thermometer to check room, outdoor and coil operating temperatures. Use a sling psychrometer to measure wet bulb temperatures indoors and outdoors.

4. Inspect the surrounding area (inside and outside) to ensure that the units' clearances have not been compromised or altered.

5. Inspect the sleeve and drain system periodically (at least yearly or bi-yearly) and clean of all obstructions and debris. Clean both areas with an antibacterial and antifungal cleaner. Rinse both items thoroughly with water and ensure that the drain outlets are operating correctly. Check the sealant around the sleeve and reseal areas as needed.

6. Clean the front cover when needed. Use a mild detergent. Wash and rinse with warm water. Allow it to dry thoroughly before reinstalling it in the chassis.

Page 45

TROUBLESHOOTING TOUCH TEST CHART

TO SERVICE REVERSING VALVES

NORMAL FUNCTION OF VALVE

VALV E

OPERATING

CONDITION

SUCTION TUBE

to Compressor

Tube to INSIDE

from Compressor

DISCHARGE TUBE

COIL

Tube to OUTSIDE

COIL

LEFT Pilot

Capillary Tube

RIGHT Pilot

Capillary Tube

* TEMPERATURE OF VALVE BODY

** WARMER THAN VALVE BODY

NOTES:

1 2 3 4 5 6 POSSIBLE CAUSES CORRECTIONS

Normal Hot Cool Cool Hot *TVB TVB Cooling as (2) as (1) Normal Heating Hot Cool Hot Cool *TVB TVB

as (1) as (2)

MALFUNCTION OF VALVE

No voltage to coil. Defective coil. Low charge Pressure differential too high. Pilot valve okay. Dirt in one

Hot

bleeder hole.

Piston cup leak

Clogged pilot tubes.

Hot

Both ports of pilot open. (Back seat port did not close).

Defective Compressor

Not enough pressure differential at start of stroke or not enough flow to maintain pressure differential. Body damage Both ports of pilot open.

Body damage Valve hung up at mid-stroke. Pumping volume of compressor not sufficient to maintain reversal. Both ports of pilot open.

Piston needle on end of slide leaking.

Pilot needle and piston needle leaking

Pressure differential too high . Clogged pilot tube.

Dirt in bleeder hole.

Valve will

not shift

from cool to

heat.

Valve will

not shift

from cool to

heat.

Starts to

shift but

does not

complete

reversal.

Apparent

leap in

heating.

Hot

Wa rm

Hot

Check Electrical circuit and coil

Check refrigeration charge

Cool

Wa rm

Hot

Cool

Cool,

as (2)

Cool,

as (2)

Cool,

as (2)

Cool,

as (2)

Warm

Hot

Hot,

as (1)

Hot,

as (1)

Hot,

as (1)

Hot,

as (1)

Hot,

as (1)

Hot,

as (1)

Hot,

as (1)

Warm,

as (1)

Hot

Cool,

as (2)

Cool,

as (2)

Cool,

as (2)

Cool,

as (2)

*TVB

Hot

*TVB

Hot

*TVB

Hot

*TVB

** WVB *TVB

Hot

*TVB

Warm

*TVB

WVB *TVB

*TVB

Will not shift

from heat to

cool.

Valve operated satisfactorily PRIOR to compressor motor burnout – caused by dirt and small greasy particles inside the valve. TO CORRECT: Remove valve, thoroughly wash it out. Check on air before reinstalling, or replace valve. Add strainer and filter-drier to discharge tube between valve and compressor.

Hot

Wa rm

Cool

as (1)

Warm,

Hot,

as (1)

Cool,

as (2)

Cool,

as (2)

Cool,

as (2)

Hot

Warm

*TVB

Hot

*TVB

Piston cup leak

Defective pilot.

Defective compressor.

Repair electrical circuit. Replace coil. Repair leak, recharge system. Recheck system. Deenergize solenoid, raise head pressure, reenergize solenoid to break dirt loose. If unsuccessful, remove valve, wash out. Check on air before installing. If no movement, replace valve, add strainer to discharge tube, mount valve horizontally. Stop unit. After pressures equalize, restart with solenoid energized. If valve shifts, reattempt with compressor running. If still no shift, replace valve.

Raise head pressure, operate solenoid to free. If still no shift, replace valve. Raise head pressure, operate solenoid to free partially clogged port. If still no shift, replace valve.

Check unit for correct operating pressures and charge. Raise head pressure. If no shift, use valve with smaller port. Replace valve Raise head pressure, operate solenoid. If no shift, replace valve. Replace valve Raise head pressure, operate solenoid. If no shift, use valve with smaller ports.

Raise head pressure, operate solenoid. If no shift, replace valve. Operate valve several times, then recheck. If excessive leak, replace valve. Operate valve several times, then recheck. If excessive leak, replace valve. Stop unit. Will reverse during equalization period. Recheck system Raise head pressure, operate solenoid to free dirt. If still no shift, replace valve. Raise head pressure, operate solenoid. Remove valve and wash out. Check on air before reinstalling, if no movement, replace valve. Add strainer to discharge tube. Mount valve horizontally. Stop unit. After pressures equalize, restart with solenoid deenergized. If valve shifts, reattempt with compressor running. If it still will not reverse while running, replace the valve. Replace valve.

Page 46

TROUBLESHOOTING COOLING

Compressor does not

run.

PROBLEM

Fan motor

does not run.

POSSIBLE CAUSEPROBLEM

Low voltage.

Thermostat not set cold enough or inoperative. Compressor hums but cuts off on overload. Open or shorted compressor windings. Open overload. Open capacitor. Inoperative system switch.

Broken, loose or incorrect wiring.

POSSIBLE CAUSE

Inoperative system switch. Broken, loose or incorrect wiring. Open Capacitor. Fan speed switch open. Inoperative fan motor.

TO CORRECT

Check for voltage at compressor. 115 volt and 230 volt units will operate at 10% voltage variance Set thermostat to coldest position. Test thermostat and replace if inoperative. Hard start compressor. Direct test compressor. If compressor starts, add starting components. Check for continuity and resistance.

Test overload protector and replace if inoperative. Test capacitor and replace if inoperative. Test for continuity in all positions. Replace if inoperative. Refer to appropriate wiring diagram to check wiring.

TO CORRECT

Test switch and replace in inoperative. Refer to applicable wiring diagram. Test capacitor and replace if inoperative. Test switch and replace if inoperative. Test fan motor and replace if inoperative. (Be sure internal overload has had time to reset.)

PROBLEM

Does not cool, or cools

only slightly.

PROBLEM

Unit does not run.

POSSIBLE CAUSE

Undersized unit. Thermostat open or inoperative.

Dirty filter. Dirty or plugged condenser or evaporator coil. Poor air circulation in area being cooled. Fresh air or exhaust air door open on applicable models. Low capacity – undercharge. Compressor not pumping properly.

Fuse blown or circuit tripped.

Power cord not plugged in. System switch in "Off" position. Inoperative system switch. Loose or disconnected wiring at switch or other components.

TO CORRECT

Refer to Sizing Charts. Set to coldest position. Test thermostat and replace if necessary. Clean as recommended in Owner’s Manual. Use steam or detergents to clean.

Adjust discharge air louvers. Use high fan speed. Close doors. Instruct customer on use of this feature. Check for leak and make repair. Check amperage draw against nameplate. If not conclusive, make pressure test.

TO CORRECT

Replace fuse, reset breaker. If repeats, check fuse or breaker size. Check for shorts in unit wiring and components.

Set switch correctly. Test for continuity in each switch position. Check wiring and connections. Reconnect per wiring diagram.

Page 47

PROBLEM

Evaporator coil

freezes up.

POSSIBLE CAUSE

Dirty filter. Restricted air flow.

Inoperative thermostat. Short of refrigerant. Inoperative fan motor. Partially restricted capillary.

TO CORRECT

Clean as recommended in Owner’s Manual. Check for dirty or obstructed coil - clean as required. Test for shorted thermostat or stuck contacts. De-ice coil and check for leak. Test fan motor and replace if inoperative. De-ice coil. Check temperature differential across coil. Touch test coil return bends for same temperature. Test for low running current.

PROBLEM POSSIBLE CAUSE

Excessive heat load.

Compressor runs

continually.

Does not cycle off.

Thermostat does not

turn unit off.

PROBLEM

Compressor attempts

to start, or runs for

short periods only.

Cycles on overload.

Restriction in line.

Refrigerant leak.

Thermostat contacts stuck

Thermostat incorrectly wired.

POSSIBLE CAUSE

Thermostat contacts stuck. Thermostat set at coldest point.

Incorrect wiring. Unit undersized for area to be cooled.

POSSIBLE CAUSE TO CORRECT

Overload inoperative. Opens too soon.

Compressor attempts to start before system pressures are equalized.

Low or fluctuating voltage.

Incorrect wiring. Shorted or incorrect capacitor.

Restricted or low air flow through condenser coil. Compressor running abnormally hot.

TO CORRECT:

Unit undersized. Test cooling performance of unit. Replace with larger unit. Check for partially iced coil. Check temperature split across coil. Check for oil at silver soldered connections. Check for partially iced coil. Check split across coil. Check for low running amperage. Check operation of thermostat. Replace if contacts remain closed. Refer to appropriate wiring diagram.

TO CORRECT:PROBLEM

Replace thermostat. Turn to higher temperature setting to see if the unit cycles off. Refer to appropriate wiring diagram. Refer to Sizing Chart.

Check operation of unit. Replace overload if system operation is satisfactory. Allow a minimum of two (2) minutes for pressures to equalize before attempting to restart. Instruct customer of waiting period. Check voltage with unit operating. Check for other appliances on circuit. Air conditioner should be on separate circuit for proper voltage, and be fused separately. Refer to appropriate wiring diagram. Check by substituting a known good capacitor of correct rating. Check for proper fan speed or blocked condenser. Check for kinked discharge line or restricted condenser. Check amperage.

Thermostat does not

turn unit on.

POSSIBLE CAUSE

Loss of charge in thermostat bulb.

Loose or broken parts in thermostat. Incorrect wiring.

TO CORRECTPROBLEM

Place jumper across thermostat terminals to check if unit operates. If unit operates, replace thermostat. Check as above. Refer to appropriate wiring diagram.

Page 48

PROBLEM

Noisy operation.

POSSIBLE CAUSE

Poorly installed unit.

Fan blade striking chassis. Compressor vibrating.

Improperly mounted or loose cabinet parts.

TO CORRECT

Refer to Installation Instructions for proper installation. Reposition - adjust motor mount. Check that compressor grommets have not deteriorated. Check that compressor mounting parts are not missing. Check assembly and parts for looseness, rubbing and rattling.

PROBLEM

Water leaks into room.

PROBLEM

Thermostat short

cycles.

PROBLEM

Prolonged off-cycles. (automatic operation)

TO CORRECTPOSSIBLE CAUSE

Evaporator drain pan overflowing. Condensation forming on base pan.

Poor installation resulting in rain entering room. Condensation on discharge grilles.

Clean obstructed drain trough. Evaporator drain pan broken or cracked. Reseal or replace. Check Installation Instructions. Reseal as required. Dirty evaporator coil - clean. Very high humidity level.

POSSIBLE CAUSE TO CORRECT

Thermostat differential too narrow. Plenum gasket not sealing, allowing discharge air to short cycle thermostat. Restricted coil or dirty filter.

Tubular insulation missing from top of thermostat bulb. Thermostat bulb touching thermostat bulb support bracket.

Replace thermostat. Check gasket. Reposition or replace.

Clean and advise customer of periodic cleaning of filter. Replace tubular insulation on bulb. (Applicable models.) Adjust bulb bracket. (Applicable models.)

TO CORRECT

POSSIBLE CAUSE

Anticipator (resistor) wire disconnected at thermostat or system switch. Anticipator (resister shorted or open). (Applicable models.)

Partial loss of charge in thermostat bulb causing a wide differential.

Refer to appropriate wiring diagram.

Disconnect plug from outlet. Remove resistor from bracket. Insert plug and depress "Cool" and "Fan Auto (MoneySaver)” buttons. Place thermostat to warmest setting. Feel resistor for temperature. If no heat, replace resistor. Replace thermostat.

PROBLEM

Switches from

cooling to heating.

POSSIBLE CAUSE

Thermostat sticking. Incorrect wiring.

TO CORRECT

Change room thermostat. Refer to appropriate wiring diagram.

Page 49

PROBLEM

Outside water leaks.

Evaporator drain pan cracked or obstructed. Water in compressor area.

Obstructed condenser coil. Fan blade and slinger ring improperly positioned.

TO CORRECTPOSSIBLE CAUSE

Repair, clean or replace as required.

Detach shroud from pan and coil. Clean and remove old sealer. Reseal, reinstall and check. Steam clean. Adjust fan blade to 1/2" clearance from condenser coil.

PROBLEM

High indoor

humidity.

POSSIBLE CAUSE

Insufficient air circulation in air conditioned area. Oversized unit.

Inadequate vapor barrier in building structure, particularly floors.

TO CORRECT

Adjust louvers for best possible air circulation

Operate in "Fan-Auto (MoneySaver)" position.

Advise customer.

Page 50

Troubleshooting Heating

(Heat pumps)

PROBLEM TO CORRECTPOSSIBLE CAUSE

Thermostat setting.

No heating — fan

operates.

Insufficient heating.

PROBLEM

Fan operates in

"constant" position, but

not in "automatic"

(MoneySaver).

PROBLEM POSSIBLE CAUSE

Temperature varies from

comfortable to overly

warm.

Defective thermostat. Compressor not operating.

Defective system switch.

POSSIBLE CAUSEPROBLEM

Restricted filter. Outdoor thermostat. (Applicable models.)

Fresh air or exhaust door open.

POSSIBLE CAUSE

Inoperative system switch.

Incorrect wiring.

Defective thermostat. Heat anticipator (resistor) shorted. (Applicable models)

Set thermostat to a warmer position. Replace — do not attempt to adjust. Check compressor wiring. Check for open internal or external overload. Check wiring. Test system switch

TO CORRECT

Clean as recommended in Owner’s Manual. Check if outdoor thermostat is energizing the heating element at its predetermined temperature setting Check control setting.

TO CORRECT

Check continuity of switch.

Check applicable wiring diagram.

TO CORRECT

Incorrect differential setting. Replace thermostat. Check voltage to resistor. If voltage okay, remove resistor from thermostat bulb block. With current on, feel resistor for warmth. If no heat can be felt, replace anticipator.

PROBLEM

Room temperature

uneven.

(Heating cycle)

PROBLEM

Unit will not defrost.

POSSIBLE CAUSE

Heat anticipator (resistor) shorted. (Applicable models.)

Wide differential — partial loss of thermostat bulb charge. Incorrect wiring.

POSSIBLE CAUSE

Incorrect wiring. Defrost control timer motor not advancing. Defrost control out of calibration.

Defrost control contacts stuck.

Defrost control bulb removed from coil, or not making good coil contact.

TO CORRECT

Disconnect power to unit. Remove resistor from thermostat bulb block. Plug in unit and allow to operate. Feel resistor for heat. If no heat is felt, replace resistor. Replace thermostat and check.

Refer to appropriate wiring diagram. Resistor is energized during the "on" cycle of compressor or fan.

TO CORRECT

Refer to appropriate wiring diagram. Check for voltage at "TM" and "TM1" on timer. If voltage, replace control.

If outside coil temperature is 25° F or below, and preselected time limit has elapsed, replace the defrost control. If the contacts remain closed between terminals "2" and "3" of the defrost control after preselected time interval has passed, replace control. Reinstall and assure that good bulb to coil contact is

made.

Page 51

PROBLEM POSSIBLE CAUSE TO CORRECT

Defective thermostat - replace.

Check if operating properly. Instruct customer

Unit does not heat

adequately.

Outdoor thermostat does not cut off compressor at the preselected temperature and bring on heating element. Fresh air or exhaust door open.

on proper use of control. Dirty filter. Unit undersized.

Clean as recommended in Owner’s Manual.

Check heat rise across coil. Refer to perfor-

mance data sheet on heat rise at various

outdoor ambients. If heat rise is satisfactory,

check if insulation can be added to attic or

walls.

PROBLEM POSSIBLE CAUSE TO CORRECT

Unit cools when

heat is called for.

PROBLEM

Unit does not heat

adequately.

Incorrect wiring. Defective solenoid coil. Reversing valve fails to shift.

Inoperative system switch.

POSSIBLE CAUSE

Outdoor thermostat does not cut off compressor at the preselected temperature and bring on the heating element.

Fresh air or exhaust door open.

Dirty filter. Unit undersized.

Refer to applicable wiring diagram.

Check for continuity of coil.

Block condenser coil and switch unit to cooling.

Allow pressure to build up in system, then

switch to heating. If valve fails to shift, replace

valve.

Check for continuity of system switch.

TO CORRECT

Defective thermostat — replace.

Check if operating properly. Instruct customer on proper use of control. Clean as recommended in Owner’s Manual Check heat rise across coil. Refer to performance data sheet on heat rise at various outdoor ambients. If heat rise is satisfactory, check if insulation can be added to attic or walls.

Unit cools when

heat is called for.

Cooling adequate —

heating insufficient.

POSSIBLE CAUSEPROBLEM

Incorrect wiring. Defective solenoid coil. Reversing valve fails to shift.

Inoperative system switch.

POSSIBLE CAUSEPROBLEM

Heating capillary tube partially restricted. Check valve leaking internally.

Reversing valve failing to shift completely — bypassing hot gas.

TO CORRECT

Refer to applicable wiring diagram. Check for continuity of coil. Block condenser coil and switch unit to cooling. Allow pressure to build up in the system, then switch to heating. If valve fails to shift, replace valve. Check for continuity of system switch.

TO CORRECT

Check for partially starved outer coil. Replace heating capillary tube. Switch unit several times from heating to cooling. Check temperature rise across the coil. Refer to specification sheet for correct temperature rise. Deenergize solenoid coil, raise head pressure, energize solenoid to break loose. If valve fails to make complete shift, replace valve.

Page 52

Compressor will not turn

off and operate on heating

element only during low

outside ambients.

POSSIBLE CAUSEPROBLEM

Outdoor thermostat. (Applicable models.)

TO CORRECT

Refer to the heating data on applicable models for the preselected temperature the compressor shuts off and the electric element is energized.

Compressor shuts off on

outdoor thermostat but element does not heat.

POSSIBLE CAUSEPROBLEM

Fuse link.

Heating element shorted.

Incorrect wiring.

Heat relay or heater contactor coil open.

TO CORRECT

Check fuse link for continuity. If defective, replace. Check amperage draw of element. If no amperage, replace. Check voltage to element. If voltage is okay, check wiring. Defective coil. Test coil for continuity.

Page 53

Troubleshooting Heating

(Cooling/Electric Models)

Heater relay or contactor coil open. Heater relay or contactor stuck open,

Fan Operates –

heating element does

not come on.

pitted or burned. High limit control open. Open thermal fuse. Open or shorted element.

Loose connections.

TO CORRECTPOSSIBLE CAUSEPROBLEM

Check continuity of coil. Inspect, test continuity with ohmmeter.

Check continuity – if open, replace. Check continuity. Check reason for failure. Check voltage across heater terminals. Check amperage draw of heater. Tighten all terminals.

PROBLEM POSSIBLE CAUSE

Restricted filter. Cycling high limit control.

Heating inadequate.

Exhaust or fresh air door open.

PROBLEM

Fan operates in "Con-

stant" position, but not in

"Automatic" (Money-

Saver).

PROBLEM

Long "off" and "on"

cycles.

POSSIBLE CAUSE

Fan relay contacts open.

Inoperative system switch.

Loose connection.

POSSIBLE CAUSE

Heat anticipator (resistor) shorted.

Defective thermostat.

TO CORRECT

Clean as recommended in Owner’s Manual. Control is set to open at 155°F ± 5°F and close at 130°F ± 8°F. If cycling prematurely, replace control. Check position of fresh air door control slide. Adjust cable if door does not close properly.

TO CORRECT

Check continuity of fan relay. NOTE: Some models have the fan relay energized during the heating cycle while others do not. Check continuity between terminals "L2" and "3" of the system switch. Check connections on system switch and fan relay.

TO CORRECT

Disconnect power to unit. Remove resistor from thermostat bulb block. Plug in unit and allow to operate. Feel resistor for heat. If no heat is felt, replace resistor. Replace thermostat and check operation.

PROBLEM

Fan motor does not

operate in "Constant"

or "MoneySaver"

position.

Cooling adequate,

heating insufficient.

POSSIBLE CAUSE

Defective motor. Open or shorted capacitor. Condenser fan frozen to base pan. Loose connections.

POSSIBLE CAUSEPROBLEM

Heating capillary tube partially restricted. Check valve leaking internally.

Reversing valve failing to shift completely – bypassing hot gas.

TO CORRECT

Check and replace.

Replace capacitor and check.

Check if drain pan valve is open. If not, replace.

Check all connections. Check voltage to fan motor.

TO CORRECT

Check for partially starved outer coil. Replace heating capillary tube. Switch unit several times from heating to cooling. Check temperature rise across coil. Refer to specification sheet for correct temperature rise. Deenergize solenoid coil, raise head pressure, energize solenoid to break loose. If valve fails to make complete shift, replace valve.

Page 54

PROBLEM

Compressor will not

turn off and operate on

heating element only

during low outside

ambients.

POSSIBLE CAUSE

Outdoor thermostat. (Applicable models.)

TO CORRECT

Refer to the heating data on applicable models for

the preselected temperature the compressor shuts

off and the electric element is energized.

TO CORRECTPOSSIBLE CAUSEPROBLEM

Compressor shuts off

on outdoor thermostat

but, element does not

heat.

Fuse link.

Heating element shorted.

Incorrect wiring.

Heat relay or heater contactor coil open.

Troubleshooting Chart — CoolingTroubleshooting Chart — Cooling

Troubleshooting Chart — Cooling

Troubleshooting Chart — CoolingTroubleshooting Chart — Cooling

Check fuse link for continuity. If defective, replace.

Check amperage draw of element. If no amperage,

replace.

Check voltage to element. If voltage is okay, check

wiring.

Defective coil. Test coil for continuity.

REFRIGERANT SYSTEM

DIAGNOSIS COOLING

Low Suction Pressure High Suction Pressure Low Head Pressure High Head Pressure

Low Load Conditions High Load Conditions Low Load Conditions High Load Conditions

Low Air Flow Across High Air Flow Across Refrigerant System Low Air Flow Across

Indoor Coil Indoor Coil Restriction Outdoor Coil

Refrigerant System Reversing Valve not Reversing Valve not Overcharged

Restriction Fully Seated Fully Seated

Undercharged Overcharged Undercharged Noncondensables (air)

in System

Moisture in System Defective Compressor Defective Compressor

Page 55

Troubleshooting Chart — HeatingTroubleshooting Chart — Heating

Troubleshooting Chart — Heating

Troubleshooting Chart — HeatingTroubleshooting Chart — Heating

REFRIGERANT SYSTEM

DIAGNOSIS – HEATING

Low Suction Pressure High Suction Pressure Low Head Pressure

Low Airflow

Across Outdoor Coil

Refrigerant System

Restriction

Undercharged Overcharged

Moisture in System

Outdoor Ambient Too

for Operation in Heating

Reversing Valve not

Defective Compressor Defective Compressor

Electrical Electrical

Electrical

Electrical Electrical

High

Fully Seated

Refrigerant System

Restriction

Reversing Valve not

Fully Seated

Undercharged

Troubleshooting ChartTroubleshooting Chart

Troubleshooting Chart

Troubleshooting ChartTroubleshooting Chart

HEAHEA

HEA

HEAHEA

T PUMPT PUMP

T PUMP

T PUMPT PUMP

High Head Pressure

Outdoor Ambient Too High

For Operation In Heating

Low Airflow Across

Indoor Coil

Overcharged

Noncondensables (air) in

System

Is Line Voltage

Present at the Solenoid

YES

Is the Solenoid Coil Good?

YES

Reversing Valve Stuck

Replace the Reversing Valve

HEAT PUMP

SYSTEM COOLS WHEN

HEATING IS DESIRED.

Is the Selector Switch

Set for Heat?

Replace the Solenoid Coil

Page 56

WIRING DIAGRAM FOR MODELS RS10J101, RS10J103, RS12J101, RS12J103,

RS15J301, RM18J30, RM15J101, RM18J302, RM18J303

Page 57

Wiring Diagram for Models SQ05J10A-1, SQ06J10A-1,

SQ07J10A-1 & SQ08J10B-1

Page 58

WIRING DIAGRAM FOR MODELS KQ05J10A-1, KQ05J10A-3, KQ06J10A-1,

KQ06J10A-3, KQ08J10A-1

617-581-04

Page 59

WIRING DIAGRAM FOR MODEL YQ06J10A-1

617-581-05

Page 60

WIRING DIAGRAM FOR MODEL SC06H10D

Page 61

WIRING DIAGRAM FOR MODELS

SS08J10A-1, SS08J10R-1, SS09J10A-1, SS10J10A-1, SS10J10R-1,

SS12J10A-1, SS12J30A-1, SS12J30A-3, SS12J10R-3, SS12J10R-2, SS15J30A-

1, SM14J10B-1, SM18J30A-2, SM18J30A-3, & SM21J30A-4

Page 62

WIRING DIAGRAM FOR MODELS:

SL24J30A-1, SL24J30A-3, SL28J30A-1, & SL33J30-2

Page 63

Wiring Diagram for "KS," "KM" & "KL" Models

Page 64

WIRING DIAGRAM FOR MODELS ES12J33, ES15J33A, EM18J34A

EL24J35, EL33J35, EK12J33A, EK18J34A-2 & EK18J34A-3

Page 65

WIRING DIAGRAM FOR MODELS YS13J33, YM18J34A & YL24J35A

Page 66

WIRING DIAGRAM FOR MODEL YS09J10A

Page 67

TESTING THE ELECTRONIC CONTROL

2001 XQ BOARDS & QME BOARDS

Checking Room Temperature:

1. Check the room temperature at the electronic control pad by pressing at the same time the "FAN SPEED" button and the temperature "UP" button on XQ models.

2. Check the room temperature at the electronic control pad by pressing at the same time the "FAN SPEED" button and the "WARMER" button on QME models. The indoor temperature will display for 10 seconds. Indoor temperature can be viewed in all modes, including the TEST mode. The display can be changed back to SET temperature by pressing any key, except the ON/OFF button, or after 10 seconds has elapsed.

Activating Test Mode: Activate test mode by pressing at the same time the "MODE" button and

the temperature "DOWN" button on XQ models. LEDs for Hour, Start, and Stop will blink 1 bps while Test Mode is active. Activate test mode by pressing at the same time the "MONEY SAVER" button and the "FILTER ALERT" button on QME models. LED for the Filter Alert will blink 1 bps while Test Mode is active.

Test Mode overrides the three-minute lockout, all delays for compressor and fan motor start / speed change, and no delay when switching modes. Saver, 60 degrees F, and High fan speed

Activating Error Code Mode: (Submode of Test Mode) Unit has to be in Test Mode to enter Error

Code Mode

1. Activate Error Code Mode by pressing the "TIMER ON/OFF" button on XQ models. LED for the "TIMER ON/OFF" will flash 1 bps while Error Code Mode is active. Pressing the "TEMP/ HR + " button will display 00. Consecutive presses will scroll through all error codes logged. Press the "TEMP/HR - " button to see the reverse order of all error codes logged. When the end of logged error codes is reached the temperature set point will appear.

Activate Error Code Mode by pressing at the same time the "A/C START" button and the "ON/ OFF" button on QME models. LED for the "TIMER ON/OFF" will flash 1 bps while Error Code Mode is active. Pressing the "WARMER" button will display 00. Consecutive presses will scroll through all error codes logged. Press the "COOLER" button to see the reverse order of all error codes logged. When the end of logged error codes is reached the temperature set point will appear.

Test Mode default settings are ON, Money

IMPORTANT

Page 68

QUICK REFERENCE GUIDE

QuietMaster® Electronic Room Air Conditioner

920–044-01 (11/2000)

TO START UNIT







Touch the ON/OFF button. The unit will automatically be in regular COOLING mode

with the temperature set at 75°F (24°C) and the fan speed at F1 (SLEEP).

NOTE: Should the FILTER ALERT light flash when you first turn the unit on, touch the

FILTER ALERT button to turn off the flashing light.

TO ADJUST TEMPERA TO ADJUST TEMPERA

TO ADJUST TEMPERA

TO ADJUST TEMPERA TO ADJUST TEMPERA







COOLER – Touch

the display shows the desired room temperature.

WARMER – Touch WARMER and hold until

the display shows the desired room temperature.

FAHRENHEIT / CELSIUS – Touch ºF / ºC to show the temperature in Celsius, touch again to show Fahrenheit.

TO ADJUST THE FAN SPEED



Touch SPEED 1-4 until the display shows the desired fan speed. F1 is the lowest setting (SLEEP SETTING), F2 is LOW, F3 is MEDIUM, F4 is HIGH. Touch SMART FAN (light on) and the fan speed will adjust automatically to maintain the desired comfort level.

Touch SPEED 1-4 for manual control of fan speeds

TURETURE

TURE

TURETURE

COOLER

and hold until

TOUCH

ON / OFF

DISPLAY

Cooler Warmer

DISPLAY

SPEED

1 – 4

SMART

FA N

F / °C

TO SET THE CL TO SET THE CL

TO SET THE CL

TO SET THE CL TO SET THE CL



Smart Center

ELECTRONIC CONTROLS

TO SET THE TIMER TO SET THE TIMER

TO SET THE TIMER

TO SET THE TIMER TO SET THE TIMER







STOP TIME – Touch A/C STOP and hold until the hour you want the unit to shut off

appears in the display.

START TIME – Touch A/C START and hold until the hour you want the unit to come on

appears in the display.

Touch TIMER ON (light on) to activate the timer function. Touch TIMER OFF (light off) to cancel the timer function. Once the on and off times have been selected, they will remain in memory. However, if the power is interrupted, set the CLOCK TIME again.

F F

or complete operating instructions refer to the Operating Guide.or complete operating instructions refer to the Operating Guide.

or complete operating instructions refer to the Operating Guide.

F F

or complete operating instructions refer to the Operating Guide.or complete operating instructions refer to the Operating Guide.

Touch SET HOUR CLOCK and hold until the hour closest to the actual time appears in the display. Make sure you set A.M. and P.M. properly.

Minutes will NOT show on the display.

OCK TIMEOCK TIME

OCK TIME

OCK TIMEOCK TIME

A /C Stop

DISPLAY

Set Hour

Clock

DISPLAY

A /C

Start

Timer

On/Off

Page 69

QUICK REFERENCE GUIDE

XSTAR® Room Air Conditioner

TO START UNIT







Touch the POWER ON/OFF button. The unit will automatically be in regular COOLING

mode with the temperature set at 75°F (24°C) and the fan speed at F1 (SLEEP).

TO ADJUST TEMPERA TO ADJUST TEMPERA

TO ADJUST TEMPERA

TO ADJUST TEMPERA TO ADJUST TEMPERA







COOLER – Touch and hold until the display shows the desired room temperature. WARMER – Touch and hold until the display shows the desired room temperature.

TURETURE

TURE

TURETURE

920–117-00 (12/00)

TOUCH

POWER

On/Off

DISPLAY

TO ADJUST THE FAN SPEED



Touch FAN SPEED until the display shows the desired fan speed. F1 is the lowest setting (SLEEP SETTING / LOW), F2 is MED, F3 is HIGH, and SF is SMART FAN. With SMART FAN on, the fan speed will adjust automatically to maintain the desired comfort level.

TO SET THE CLOCK TIME



Touch SET HOUR (Clock light On), then press or until the hour closest to the actual

time appears in the display. Make sure you set A.M. and P.M. properly.

Minutes will NOT show on the display.

TO SET THE TIMER TO SET THE TIMER

TO SET THE TIMER

TO SET THE TIMER TO SET THE TIMER







START TIME – After the clock time has been set, press SET HOUR (START light on) then

press and until the hour you want the unit to come on appears in the display.

STOP TIME – After the start time has been set, press SET HOUR (STOP light on), then

press and until the hour you want the unit to shut off appears in the display.

Set

Hour

DISPLAY

FA N

SPEED

DISPLAY

Set

Hour

DISPLAY

Timer

On/Off

or complete operating instructions refer to the Operating Guide.or complete operating instructions refer to the Operating Guide.

or complete operating instructions refer to the Operating Guide.

or complete operating instructions refer to the Operating Guide.or complete operating instructions refer to the Operating Guide.

Page 70

FRIEDRICH AIR CONDITIONING COFRIEDRICH AIR CONDITIONING CO

FRIEDRICH AIR CONDITIONING CO

FRIEDRICH AIR CONDITIONING COFRIEDRICH AIR CONDITIONING CO

• Post Office Box 1540 • San Antonio, Texas 78295-1540

• 4200 N. Pan Am Expressway • San Antonio, Texas 78218-5212

• (210) 357-4400 • FAX (210) 357-4480

Visit us on the Internet at www.friedrich.com

Printed in the U.S.A.

RACServMn (01/02)

Friedrich WS09A10D, WS12A30D, WS12A10D, WS09A30D, WS13A30D Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual