Rheem RASL-JEC, ASL-JEC Series Installation Instructions Manual

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Page 1

92-101691-05-02

SUPERSEDES 92-101691-05-01

AIR-COOLED CONDENSING UNITS

(-)ASL-JEC 18 SEER EQUIPPED WITH THE COMFORT CONTROL

SYSTEM™ AND FEATURING DUAL DRIVE COMPRESSORS IN

SELECT MODELS

INSTALLATION INSTRUCTIONS

[ ] INDICATES METRIC CONVERSIONS

ISO 9001:2000

Featuring Earth-Friendly R-410A Refrigerant

Page 2

TABLE OF CONTENTS

1.0 SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2.0 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1 Checking Product Received . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

.4 Electrical and Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.5 Proper Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.0 LOCATING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1 Corrosive Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Condenser Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.3 Operational Issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.4 For Condensers With Space Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.5 Customer Satisfaction Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.6 Unit Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

.7 Factory-Preferred Tie-Down Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.0 REFRIGERANT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.1 Tools Required for Installing & Servicing R-410A Models . . . . . . . . . . . . . . 9

4.2 Specifications of R-410A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.3 Quick Reference Guide for R-410-A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5.0 REPLACEMENT UNITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6.0 INDOOR COIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6.1 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

7.0 INTERCONNECTING TUBING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

7.1 Vapor and Liquid Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

7.2 Maximum Length of Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7.3 Outdoor Unit Installed Above or Below Indoor Coil . . . . . . . . . . . . . . . . . . 12

7.4 Tubing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7.5 Tubing Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.6 Leak Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

8.0 DUAL DRIVE COMPRESSORS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8.1 Compressor Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8.2 Comfort Control

System™ Control Identification . . . . . . . . . . . . . . . . . . . 16

8.3 Comfort Control

System™ Control Operation . . . . . . . . . . . . . . . . . . . . . 17

9.0 COMPRESSOR CRANKCASE HEAT (CCH) . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

10.0 HARD START COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

11.0 HIGH AND LOW PRESSURE CONTROLS (HPC AND LPC). . . . . . . . . . . . . . . 17

11.1 Evacuation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

12.0 CONDENSING UNITS EQUIPPED WITH THE COMFORT CONTROL

SYSTEM™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

12.1 Control Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

12.2 Comfort Control

Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

12.3 Comfort Control

Diagnostic Codes in Dual Drive . . . . . . . . . . . . . . . . . . . 20

12.4 Comfort Control

ICC Control Operation . . . . . . . . . . . . . . . . . . . . . . . . . . 21

12.5 Active Compressor Protection Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

12.6 Test and Fault Recall Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

12.7 ICC Diagnostic Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

12.8 Conventional 24VAC Thermostat Control Wiring . . . . . . . . . . . . . . . . . . . 28

12.9 Typical Non-Communicating Thermostat Wiring Diagrams. . . . . . . . . . . . 29

12.10 Diagnostic Codes in Dual Drive Condensing Units With Conventional

Thermostat Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

12.11 ICC Control Operation with Conventional Thermostat Wiring . . . . . . . . . . 30

12.12 Active Compressor Protection Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

12.13 Test and Fault Recall Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

13.0 ELECTRICAL WIRING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

13.1 Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

13.2 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

13.3 Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

14.0 START-UP AND PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

15.0 CHECKING AIRFLOW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

16.0 CHECKING REFRIGERANT CHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

16.1 Charging Units With R-410A Refrigerant. . . . . . . . . . . . . . . . . . . . . . . . . . 36

16.2 Charging By Liquid Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

16.3 Charging By Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

16.4 Final Leak Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

17.0 ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

17.1 Remote Outdoor Temperature Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

18.0 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

18.1 Comfort Control

System™ System Initial Startup . . . . . . . . . . . . . . . . . . 37

18.2 Replacement of Comfort Control

System™ Control Board . . . . . . . . . . . 38

18.3 Electrical Checks Flow Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

18.4 Cooling Mechanical Checks Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . 40

18.5 General Trouble Shooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

18.6 Service Analyzer Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42-46

18.7 Subcooling Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

19.0 WIRING DIAGRAMS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48-49

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Continued on next page ➜

1.0 SAFETY INFORMATION

WARNING

THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED, LICENSED SERVICE PERSONNEL FOR PROPER INSTALLATION, ADJUSTMENT AND OPERATION OF THIS UNIT. READ THESE INSTRUCTIONS THOROUGHLY BEFORE ATTEMPTING INSTALLATION OR OPERATION. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN IMPROPER INSTALLATION, ADJUSTMENT, SERVICE OR MAINTENANCE POSSIBLY RESULTING IN FIRE, ELECTRICAL SHOCK, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

WARNING

THE MANUFACTURER’S WARRANTY DOES NOT COVER ANY DAMAGE OR DEFECT TO THE AIR CONDITIONER CAUSED BY THE ATTACHMENT OR USE OF ANY COMPONENTS, ACCESSORIES OR DEVICES (OTHER THAN THOSE AUTHORIZED BY THE MANUFACTURER) INTO, ONTO OR IN CONJUNCTION WITH THE AIR CONDITIONER. YOU SHOULD BE AWARE THAT THE USE OF UNAUT HOR IZ ED CO MPO NENTS , A CC ESS ORIES OR DEV ICE S MAY ADVERSELY AFFECT THE OPERATION OF THE AIR CONDITIONER AND MAY ALSO ENDANGER LIFE AND PROPERTY. THE MANUFACTURER DISCLAIMS ANY RESPONSIBILITY FOR SUCH LOSS OR INJURY RESULTING FROM THE USE OF SUCH UNAUTHORIZED COMPONENTS, ACCESSORIES OR DEVICES.

WARNING

DISCONNECT ALL POWER TO UNIT BEFORE STARTING MAINTENANCE. FAILURE TO DO SO CAN CA USE ELEC TRICAL SHO CK RESULTI NG IN SEVERE PERSONAL INJURY OR DEATH.

WARNING

DO NOT USE OXYGEN TO PURGE LINES OR PRESSURIZE SYSTEM FOR LEAK TE ST. OXYGEN REACTS VIOLEN TLY WITH OIL, WHICH CAN CAUSE AN EXPLOSION RESULTING IN SEVERE PERSONAL INJURY OR DEATH.

WARNING

THE UNIT MUST BE PERMANENTLY GROUNDED. FAILURE TO DO SO CAN CAUSE ELECTRICAL SHOCK RESULTING IN SEVERE PERSONAL INJURY OR DEATH.

WARNING

TURN OFF ELECTRIC POWER AT THE FUSE BOX OR SERVICE PANEL BEFORE MAKING ANY ELECTRICAL CONNECTIONS.

ALSO, THE GROUND CONNECTION MUST BE COMPLETED BEFORE MAKING LINE VOLTAGE CONNEC TIONS. FAILURE TO DO SO CAN RESULT IN EL ECTRICAL SHOCK, SEVERE PERSONAL INJUR Y OR DEATH.

Page 4

CAUTION

UNIT MAY START SUDDENLY AND WITHOUT WARNING Solid red light indicates a thermostat call for unit operation is present at the ICC control. ICC control will attempt to start unit after short cycle timer expires or when in Active Protection mode will attempt to restart unit prior to Lockout mode.

CAUTION

UNIT MAY START SUDDENLY AND WITHOUT WARNING Solid red light indicates a thermostat call for unit operation is present at the ICC. ICC will attempt to start unit after short cycle timer expires or when in Active Protection mode will attempt to restart unit prior to Lockout mode.

CAUTION

THE TOP OF THE SCROLL COMPRESSOR SHELL IS HOT. TOUCHING THE COMPRESSOR TOP MAY RESULT IN SERIOUS PERSONAL INJURY.

CAUTION

R-410A PRESSURES ARE APPROXIMATELY 60% HIGHER THAN R-22 PRESSURES. USE APPROPRIATE CARE WHEN USING THIS REFRIGERANT. FAILURE TO EXERCISE CARE MAY RESULT IN EQUIPMENT DAMAGE, OR PERSONAL INJURY.

CAUTION

THE COMPRESSOR HAS AN INTERNAL OVERLOAD PROTECTOR. UNDER SOME CONDITIONS, IT CAN TAKE UP TO 2 HOURS FOR THIS OVERLOAD TO RESET. MAKE SURE OVERLOAD HAS HAD TIME TO RESET BEFORE CONDEMNING THE COMPRESSOR.

CAUTION

Only use evaporators approved for use on R-410A systems. Use of existing R-22 evaporators can introduce mineral oil to the R-410A refrigerant forming two different liquids and decreasing oil return to the compressor. This c

an result in compressor failure.

CAUTION

When coil is installed over a finished ceiling and/or living area, it is rec ommen ded t hat a se con dar y she et me tal c ond ens ate p an be constructed and installed under entire unit. Failure to do so can result in property damage.

CAUTION

R-410A systems operate at higher pressures than R-22 systems. Do not use R-22 service equipment or components on R-410A equipment.

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2.0 GENERAL INFORMATION

The (-)ASL-series of condensing units are designed to operate using the Comfort Control

System™ or traditional 24VAC controls. These units are equipped with the

Comfort Control

. Your installation must have these components to use Comfort

Control

System™ :

• (-)ASL condensing unit equipped with the Comfort Control

System™

•

An air handler or furnace equipped with the Comfort Control

ystem™

• A Comfort Control

thermostat

If your installation does not meet the above requirements, you must use traditional 24VAC controls.

This installation instruction manual contains complete instructions for installation and setup using Comfort Control

or conventional 24VAC controls. Please refer to the Engineering Specification Sheets for complete performance data, thermostat, and accessory listings.

The information contained in this manual has been prepared to assist in the proper installation, operation and maintenance of the air conditioning system. Improper installation, or installation not made in accordance with these instructions, can result in unsatisfactory operation and/or dangerous conditions (noise and component failure), and can cause the related warranty not to apply.

Read this manual and any instructions packaged with separate equipment required to make up the system prior to installation. Retain this manual for future reference.

To achieve optimum efficiency and capacity, the indoor cooling coils listed in the condensing unit specification sheet should be used.

2.1 CHECKING PRODUCT RECEIVED

Upon receiving unit, inspect it for any shipping damage. Claims for damage, either apparent or concealed, should be filed immediately with the shipping company. Check condensing unit model number, electrical characteristics and accessories to determine if they are correct. Check system components (evaporator coil, condensing unit, evaporator blower, etc.) to make sure they are properly matched.

2.2 APPLICATION

Before specifying any air conditioning equipment, a survey of the structure and a heat gain calculation must be made. A heat gain calculation begins by measuring all external surfaces and openings that gain heat from the surrounding air and quantifying that heat gain. A heat gain calculation also calculates the extra heat load caused by sunlight and by humidity removal.

Air conditioning systems are sized on the cooling load calculation. There are two capacities that enable the equipment to provide comfort. The first is sensible capacity.

Sensible heat is the heat energy measured on the dry bulb thermometer as it is added or removed.

The second form of heat is called latent or hidden heat. This is heat held in the humidity in the air.

A properly-sized unit removes both forms of heat, producing a comfortable living space. An oversized system cycles on and off too quickly and does not properly remove humidity, producing an uncomfortable living space. Select the indoor and outdoor equipment combination based on the manufacturer’s engineering data.

After the equipment combination has been selected, satisfying both sensible and latent conditioning requirements, the system must be properly installed. Only then can the unit provide the comfort the manufacturer intends.

There are several factors that the installers must consider:

• Outdoor unit location • Proper equipment evacuation

• System refrigerant charge • Indoor unit airflow

• Indoor unit blower speed • Supply and return air duct design and sizing

• System air balancing • Diffuser and return air grille location and sizing

WARNING

TH E MANUFACTU RE R’ S W AR RANTY DOES NOT COVER ANY DA MAGE OR D EFECT TO THE AIR CONDITIONER CAUSED BY THE ATTACHMENT OR USE OF ANY CO MPO NEN TS. ACC ESS

ORIES OR DEVICE S (OTHER THAN THOSE AUTHORIZED BY THE MANUF ACTUR ER ) IN TO, ONT O OR I N CON JUNCT ION WI TH THE AIR COND IT IONER. YOU SHOULD BE AWARE THAT THE USE OF UN AUTHO RIZ ED COMPONENTS, ACCESSORIES OR DEVICES MAY ADVERSELY AFF ECT TH E OP ERA TIO N OF THE AIR CONDITIONER AND MAY AL SO E NDA NGER L IFE AND PROPERTY. THE MANUFACTUR ER DIS CLAIM S ANY RES PONSI BIL ITY FOR SUC H LO SS OR I NJ UR Y RESULTING FRO M THE USE OF SU CH UNAUTHORIZED COMPONENTS, ACCESSORIES OR DEVICES.

MATCH ALL COMPONENTS:

• OUTDOOR UNIT

• INDOOR COIL/METERING DEVICE

• INDOOR AIR HANDLER/FURNACE

• REFRIGERANT LINES

Page 6

FIGURE 1

DIMENSIONS AND INSTALLATION CLEARANCES

UNIT MODEL NUMBER EXPLANATION

(-)ASL – 036 JEC

C = EQUIPPED WITH THE

COMFORT CONTROL

SYSTEM™

- 208/230-1-60

(

NOMINAL CAPACITY) 024 = 24000 BTU/HR 036 = 36000 BTU/HR 039 = 39000 BTU/HR 048 = 48000 BTU/HR 060 = 60000 BTU/HR

L = DESIGN SERIES (R-410A)

S = 18 SEER

A = REMOTE CONDENSING UNIT

TRADE NAME

IR INLETS

(

LOUVERS)

LLOW 120 [305 mm] MIN. CLEARANCE 3 SIDES

AIR DISCHARGE

ALLOW 600 [1524 mm] CLEARANCE

ALLOW 240 [610 mm] ACCESS CLEARANCE

ACCESS PANEL

ALTERNATE HIGH VOLTAGE CONNECTION (KNOCKOUT) 1

/320[34 mm]

SERVICE FITTINGS

LOW VOLTAGE CONNECTION

/8"

[22 mm]

HIGH VOLTAGE CONNECTION 1

/32" [34 mm]

LIQUID LINE CONNECTION

SERVICE ACCESS TO ELECTRICAL & VALVES ALLOW 24" [610 mm] CLEARANCE ONE SIDE

/8" [73 mm] DIA. ACCESSORY KNOCKOUTS

VAPOR LINE CONNECTION

A-00002

BASE PAN

ALLOW 24" [610 mm] ACCESS CLEARANCE

ALTERNATE LINE VOLTAGE

ENTRY (KNOCKOUT)

⁄32" [34 MM]

CONNECT THE LINE

VOLTAGE CONDUIT TO

THE BOTTOM OF THE

CONTROL BOX

AIR INLETS (LOUVERS) ALLOW 6” [152 mm] MIN. CLEARANCE 3

SIDES

ACCESS PANEL

AIR DISCHARGE

ALLOW 60" [1524 mm] CLEARANCE

TABLE 1

(-)ASL-JEC ELECTRICAL DATA

Model

Number

(-)ASL

Phase

Frequency

(Hz) Voltage (Volts)

Compressor

Fan

Motor

Full

Load

Amperes

(FLA)

Minimum

Circuit Ampacity Amperes

Fuse or HACR

Circuit Breaker

Outdoor Coil Weight

Minimum

Amperes

Maximum

Amperes

Face Area

Sq. Ft. [m

]

No.

Rows

Fins

Per

Inch

CFM [L/s}

R-410a

Oz. [g]

Net Lbs.

[kg]

Shipping Lbs. [kg]

Height

“H”

(Inches)

Length

“L”

(Inches)

Width

“W”

(Inches)

ELECTRICAL PHYSICAL DIMENSIONAL DATA

Voltage

Operating

Range

(Volts)

No.

Compressors

Rated

Load

Amperes

(RLA)

Locked

Rotor

Amperes

(LRA)

024JEC 1-60-208/230 197-253 1 10.3/10.3 52 0.5 14/14 20/20 20/20 15.8 [1.47] 1 20 HS* 3400 [1605] 144 [4082] 236 [107] 256 [116.2] 33 44 3/8 31 1/2

LS* 2800 [1322]

036JEC 1-60-208/230 197-253 1 16.7/16.7 82 2.8 24/24 30/30 40/40 23.0 [2.14] 1 22 HS* 3400 [1605] 155 [4394] 251 [113.9] 261 [118.4] 33 44 3/8 31 1/2

LS* 2800 [1322]

039JEC 1-60-208/230 188-253 2 17.9/17.9 96 2.8 26/26 30/30 40/40 23.0 [2.14] 2 20 HS* 3500 [1651] 268 [7598] 326 [147.9] 336 [152.4] 33 44 3/8 31 1/2

LS* 2800 [1322]

048JEC 1-60-208/230 188-253 2 26.9/26.9 117 2.8 37/37 45/45 60/60 23.0 [2.14] 2 20 HS* 3500 [1651] 253 [7172] 326 [147.9] 336 [152.4] 33 44 3/8 31 1/2

LS* 2800 [1322]

060JEC 1-60-208/230 188-253 2 28.2/28.2 146 2.8 39/39 50/50 60/60 23.0 [2.14] 2 20 HS* 3500 [1651] 241 [6832] 328 [148.8] 338 [153.3] 33 44 3/8 31 1/2

LS* 2800 [1322]

*HS = high speed

*LS = low speed

BOTTOM VIEW SHOWING DRAIN OPENINGS (\\\\\ SHADED AREAS).

LINE VOLTAGE ENTRY

⁄32" [34 MM]

CONNECT THE LINE

VOLTAGE CONDUIT TO

THE BOTTOM OF THE

CONTROL BOX

2.3 DIMENSIONS

2.4 ELECTRICAL & PHYSICAL DATA

LINE VOLTAGE

ENTRY

⁄8" [22 MM]

SERVICE ACCESS FOR 024 & 036 MODELS

SERVICE ACCESS FOR 039, 048 & 060 MODELS

LOW LINE VOLTAGE7⁄8"

LOW LINE VOLTAGE

⁄8"

VAPOR LINE CONNECTION

LIQUID LINE CONNECTION

SERVICE FITTING

HIGH LINE VOLTAGE 1

⁄4"

Page 7

2.5 PROPER INSTALLATION

Proper sizing and installation of this equipment is critical to achieve optimal performance. Use the information in this Installation Instruction Manual and reference the applicable Engineering Specification Sheet when installing this product.

IMPORTANT: This product has been designed and manufactured to meet ENERG

Y STAR

riteria for energy efficiency when matched with appropriate coil components. However, proper refrigerant charge and proper airflow are critical to achieve rated capacity and efficiency. Installation of this product should follow the manufacturer’s refrigerant charging and airflow instructions. Failure to confirm proper

charge and airflow may reduce energy efficiency and shorten equipment life.

3.0 LOCATING UNIT

3.1 Corrosive Environment

The metal parts of this unit may be subject to rust or deterioration if exposed to a corrosive environment. This oxidation could shorten the equipment’s useful life. Corrosive elements include, but are not limited to, salt spray, fog or mist in seacoast areas, sulphur or chlorine from lawn watering systems, and various chemical contaminants from industries such as paper mills and petroleum refineries.

If the unit is to be installed in an area where contaminants are likely to be a problem, special attention should be given to the equipment location and exposure.

• Avoid having lawn sprinkler heads spray directly on the unit cabinet.

• In coastal areas, locate the unit on the side of the building away from the water-

front.

• Shielding provided by a fence or shrubs may give some protection, but cannot

violate minimum airflow and service access clearances.

• Elevating the unit off its slab or base enough to allow air circulation will help

avoid holding water against the basepan.

Regular maintenance will reduce the build-up of contaminants and help to protect the unit’s finish.

• Frequent washing of the cabinet, fan blade and coil with fresh water will remove

most of the salt or other contaminants that build up on the unit.

• Regular cleaning and waxing of the cabinet with a good automobile polish will

provide some protection.

• A good liquid cleaner may be used several times a year to remove matter that

will not wash off with water.

Several different types of protective coatings are offered in some areas. These coatings may provide some benefit, but the effectiveness of such coating materials cannot be verified by the equipment manufacturer.

3.2 CONDENSER LOCATION

Consult local and national building codes and ordinances for special installation requirements. Following location information will provide longer life and simplified servicing of the outdoor condenser.

NOTE: These units must be installed outdoors. No ductwork can be attached, or other modifications made, to the discharge grille. Modifications will affect performance or operation.

WARNING

DIS CONNE CT A LL P OWE R TO U NIT B EFO RE STA RTI NG MAINTENANCE. FAILURE TO DO SO CAN CAUSE ELECTRICAL SHOCK RESULTING IN SEVERE PERSONAL INJURY OR DEATH.

Page 8

3.3 Operational Issues

• IMPORTANT: Locate the unit in a manner that will not prevent, impair or compromise the performance of other equipment horizontally installed in proximity to the unit. Maintain all required minimum distances to gas and electric meters, d

ryer vents, exhaust and inlet openings. In the absence of National Codes, or manufacturers’ recommendations, local code recommendations and requirements will take precedence.

• Refrigerant piping and wiring should be properly sized and kept as short as possible to avoid capacity losses and increased operating costs.

• Locate the unit where water run off will not create a problem with the equipment. Position the unit away from the drip edge of the roof whenever possible. Units are weatherized, but can be affected by the following:

o Water pouring into the unit from the junction of rooflines, without protective

guttering. Large volumes of water entering the heat pump while in operation can impact fan blade or motor life, and coil damage may occur to a heat pump if moisture cannot drain from the unit under freezing conditions.

o Freezing moisture, or sleeting conditions, can cause the cabinet to ice-over

prematurely and prevent heat pump operation, requiring backup heat, which generally results in less economical operation.

• Closely follow clearance recommendations on Page 6. o 24” to the service panel access o 60” above heat pump fan discharge (unit top) to prevent recirculation o 6” to heat pump coil grille air inlets

3.4 For Units With Space Limitations

FOR CONDENSERS WITH SPACE LIMITATIONS

In the event that a space limitation exists, we will permit the following clearances:

Single Unit Applications: Clearances below 6 inches will reduce unit capacity and efficiency. Do not reduce the 60-inch discharge, or the 24-inch service clearances.

Multiple Unit Applications: When multiple condenser grille sides are aligned, a 6inch per unit clearance is recommended, for a total of 12” between two units. Two combined clearances below 12 inches will reduce capacity and efficiency. Do not reduce the 60-inch discharge, or 24-inch service, clearances.

3.5 Customer Satisfaction Issues

• The condensing unit should be located away from the living, sleeping and recreational spaces of the owner and those spaces on adjoining property.

• To prevent noise transmission, the mounting pad for the outdoor unit should not be connected to the structure, and should be located sufficient distance above grade to prevent ground water from entering the unit.

3.6 Unit Mounting

If elevating the condensing unit, either on a flat roof or on a slab, observe the following guidelines.

• The base pan provided elevates the heat pump 3/4” above the base pad.

• If elevating a unit on a flat roof, use 4” x 4” (or equivalent) stringers positioned to distribute unit weight evenly and prevent noise and vibration (see Figure 2).

NOTE: Do not block drain openings shown in Figure 1.

3.7 Factory-Preferred Tie-Down Method

INSTRUCTIONS

IMPORTANT: These instructions are intended as a guide to securing equipment for wind-load ratings of “120 MPH sustained wind load” and “3-second, 150 MPH gust.” While this procedure is not mandatory, the Manufacturer does recommend that equipment be properly secured in areas where high wind damage may occur.

STEP 1: Before installing, clear pad of any dirt or debris.

IMPORTANT: The pad must be constructed of industry-approved materials, and must be thick enough to accommodate the concrete fastener.

STEP 2: Center base pan on pad, ensuring it is level.

Page 9

STEP 3: Using basepad as a guide, mark spots on concrete where 4 holes will be

drilled (see Figure 3).

STEP 4: Drill four pilot holes in pad, ensuring that the hole is at least 1/4” deeper

than the concrete screw being used. STEP 5: Center basepan over pre-drilled holes and insert concrete screws. STEP 6: Tighten concrete screws.

NOTE: Do not over-tighten the concrete screws. Doing so can weaken the

integrity of the concrete screw and cause it to break. STEP 7: Finish unit assembly per unit’s installation instructions.

4.0 REFRIGERANT CONNECTIONS

All units are factory charged with Refrigerant 410A. All models are supplied with service valves. Keep tube ends sealed until connection is to be made to prevent system contamination.

4.1 Tools Required For Installing & Servicing R-410A Models

Manifold Sets:

-Up to 800 PSIG High side

-Up to 250 PSIG Low Side

-550 PSIG Low Side Retard

Manifold Hoses:

-Service Pressure Rating of 800 PSIG

Recovery Cylinders:

-400 PSIG Pressure Rating

-Dept. of Transportation 4BA400 or BW400

CAUTION

R-410A systems operate at higher pressures than R-22 systems. Do not use R-22 service equipment or components on R-410A equipment.

FIGURE 2

ECOMMENDED ELEVATED INSTALLATION

Page 10

4.2 Specifications of R-410A:

Application: R-410A is not a drop-in replacement for R-22; equipment designs must accommodate its higher pressures. It cannot be retrofitted into R-22 heat pumps.

Physical Properties: R-410A has an atmospheric boiling point of -62.9°F and its saturation pressure at 77°F is 224.5 psig.

Composition: R-410A is an azeotropic mixture of 50% by weight difluoromethane (HFC-32) and 50% by weight pentafluoroethane (HFC-125).

Pressure: The pressure of R-410A is approximately 60% (1.6 times) greater than R-22. Recovery and recycle equipment, pumps, hoses and the like need to

have design pressure ratings appropriate for R-410A. Manifold sets need to range up to 800 psig high-side and 250 psig low-side with a 550 psig low-side retard. Hoses need to have a service pressure rating of 800 psig. Recovery cylinders need to have a 400 psig service pressure rating. DOT 4BA400 or DOT BW400.

Combustibility: At pressures above 1 atmosphere, mixture of R-410A and air can become combustible. R-410A and air should never be mixed in tanks or supply

lines, or be allowed to accumulate in storage tanks. Leak checking should never be done with a mixture of R-410A and air. Leak checking can be per-

formed safely with nitrogen or a mixture of R-410A and nitrogen.

4.3 Quick Reference Guide For R-410A

• R-410A refrigerant operates at approximately 60% higher pressure (1.6 times) than R-22. Ensure that servicing equipment is designed to operate with R-410A.

• R-410A refrigerant cylinders are pink in color.

• R-410A, as with other HFC’s is only compatible with POE oils.

FIGURE 3

CREW LOCATIONS

TABLE 2

DIMENSIONS

MODEL NUMBER LWABCD

(-)ASL-024/036/039/048/060 41.5 29.813 15 38 3.5 26.5

Page 11

• Vacuum pumps will not remove moisture from oil.

• R-410A systems are to be charged with liquid refrigerants. Prior to March 1999, R-410A refrigerant cylinders had a dip tube. These cylinders should be kept upright for equipment charging. Post March 1999 cylinders do not have a dip tube and should be inverted to ensure liquid charging of the equipment.

• Do not install a suction line filter drier in the liquid line.

• A liquid line filter drier is standard on every unit. Only manufacturer approved liquid line filter driers can be used. These are Sporlan (CW083S) and Alco (80K083S) driers. These filter driers are rated for minimum working pressure of 600 psig.

• Desiccant (drying agent) must be compatible for POE oils and R-410A.

5.0 REPLACEMENT UNITS

To prevent failure of a new condensing unit, the existing evaporator tubing system must be correctly sized and cleaned or replaced. Care must be exercised that the expansion device is not plugged. For new and replacement units, a liquid line filter drier should be installed and refrigerant tubing should be properly sized. Test the oil for acid. If positive, a suction line filter drier is mandatory.

IMPORTANT: WHEN REPLACING AN R-22 UNIT WITH AN R-410A UNIT, EITHER REPLACE THE LINE SET OR ENSURE THAT THE EXISTING LINE SET IS THOROUGHLY CLEANED OF ANY OLD OIL OR DEBRIS.

6.0 INDOOR COIL

REFER TO INDOOR COIL MANUFACTURER’S INSTALLATION INSTRUCTIONS.

IMPORTANT: The manufacturer is not responsible for the performance and opera-

tion of a mismatched system, or for a match listed with another manufacturer’s coil.

NOTE: All (-)ASL units must be installed with a TXV Evaporator.

The thermostatic expansion valve is specifically designed to operate with R-410A.

DO NOT use an R-22 TXV or evaporator. The existing evaporator must be replaced with the factory specified TXV evaporator specifically designed for R-410A.

6.1 Location

Do not install the indoor coil in the return duct system of a gas or oil furnace. Provide a service inlet to the coil for inspection and cleaning. Keep the coil pitched toward the drain connection.

7.0 INTERCONNECTING TUBING

7.1 Vapor and Liquid Lines

Keep all lines sealed until connection is made.

Make connections at the indoor coil first.

CAUTION

When coil i s in stall ed o ver a finis hed cei ling and/ or l ivi ng a rea, it is rec ommen ded t hat a s eco ndary s hee t met al co ndensate p an be construct ed an d i nstalled under enti re un it. Failure to do so can result in property damage.

Page 12

Refer to Line Size Information in Tables 3, 4, 5 and 6 for correct size and multipliers to be used to determine capacity for various vapor line diameters and lengths of run. The losses due to the lines being exposed to outdoor conditions are not included.

The factory refrigeration charge in the outdoor unit is sufficient for 15 feet of interconnecting lines. The factory refrigeration charge in the outdoor unit is sufficient for the unit and 15 feet of standard size interconnecting liquid and vapor lines. For different lengths, adjust the charge as indicated below.

1/4” ± .3 oz. per foot 5/16” ± .4 oz. per foot 3/8” ± .6 oz. per foot 1/2” ± 1.2 oz. per foot

7.2 Maximum Length of Lines

The maximum length of interconnecting line is 150 feet. Always use the shortest length possible with a minimum number of bends. Additional compressor oil is not required for any length up to 150 feet.

NOTE: Excessively long refrigerant lines cause loss of equipment capacity.

7.3 Outdoor Unit Installed Above or Below Indoor Coil

Use the following guidelines when installing the unit:

1. Expansion Valve Coil: a. The vertical separation cannot exceed the value in Tables 4, 5, and 6. b. No changes are required for expansion valve coils.

2. It is recommended to use the smallest liquid line size permitted to minimize the system charge.

3. Tables 4, 5, and 6 may be used for sizing horizontal runs.

7.4 Tubing Installation

Observe the following when installing correctly sized type “L” refrigerant tubing between the condensing unit and evaporator coil:

• If a portion of the liquid line passes through a hot area where liquid refrigerant can be heated to form vapor, insulating the liquid line is required.

• Use clean, dehydrated, sealed refrigeration grade tubing.

• Always keep tubing sealed until tubing is in place and connections are to be made.

TABLE 3

VAPOR LINE CAPACITY MULTIPLIER

024

(-)ASL

Unit Vapor Line

Connection Size

(inches I.D.) [mm]

Vapor Line Run

Feet [m]

3/4” [19.05] I.D.

Sweat

7/8” [22.23] I.D.

Sweat

7/8” [22.23] I.D.

Sweat

7/8” [22.23] I.D.

Sweat

7/8” [22.23] I.D.

Sweat

5/8” [15.88]

Optional

5/8” [15.88]

Optional

5/8” [15.88]

Optional

5/8” [15.88]

Optional

3/4” [19.05]

Optional

25‘ [7.62]

50’ [15.24]

75’ [22.86]

100’ [30.48]

125’ [38.10]

150’ [45.72]

Opt.

Std.

Opt.

Std.

Opt.

Std.

Opt.

Std.

Opt.

Std.

Opt.

Std.

3/4” [19.05]

Standard

3/4” [19.05]

Standard

3/4” [19.05]

Standard

3/4” [19.05]

Standard

7/8” [22.23]

Standard

1.00 0.99 0.99 0.98 0.99

1.00 1.00 1.00 1.00 1.00

0.98 0.98 0.97 0.96 0.98

1.00 1.00 0.99 0.99 0.99

0.98 0.96 0.96 0.94 0.96

1.00 0.99 0.99 0.98 0.99

0.98 0.95 0.95 0.92 0.95 N/A N/A N/A N/A N/A

0.96 0.94 0.93 0.90 0.94 N/A N/A N/A N/A N/A

0.96 0.92 0.91 0.88 0.93 N/A N/A N/A N/A N/A

036 039 048 060

Vapor Line Diameter (inches O.D.) [mm]

NOTES:

1. Do NOT exceed the limits in the liquid and suction line sizing charts.

2. Do NOT use 7/8 OD suction lines in 2 or 4-ton applications.

3. Do NOT use 1-1/8 OD suction line in ANY application.

4. Line sets over 75 feet MUST use the optional suction line.

Page 13

• Blow out the liquid and vapor lines with dry nitrogen before connecting to the outdoor unit and indoor coil. Any debris in the line set will end up plugging the expansion device.

• As an added precaution, a high quality filter drier is standard on R-410A units.

• Do not allow the vapor line and liquid line to be in contact with each other. This causes an undesirable heat transfer resulting in capacity loss and increased power consumption. The vapor line must be insulated.

• If tubing has been cut, make sure ends are deburred while holding in a position to prevent chips from falling into tubing. Burrs such as those caused by tubing cutters can affect performance dramatically, particularly on small liquid line sizes.

IQUID LINE SIZE - OUTDOOR UNIT ABOVE INDOOR COIL

R-410A System

Capacity

Model

Line Size

Connection

Size (Inch I.D.) [mm]

Line Size

(Inch O.D.)

[mm]

Minimum Vertical Separation - Feet [m]

1/4” [6.35]* 0010 [3.05] 34 [10.36] 58 [17.68] 82 [24.99]

-024 3/8” [9.53] 5/16” [7.93] 000000

3/8” [9.52] 000000

5/16” [7.93] 006 [1.83] 14 [4.27] 21 [6.40] 28 [8.53]

-036 3/8” [9.53] 3/8” [9.52]* 00 0000

1/2” [12.70] 00 0000

5/16” [7.93]* 000010 [3.05] 24 [7.32]

-039 3/8” [9.53] 3/8” [9.52] 00 0000

1/2” [12.70] 00 0000

5/16” [7.93]* 00018 [5.49] 40 [12.19] 62 [18.90]

-048 3/8” [9.53] 3/8” [9.52] 000000

1/2” [12.70] 00 0000

-060 3/8” [9.53]

3/8” [9.52]* 000000

1/2” [12.70] 00 0000

25 [7.62] 50 [15.24] 75 [22.86] 100 [30.48] 125 [38.1] 150 [45.72]

Liquid Line Size

Outdoor Unit Above Indoor Coil (Cooling Only - Does not apply to Heat Pumps)

Total Equivalent Length - Feet [m]

IQUID LINE SIZE - OUTDOOR UNIT BELOW INDOOR COIL

R-410A System

Capacity

Model

Line Size

Connection

Size (Inch I.D.) [mm]

Line Size

(Inch O.D.)

[mm]

Maximum Vertical Separation - Feet [m]

1/4” [6.35]* 25 [11.28] 13 [3.96] N/A N/A N/A N/A

-024 3/8” [9.53] 5/16” [7.93] 25 [14.33] 44 [13.41] 40 [12.19] 36 [10.97] 30 [9.14] 24 [7.32]

3/8” [9.52] 25 [15.24] 48 [14.63] 47 [14.33] 46 [14.02] 45 [13.72] 43 [13.11]

5/16” [7.93] N/A N/A N/A N/A N/A N/A

-036 3/8” [9.53] 3/8” [9.52]* 12 [3.66] 9 [2.74] N/A N/A N/A N/A

1/2” [12.70] 14 [4.27] 13 [3.96] 13 [3.96] 12 [3.66] 12 [3.66] 11 [3.35]

5/16” [7.93]* 15 [4.57] 11 [3.35] N/A N/A N/A N/A

-039 3/8” [9.53] 3/8” [9.52] 18 [5.49] 17 [5.18] 15 [4.57] 13 [3.96] 12 [3.66] 10 [3.05]

1/2” [12.70] 20 [6.10] 19 [5.79] 19 [5.79] 19 [5.79] 18 [5.49] 18 [5.49]

5/16” [7.93]* 25 [10.36] 24 [7.32] N/A N/A N/A N/A

-048 3/8” [9.53] 3/8” [9.52] 25 [11.89] 36 [10.97] 34 [10.36] 32 [9.75] 29 [8.84] 23 [7.01]

1/2” [12.70] 25 [12.50] 40 [12.19] 40 [12.19] 39 [11.89] 39 [11.89] 38 [11.58]

3/8” [9.52]* 25 [11.28] 33 [10.06] 30 [9.14] 25 [7.62] 15 [4.57] N/A

-060 3/8” [9.53]

1/2” [12.70] 25 [11.89] 39 [11.89] 38 [11.58] 37 [11.28] 37 [11.28] 36 [10.97]

25 [7.62] 50 [15.24] 75 [22.86] 100 [30.48] 125 [38.1] 150 [45.72]

Liquid Line Size

Outdoor Unit Below Indoor Coil (Cooling Only - Does not apply to Heat Pumps)

Total Equivalent Length - Feet [m]

TABLE 4

(-)ASL LIQUID LINE SIZING

NOTES: N/A = Application Not Recommended

*Standard Line Size

NOTES: N/A = Application Not Recommended *Standard Line Size

Page 14

ABLE 5

(

-)ASL SUCTION LINE SIZING

SUCTION LINE SIZE - OUTDOOR UNIT ABOVE INDOOR COIL

R-410A System

Capacity

Model

Line Size

Connection

Size (Inch I.D.) [mm]

Line Size

(Inch O.D.)

[mm]

Outdoor Unit ABOVE Indoor Coil (Cooling Only - Does not apply to Heat Pumps)

Total Equivalent Length - Feet [m]

5/8” [15.88] Same as Liquid Line Size Table

-024 3/4” [19.05] 3/4” [19.05]* NA

7/8” [22.23] NA

5/8” [15.88] Same as Liquid Line Size Table

-036 & -039 3/4” [19.05] 3/4” [19.05]* NA

7/8” [22.23] NA

5/8” [15.88] Same as Liquid Line Size Table

-048 7/8” [22.22] 3/4” [19.05] Same as Liquid Line Size Table

7/8” [22.23]* NA

3/4” [19.05] Same as Liquid Line Size Table

-060 7/8” [22.22] 7/8” [22.23]* NA

1-1/8” [28.58] NA

25 [7.62] 50 [15.24] 75 [22.86] 100 [30.48] 125 [38.1] 150 [45.72]

Suction Line Size

UCTION LINE SIZE - OUTDOOR UNIT BELOW INDOOR COIL

R-410A

System

Capacity

Model

Line Size

Connection

Size

(Inch I.D.)

[mm]

Line Size

(Inch O.D.)

[mm]

Outdoor Unit BELOW Indoor Coil (Cooling Only - Does not apply to Heat Pumps)

Total Equivalent Length - Feet [m]

5/8” [15.88] Same as Liquid Line Size Table

-024 3/4” [19.05] 3/4” [19.05]* Same as Liquid Line Size Table NA

7/8” [22.23] NA

5/8” [15.88] Same as Liquid Line Size Table

-036 & -039 3/4” [19.05] 3/4” [19.05]* Same as Liquid Line Size Table

7/8” [22.23] NA

5/8” [15.88] Same as Liquid Line Size Table

-048 7/8” [22.22] 3/4” [19.05] Same as Liquid Line Size Table

7/8” [22.23]* Same as Liquid Line Size Table NA

3/4” [19.05] Same as Liquid Line Size Table

-060 7/8” [22.22] 7/8” [22.23]* Same as Liquid Line Size Table

1-1/8” [28.58] NA

25 [7.62] 50 [15.24] 75 [22.86] 100 [30.48] 125 [38.1] 150 [45.72]

Suction Line Size

NOTES: Using suction line larger than shown in chart will result in poor oil return. N/A = Application Not Recommended *Standard Line Size

Page 15

• For best operation, keep tubing run as short as possible with a minimum number of elbows or bends.

• Locations where the tubing will be exposed to mechanical damage should be a

voided. If it is necessary to use such locations, the copper tubing should be

housed to prevent damage.

• If tubing is to be run underground, it must be run in a sealed watertight chase.

•

Use care in routing tubing and do not kink or twist. Use a good tubing bender on the vapor line to prevent kinking.

• Route the tubing using temporary hangers, then straighten the tubing and install permanent hangers. Line must be adequately supported.

• The vapor line must be insulated to prevent dripping (sweating) and prevent performance losses. Armaflex and Rubatex are satisfactory insulations for this purpose. Use 1/2” minimum insulation thickness, additional insulation may be required for long runs.

• Check Table 3 for the correct vapor line size. Check Table 4 for the correct liquid line size.

7.5 Tubing Connections

Indoor coils have only a holding charge of dry nitrogen. Keep all tube ends sealed until connections are to be made.

• Use type “L” copper refrigeration tubing. Braze the connections with the following alloys:

– copper to copper - 5% – Silver alloy (no flux) – copper to steel or brass - 35% – silver alloy (with flux)

• Be certain both refrigerant shutoff valves at the outdoor unit are closed.

• Clean the inside of the fittings and outside of the tubing with steel wool or sand cloth before soldering. Always keep chips, steel wool, dirt, etc., out of the inside when cleaning.

• Assemble tubing part way into fitting. Apply flux all around the outside of the tubing and push tubing into stop. This procedure will keep the flux from getting inside the system.

• Remove the cap and schrader core from service port to protect seals from heat damage.

• Use an appropriate heatsink material around the copper stub and the service valves before applying heat.

• IMPORTANT: Do not braze any fitting with the TEV sensing bulb attached.

• Braze the tubing between the outdoor unit and indoor coil. Flow dry nitrogen into a service port and through the tubing while brazing.

• After brazing – use an appropriate heatsink material to cool the joint and remove any flux residue.

• The service valves are not backseating valves. To open the valves, remove the valve cap with an adjustable wrench. Insert a 3/16” or 5/16” hex wrench into the stem. Back out counterclockwise.

• Replace the valve cap finger tight then tighten an additional 1/2 hex flat for a metal-to-metal seal.

7.6 Leak Testing

• Pressurize line set and coil through service fittings with dry nitrogen to 150 PSIG maximum. Leak test all joints using liquid detergent. If a leak is found, recover pressure and repair.

WARNING

DO NOT USE OXYGEN TO PURGE LINES OR PRESSURIZE SYSTEM FOR LEAK TE ST. OXYGEN REACTS VIOLEN TLY WITH OIL, WHICH CAN CAUSE AN EXPLOSION RESULTING IN SEVERE PERSONAL INJURY OR DEATH.

Page 16

8.0 DUAL DRIVE COMPRESSORS

The -039, -048, & -060 condensing units contain two compressors to deliver maximum efficiency and comfort. The Dual Drive Compressors are sized to increase run times at first stage operation (partial capacity). When additional capacity is needed, a two stage thermostat energizes both compressors to deliver full rated capacity.

8.1 Compressor Identification

The individual compressors are identified as Compressor A and Compressor B. When facing the access panel, Compressor A is on the left and Compressor B is on the right. (See Figure 4.)

8.2 Comfort Control2System™ Control Identification

The Dual Drive condensing units use one (1) serial communicating control per compressor. There is a label in the control box that identifies each control/compressor combination. When facing the access panel, Compressor A is controlled by the lefthand board and Compressor B is controlled by the right-hand board.

FIGURE 5

FIGURE 4

DUAL DRIVE COMPRESSORS

COMPRESSOR A COMPRESSOR B

Page 17

8.3 Comfort Control2System™ Control Operation

A Dual Drive unit has two controls instead of a single control. A Dual Drive control is the same as any residential communicating control. Therefore, the features such as fault recall and the operation of the test button are the same as any JEC control.

The two controls are identical and interchangeable. This allows the controls to be swapped for troubleshooting if one of the controls is suspected of being defective.

Only one of the controls can be connected to a communicating network. The control that is connected to the communications network is the primary control. It is located on the left hand side when facing the unit. The primary control puts out a 24 VAC signal to the secondary control when second stage is called for.

Each control will have a separate history of faults (up to 6) which can be accessed b

y pressing the “Test” and “SW2” buttons. Only the primary control fault history can

be accessed by a service tool or the thermostat.

As with any JEC unit, the airflow will be automatically optimized when the system is used in communicating mode. If a conventional thermostat is used with the system, the dipswitches in the air handler must be set to provide the correct airflow.

9.0 COMPRESSOR CRANKCASE HEAT (CCH)

CCH is standard on these models due to refrigerant migration during the off cycle that can result in a noisy start up.

Crankcase Heater Operation:

Supplemental Crankcase heat is required to prevent refrigerant migration in systems with relatively high system refrigerant charges. Each Dual Drive compressor has its own crankcase heater.

The crankcase heater control is integrated into the Comfort Control

System™ and

is designed for maximum energy savings.

Summary of operation:

• The crankcase heater is off whenever the compressor is running.

• Once the compressor turns off, the crankcase heater control (CCH) begins the

two-hour timer countdown.

• If the compressor stays off for two hours, the CCH turns on the crankcase heater.

All heaters are located on the lower half of the compressor shell. Its purpose is to drive refrigerant from the compressor shell during long off cycles, thus preventing damage to the compressor during start-up.

At initial start-up or after extended shutdown periods, make sure the heater is energized for at least 12 hours before the compressor is started. (Disconnect switch on and wall thermostat off.)

10.0 HARD START COMPONENTS

Factory-installed start components are standard on all models.

11.0 HIGH AND LOW PRESSURE CONTROLS

10.0 (HPC AND LPC)

These controls keep the compressor from operating in pressure ranges which can cause damage to the compressor. Both controls are in the low voltage control circuit.

High pressure control (HPC) is an automatic-reset which opens near 610 PSIG and closes near 420 PSIG.

The low pressure control (LPC) is an automatic-reset which opens near 50 PSIG and closes near 95 PSIG.

NOTE: HPC and LPC are monitored by the Comfort Control2System™. See Section 12.0.

Page 18

11.1 Evacuation Procedure

Evacuation is the most important part of the entire service procedure. The life and efficiency of the equipment is dependent upon the thoroughness exercised by the s

erviceman when evacuating air and moisture from the system.

Air in the system causes high condensing temperatures and pressure, resulting in increased power input and non-verifiable performance.

Moisture chemically reacts with the refrigerant and oil to form corrosive hydrofluoric and hydrochloric acids. These attack motor windings and parts, causing breakdown.

After the system has been leak checked and proven sealed, connect the vacuum pump and evacuate system to 500 microns. The vacuum pump must be connected to both the high and low sides of the system through adequate connections. Use the largest size connections available since restrictive service connections may lead to false readings because of pressure drop through the fittings.

IMPORTANT: Compressors (especially scroll type) should never be used to evacuate the air conditioning system because internal electrical arcing may result in a damaged or failed compressor.

With thermostat in the “Off” position, turn the power on to the furnace and the heat pump. Start the heat pump and the furnace with the thermostat. Make sure the blower is operating.

12.0 CONDENSING UNITS EQUIPPED WITH THE

11.0 COMFORT CONTROL

SYSTEM™

Comfort Control2is the next generation of the Integrated Compressor Control (ICC) and is an integral part of the Comfort Control

System™ with the following features:

12.1 Control Description (see Figure 4) Dual 7-Segment LED

• Displays status and diagnostic codes (See Status and Diagnostic Description)

• Displays diagnostic/fault recall (See Test Mode/Fault Recall)

Red LED (Y1)

• Y1 red LED (solid on) indicates Y1 call from thermostat is present

Line Voltage Connector

• Line voltage is connected to control board at lug terminals L1 & L2

• Maximum wire size accepted is 6 AWG copper wire

• # 4 – 6 AWG 45 in/lbs # 8 AWG 40 in/lbs # 10 – 14 AWG 35 in/lbs (Check wire terminations annually)

CAUTION

THE COMPRESSOR HAS AN INTERNAL OVERLOAD PROTECTOR. UNDER SOME CONDITIONS, IT CAN TAKE UP TO 2 HOURS FOR THIS OVERLOAD TO RESET. MAKE SURE OVERLOAD HAS HAD TIME TO RESET BEFORE C

ONDEMNING THE COMPRESSOR.

CAUTION

COMFORT CONTROL

SYSTEM™ CONTROL WIRING

Page 19

Compressor Control (K2)

• Sealed single pole compressor relay switch with optical feedback feature (arc detection)

Thermostat Connector (E2)

• R – 24VAC from the indoor unit 24VAC transformer (40 VA minimum)

• C – 24VAC Common from the indoor unit 24VAC transformer

• 1-Data: System Communications Line 1

• 2-Data: System Communications Line 2

Low Volt Fuse

• If required replace with 3 A automotive ATC style blade fuse

Low Pressure Control (LPC Input)

• Low-pressure control is factory installed

• Low pressure control is an automatic resetting device

High Pressure Control (HPC Input)

• High-pressure control is factory installed

• High pressure control is an automatic resetting device

Ambient Temperature Sensor (included with all applications)

• Included with all applications

TEST and SW2 Buttons

• TEST and SW2 buttons used to enter Test and Fault Recall Mode

Memory Card

• The memory card stores all unit information.

• The unit information is called shared data.

• The shared data is all the information needed for proper unit operation.

FIGURE 6

COMFORT CONTROL2BOARD

COMPRESSOR WIRING CONNECTOR

O.D. FAN (OFM) RELAY

COMPRESSOR CONTROL (K2)

ICC (INTEGRATED COMPRESSOR CONTROL)

TEST BUTTON

7-SEGMENT LED

AMBIENT DEFROST CONTROL

DEFROST SENSOR

SW2 BUTTON

RED LED (Y1)

LOW VOLT FUSE

THERMOSTAT CONNECTION (E2)

LOW PRESSURE CONTROL INPUT

HIGH PRESSURE CONTROL INPUT

{

MEMORY CARD

LINE VOLTAGE CONNECTION

COMFORT CONTROL

SYSTEM™ CONTROL WIRING

Page 20

12.2 Comfort Control2System™ Control Wiring

An HVAC system equipped with Comfort Control2System™ consists of:

• Heat pump or condensing unit equipped with Comfort Control

• Air handler or furnace equipped with Comfort Control

• Comfort Control2thermostat The four 18AWG low voltage control wires must be installed from the thermostat to

the indoor unit and from indoor unit to the outdoor unit. The wire length between the thermostat and indoor unit should not be greater than 100 feet. The wire length between the indoor unit and outdoor unit should not be greater than 125 feet.

IIMMPPOORRTTAANNTT::

If the installed system does not meet these requirements, the system must be wired using traditional control wiring, reference Section 12.7 Conventional 24VAC Thermostat Control Wiring.

Serial communications require four (4) control wires for unit operation:

R – 24VAC C – 24VAC common 1 – Data wire 1 2 – Data wire 2

NNoottee::

Comfort Control2System™ requires 18 AWG thermostat wire.

NNoottee::

Term dipswitches should be in ON position.

If the low voltage control wiring is run in conduit with the power supply, Class I insulation is required. Class II insulation is required if run separate. Low voltage wiring may be run through the insulated bushing provided in the 7/8 hole in the base panel, up to and attached to the pigtails from the bottom of the control box. Conduit can be run to the base panel if desired by removing the insulated bushing.

The serial communicating air handler or serial communicating furnace transformer is equipped with a 24 volt, 50 VA transformer for proper system operation. See the wiring diagram in Figure 5 for reference.

12.3 Comfort Control2System™ Diagnostic Codes in Dual Drive

12.3 Condensing Units

Comfort Control2System™ for compressor A is connected to the serial communicating network via Data Wire 1 and Data Wire 2. Each Comfort Control

System™

Control Board maintains separate fault history for the compressor it controls. Fault codes for compressor A can be retrieved using a service tool or via the installer menus. The fault codes for compressor B are accessible by two methods.:

1. Using a service tool plugged directly into the compressor B Comfort Control

board.

COMFORT CONTROL

SYSTEM™ CONTROL WIRING

FIGURE 7

TYPICAL COMFORT CONTROL2SYSTEM™ WIRING DIAGRAM

Indoor Unit

WIRING INFORMATION Line Voltage –Field Installed - - - - - –Factory Standard

Communicating Thermostat

Outdoor Unit

Page 21

SERIAL COMMUNICATIONS CONTROL WIRING

COMFORT CONTROL

SYSTEM™ CONTROL WIRING

2. Reading the codes directory off the dual 7-segment LEDs on the Comfort Control

board of compressor B.

IMPORTANT: Fault codes for compressor B are NOT accessible via the serial comm

unicating network.

12.4 Comfort Control2ICC Control Operation

IInnssttaallllaattiioonn VVeerriiffii ccaattiioonn

• 24V AC power on R&C must be present at the ICC for it to operate

• Line voltage must be present at the ICC for the compressor and the outdoor fan

to operate

• The ICC displays a “0” for standby mode. Standby mode indicates line voltage

and 24VAC are present at the ICC and there is not a command for unit operation from the serial communicating thermostat.

Zero (0) displayed The unit is in standby

CCoommmmaanndd ffoorr CCoommpprreessssoorr OOppeerraattiioo nn ((YY11 LLEEDD))

• If a command for compressor operation is received by the ICC (first stage/second

stage cooling or first stage/second stage heating), the red Y1 LED will illuminate.

• The ICC has an on/off fan delay of one (1) second for each stage of heating or

cooling.

• The ICC ignores the low pressure control for the first 90 seconds of compressor

operation.

• The dual 7-segment LED displays five (5) operational status codes.

11)) FFiirrsstt SSttaaggee CCoooolliinngg OOppeerraattiioonn

– When the ICC receives a command for first

stage cooling operation, a lower case “c” is displayed on the dual 7-segment LEDs.

Lower case “c” indicates first stage cooling operation

22)) SSeeccoo nndd SSttaaggee CCoooo lliinngg OOppeerraattii oonn

– When the ICC receives a command for second stage cooling operation, an upper case “C” is displayed on the dual 7segment LEDs.

Upper case “C” indicates second stage cooling operation

33--mmii nnuuttee AAnnttii--sshhoo rrtt CCyyccllee TTiimmeerr

• The ICC has a built in 3-minute time delay between compressor operations to protect the compressor against short cycling. The dual 7-segment LEDs will flash “c” or “C” while the short cycle timer is active and a command for unit operation is received.

Flashing lower case c A command for first stage cooling has been received

Flashing upper case C A command for second stage cooling has been received

• The 3-minute time delay can be bypassed when a command for compressor operation is present by pressing the TEST button for 1 second and releasing. The compressor will begin operation and the dual 7-segment will stop flashing.

Figure X – Typical Serial Communication Wiring Diagram

Zero (0) displayed The unit is in standby

Page 22

3300 SSeeccoonndd MMiinniimmuumm RRuunn TTii mmeerr

• The ICC has a built in 30 second minimum unit run time. If a command for compressor operation is received by the ICC and the command is removed, the compressor will continue to operate for 30 seconds. The dual 7-segment LEDs will flash “c” or “C” while the minimum run timer is active.

11 SSeeccoonndd CCoommpprreess ssoorr//FFaann DDeellaayy

• The ICC starts/stops the outdoor fan one (1) second after the start/stop of the compressor upon a command for compressor operation to minimize current inrush and/or voltage drop.

12.5 Active Compressor Protection Mode

• The ICC actively protects the compressor from harmful operation during a fault condition.

• When the ICC detects a condition that could damage the compressor, the ICC will enter active protection mode and lockout compressor operation

• The condition causing active protection must be resolved then the ICC can be reset to restart the system.

• There are five (5) active protection modes:

11)) LLooww PPrreessss uurree CCoonnttrrooll LLoocckkoo uutt

• The ICC will display a flashing “L” followed by a flashing 21 when a low pressure control lockout occurs.

• The ICC addresses low pressure control faults differently depending on the mode of unit operation (cooling or heating mode).

Active Protection – Code L21 – Open low pressure control

CCoooolliinngg MMooddee

• If the LPC opens three (3) times during the same command for cooling operation, the ICC will lockout the compressor to keep it from continuing to operate and flash a L” on the dual 7-segment LEDs followed by a “21”.

IIMMPPOORRTTAANNTT::

This mode of active protection must be manually reset.

22)) HHiigg hh PPrreessssuurree CCoonn ttrrooll LLoo cckkoouutt

• If the HPC opens three (3) times during the same command for unit operation, the ICC will lockout the compressor to keep it from continuing to operate and flash a L” on the dual 7-segment LEDs followed by a “29”.

Active Protection – Code L29 – Open high pressure control

IIMMPPOORRTTAANNTT::

This mode of active protection must be manually reset.

33)) LLoocckkeedd RRoottoo rr

• The ICC will display a flashing “L” followed by a flashing “04” when a locked rotor condition occurs.

COMFORT CONTROL

SYSTEM™ CONTROL WIRING

Page 23

Active Protection – Code L4 – Locked rotor

If the ICC detects the compressor has run less than 15 seconds for four (4) consecutive starts during the same command for unit operation, the ICC will lockout the compressor to keep it from continuing to operate and flash a “L” on the dual 7segment LEDs followed by a “04”.

IIMMPPOORRTTAANNTT::

This mode of active protection must be manually reset.

44)) CCoommpp rreessssoo rr PPrrootteecctt oorr TTrrii pp

• If ICC detects a protector trip it will display a “P”. If protector doesn’t reset within 4 hours, the ICC display will change to “5”.

Compressor Protector – Code P – Protector Trip

55)) OOppeenn SSttaarrtt CCiirrccuuiitt LL oocckkoouutt

• The ICC will display a flashing “L” followed by a flashing “06” when an open start circuit condition occurs.

Active Protection – Code L6 – Compressor open start circuit

If the ICC detects current in the run circuit without current present in the start circuit, , the ICC will lockout the compressor to keep it from continuing to operate and flash a “L” on the dual 7-segment LEDs followed by a “06”.

IIMMPPOORRTTAANNTT::

This mode of active protection must be manually reset.

66)) OOppeenn RRuunn CCiirrccuuiitt LLoocckkoouutt

• The ICC will display a flashing “L” followed by a flashing “07” when an open start circuit condition occurs.

Active Protection – Code L7 – Compressor open run circuit

If the ICC detects current in the start circuit without current present in the run circuit, , the ICC will lockout the compressor to keep it from continuing to operate and flash a “L” on the dual 7-segment LEDs followed by a “07”.

IIMMPPOORRTTAANNTT::

This mode of active protection must be manually reset. EExxiittiinngg AAcc ttiivvee CCoo mmpprreessssoorr PPrrootteeccttii oonn LLoocc kkoouu tt Three are three methods to reset the ICC after an active protection lockout:

1) Cycle the line voltage to the unit

2) Cycle 24VAC to the ICC (remove the R or C connection to the ICC)

3) Push the TEST button down with an insulated probe for one (1) second and release

Note: The ICC will attempt to start the unit when the TEST button is pressed and released

NNoottee::

The preferred method of resetting the ICC is to push the TEST button down

for one (1) second.

12.6 Test and Fault Recall Modes

TTeesstt MMoodd ee ((TTeesstt BBuuttttoonn oonn tthhee IICCCC))

• Enter TEST mode by pressing the TEST button with an insulated probe for one (1) second and release.

COMFORT CONTROL

SYSTEM™ CONTROL WIRING

Lower case “d” indicates defrost operation (in heating mode)

3-minute Anti-short Cycle Timer

Page 24

• The TEST mode causes the ICC to do the following

1) Resets the ICC from any active protection lockout mode

2) Resets the 3-minute anti-short cycle timer

3) Energizes the unit without a command for unit operation

• If the 3-minute anti-short cycle timer or 30 second minimum run timer is active (a flashing “c”, “C”, “h”, or “H” is displayed on the dual 7-segment LEDs) and a command for unit operation is present, TEST mode causes:

1) A “t” to display momentarily on the dual 7-segment display

Lower case “t”

2) The compressor will start and the outdoor fan will operate

3) The display will change to a steady “c” or “C” to show the current command for

unit operation.

Note: If a command for unit operation is present at the end of TEST mode will cause the unit to continue to operate.

• If no command for unit operation is present, TEST mode causes

1) A steady “t” appears on the dual 7-segment LEDs

2) The compressor will start

3) The compressor will turn off after 5-seconds. Note: Entering TEST mode without a command for unit operation will cause the

compressor to run 5-seconds.

FFaauulltt RReeccaallll MMooddee ((TTEESSTT aanndd SSWW22 BBuuttttoonnss))

• Enter

FFAAUULL TT RREECCAALLLL

mode by pressing the

TTEESSTT

and

SSWW22

buttons at the

same time with insulated probes for one (1) second and release.

• When entering and exiting FAULT RECALL mode the top and bottom segments of the dual 7-segment LEDs will illuminate.

Fault Recall Mode – the top and bottom segments on the right side are illuminated

• When entering

FFAAUULLTT RREECCAALLLL

mode, the ICC will automatically scroll through

stored faults on the dual 7-segment LEDs.

• Each fault is displayed one time with the top right hand segment of the dual 7segment display activated between faults.

• Each fault is displayed with the most recent fault displayed first.

• A maximum of six individual faults can be stored

• A maximum of three consecutive identical faults are stored.

• A “0” will be displayed with no faults are stored

• The ICC will automatically exit the

FFAAUULLTT RREECCAALLLL

mode after displaying stored

faults

CClleeaarr FFaauulltt HHiiss ttoorryy ((TTEESSTT aanndd SSWW22 BBuuttttoonnss))

• Clear FAULT HISTORY by pressing both TEST and SW2 button for five (5) seconds with insulated probes and release.

• The top and bottom segments of the dual 7-segment LEDs flash to indicate the history has been cleared.

Fault history is cleared with the top and bottom LED segments flash

NOTE: The memory card for the system has specific shared data for this system. The memory card is attached to the control box with a tether. The tether has an identification tag that can be used to identify the memory card. For the system data faults d1 through d8 reference the label on the memory card tether.

Lower case “t”

Fault Recall Mode – the top and bottom segments illuminated

Lower case “t”

Fault Recall Mode – the top and bottom segments illuminated

COMFORT CONTROL

SYSTEM™ CONTROL WIRING

Page 25

ICC Diagnostic Codes

Descriptions of the ICC diagnostic codes are provided below:

12.7

COMFORT CONTROL2SYSTEM™ CONTROL WIRING

AND

CONVENTIONAL THERMOSTAT WIRING

ICC DIAGNOSTIC CODES

Dual 7-Segment

LEDs Display

Code

Diagnostic Description

0 – Standby No command for unit operation

Normal operation

c - First Stage Cooling Unit has received a command for first stage cooling

Normal operation

c - Anti-short cycle timer (3 minutes) or Minimum run timer (30 seconds) active

• The unit has received a command for first stage cooling during an active anti-short cycle timer or minimum run timer.

• Wait until unit timer has expired or press the TEST button to defeat short cycle delay.

C - Second Stage Cooling Unit has received a command for second stage cooling

Normal operation

C - Anti-short cycle timer (3 minutes) or Minimum run timer (30 seconds) active

• The unit has received a command for second stage cooling during an active anti-short cycle timer or minimum run timer.

• Wait unit timer has expired or press the TEST button to defeat short cycle delay.

Status/Possible Cause – Troubleshooting

Information

7-Segment

LEDs Display

Code Diagnostic Description

Status/Possible Cause – Troubleshooting

Information 0 – Standby No command for unit operation

Normal operation

c - First Stage Cooling Unit has received a command for first stage cooling

Normal operation

7-Segment

LEDs Display

Code Diagnostic Description

Status/Possible Cause – Troubleshooting

Information 0 – Standby No command for unit operation

Normal operation

c - First Stage Cooling Unit has received a command for first stage cooling

Normal operation

FLASHING

c - Anti-short cycle timer (3 minutes) or Minimum run timer (30 seconds) active

• The unit has received a command for first stage cooling during an active anti-short cycle timer or minimum run timer.

• Wait until unit timer has expired or press the TEST button to reset timer.

7-Segment

Code Diagnostic Description

Status/Possible Cause – Troubleshooting

Information 0 – Standby No command for unit operation

Normal operation

c - First Stage Cooling Unit has received a command for first stage cooling

Normal operation

FLASHING

c - Anti-short cycle timer (3 minutes) or Minimum run timer (30 seconds) active

• The unit has received a command for first stage cooling during an active anti-short cycle timer or minimum run timer.

• Wait until unit timer has expired or press the TEST button to reset timer.

C - Second Stage Cooling Unit has received a command for second stage cooling

Normal operation

FLASHING

C - Anti-short cycle timer (3 minutes) or Minimum run timer (30 seconds) active

• The unit has received a command for second stage cooling during an active anti-short cycle timer or minimum run timer.

• Wait unit timer has expired or press the TEST button to reset timer.

t - Test Mode The ICC is in TEST mode

7-Segment EDs Display

Code Diagnostic Description

tatus/Possible Cause – Troubleshooting

Information 0 – Standby No command for unit operation

Normal operation

- First Stage Cooling Unit has received a command for first stage cooling

Normal operation

c - Anti-short cycle timer (3 minutes) or M

inimum run timer (30 seconds) active

• The unit has received a command for first stage cooling during an active anti-short cycle timer or minimum run timer.

• Wait until unit timer has expired or press the TEST button to reset timer.

C - Second Stage Cooling Unit has received a command for second stage cooling

ormal operation

C - Anti-short cycle timer (3 minutes) or M

inimum run timer (30 seconds) active

•

The unit has received a command for second

stage cooling during an active anti-short cycle timer or minimum run timer.

• Wait unit timer has expired or press the TEST button to reset timer.

h1 - First Stage Heat Pump Unit has received a command for first stage heat pump

Normal operation

h1 - Anti-short cycle timer (3 minutes) or Minimum run timer (30 seconds) active

• The unit has received a command for first stage heat pump during an active anti-short cycle timer or minimum run timer.

• Wait unit timer has expired or press the TEST button to reset timer.

h2 - Second Stage Heat Pump Unit has received a command for second stage heat pump

Normal operation

h2 - Anti-short cycle timer (3 minutes) or Minimum run timer (30 seconds) active

• The unit has received a command for second stage heat pump during an active anti-short cycle timer or minimum run timer.

• Wait unit timer has expired or press the TEST button to reset timer.

d - Defrost Active The unit is undergoing a defrost cycle

Normal operation

t - Test Mode The ICC is in TEST mode

7-Segment

Code Diagnostic Description

Status/Possible Cause – Troubleshooting

Information 0 – Standby No command for unit operation

Normal operation

c - First Stage Cooling Unit has received a command for first stage cooling

Normal operation

FLASHING

c - Anti-short cycle timer (3 minutes) or Minimum run timer (30 seconds) active

• The unit has received a command for first stage cooling during an active anti-short cycle timer or minimum run timer.

• Wait until unit timer has expired or press the TEST button to reset timer.

C - Second Stage Cooling Unit has received a command for second stage cooling

Normal operation

7-Segment

LEDs Display

Code Diagnostic Description

Status/Possible Cause – Troubleshooting

Information 0 – Standby No command for unit operation

Normal operation

P – Protector Trip A command for compressor operation is present but no current is measured to the compressor

• Motor protector open

• Line voltage disconnected

d1 – No Shared Data

ELECTRONICS GROUP TO

DESCRIBE

d3 – Airflow CFM Mismatch The indoor air mover (air handler/furnace) cannot supply the required airflow for proper system operation

• Misapplied/wrong indoor air mover – replace with properly sized air handler/furnace.

P – Protector Trip A command for compressor operation is present but no current is measured to the

• Motor protector open

• Line voltage disconnected

01 – Long Run Time (Compressor) The compressor has continuously run for more than 18 hours in the cooling mode.

• Low refrigerant charge

• Air ducts have substantial leakage

• Dirty indoor air filter

• Dirty outdoor coil

d1 – No Shared Data

ELECTRONICS GROUP TO

DESCRIBE

d3 – Airflow CFM Mismatch The indoor air mover (air handler/furnace) cannot supply the required airflow for proper system operation

• Misapplied/wrong indoor air mover – replace with properly sized air handler/furnace.

P – Protector Trip A command for compressor operation is present but no current is measured to the compressor

• Motor protector open

• Line voltage disconnected

01 – Long Run Time (Compressor) The compressor has continuously run for more than 18 hours in the cooling mode.

• Low refrigerant charge

• Air ducts have substantial leakage

• Dirty indoor air filter

02 – High Side Fault Compressor limit has opened four (4) times within a call for operation

• Outdoor coil is dirty (cooling mode)

• Outdoor fan is not running (cooling mode)

• Dirty indoor coil or filter (heating mode)

• Indoor blower is not running (heating mode)

• Liquid line restriction

• Excessive refrigerant charge

d1 – No Shared Data

ELECTRONICS GROUP TO

DESCRIBE

d3 – Airflow CFM Mismatch The indoor air mover (air handler/furnace) cannot supply the required airflow for proper system operation

• Misapplied/wrong indoor air mover – replace with properly sized air handler/furnace.

P – Protector Trip A command for compressor operation is present but no current is measured to the compressor

• Motor protector open

• Line voltage disconnected

01 – Long Run Time (Compressor) The compressor has continuously run for more than 18 hours in the cooling mode.

• Low refrigerant charge

• Air ducts have substantial leakage

• Dirty indoor air filter

• Dirty outdoor coil

02 – High Pressure Control Open The ICC detects the HPC is open.

Reference ICC codes:

• 21

• L21

• 29

03 – Short Cycling The ICC detects the run time for the past four (4) compressor cycles is less than three (3) minutes each.

• Check thermostat wire connections (R, C, 1, &

• Check thermostat location in zone (too close to discharge grill)

d1 – No Shared Data

ELECTRONICS GROUP TO

DESCRIBE

d3 – Airflow CFM Mismatch The indoor air mover (air handler/furnace) cannot supply the required airflow for proper system operation

• Misapplied/wrong indoor air mover – replace with properly sized air handler/furnace.

P – Protector Trip A command for compressor operation is present but no current is measured to the compressor

• Motor protector open

• Line voltage disconnected

01 – Long Run Time (Compressor) The compressor has continuously run for more than 18 hours in the cooling mode.

• Low refrigerant charge

• Air ducts have substantial leakage

• Dirty indoor air filter

• Dirty outdoor coil

02 – High Pressure Control Open The ICC detects the HPC is open.

Reference ICC codes:

• 21

• L21

• 29

• L29

03 – Short Cycling The ICC detects the run time for the past four (4) compressor cycles is less than three (3) minutes each.

• Check thermostat wire connections (R, C, 1, &

• Check thermostat location in zone (too close to

L4 – Locked Rotor The ICC detects four (4) consecutive protector trips have occurred and the average run time for each trip is less than 15 seconds

• Bad run capacitor

• Low line voltage

• Excessive refrigerant in compressor

• Seized bearings in compressor

Page 26

Dual 7-Segment

LEDs Display

Code

Diagnostic Description

Status/Possible Cause – Troubleshooting

Information

06 – Compressor Open Start Circuit The ICC detects current in the Run circuit but not in the Start circuit of the compressor four (4) times in one compressor call

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

• Check compressor windings for continuity

05 – Open circuit (Compressor will not Run)

• The ICC has received a command for unit operation but no current is present in the start and run circuits

• The ICC will attempt to restart the unit every five (5) minutes for four (4) attempts. After that, the ICC will attempt a restart every twenty (20) minutes for up to four (4) hours.

• The ICC has had a protector trip for longer than 4 hours.

• Check for damaged, miswired, or wrong run c

apacitor

• Check for broken wires, loose connectors, or miswired compressor

• Check compressor windings for continuity

• Check for open compressor internal protector

d1 – No Shared Data

ELECTRONICS GROUP TO

DESCRIBE

d3 – Airflow CFM Mismatch T

he indoor air mover (air handler/furnace) cannot supply the required airflow for proper system operation

•

Misapplied/wrong indoor air mover – replace

ith properly sized air handler/furnace.

P – Protector Trip A command for compressor operation is present but no current is measured to the compressor

•

Motor protector open

•

Line voltage disconnected

1 – Long Run Time (Compressor) The compressor has continuously run for m

ore than 18 hours in the cooling mode.

• Low refrigerant charge

•

Air ducts have substantial leakage

• Dirty indoor air filter

• Dirty outdoor coil

02 – High Pressure Control Open The ICC detects the HPC is open.

Reference ICC codes:

• 21

• L21

• 29

• L29

03 – Short Cycling The ICC detects the run time for the past four (4) compressor cycles is less than three (3) minutes each.

•

Check thermostat wire connections (R, C, 1, &

)

•

Check thermostat location in zone (too close to

ischarge grill) L4 – Locked Rotor The ICC detects four (4) consecutive p

rotector trips have occurred and the average run time for each trip is less than 15 seconds

• Bad run capacitor

• Low line voltage

• Excessive refrigerant in compressor

• Seized bearings in compressor

05 – Open Circuit (Compressor will not Run)

• The ICC has received a command for

unit operation but no current is present in t

he start and run circuits.

• The ICC will attempt to restart the unit

every five (5) minutes for four (4) attempts. After that, the ICC will attempt a restart every twenty (20) minutes for up

•

Check for damaged, miswired, or wrong run

capacitor

•

Check for broken wires, loose connectors, or

miswired compressor

•

Check compressor windings for continuity

• Check for open compressor internal protector

06 – Compressor Open Start Circuit The ICC detects current in the Run circuit but not in the Start circuit of the compressor

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

• Check compressor windings for continuity

1 – No Shared Data

ELECTRONICS GROUP TO

DESCRIBE

3 – Airflow CFM Mismatch The indoor air mover (air handler/furnace) cannot supply the required airflow for proper system operation

• Misapplied/wrong indoor air mover – replace with properly sized air handler/furnace.

– Protector Trip A command for compressor operation is p

resent but no current is measured to the compressor

•

Motor protector open

•

Line voltage disconnected

01 – Long Run Time (Compressor) The compressor has continuously run for more than 18 hours in the cooling mode.

• Low refrigerant charge

• Air ducts have substantial leakage

• Dirty indoor air filter

•

Dirty outdoor coil 02 – High Pressure Control Open T

he ICC detects the HPC is open.

Reference ICC codes:

• 21

• L21

• 29

•

L29 03 – Short Cycling T

he ICC detects the run time for the past

our (4) compressor cycles is less than three

(3) minutes each.

• Check thermostat wire connections (R, C, 1, & 2

)

• Check thermostat location in zone (too close to d

ischarge grill) L4 – Locked Rotor T

he ICC detects four (4) consecutive protector trips have occurred and the average run time for each trip is less than 15 seconds

• Bad run capacitor

• Low line voltage

• Excessive refrigerant in compressor

•

Seized bearings in compressor

05 – Open Circuit (Compressor will not Run)

• The ICC has received a command for

nit operation but no current is present in

the start and run circuits.

• The ICC will attempt to restart the unit

every five (5) minutes for four (4) attempts. After that, the ICC will attempt a restart every twenty (20) minutes for up to four (4) hours.

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

• Check compressor windings for continuity

• Check for open compressor internal protector

06 – Compressor Open Start Circuit The ICC detects current in the Run circuit but not in the Start circuit of the compressor

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

d1 – No Shared Data

LECTRONICS GROUP TO

ESCRIBE

d3 – Airflow CFM Mismatch The indoor air mover (air handler/furnace) cannot supply the required airflow for p

roper system operation

• Misapplied/wrong indoor air mover – replace with properly sized air handler/furnace.

– Protector Trip

command for compressor operation is present but no current is measured to the c

ompressor

• Motor protector open

• Line voltage disconnected

01 – Long Run Time (Compressor) T

he compressor has continuously run for

ore than 18 hours in the cooling mode.

•

Low refrigerant charge

•

Air ducts have substantial leakage

• Dirty indoor air filter

•

Dirty outdoor coil 02 – High Pressure Control Open The ICC detects the HPC is open.

Reference ICC codes:

•

L21

•

• L29

3 – Short Cycling The ICC detects the run time for the past f

our (4) compressor cycles is less than three

(3) minutes each.

• Check thermostat wire connections (R, C, 1, &

• Check thermostat location in zone (too close to discharge grill)

L4 – Locked Rotor The ICC detects four (4) consecutive protector trips have occurred and the a

verage run time for each trip is less than 15

seconds

•

Bad run capacitor

• Low line voltage

•

Excessive refrigerant in compressor

• Seized bearings in compressor

05 – Open Circuit (Compressor will not Run)

• The ICC has received a command for unit operation but no current is present in the start and run circuits.

• The ICC will attempt to restart the unit every five (5) minutes for four (4) attempts. After that, the ICC will attempt a restart every twenty (20) minutes for up to four (4) hours.

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

• Check compressor windings for continuity

• Check for open compressor internal protector

06 – Compressor Open Start Circuit The ICC detects current in the Run circuit but not in the Start circuit of the compressor

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

07 – Compressor Open Run Circuit The ICC detects current in the Start circuit but not in the Run circuit of the compressor four (4) times in one compressor call

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

• Check compressor windings for continuity

d1 – No Shared Data

LECTRONICS GROUP TO

ESCRIBE

d3 – Airflow CFM Mismatch The indoor air mover (air handler/furnace) cannot supply the required airflow for p

roper system operation

• Misapplied/wrong indoor air mover – replace with properly sized air handler/furnace.

– Protector Trip

command for compressor operation is present but no current is measured to the c

ompressor

• Motor protector open

• Line voltage disconnected

01 – Long Run Time (Compressor) T

he compressor has continuously run for

more than 18 hours in the cooling mode.

•

Low refrigerant charge

• Air ducts have substantial leakage

• Dirty indoor air filter

•

Dirty outdoor coil 02 – High Pressure Control Open The ICC detects the HPC is open.

Reference ICC codes:

•

• L21

•

• L29 03 – Short Cycling The ICC detects the run time for the past f

our (4) compressor cycles is less than three

(3) minutes each.

• Check thermostat wire connections (R, C, 1, &

• Check thermostat location in zone (too close to

discharge grill) L4 – Locked Rotor The ICC detects four (4) consecutive protector trips have occurred and the average run time for each trip is less than 15 seconds

• Bad run capacitor

• Low line voltage

• Excessive refrigerant in compressor

• Seized bearings in compressor

05 – Open Circuit (Compressor will not Run)

• The ICC has received a command for

unit operation but no current is present in the start and run circuits.

• The ICC will attempt to restart the unit

every five (5) minutes for four (4) attempts. After that, the ICC will attempt a restart every twenty (20) minutes for up to four (4) hours.

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

• Check compressor windings for continuity

• Check for open compressor internal protector

06 – Compressor Open Start Circuit The ICC detects current in the Run circuit but not in the Start circuit of the compressor

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

• Check compressor windings for continuity

07 – Compressor Open Run Circuit The ICC detects current in the Start circuit but not in the Run circuit of the compressor

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

07 – Compressor Open Run Circuit The ICC detects current in the Start circuit but not in the Run circuit of the compressor

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

• Check compressor windings for continuity

d1 – No Shared Data

LECTRONICS GROUP TO

ESCRIBE

d3 – Airflow CFM Mismatch The indoor air mover (air handler/furnace) cannot supply the required airflow for p

roper system operation

• Misapplied/wrong indoor air mover – replace with properly sized air handler/furnace.

– Protector Trip A command for compressor operation is p

resent but no current is measured to the compressor

•

Motor protector open

• Line voltage disconnected

01 – Long Run Time (Compressor) The compressor has continuously run for more than 18 hours in the cooling mode.

•

Low refrigerant charge

•

Air ducts have substantial leakage

• Dirty indoor air filter

•

Dirty outdoor coil 02 – High Pressure Control Open T

he ICC detects the HPC is open.

Reference ICC codes:

•

L21

• 29

•

L29 0

3 – Short Cycling The ICC detects the run time for the past f

our (4) compressor cycles is less than three

(3) minutes each.

• Check thermostat wire connections (R, C, 1, & 2

)

• Check thermostat location in zone (too close to d

ischarge grill) L4 – Locked Rotor T

he ICC detects four (4) consecutive protector trips have occurred and the a

verage run time for each trip is less than 15

seconds

• Bad run capacitor

• Low line voltage

•

Excessive refrigerant in compressor

• Seized bearings in compressor

05 – Open Circuit (Compressor will not Run)

• The ICC has received a command for

unit operation but no current is present in the start and run circuits.

• The ICC will attempt to restart the unit

every five (5) minutes for four (4) attempts. After that, the ICC will attempt a restart every twenty (20) minutes for up to four (4) hours.

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

• Check compressor windings for continuity

• Check for open compressor internal protector

06 – Compressor Open Start Circuit The ICC detects current in the Run circuit but not in the Start circuit of the compressor

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

• Check compressor windings for continuity

07 – Compressor Open Run Circuit The ICC detects current in the Start circuit but not in the Run circuit of the compressor

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

09 – Low Secondary Volts The secondary voltage at R and C is below 18VAC

• Control transformer overloaded

• Low line voltage

d1 – No Shared Data

ELECTRONICS GROUP TO

DESCRIBE

d3 – Airflow CFM Mismatch T

he indoor air mover (air handler/furnace)

annot supply the required airflow for

proper system operation

• Misapplied/wrong indoor air mover – replace w

ith properly sized air handler/furnace.

P – Protector Trip A command for compressor operation is present but no current is measured to the compressor

• Motor protector open

•

Line voltage disconnected

1 – Long Run Time (Compressor) The compressor has continuously run for more than 18 hours in the cooling mode.

• Low refrigerant charge

• Air ducts have substantial leakage

• Dirty indoor air filter

• Dirty outdoor coil

02 – High Pressure Control Open The ICC detects the HPC is open.

Reference ICC codes:

• 21

• L21

• 29

• L29

03 – Short Cycling The ICC detects the run time for the past four (4) compressor cycles is less than three (3) minutes each.

•

Check thermostat wire connections (R, C, 1, &

•

Check thermostat location in zone (too close to

discharge grill) L4 – Locked Rotor The ICC detects four (4) consecutive protector trips have occurred and the average run time for each trip is less than 15 seconds

• Bad run capacitor

• Low line voltage

• Excessive refrigerant in compressor

• Seized bearings in compressor

05 – Open Circuit (Compressor will not Run)

• The ICC has received a command for

unit operation but no current is present in the start and run circuits.

• The ICC will attempt to restart the unit

every five (5) minutes for four (4) attempts. After that, the ICC will attempt a restart every twenty (20) minutes for up to four (4) hours.

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

• Check compressor windings for continuity

• Check for open compressor internal protector

06 – Compressor Open Start Circuit The ICC detects current in the Run circuit but not in the Start circuit of the compressor

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

• Check compressor windings for continuity

07 – Compressor Open Run Circuit The ICC detects current in the Start circuit but not in the Run circuit of the compressor

• Check for damaged, miswired, or wrong run capacitor

• Check for broken wires, loose connectors, or miswired compressor

• Check compressor windings for continuity

09 – Low Secondary Volts The secondary voltage at R and C is below 18VAC

• Control transformer overloaded

• Low line voltage

21 – Low Pressure Control Open The ICC detects the LPC is open. Note: The low pressure control is ignored for the first 90 seconds of compressor operation

• Unit has low refrigerant charge

• Indoor coil is frozen (cooling mode)

• Dirty indoor coil or filter (cooling mode)

• Indoor blower is not running (cooling mode)

• Outdoor coil is frozen (heating mode)

• Expansion valve is not operating correctly

21 – Low Pressure Control Open The ICC detects the LPC is open. Note: The low pressure control is ignored for the first 90 seconds of compressor operation

• Unit has low refrigerant charge

• Indoor coil is frozen (cooling mode)

• Dirty indoor coil or filter (cooling mode)

• Indoor blower is not running (cooling mode)

• Outdoor coil is frozen (heating mode)

• Outdoor fan is not running (heating mode)

L21 – Active Protection Low Pressure Control Trip

LPC has opened 3 times in the same cooling operation, the ICC has locked out the compressor to protect it. ICC alternately flashes L and 21

21 – Low Pressure Control Open The ICC detects the LPC is open. Note: The low pressure control is ignored for the first 90 seconds of compressor operation

• Unit has low refrigerant charge

• Indoor coil is frozen (cooling mode)

• Dirty indoor coil or filter (cooling mode)

• Indoor blower is not running (cooling mode)

• Outdoor coil is frozen (heating mode)

• Outdoor fan is not running (heating mode)

• Expansion valve is not operating correctly

FLASHING

L21 – Active Protection

Low Pressure

Control Trip

The ICC has locked out the compressor due to three (3) consecutive LPC trips on the same command for unit operation

27 – Low Line Voltage or No Line Voltage Fault

• Check incoming line voltage to the disconnect and unit

• Check wiring connections

21 – Low Pressure Control Open The ICC detects the LPC is open. Note: The low pressure control is ignored for the first 90 seconds of compressor operation

• Unit has low refrigerant charge

• Indoor coil is frozen (cooling mode)

• Dirty indoor coil or filter (cooling mode)

• Indoor blower is not running (cooling mode)

• Outdoor coil is frozen (heating mode)

• Outdoor fan is not running (heating mode)

• Expansion valve is not operating correctly

FLASHING

L21 – Active Protection

Low Pressure

Control Trip

The ICC has locked out the compressor due to three (3) consecutive LPC trips on the same command for unit operation

27 – Low Line Voltage or No Line Voltage Fault

• Check incoming line voltage to the disconnect and unit

• Check wiring connections

28 – High Line Voltage Fault • Check line voltage

21 – Low Pressure Control Open The ICC detects the LPC is open. Note: The low pressure control is ignored for the first 90 seconds of compressor operation

• Unit has low refrigerant charge

• Indoor coil is frozen (cooling mode)

• Dirty indoor coil or filter (cooling mode)

• Indoor blower is not running (cooling mode)

• Outdoor coil is frozen (heating mode)

• Outdoor fan is not running (heating mode)

• Expansion valve is not operating correctly

FLASHING

L21 – Active Protection

Low Pressure

Control Trip

The ICC has locked out the compressor due to three (3) consecutive LPC trips on the same command for unit operation

27 – Low Line Voltage or No Line Voltage Fault

• Check incoming line voltage to the disconnect and unit

• Check wiring connections

28 – High Line Voltage Fault

• Check line voltage

Page 27

Dual 7-Segment

LEDs Display

Code

Diagnostic Description

Status/Possible Cause – Troubleshooting

Information

29 – High Pressure Control Open The ICC detects the HPC is open

• Outdoor coil is dirty (cooling mode)

• Outdoor fan is not running (cooling mode)

• Dirty indoor coil or filter (heating mode)

• Indoor blower is not running (heating mode)

• Liquid line restriction

• Excessive refrigerant charge

21 – Low Pressure Control Open The ICC detects the LPC is open. N

ote: The low pressure control is ignored for the first 90 seconds of compressor operation

• Unit has low refrigerant charge

•

Indoor coil is frozen (cooling mode)

• Dirty indoor coil or filter (cooling mode)

• Indoor blower is not running (cooling mode)

• Outdoor coil is frozen (heating mode)

• Outdoor fan is not running (heating mode)

• Expansion valve is not operating correctly

FLASHING

L21 – Active Protection

Low Pressure

ontrol Trip

he ICC has locked out the compressor due to

hree (3) consecutive LPC trips on the same

command for unit operation

7 – Low Line Voltage or No Line Voltage

Fault

• Check incoming line voltage to the disconnect and unit

• Check wiring connections

28 – High Line Voltage Fault

• Check line voltage

29 – High Pressure Control Open The ICC detects the HPC is open

•

Outdoor coil is dirty (cooling mode)

•

Outdoor fan is not running (cooling mode)

• Dirty indoor coil or filter (heating mode)

• Indoor blower is not running (heating mode)

L29 – Active Protection High Pressure Control Trip

LPC has opened 3 times in the same cooling operation, the ICC has locked out the compressor to protect it. ICC alternately flashes L and 29

21 – Low Pressure Control Open The ICC detects the LPC is open. N

ote: The low pressure control is ignored for the first 90 seconds of compressor operation

• Unit has low refrigerant charge

•

Indoor coil is frozen (cooling mode)

• Dirty indoor coil or filter (cooling mode)

• Indoor blower is not running (cooling mode)

• Outdoor coil is frozen (heating mode)

• Outdoor fan is not running (heating mode)

• Expansion valve is not operating correctly

FLASHING

L21 – Active Protection

Low Pressure

ontrol Trip

The ICC has locked out the compressor due to t

hree (3) consecutive LPC trips on the same

command for unit operation

7 – Low Line Voltage or No Line Voltage

Fault

• Check incoming line voltage to the disconnect and unit

• Check wiring connections

28 – High Line Voltage Fault

• Check line voltage

9 – High Pressure Control Open

The ICC detects the HPC is open

•

Outdoor coil is dirty (cooling mode)

•

Outdoor fan is not running (cooling mode)

• Dirty indoor coil or filter (heating mode)

• Indoor blower is not running (heating mode)

•

Liquid line restriction

• Excessive refrigerant charge

FLASHING

L29 – Active Protection High Pressure Control Trip

The ICC has locked out the compressor due to three (3) consecutive HPC trips on the same command for unit operation

80 – Low Air Flow The ICC detects that the indoor unit is not providing the minimum airflow requirements.

• Misapplied/wrong indoor air mover – replace with properly sized unit.

21 – Low Pressure Control Open The ICC detects the LPC is open. Note: The low pressure control is ignored for the first 90 seconds of compressor operation

• Unit has low refrigerant charge

• Indoor coil is frozen (cooling mode)

•

Dirty indoor coil or filter (cooling mode)

•

Indoor blower is not running (cooling mode)

•

Outdoor coil is frozen (heating mode)

•

Outdoor fan is not running (heating mode)

•

Expansion valve is not operating correctly

21 – Active Protection

Low Pressure

Control Trip

The ICC has locked out the compressor due to three (3) consecutive LPC trips on the same command for unit operation

27 – Low Line Voltage or No Line Voltage Fault

• Check incoming line voltage to the disconnect a

nd unit

• Check wiring connections

8 – High Line Voltage Fault

• Check line voltage

29 – High Pressure Control Open The ICC detects the HPC is open

• Outdoor coil is dirty (cooling mode)

• Outdoor fan is not running (cooling mode)

• Dirty indoor coil or filter (heating mode)

• Indoor blower is not running (heating mode)

• Liquid line restriction

• Excessive refrigerant charge

L29 – Active Protection High Pressure Control Trip

The ICC has locked out the compressor due to three (3) consecutive HPC trips on the same command for unit operation

30 – Fuse Open The ICC detects the on-board fuse is open

• The 3-amp fuse on the ICC is open.

• Low voltage wiring at R and C is damaged or

miswired.

21 – Low Pressure Control Open The ICC detects the LPC is open. Note: The low pressure control is ignored for the first 90 seconds of compressor operation

• Unit has low refrigerant charge

• Indoor coil is frozen (cooling mode)

• Dirty indoor coil or filter (cooling mode)

• Indoor blower is not running (cooling mode)

• Outdoor coil is frozen (heating mode)

• Outdoor fan is not running (heating mode)

• Expansion valve is not operating correctly

L21 – Active Protection

Low Pressure

Control Trip

The ICC has locked out the compressor due to three (3) consecutive LPC trips on the same command for unit operation

27 – Low Line Voltage or No Line Voltage Fault

• Check incoming line voltage to the disconnect and unit

• Check wiring connections

28 – High Line Voltage Fault

• Check line voltage

83 – Condenser Coil Temperature Fault The sensor detects an abnormally low or high coil temperature

• Replace the sensor

• Check sensor is installed correctly on control

21 – Low Pressure Control Open The ICC detects the LPC is open. N

ote: The low pressure control is ignored for the first 90 seconds of compressor o

peration

•

Unit has low refrigerant charge

•

Indoor coil is frozen (cooling mode)

•

Dirty indoor coil or filter (cooling mode)

• Indoor blower is not running (cooling mode)

• Outdoor coil is frozen (heating mode)

• Outdoor fan is not running (heating mode)

• Expansion valve is not operating correctly

FLASHING

21 – Active Protection

Low Pressure

ontrol Trip

he ICC has locked out the compressor due to

hree (3) consecutive LPC trips on the same

command for unit operation

27 – Low Line Voltage or No Line Voltage F

ault

• Check incoming line voltage to the disconnect and unit

• Check wiring connections

28 – High Line Voltage Fault

• Check line voltage

9 – High Pressure Control Open

The ICC detects the HPC is open

•

Outdoor coil is dirty (cooling mode)

• Outdoor fan is not running (cooling mode)

• Dirty indoor coil or filter (heating mode)

• Indoor blower is not running (heating mode)

• Liquid line restriction

• Excessive refrigerant charge

FLASHING

L29 – Active Protection High Pressure Control Trip

The ICC has locked out the compressor due to three (3) consecutive HPC trips on the same command for unit operation

30 – Fuse Open The ICC detects the on-board fuse is open

• The 3-amp fuse on the ICC is open.

• Low voltage wiring at R and C is damaged or

miswired.

83 – Condenser Coil Temperature Fault The sensor detects an abnormally low or high coil temperature

• Replace the sensor

84 – Outdoor Ambient Temperature Fault The sensor detects an abnormally low or high outdoor ambient temperature

• Check unit placement – If the outdoor unit is in a high temperature area, wait until the ambient temperature drops and check sensor reading.

• Replace the sensor.

• Check sensor is installed correctly on control

21 – Low Pressure Control Open The ICC detects the LPC is open. N

ote: The low pressure control is ignored for the first 90 seconds of compressor operation

•

Unit has low refrigerant charge

•

Indoor coil is frozen (cooling mode)

• Dirty indoor coil or filter (cooling mode)

• Indoor blower is not running (cooling mode)

• Outdoor coil is frozen (heating mode)

• Outdoor fan is not running (heating mode)

• Expansion valve is not operating correctly

FLASHING

L21 – Active Protection

Low Pressure

ontrol Trip

The ICC has locked out the compressor due to t

hree (3) consecutive LPC trips on the same

command for unit operation

7 – Low Line Voltage or No Line Voltage

Fault

• Check incoming line voltage to the disconnect and unit

• Check wiring connections

28 – High Line Voltage Fault

• Check line voltage

9 – High Pressure Control Open

The ICC detects the HPC is open

•

Outdoor coil is dirty (cooling mode)

• Outdoor fan is not running (cooling mode)

• Dirty indoor coil or filter (heating mode)

• Indoor blower is not running (heating mode)

• Liquid line restriction

• Excessive refrigerant charge

FLASHING

L29 – Active Protection High Pressure Control Trip

The ICC has locked out the compressor due to three (3) consecutive HPC trips on the same command for unit operation

30 – Fuse Open The ICC detects the on-board fuse is open

• The 3-amp fuse on the ICC is open.

• Low voltage wiring at R and C is damaged or

miswired.

83 – Condenser Coil Temperature Fault The sensor detects an abnormally low or high coil temperature

• Replace the sensor

84 – Outdoor Ambient Temperature Fault The sensor detects an abnormally low or high outdoor ambient temperature

• Check unit placement – If the outdoor unit is in a high temperature area, wait until the ambient temperature drops and check sensor reading.

93 – Internal Control Fault The control is not functioning properly.

• Check control for proper system operation.

• Replace control

21 – Low Pressure Control Open The ICC detects the LPC is open. Note: The low pressure control is ignored for the first 90 seconds of compressor o

peration

•

Unit has low refrigerant charge

•

Indoor coil is frozen (cooling mode)

•

Dirty indoor coil or filter (cooling mode)

• Indoor blower is not running (cooling mode)

• Outdoor coil is frozen (heating mode)

• Outdoor fan is not running (heating mode)

• Expansion valve is not operating correctly

FLASHING

21 – Active Protection

Low Pressure

ontrol Trip

The ICC has locked out the compressor due to t

hree (3) consecutive LPC trips on the same

command for unit operation

27 – Low Line Voltage or No Line Voltage F

ault

•

Check incoming line voltage to the disconnect

and unit

• Check wiring connections

28 – High Line Voltage Fault

• Check line voltage

29 – High Pressure Control Open The ICC detects the HPC is open

• Outdoor coil is dirty (cooling mode)

• Outdoor fan is not running (cooling mode)

• Dirty indoor coil or filter (heating mode)

• Indoor blower is not running (heating mode)

• Liquid line restriction

• Excessive refrigerant charge

FLASHING

L29 – Active Protection High Pressure Control Trip

The ICC has locked out the compressor due to three (3) consecutive HPC trips on the same command for unit operation

30 – Fuse Open The ICC detects the on-board fuse is open

• The 3-amp fuse on the ICC is open.

• Low voltage wiring at R and C is damaged or

miswired.

83 – Condenser Coil Temperature Fault The sensor detects an abnormally low or high coil temperature

• Replace the sensor

84 – Outdoor Ambient Temperature Fault The sensor detects an abnormally low or high outdoor ambient temperature

• Check unit placement – If the outdoor unit is in a high temperature area, wait until the ambient temperature drops and check sensor reading.

• Replace the sensor.

90 – Communication Fault The ICC detects and internal fault condition

• Replace the ICC.

21 – Low Pressure Control Open The ICC detects the LPC is open. N

ote: The low pressure control is ignored for the first 90 seconds of compressor operation

• Unit has low refrigerant charge

•

Indoor coil is frozen (cooling mode)

• Dirty indoor coil or filter (cooling mode)

• Indoor blower is not running (cooling mode)

• Outdoor coil is frozen (heating mode)

• Outdoor fan is not running (heating mode)

• Expansion valve is not operating correctly

FLASHING

L21 – Active Protection

Low Pressure

ontrol Trip

The ICC has locked out the compressor due to t

hree (3) consecutive LPC trips on the same

command for unit operation

27 – Low Line Voltage or No Line Voltage Fault

• Check incoming line voltage to the disconnect and unit

• Check wiring connections

28 – High Line Voltage Fault

• Check line voltage

29 – High Pressure Control Open The ICC detects the HPC is open

• Outdoor coil is dirty (cooling mode)

• Outdoor fan is not running (cooling mode)

• Dirty indoor coil or filter (heating mode)

• Indoor blower is not running (heating mode)

• Liquid line restriction

• Excessive refrigerant charge

FLASHING

L29 – Active Protection High Pressure Control Trip

The ICC has locked out the compressor due to three (3) consecutive HPC trips on the same command for unit operation

30 – Fuse Open The ICC detects the on-board fuse is open

• The 3-amp fuse on the ICC is open.

• Low voltage wiring at R and C is damaged or

miswired.

30 – Fuse Open The ICC detects the on-board fuse is open

• The 3-amp fuse on the ICC is open.

• Low voltage wiring at R and C is damaged or miswired.

1 – Low Pressure Control Open The ICC detects the LPC is open. N

ote: The low pressure control is ignored for the first 90 seconds of compressor operation

• Unit has low refrigerant charge

•

Indoor coil is frozen (cooling mode)

• Dirty indoor coil or filter (cooling mode)

• Indoor blower is not running (cooling mode)

• Outdoor coil is frozen (heating mode)

• Outdoor fan is not running (heating mode)

• Expansion valve is not operating correctly

FLASHING

L21 – Active Protection

Low Pressure

Control Trip

he ICC has locked out the compressor due to three (3) consecutive LPC trips on the same command for unit operation

7 – Low Line Voltage or No Line Voltage

Fault

• Check incoming line voltage to the disconnect

and unit

• Check wiring connections

28 – High Line Voltage Fault

•

Check line voltage

29 – High Pressure Control Open The ICC detects the HPC is open

• Outdoor coil is dirty (cooling mode)

•

Outdoor fan is not running (cooling mode)

• Dirty indoor coil or filter (heating mode)

• Indoor blower is not running (heating mode)

•

Liquid line restriction

• Excessive refrigerant charge

FLASHING

L29 – Active Protection High Pressure Control Trip

The ICC has locked out the compressor due to three (3) consecutive HPC trips on the same command for unit operation

30 – Fuse Open The ICC detects the on-board fuse is open

• The 3-amp fuse on the ICC is open.

• Low voltage wiring at R and C is damaged or

miswired.

d1 – No Shared Data • Replace memory card with correct system

information.

d1 – No Shared Data

ELECTRONICS GROUP TO

DESCRIBE

d3 – Airflow CFM Mismatch The indoor air mover (air handler/furnace) cannot supply the required airflow for proper system operation

• Misapplied/wrong indoor air mover – replace with properly sized air handler/furnace.

d1 – No Shared Data

ELECTRONICS GROUP TO

DESCRIBE

d3 – Airflow CFM Mismatch The indoor air mover (air handler/furnace) cannot supply the required airflow for

• Misapplied/wrong indoor air mover – replace with properly sized air handler/furnace.

d4 – (Device) Memory Card Invalid for Device The data in the memory card inserted into the control board does not match the data in the control.

• Check memory card to ensure it matches device

• Check if memory card is present

d1 – No Shared Data

ELECTRONICS GROUP TO

DESCRIBE

d3 – Airflow CFM Mismatch The indoor air mover (air handler/furnace) cannot supply the required airflow for proper system operation

• Misapplied/wrong indoor air mover – replace with properly sized air handler/furnace.

P – Protector Trip A command for compressor operation is present but no current is measured to the compressor

• Motor protector open

• Line voltage disconnected

01 – Long Run Time (Compressor) The compressor has continuously run for more than 18 hours in the cooling mode.

• Low refrigerant charge

• Air ducts have substantial leakage

• Dirty indoor air filter

• Dirty outdoor coil

02 – High Pressure Control Open The ICC detects the HPC is open.

Reference ICC codes:

• 21

• L21

• 29

• L29

03 – Short Cycling The ICC detects the run time for the past four (4) compressor cycles is less than three (3) minutes each.

• Check thermostat wire connections (R, C, 1, &

• Check thermostat location in zone (too close to discharge grill)

L4 – Locked Rotor The ICC detects four (4) consecutive protector trips have occurred and the average run time for each trip is less than 15

• Bad run capacitor

• Low line voltage

• Excessive refrigerant in compressor

• Seized bearings in compressor

d1 – No Shared Data

ELECTRONICS GROUP TO

DESCRIBE

d3 – Airflow CFM Mismatch The indoor air mover (air handler/furnace) cannot supply the required airflow for

• Misapplied/wrong indoor air mover – replace with properly sized air handler/furnace.

d8 – Old Shared Data System data is obsolete

• If system will not operate, order new memory card to update system information.

21 – Low Pressure Control Open The ICC detects the LPC is open. Note: The low pressure control is ignored for the first 90 seconds of compressor operation

• Unit has low refrigerant charge

• Indoor coil is frozen (cooling mode)

• Dirty indoor coil or filter (cooling mode)

• Indoor blower is not running (cooling mode)

• Outdoor coil is frozen (heating mode)

• Outdoor fan is not running (heating mode)

• Expansion valve is not operating correctly

L21 – Active Protection

Low Pressure

Control Trip

The ICC has locked out the compressor due to three (3) consecutive LPC trips on the same command for unit operation

27 – Low Line Voltage or No Line Voltage Fault

• Check incoming line voltage to the disconnect and unit

• Check wiring connections

28 – High Line Voltage Fault

• Check line voltage

d1 – No Shared Data

ELECTRONICS GROUP TO

DESCRIBE

d3 – Airflow CFM Mismatch The indoor air mover (air handler/furnace) cannot supply the required airflow for

• Misapplied/wrong indoor air mover – replace with properly sized air handler/furnace.

Page 28

CONVENTIONAL THERMOSTAT WIRING

12.8 Conventional 24VAC Thermostat Control Wiring

The (-)ASL series of heat pumps allow the installer to use conventional 24VAC control wiring and a conventional thermostat for proper unit operation.

IIMMPPOORRTTAANNTT::

The preferred method of unit installation and operation is by serial

communications. Serial communications allow access to the fault history of the system. This diagnostic information is not available when the (-)ASL unit is using a conventional thermostat. Reference section 12.2 Comfort Control

Control Wiring.

hermostat control wiring requires a minimum of four (4) wires for proper unit oper-

ation:

R – 24VAC C

– 24VAC common Y1 – First stage operation Y2 – Second stage operation

Optional wiring:

L – ICC fault information

A thermostat and a 24-volt, 40VA minimum transformer are required for the control circuit of the condensing unit. The furnace or the air handler transformer may be used if sufficient. See the wiring diagram for reference. Use Table 6 to size the 24volt control wirings.

L Terminal Output

• Flash 1 – Compressor running extremely long run cycle or low pressure

• Flash 2 – High pressure control trip

• Flash 3 – Unit short cycling

• Flash 4 – Locked rotor

• Flash 5 – Compressor will not run, open circuit

• Flash 6 – Open start circuit

• Flash 7 – Open run circuit

• Flash 8 – Control mis-operation

• Flash 9 – Low control voltage

SOLID COPPER WIRE - AWG.

3.0 16 14 12 10 10 10

2.5 16 14 12 12 10 10

2.0 18 16 14 12 12 10

50 100 150 200 250 300

Length of Run - Feet (1)

Thermostat Load - Amps

(1) Wire length equals twice the run distance.

NOTE: Do not use control wiring smaller than No. 18 AWG between thermostat and outdoor unit.

TABLE 6

FIELD WIRE SIZE FOR 24 VOLT THERMOSTAT CIRCUITS

Page 29

(-)HPN Air

Handler

Typical Two-Stage Thermostat

(-)ASL

Condensing

Unit

ield Installed

Line Voltage

WIRING INFORMATION

actory Standard

ODD

/BL

W/R

FIGURE 8

TYPICAL 2-STAGE THERMOSTAT: CONDENSING UNIT WITH ELECTRIC HEAT

FIGURE 9

TYPICAL TWO-STAGE THERMOSTAT: CONDENSING UNIT WITH ELECTRIC HEAT USING A HUMIDISTAT FOR DEHUMIDIFICATION*.

(-)HPN Air

Handler

Typical Two-Stage Thermostat

(-)ASL

ondensing

Unit

ield Installed

ine Voltage

WIRING INFORMATION

actory Standard

ODD

Y/BL

W/R

Humidistat

FIGURE 10

TYPICAL TWO-STAGE THERMOSTAT: CONDENSING UNIT WITH ELECTRIC HEAT USING A TWO-STAGE THERMOSTAT WITH DEHUMIDIFICATION*

(-)HPN Air

Handler

Typical Two-Stage Thermostat

(-)ASL

Condensing

Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

ODD

Y/BL

W/R

DHM

(-)HPN Air

Handler

Typical Two-Stage Thermostat

(-)ASL

Condensing

Unit

Field Installed

Line Voltage

WIRING INFORMATION

Factory Standard

ODD

/BL

DHM

FIGURE 11

CONDENSING UNIT WITH ELECTRIC HEAT USING A TWO-STAGE THERMOSTAT WITH DEHUMIDIFICATION* AND A MALFUNCTION LIGHT

12.9 Typical Non-Communicating Thermostat Wiring Diagrams

WIRE COLOR CODE

K – BLACK G – GREEN PR – PURPLE Y – YELLOW

R – BROWN GY – GRAY R – RED

L – BLUE O – ORANGE W – WHITE

*See Section 5.11 for proper DIP switch selection.

The following figures show the typical wiring diagrams with (-)HPN air handler and (-)ARL condensing unit. Cooling and heat pump airflows may need to be adjusted for homeowner comfort once the system is operational.

CONVENTIONAL THERMOSTAT WIRING

Page 30

12.10 Diagnostic Codes in Dual Drive Condensing Units With

12.10 Conventional Thermostat Wiring

Each Comfort Control2System™ Control Board maintains separate fault history for the compressor it controls. Fault codes are accessible by two methods:

1. Using a service tool plugged directly into the compressor Comfort Control

board.

. Reading the codes directory off the dual 7-segment LEDs on the Comfort

ontrol

oard.

12.11 ICC Control Operation with Conventional Thermostat Wiring

IInnss ttaallllaattiioonn VVeerriiffii ccaattiioonn

• 24V AC power on R&C must be present at the ICC for it to operate

• Line voltage must be present at the ICC for the compressor and the outdoor fan to operate

• The ICC displays a “0” for standby mode. Standby mode indicates line voltage and 24VAC are present at the ICC and there is not a call for unit operation from the thermostat.

Zero (0) displayed

The unit is in standby

CCaallll ffoo rr CCoommpprreess ssoorr OOppeerraattiioonn ((YY11 LLEEDD))

• If a call for compressor operation is received by the ICC (first stage/second stage cooling or first stage/second stage heating), the red Y1 LED will illuminate.

• The ICC has an on/off fan delay of one (1) second for each stage of heating or cooling.

• The ICC ignores the lower pressure control for the first 90 seconds of compressor operation.

• On heat pumps, the ICC ignores the LPC during the defrost cycle.

• The dual 7-segment LED displays five (5) operational status codes:

11)) FFiirrsstt SSttaaggee CCooooll iinngg OOppeerr aattiioonn

– When the ICC receives a call for first stage

cooling operation, a lower case “c” is displayed on the dual 7-segment LEDs.

Lower case “c” indicates first stage cooling operation

22)) SSeeccoonndd SSttaaggee CCooooll iinngg OOppeerraattiioonn

– When the ICC receives a call for second stage cooling operation, an upper case “C” is displayed on the dual 7-segment LEDs.

Upper case “C” indicates second stage cooling operation

33--mmii nnuuttee AAnnttii--sshhoo rrtt CCyyccllee TTiimmeerr

Flashing lower case c A call for first stage cooling has been received

– 24VAC common

2 – Second stage operation

SECTION 13.4 HERE!!!!

CONVENTIONAL THERMOSTAT WIRING

Page 31

Flashing upper case C A call for second stage cooling has be received

• The 3-minute time delay can be bypassed when a call for compressor operation is present by pressing the TEST button for 1 second and releasing. The compressor will begin operation and the dual 7-segment will stop flashing.

3300 SSeeccoonndd MMiinniimmuumm RRuunn TTii mmeerr

• The ICC has a built in 30 second minimum unit run time. If a call for compressor operation is received by the ICC and the call is removed, the compressor will continue to operate for 30 seconds. The dual 7-segment LEDs will flash “c” or “C” while the minimum run timer is active.

11 SSeeccoonndd CCoommpprreess ssoorr//FFaann DDeellaayy

• The ICC starts/stops the outdoor fan one (1) second after the start/stop of the compressor upon a call for compressor operation to minimize current inrush and/or voltage drop.

12.12 Active Compressor Protection Mode

• The ICC actively protects the compressor from harmful operation during a fault condition.

• When the ICC detects a condition that could damage the compressor, the ICC will enter active protection mode and lockout compressor operation

• The condition causing active protection must be resolved then the ICC can be reset to restart the system.

• There are five (5) active protection modes:

11)) LLooww PPrreessss uurree CCoonnttrrooll LLoocckkoo uutt

• The ICC will display a flashing “L” followed by a flashing 21 when a low pressure control lockout occurs.

• The ICC addresses low pressure control faults differently depending on the mode of unit operation (cooling or heating mode).

Active Protection – Code L21 – Open low pressure control

CCoooolliinngg MMooddee

• If the LPC opens three (3) times during the same call for cooling operation, the ICC will lockout the compressor to keep it from continuing to operate and flash a L” on the dual 7-segment LEDs followed by a “21”.

IIMMPPOORRTTAANNTT::

This mode of active protection must be manually reset.

CONVENTIONAL THERMOSTAT WIRING

“

h2” indicates second stage heating operation

Lower case “d” indicates defrost operation (in heating mode)

Page 32

22)) HHiigg hh PPrreessssuurree CCoonn ttrrooll LLoo cckkoouutt

• If the HPC opens three (3) times during the same call for unit operation, the ICC will lockout the compressor to keep it from continuing to operate and flash a L” on t

he dual 7-segment LEDs followed by a “29”.

Active Protection – Code L29 – Open high pressure control

IIMMPPOORRTTAANNTT::

This mode of active protection must be manually reset.

33)) LLoocckkeedd RRoottoo rr

• The ICC will display a flashing “L” followed by a flashing “04” when a locked rotor condition occurs.

Active Protection – Code L4 – Locked rotor

If the ICC detects the compressor has run less than 15 seconds for four (4) consecutive starts during the same call for unit operation, the ICC will lockout the compressor to keep it from continuing to operate and flash a “L” on the dual 7segment LEDs followed by a “04”.

IIMMPPOORRTTAANNTT::

This mode of active protection must be manually reset.

44)) OOppeenn SSttaarrtt CCiirrccuuiitt LL oocckkoouutt

• The ICC will display a flashing “L” followed by a flashing “06” when an open start circuit condition occurs.

Active Protection – Code L6 – Compressor open start circuit

IIMMPPOORRTTAANNTT::

This mode of active protection must be manually reset.

55)) OOppeenn RRuunn CCiirrccuuiitt LLoocckkoouutt

• The ICC will display a flashing “L” followed by a flashing “07” when an open start circuit condition occurs.

Active Protection – Code L7 – Compressor open run circuit

IIMMPPOORRTTAANNTT::

This mode of active protection must be manually reset.

CONVENTIONAL THERMOSTAT WIRING

Page 33

EExxiittiinngg AAcc ttiivvee CCoo mmpprreessssoorr PPrrootteeccttii oonn LLoocc kkoouu tt

Three are three methods to reset the ICC after an active protection lockout:

1) Cycle the line voltage to the unit

2) Cycle 24VAC to the ICC (remove the R or C connection to the ICC)

3) Push the TEST button down for one (1) second and release Note: The ICC will attempt to start the unit when the TEST button is pressed and

released

NNoottee::

The preferred method of resetting the ICC is to push the TEST button down

for one (1) second.

12.13 Test and Fault Recall Modes

TTeesstt MMoodd ee ((TTeesstt BBuuttttoonn oonn tthhee IICCCC))

• Enter TEST mode by pressing the TEST button with an insulated probe for one (1) second and release.

• The TEST mode causes the ICC to do the following

1) Resets the ICC from any active protection lockout mode

2) Resets the 3-minute anti-short cycle timer

3) Energizes the unit without a call for unit operation

• If the 3-minute anti-short cycle timer or 30 second minimum run timer is active (a flashing “c” or “C” is displayed on the dual 7-segment LEDs) and a call for unit operation is present, TEST mode causes:

1) A “t” to display momentarily on the dual 7-segment display

Lower case “t”

2) The compressor will start

3) The display will change to a steady “c” or “C” to show the current call for unit

operation.

Note: If a call for unit operation is present at the end of TEST mode will cause the unit to continue to operate.

• If no call for unit operation is present, TEST mode causes

1) A steady “t” appears on the dual 7-segment LEDs

2) The compressor will start

3) The compressor will turn off after 5-seconds.

Note: Entering TEST mode without a call for unit operation will cause the compressor to run 5-seconds.

FFaauulltt RReeccaallll MMooddee ((TTEESSTT aanndd SSWW22 BBuuttttoonnss))

• Enter

FFAAUULL TT RREECCAALLLL

mode by pressing the

TTEESSTT

and

SSWW22

buttons at the

same time with insulated probes for one (1) second and release.

• When entering and exiting FAULT RECALL mode the top and bottom segments of the dual 7-segment LEDs will illuminate.

Fault Recall Mode – the top and bottom segments on the right-hand are illuminated

• When entering

FFAAUULLTT RREECCAALLLL

mode, the ICC will automatically scroll through

stored faults on the dual 7-segment LEDs.

• Each fault is displayed one time with the top right-hand segment of the dual 7segment display activated between faults.

• Each fault is displayed with the most recent fault displayed first.

• A maximum of six individual faults can be stored

• A maximum of three consecutive identical faults are stored.

with insulated probes for one (1) second and release.

segment LEDs will illuminate.

Fault Recall Mode – the top and bottom segments illuminated

CONVENTIONAL THERMOSTAT WIRING

Page 34

• A “0” will be displayed with no faults are stored

• The ICC will automatically exit the

FFAAUULLTT RREECCAALLL

mode after displaying stored

faults

IIMMPPOORRTTAANNTT::

The ICC stores the previous two weeks of history faults. The com-

plete stored fault history cannot be displayed using a conventional thermostat. CClleeaarr FFaauulltt HHiiss ttoorryy ((TTEESSTT aanndd SSWW22 BBuuttttoonnss))

• Clear FAULT HISTORY by pressing both TEST and SW2 button for five (5) seconds with insulated probes and release.

• The top and bottom segments of the dual 7-segment LEDs flash to indicate the h

istory has been cleared.

Fault history is cleared with the top and bottom LED s

egments flash

13.0 ELECTRICAL WIRING

Field wiring must comply with the National Electric Code (C.E.C. in Canada) and any applicable local code.

13.1 Power Wiring

It is important that proper electrical power from a commercial utility is available at the condensing unit contactor. Voltage ranges for operation are shown in Table 7.

Install a branch circuit disconnect within sight of the unit and of adequate size to handle the starting current (see Table 1).

Power wiring must be run in a rain-tight conduit. Conduit must be run through the connector panel below the access cover (see Figure 1) and attached to the bottom of the control box.

Connect power wiring to line voltage lug located in outdoor condensing unit electrical box. (See wiring diagram attached to unit access panel.)

Check all electrical connections, including factory wiring within the unit and make sure all connections are tight.

DO NOT connect aluminum field wire to the contactor terminals.

13.2 Grounding

A grounding lug is provided near the contactor for a ground wire.

13.3 Control Wiring

TABLE 7

VOLTAGE RANGES (60 HZ)

Operating Voltage Range

Model Number Nameplate Voltage (VAC)

024/036 197 - 253

039/048/060

208/230 (1 Phase)

188 - 253

WARNING

THE UNIT MUST BE PERMANENTLY GROUNDED. FAILURE TO DO SO CAN CAUSE ELECTRICAL SHOCK RESULTING IN SEVERE PERSONAL INJURY OR DEATH.

with insulated probes for one (1) second and release.

segment LEDs will illuminate.

Fault Recall Mode – the top and bottom segments illuminated

CONVENTIONAL THERMOSTAT WIRING

Page 35

A thermostat and a 24 volt, 40 VA minimum transformer are required for the control circuit of the condensing unit. The furnace or the air handler transformer may be used if sufficient. See the wiring diagram for reference. Use Table 6 to size the 24 volt control wiring.

14.0 START-UP AND PERFORMANCE

Even though the unit is factory charged with Refrigerant-410A, the charge must be c

hecked to the charge table attached to the service panel and adjusted, if required.

Allow a minimum of 5 minutes of run time before analyzing charge.

At initial start-up or after extended shutdown periods, make sure the heater is energized for at least 12 hours before the compressor is started. (Disconnect switch on and wall thermostat off.) Connect the communicating system per Figure 5. Once all devices are connected, power up the line and low voltage to the system. When all devices are powered, the thermostat should detect the indoor and outdoor units within 45 seconds.

15.0 CHECKING AIRFLOW

The air distribution system has the greatest effect on airflow. The duct system is totally controlled by the contractor. For this reason, the contractor should use only industry-recognized procedures.

The correct air quantity is critical to air conditioning systems. Proper operation, efficiency, compressor life, and humidity control depend on the correct balance between indoor load and outdoor unit capacity. Excessive indoor airflow increases the possibility of high humidity problems. Low indoor airflow reduces total capacity, and causes coil icing. Serious harm can be done to the compressor by low airflow, such as that caused by refrigerant flooding.

Heat pump systems require a specified airflow. Each ton of cooling requires between 340 and 450 cubic feet of air per minute (CFM).

Duct design and construction should be carefully done. System performance can be lowered dramatically through bad planning or workmanship.

Air supply diffusers must be selected and located carefully. They must be sized and positioned to deliver treated air along the perimeter of the space. If they are too small for their intended airflow, they become noisy. If they are not located properly, they cause drafts. Return air grilles must be properly sized to carry air back to the blower. If they are too small, they also cause noise.

The installers should balance the air distribution system to ensure proper quiet airlow to all rooms in the home. This ensures a comfortable living space.

These simple mathematical formulas can be used to determine the CFM in a residential or light commercial system.

Electric resistance heaters can use

CFM =

volts x amps x 3.414

1.08 x temp rise

Gas furnaces can use

CFM =

BTUH

∆T x 1.08

An air velocity meter or airflow hood can give a more accurate reading of the system CFM’s.

16.0 CHECKING REFRIGERANT CHARGE

Charge for all systems should be checked against the Charging Chart inside the access panel cover. Before using the chart, the indoor conditions must be within 2°F of desired comfort conditions and system must be run until operating conditions stabilize (15 min. to 30 min.)

Page 36

IMPORTANT: Use industry-approved charging methods to ensure proper system charge.

16.1 Charging Units With R-410A Refrigerant

Charge for all systems should be checked against the Charging Chart inside the access panel cover.

IMPORTANT: Do not operate the compressor without charge in system.

ddition of R-410A will raise pressures (vapor, liquid and discharge).

If adding R-410A raises both vapor pressure and temperature, the unit is overcharged.

IMPORTANT: Use industry-approved charging methods to ensure proper system charge.

16.2 Charging By Liquid Pressure

Liquid pressure method is used for charging systems in the cooling and heating mode. The service port on the liquid service valve (small valve) and suction (large valve) is used for this purpose.

Verify that the outdoor unit is running and the indoor air mover is delivering the maximum airflow for this system size. Read and record the outdoor ambient temperature. Read and record the liquid and suction pressures at the ports on the liquid and suction valves. If refrigerant lines are sized using the nameplate charge, the correct liquid pressure is found at the intersection of the suction pressure and the outdoor ambient.

1. Remove refrigerant charge if the liquid pressure is above the chart value.

2. Add refrigerant charge if the liquid pressure is below the chart value.

16.3 Charging By Weight

For a new installation, evacuation of interconnecting tubing and indoor coil is adequate; otherwise, evacuate the entire system. Use the factory charge shown in Table 1 of these instructions or unit data plate. Note that charge value includes charge required for 15 ft. of standard size interconnecting liquid line. Calculate actual charge required with installed liquid line size and length using:

1/4” O.D. = .3 oz./ft. 5/16” O.D. = .4 oz./ft. 3/8” O.D. = .6 oz./ft. 1/2” O.D. = 1.2 oz./ft.

With an accurate scale (+/– 1 oz.) or volumetric charging device, adjust charge difference between that shown on the unit data plate and that calculated for the new system installation. If the entire system has been evacuated, add the total calculated charge.

16.4 Final Leak Testing

After the unit has been properly evacuated and charged, a halogen leak detector should be used to detect leaks in the system. All piping within the condensing unit, evaporator, and interconnecting tubing should be checked for leaks. If a leak is detected, the refrigerant should be recovered before repairing the leak. The Clean Air Act prohibits releasing refrigerant into the atmosphere.

CAUTION

R-410A PRESSURES ARE APPROXIMATELY 60% HIGHER THAN R-22 PRESSURES. USE APPROPRIATE CARE WHEN USING THIS REFRIGERANT. FAILURE TO EXERCISE CARE MAY RESULT IN EQUIPMENT DAMAGE, OR PERSONAL INJURY.

WARNING

TURN OFF ELECTRIC POWER AT THE FUSE BO X O R S ERV ICE PA NE L BEFORE MAKI NG ANY ELECTRICAL CONNECTIONS.

ALSO, THE GROUND CONNECTIO N MUS T BE COMPL ETE D BEFORE MAKING LINE VOLTAGE CONNECTIONS. FAILURE TO DO SO CAN RESULT IN ELECTRICAL SHO CK, SEV ERE PER SON AL INJURY OR DEATH.

CAUTION

THE TOP OF THE SCROLL COMPRESSOR SHELL IS HOT. TOUCHING THE COMPRESSOR TOP MAY RESULT IN SERIOUS PERSONAL INJURY.

Page 37

17.0 ACCESSORIES

17.1 Remote Outdoor Temperature Kit (Part No. 47-102709-03)

his is a kit that has a longer remote sensor that can be installed away from the out-

door unit for better thermostat temperature display.

18.0 TROUBLESHOOTING

MPORTANT: The JEC series units with the ICC (Integrated Compressor Control)

provide status and diagnostic information that greatly enhances the ability to quickly diagnose system faults. Use the following troubleshooting guides as another tool in system diagnostics.

NOTE: In diagnosing common faults in the cooling system, develop a logical thought pattern as used by experienced technicians. The charts which follow are not intended to be an answer to all problems but only to guide the technician’s trouble shooting. Through a series of yes and no answers, follow the logical path to a likely conclusion.

A novice technician should use these charts like a road map. Remember that the chart should clarify a logical path to the solution.

18.1 Comfort Control2System™ System Initial Startup

Connect the system. There are four wires that need to be connected to each unit. R 24 VAC C 24 VAC common 1 Communications 2 Communications

Air Handler Air Conditioner

Furnace Heat Pump Thermostat Indoor Outdoor R – – – – – – – – – – – – – – – – – – R – – – – – – – – – – – – – R 1 – – – – – – – – – – – – – – – – – – 1 – – – – – – – – – – – – – 1 2 – – – – – – – – – – – – – – – – – – 2 – – – – – – – – – – – – – 2 C – – – – – – – – – – – – – – – – – – C – – – – – – – – – – – – – C

These wires need to be connected to each device thermostat, indoor air handler and outdoor unit (heat pump or AC).

If the communications wires are wired backwards at any point the greem LED (D52) will always be on. If this happens check the wires at each point to ensure they are not reversed.

Once all devices are connected power up the line and low voltage to the system. When all devices are powered the thermostat should detect the indoor and outdoor units within 60 seconds. The air handler and outdoor units have a set of bias dipswitches set at a factory default to the ON position. These dipswitches are for future use DO NOT CHANGE DIP SWITCHES.

Once the system is powered the airflow settings will be configured for all devices. The outdoor unit will send information to configure indoor airflow. If the indoor unit is incapable of supplying the required airflow a d3 fault will be displayed on the thermostat and outdoor unit.

All devices have a LEARN button. This button is for future use and has no function at this time.

IMPORTANT: DO NOT USE A PHONE CORD TO CONNECT INDOOR AND OUTDOOR UNITS. THIS WILL DAMAGE THE CONTROLS.

IMPORTANT: DO NOT CONNECT THE SYSTEM TO A PHONE LINE. THIS WILL DAMAGE THE CONTROLS.

ADVANCED SETTINGS

All adjustments for airflow are made at the thermostat at this point. Items that can be changed are Airflow trim adjustment Dehumidification Setpoint and mode of operation. The thermostat also has a wide range of fault and history information. The following tables show all of the available options by unit type. To go down into a menu press Install Config to move back up press the Menu button. See the Installation Instructions.

Page 38

18.2 REPLACEMENT OF COMFORT CONTROL2SYSTEM™ CONTROL

18.2 BOARD

Each control board in the Comfort Control2System™ needs information specific to the unit the control is installed in. This information is called shared data because it is distributed (shared) on the HVAC network. The shared data for a unit contains information that allows the unit to operate correctly.

When a control board requires replacement, it is important that the replacement board gets the shared data from the old control. The primary way the replacement control gets this information is by the memory card that should be installed on the old control. Remove the memory card from the old control, but leave it attached to the unit by the plastic tether, replace the control and reinstall the memory card on the new control. If for some reason the memory card has been damaged or is missing, the shared data from the network (air handler) will be used by the control. The network shared data is considered a back up for a lost or missing memory card. Never remove the memory card from the unit or cut the tether of the memory card as it is the most effective way to transfer the shared data. If the memory card is damaged or missing a new memory card can be ordered from Pro Stock. The unit will operate without the memory card, but a D4 error will be displayed on the seven segment displays.

The memory card from a different unit should never be used.

FIGURE 12

Page 39

18.3 Electrical Checks Flow Chart

Yes

Outdoor Unit

Running?

7-Segment display lit?

Flashing Mode Character

Alternating “C” and “##” (Code)

SEE PANEL COVER OR