Goodman DSZC160241AA, DSZC160241AB, DSZC160241AC, DSZC160361AA, DSZC160361AB Installation Manual

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Page 1

CONDENSING UNIT

HEAT PUMP INSTALLATION & SERVICE REFERENCE

MPORTANT SAFETY INSTRUCTIONS

The following symbols and labels are used throughout this manual to indicate immediate or potential safety hazards. It is the owner’s and installer’s responsibility to read and comply with all safety information and instructions accompanying these symbols. Failure to heed safety information increases the risk of personal injury , property damage, and/or product damage.

HIPPING INSPECTION

HIGH VOLTAGE!

ISCONNECT

ULTIPLE POWER SOURCES MAY BE PRESENT

TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH

ALL

POWER BEFORE SERVICING

WARNING

. F

AILURE

Always keep the unit upright; laying the unit on its side or top may cause equipment damage. Shipping damage, and subsequent investigation is the responsibility of the carrier. V erify the model number, specifications, electrical characteristics, and accessories are correct prior to installation. The distributor or manufacturer will not accept claims from dealers for transportation damage or installation of incorrectly shipped units.

ODES

& R

EGULATIONS

ONLY

INDIVIDUALS MEETING THE REQUIREMEN TS OF AN

ECHNICIA N

ONDITIONING

USE THIS INFORMATION WITHOUT SUCH BACKGROUND MAY RESU LT IN PRODUCT DAMAGE PERSONAL INJURY, OR DEATH

”

AT A MINIMUM

, H

EATING AND REFRIGERATION INSTITU TE

WARNING

“E

NTRY LEVEL

AS SPECIFIED BY THE AIR

(AHRI)

. A

TTEMPTING TO INSTALL OR REPAIR THIS UNIT

MAY

This product is designed and manufactured to comply with national codes. Installation in accordance with such codes and/or prevailing local codes/regulations is the responsibility of the installer . The manufacturer assumes no responsibility for equipment installed in violation of any codes or regulations. Rated performance is achieved after 72 hours of operation. Rated performance is delivered at the specified airflow. See outdoor unit specification sheet for split system models or product specifi-

CROLL EQUIPPE D UNITS SHOULD NEVER BE USED TO EVACUATE THE AIR CONDITIONING SYSTEM ELECTRICAL ARCING RESU LTING IN A DAMAGED OR FAILED COMPRESSOR

CAUTION

. V

ACUUMS THIS LOW CAN CAUSE INTERNAL

cation sheet for packaged and light commercial models. Specification sheets can be found at www.goodmanmfg.com for Goodman® brand products or www.amana-hac.com for Amana® brand products. Within either website, please select the residential or commercial products menu and then select the submenu for the type of product to be installed, such as air conditioners or heat pumps, to access a list of product pages that each contain links to that model’s specification sheet.

The United States Environment al Protection Agency (EP A) has issued various regulations regarding the introduction and disposal of refrigerants. Failure to follow these regulations may harm the environment and can lead to the imposition of substantial fines. Should you have any questions please contact the local of fice of the EP A.

If replacing a condensing unit or air handler, the system must be manufacturer approved and Air Conditioning, Heating and Refrigeration Institute (AHRI) matched. NOTE: Installation of unmatched systems is strongly discouraged.

Outdoor units are approved for operation above 55°F in cooling mode. Operation below 55°F in cooling mode requires the use of an approved low ambient kit.

Operating the unit in a structure that is not complete (either as part of new construction or renovation) will void the warranty.

EA TURES

This heat pump is a part of the ComfortNet™ family of products. It may be installed as part of a “legacy” system using a standard 24 V AC thermostat. However , with the CTK0* ComfortNet™ thermostat kit, this heat pump may be installed as part of a digitally communicating system. The ComfortNet system provides automatic airflow configuration, enhanced setup features, and enhanced diagnostics. It also reduces the number of thermostat wires to a maximum of four and a minimum of two.

is a registered trademark of Maytag Corporation or its related companies and is used under

Page 2

NST ALLATION CLEARANCES

Special consideration must be given to location of the condensing unit(s) in regard to structures, obstructions, other units, and any/ all other factors that may interfere with air circulation. Where possible, the top of the unit should be completely unobstructed; however, if vertical conditions require placement beneath an obstruction there should be a minimum of 60 inches between the top of the unit and the obstruction(s). The specified dimensions meet requirements for air circulation only. Consult all appropriate regulatory codes prior to determining final clearances.

Another important consideration in selecting a location for the unit(s) is the angle to obstructions. Either side adjacent the valves can be placed toward the structure provided the side away from the structure maintains minimum service clearance. Corner installations are strongly discouraged.

This unit can be located at ground floor level or on flat roofs. At ground floor level, the unit must be on a solid, level foundation that will not shift or settle. To reduce the possibility of sound transmission, the foundation slab should not be in contact with or be an integral part of the building foundation. Ensure the foundation is sufficient to support the unit. A concrete slab raised above ground level provides a suitable base.

NOT

RECOMMENDED

B B B

AA AAA

Model Type A B C AA Residential

Light Commercial

Minimum Airflow Clearance

10" 10" 18" 20" 12" 12" 18" 24"

OK!

OOFTOP INST ALLATIONS

If it is necessary to install this unit on a roof structure, ensure the roof structure can support the weight and that proper consideration is given to the weather-tight integrity of the roof. Since the unit can vibrate during operation, sound vibration transmission should be considered when installing the unit. Vibration absorbing pads or springs can be installed between the condensing unit legs or frame and the roof mounting assembly to reduce noise vibration.

NOTE: These units require special location consideration in areas of heavy snow accumulation and/or areas with prolonged continuous subfreezing temperatures. Heat pump unit bases have cutouts under the outdoor coil that permit drainage of frost accumulation. Situate the unit to permit free unobstructed drainage of the defrost water and ice. A minimum 3” clearance under the outdoor coil is required in the milder climates.

In more severe weather locations, it is recommended that the unit be elevated to allow unobstructed drainage and air flow. The elevation minimums at right are recommended:

AFE REFRIGERANT HANDLING

Design Temperature Suggested Minimum Elevation

+15° and above 2 1/2"

-5° to +14° 8" below -5° 12"

While these items will not cover every conceivable situation, they should serve as a useful guide.

AVOID POSSIBLE INJURY, EXPLOSION OR DEATH, PRACTICE SAFE

HANDLING OF REFRIGERANTS

WARNING

AVOID POSSIBLE EXPLOSION, USE ONLY RETU RNABLE (NOT DISPOSABLE) SERVICE CYLINDERS WHEN REMOVING REFRIGERANT FROM A SYSTEM

• E

• E W

NSURE THE CYLINDER IS FREE OF DAMAGE WHICH COUL D LEAD TO A

LEAK OR EXPLOSION

NSURE THE HYDROSTATI C TEST DATE DOES NOT EXCEED NSURE THE PRESSURE RATING MEETS OR EXCEEDS

HEN IN DOUBT, DO NOT USE CYLINDER

YEARS

400

PSIG

Page 3

WARNING

EFRIGERANTS ARE HEAVIER THAN AIR OXYGEN IN YOUR LUNGS OR IN ANY ENCLOSE D SPACE POSSIBLE DIFFICULTY IN BREATHING OR DEATH

EVER PURGE REFRIGERANT INTO AN ENCLOSE D ROOM OR SPACE

• N

LAW, ALL REFRIGERANTS MUST BE RECLAIMED

F AN INDOOR LEAK IS SUSPECTED, THOROUGHLY VENTI LATE THE AREA

• I

BEFORE BEGINNING WORK

IQUID REFRIG ERANT CAN BE VERY COLD

• L

OR BLINDNESS, AVOID CONTA CT AND WEAR GLOVES AND GOGGLES

LIQUID REFRIGE RANT DOES CONTA CT YOUR SKIN OR EYES, SEEK MEDICAL

HELP IMMEDIATELY

LWAYS FOLLOW

• A

OISONOUS GAS WILL BE PRODUCED

EP A

REGULATIONS

. T

HEY CAN “PUSH OUT” THE

. TO

AVOID

. TO

AVOID POSSIBLE FROST BITE

. N

EVER BURN REFRIGERANT, AS

. BY

. IF

WARNING

AVOID POSSIBLE EXPLOSION

• N

EVER APPLY FLAME OR STEAM TO A REFRIG ERANT CYLINDER MUST HEAT A CYLINDER FOR FASTER CHARGING, PARTIALLY IMMERSE IT IN WARM WATER

EVER FILL A CYLINDER MORE THAN

• N

EVER ADD ANYTHING OTHER THAN

• N

TO AN

410A

BE LISTED OR CERTIFIED FOR THE TYPE OF REFRIG ERANT USED

TORE CYLINDERS IN A COOL, DRY PLACE

• S

LATFORM OR A ROLLER

R-410A

CYLINDER

80%

FULL OF LIQUID REFRIG ERANT

R-22 TO AN R-22

. THE

SERVICE EQUIPM ENT USED MUST

. N

EVER USE A CYLINDER AS A

. IF

CYLINDER OR

YOU

R-

EFRIGERANT LINES

Use only refrigerant grade (dehydrated and sealed) copper tubing to connect the condensing unit with the indoor evaporator. After cutting the tubing, install plugs to keep refrigerant tubing clean and dry prior to and during installation. Tubing should always be cut square keeping ends round and free from burrs. Clean the tubing to prevent contamination.

Do NOT let refrigerant lines come in direct contact with plumbing, ductwork, floor joists, wall studs, floors, and walls. When running refrigerant lines through a foundation or wall, openings should allow for sound and vibration absorbing material to be placed or installed between tubing and foundation. Any gap between foundation or wall and refrigerant lines should be filled with a pliable silicon-based caulk, RTV or a vibration damping material. A void suspending refrigerant tubing from joist s and studs with rigid wire or straps that would come in contact with the tubing. Use an insulated or suspension type hanger. Keep both lines separate and always insulate the suction line.

These sizes are suitable for line lengths of 79 feet or less. If a run of more than eighty feet is required, refer to Remote Cooling Service Manual, or TP-106 Long Line Set Application R-22, or TP-107 Long Line Set Application R-410A or contact your distributor for assistance.

CAUTION

THE

COMPRESSOR SUSCEPTIBLE TO MOISTURE ABSORPTION AND COUL D CAUSE COMPRESSOR FAILURE ANY LONGER THAN NECESSARY FOR INSTALLATION

POE

OIL FOR

R-410A

. DO

NOT LEAVE SYSTEM OPEN TO ATMOSPHERE

UNITS IS EXTREMELY

RECOMMENDED INTERCONNECTING TUBING (Ft)

Cond

Unit

0-24 25-49 50-79*

Line Diameter ( In . OD)

Tons Suct Liq Suct Liq Suct Liq

1 1/2 5/8 1/4 3/4 3/8 3/4 3/ 8

2 5/81/43/43/83/43/8

2 1/2 5/8 1/4 3/4 3/8 7/8 3/ 8

3 3/4 3/8 7/8 3/8 1 1/8 3/8

3 1/2 7/8 3/8 1 1/8 3/8 1 1/8 3/8

4 7/ 8 3/8 1 1/8 3/8 1 1/8 3/8 5 7/ 8 3/8 1 1/8 3/8 1 1/8 3/8

* Lines greater than 79 feet in length or vertical elevation changes more than 50 feet

Service Manual or contact your distributor for assistance.

refer to the Remote Cool ing

Insulation is necessary to prevent condensation from forming and dropping from the suction line. Armaflex (or satisfactory equivalent) with 3/8” min. wall thickness is recommended. In severe conditions (hot, high humidity areas) 1/2” insulation may be required. Insulation must be installed in a manner which protects tubing from damage and contamination.

Where possible, drain as much residual compressor oil from existing systems, lines, and traps; pay close attention to low areas where oil may collect. NOTE: If changing refrigerant types, ensure the indoor coil and metering device is compatible with the type of refrigerant being used; otherwise, the indoor coil must be replaced.

Page 4

URYING REFRIGERANT LINES

If burying refrigerant lines can not be avoided, use the following checklist.

1. Insulate liquid and suction lines separately .

2. Enclose all underground portions of the refrigerant lines in waterproof material (conduit or pipe) sealing the ends where tubing enters/exits the enclosure.

3. If the lines must pass under or through a concrete slab, ensure lines are adequately protected and sealed.

EFRIGERANT LINE CONNECTIONS

IMPORTANT

T o avoid overheating the service valve, TXV valve, or filter drier while brazing, wrap the component with a wet rag, or use a thermal heat trap compound. Be sure to follow the manufacturer’s instruction when using the heat trap compound. Note: Remove Schrader valves from service valves before brazing tubes to the valves. Use a brazing alloy of 2% minimum silver content. Do not use flux.

Torch heat required to braze tubes of various sizes is proportional to the size of the tube. T ubes of smaller size require less heat to bring the tube to brazing temperature before adding brazing alloy . Applying too much heat to any tube can melt the tube. Service personnel must use the appropriate heat level for the size of the tube being brazed. NOTE: The use of a heat shield when brazing is recommended to avoid burning the serial plate or the finish on the unit.

1. The ends of the refrigerant lines must be cut square, deburred, cleaned, and be round and free from nicks or dents. Any other condition increases the chance of a refrigerant leak.

2. “Sweep” the refrigerant line with nitrogen or inert gas during brazing to prevent the formation of copper-oxide inside the refrigerant lines. The POE oils used in R-410A applications will clean any copper-oxide present from the inside of the refrigerant lines and spread it throughout the system. This may cause a blockage or failure of the metering device.

3. After brazing, quench the joints with water or a wet cloth to prevent overheating of the service valve.

4. Ensure the filter drier paint finish is intact after brazing. If the paint of the steel filter drier has been burned or chipped, repaint or treat with a rust preventative. This is especially important on suction line filter driers which are continually wet when the unit is operating.

NOTE: Be careful not to kink or dent refrigerant lines. Kinked or dented lines will cause poor performance or compressor damage.

Do NOT make final refrigerant line connection until plugs are removed from refrigerant tubing. NOTE: Before brazing, verify indoor TXV is correct for R410A and proper size.

EAK TESTING

ITROGEN OR NITROGEN-TRACED

)

WARNING

Pressure test the system using dry nitrogen and soapy water to locate leaks. If you wish to use a leak detector, charge the system to 10 psi using the appropriate refrigerant then use nitrogen to finish charging the system to working pressure then apply the detector to suspect areas. If leaks are found, repair them. After repair, repeat the pressure test. If no leaks exist, proceed to system evacuation.

AVOID THE RISK OF FIRE OR EXPLOSION, NEVER USE OXYGEN, HIGH PRESSURE AIR OR FLAMMABLE GASES FOR LEAK TESTING OF A REFRIGERATION SYSTEM

WARNING

AVOID POSSIBLE EXPLOSION, THE LINE FROM THE NITROGEN CYLINDER MUST INCLUDE A PRESSURE REGULATOR AND A PRESSURE RELIEF VALVE NO MORE THAN

. THE

PRESSURE RELIEF VALVE MUST BE SET TO OPEN AT

150

PSIG

Page 5

YSTEM EVACUATION

Condensing unit liquid and suction valves are closed to contain the charge within the unit. The unit is shipped with the valve stems closed and caps installed. Do not open valves until

the system is evacuated.

WARNING

REFRIGERANT UNDER PRESSURE!

AILURE TO FOLLOW PROPER PROCEDURES MAY CAUSE PROPERTY

DAMAGE, PERSONAL INJURY OR DEATH

NOTE: Scroll compressors should never be used to evacuate or pump down a heat pump or air conditioning system.

1. Connect the vacuum pump with 250 micron capability to the service valves.

2. Evacuate the system to 250 microns or less using suction and liquid service valves. Using both valves is necessary as some compressors create a mechanical seal separating the sides of the system.

3. Close pump valve and hold vacuum for 10 minutes. Typically pressure will rise during this period.

• If the pressure rises to 1000 microns or less and remains steady the system is considered leak-free; proceed to startup.

• If pressure rises above 1000 microns but holds steady below 2000 microns, moisture and/or noncondensibles may be present or the system may have a small leak. Return to step 2: If the same result is encountered check for leaks as previously indicated and repair as necessary then repeat evacuation.

• If pressure rises above 2000 microns, a leak is present. Check for leaks as previously indicated and repair as necessary then repeat evacuation.

LECTRICAL CONNECTIONS

The condensing unit rating plate lists pertinent electrical data necessary for proper electrical service and overcurrent protection. Wires should be sized to limit voltage drop to 2% (max.) from the main breaker or fuse panel to the condensing unit. Consult the NEC, CEC, and all local codes to determine the correct wire gauge and length.

Local codes often require a disconnect switch located near the unit; do not install the switch on the unit. Refer to the installation instructions supplied with the indoor furnace/air handler for specific wiring connections and indoor unit configuration. Likewise, consult the instructions packaged with the thermostat for mounting and location information.

CAUTION

ROLONGED OPERATION AT SUCTION PRESSURES LESS THAN FOR MORE THAN SCROLLS AND PERMANENT DAMAGE TO THE SCROLL TIPS, DRIVE BEARINGS AND INTERNAL SEAL

5000 4500 4000 3500

MICRONS

3000

2500

ACUUM

2000

1500 1000

500

SECONDS WILL RESU LT IN OVERHEAT ING OF THE

LEAK(S) PRESENT

CONDENSIBLES OR SMALL LEAK PRESENT

NO LEAKS NO CONDENSIBLES

0 1 2 3 4 5 6 7 8 9

MINUTES

WARNING

HIGH VOLTAGE!

ISCONNECT

ULTIPLE POWER SOURCES MAY BE PRESENT

TO DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO ELECTRIC SHOCK MUST CONFO RM WITH CODES EQUIPM EN T PERFORMANCE, EQUIPM EN T DAMAGE OR FIRE

AVOID THE RISK OF FIRE OR EQUIPM EN T DAMAGE, USE COPPER

CONDUCTORS

ALL

POWER BEFORE SERVICING

NEC OR CEC

. U

NDERSIZED WIRES COUL D CAUSE POOR

AND ALL LOCAL

WARNING

. W

. F

AILURE

IRING

PSIG

VERCURRENT PROTECTION

The following overcurrent protection devices are approved for use.

• Time delay fuses

• HACR type circuit breakers

These devices have sufficient time delay to permit the motor-compressor to start and accelerate its load.

IGH VOLTAGE CONNECTIONS

Route power supply and ground wires through the high voltage port and terminate in accordance with the wiring diagram provided inside the control panel cover .

Page 6

LOW V

OL TAGE CONNECTIONS

Condensing unit control wiring requires a nominal 24 V AC (+/- 6 V AC), 60 Hz, minimum 25 V A service from either the indoor or an optional outdoor transformer. Low volt age wiring for the condensing units depends on the thermostat used. The unit is designed to work as part of a fully communicating HV AC system utilizing the ComfortNet™ CTK0* thermostat, ComfortNet™ compatible indoor unit, and up to four wires.

The unit also has legacy 24 V AC inputs to support non-communicating systems. Route control wires through the low voltage port and terminate in accordance with the wiring diagram provided inside the control panel cover.

NOTE: For two-stage units, refer to the Installation Instructions supplied with the variable speed indoor units for field wiring connections.

NOTE: If the heat pump unit is wired in the communicating mode together with a compatible communicating indoor unit and CTK0* communicating thermostat, then the communicating thermostat is able to search and identify the condensing unit when power is applied to the system. Refer to the Installation Manual of the optional communicating thermostat for more information.

Use the dipswitch to select defrost time interval (30, 60, 90, 120 minutes; see chart below).

30 Min ut e s

Factory default setting is 30 minutes. The maximum defrost cycle time is 10 minutes.

90 Minutes

Voltage Ports

30 0

60 Minutes

120 Minutes

HIGH VOLTAGE PORT

LOW VOLTAGE PORT

30 0

Dipswitch Settings for Selection

YSTEM START UP

NOTE: Power must be supplied to the 18 SEER outdoor units containing ECM motors before the power is applied to the indoor unit. Sending a low voltage signal without high voltage power present at the outdoor unit can cause malfunction of the control module on the ECM motor.

Adequate refrigerant charge for the matching evaporator coil or air handler and 15 feet of lineset is supplied with the condensing unit. If using evaporator coils or air handlers other than HSVTC coil it maybe necessary to add or remove refrigerant to attain proper charge. If line set exceeds 15 feet in length, refrigerant should be added at .6 ounces per foot of liquid line.

NOTE: Charge should always be checked using superheat when using a piston and subcooling when using TXV equipped indoor coil to verify proper charge.

Open the suction service valve first! If the liquid service valve is opened first, oil from the compressor may be drawn into the indoor coil TXV , restricting refrigerant flow and affecting operation of the system.

When opening valves with retainers, open each valve only until the top of the stem is 1/8” from the retainer . To avoid loss of refrigerant, DO NOT apply pressure to the retainer . When opening valves without a retainer remove service valve cap and insert a hex wrench into the valve stem and back out the stem by turning the hex wrench counterclockwise. Open the valve until it contacts the rolled lip of the valve body .

NOTE: These are not back-seating valves. It is not necessary to force the stem tightly against the rolled lip. After the refrigerant charge has bled into the system, open the liquid service valve. The service valve cap is the secondary seal

for the valve and must be properly tightened to prevent leaks. Make sure cap is clean and apply refrigerant oil to threads and sealing surface on inside of cap. Tighten cap finger-tight and then tighten additional 1/6 of a turn (1 wrench flat) to properly seat the sealing surfaces.

POSSIBLE REFRIGERANT LEAK!

AVOID A POSSIBLE REFRIG ERANT LEAK, OPEN THE SERVICE VALVES

UNTIL THE TOP OF THE STEM IS

of Defrost Time

CAUTION

1/8”

FROM THE RETAINER

Page 7

Do not introduce liquid refrigerant from the cylinder into the crankcase of the compressor as this may damage the compressor.

1. Break vacuum by fully opening liquid and suction base valves.

2. Set thermostat to call for cooling. Check indoor and outdoor fan operation and allow system to stabilize for 10 minutes for fixed orifices and 20 minutes for expansion valves.

HARGE VERIFICA TION

WARNING

CAUTION

USE

REFRIG ERANT CERTIFIED TO MAY CAUSE COMPRESSOR DAMAGE, AND IS NOT COVERED UNDER THE WARRANTY REFRIG ERANT TO MEET

. M

OST PORTABLE MACHINES CANNOT CLEAN USED

AHRI

STANDARDS

. U

SED REFRIG ERANT

REFRIGERANT UNDER PRESSURE!

• DO

NOT OVERCHARGE SYSTEM WITH REFRIG ERANT

O NOT OPERATE UNIT IN A VACUUM OR AT NEGATIVE PRESSURE

• D

AILURE TO FOLLOW PROPER PROCEDURES MAY CAUSE PROPERTY

DAMAGE, PERSONAL INJURY OR DEATH

NOTICE

IOLATION OF

PENALTIES

INAL CHARGE ADJUSTMENT

EPA

REGULATIONS MAY RESU LT IN FINES OR OTHER

PERATING THE COMPRESSOR WITH THE SUCTION VALVE CLOSED MAY

CAUSE SERIOUS COMPRESSOR DAMAGE

The outdoor temperature must be 60°F or higher. Set the room thermost at to COOL, fan switch to AUTO, and set the temperature control well below room temperature.

After system has stabilized per startup instructions, check subcooling and superheat as detailed in the following section.

SATURATED SUCTION PRESSURE

TEMPERATURE CHART

SUCTION PRESSURE

P SIG R-22 R-410A

50 26 1 52 28 3 54 29 4 56 31 6 58 32 7 60 34 8 62 35 10 64 37 11 66 38 13 68 40 14 70 41 15 72 42 16 74 44 17 76 45 19 78 46 20 80 48 21 85 50 24 90 53 26

95 56 29 100 59 31 110 64 36 120 69 41 130 73 45 140 78 49 150 83 53 160 86 56 170 90 60

SATURATED SUCTI ON

TEMPERATURE ºF

LIQUID PRESSURE

SATURATED LIQUID PRESSURE

TEMPERATURE CHART

P SIG R-22 R - 410A

200 101 70 210 105 73 220 108 76 225 110 78 235 113 80 245 116 83 255 119 85 265 121 88 275 124 90 285 127 92 295 130 95 305 133 97 325 137 101 355 144 108 375 148 112 405 155 118 415 157 119 425 n/a 121 435 n/a 123 445 n/a 125 475 n/a 130 500 n/a 134 525 n/a 138 550 n/a 142 575 n/a 145 600 n/a 149 625 n/a 152

CAUTION

SATUR ATED LIQU ID

TEMPERATURE ºF

Page 8

XPANSION VALVE SYSTEM

NOTE: Units matched with indoor coils equipped with non-adjustable TXV should be charged by subcooling only .

Run the unit on low stage cooling for 10 minutes until refrigerant pressures stabilize. Use the following guidelines and meth-

PREVENT PERSONAL INJURY, CAREFULLY CONNECT AND DISCONNECT MANIFOLD GAUGE HOSES BURNS

. DO

NOT VENT REFRIG ERANT INTO THE ATMOSPHERE ALL REFRIG ERANT DURING SYSTEM REPAIR AND BEFORE FINAL UNIT DISPOSAL

CAUTION

. E

SCAPING LIQUID REFRIGERANT CAN CAUSE

. R

ECOVER

ods to check unit operation and ensure that the refrigerant charge is within limits. Charge the unit on low stage.

1. Purge gauge lines. Connect service gauge manifold to base-valve service ports. Run system at least 10 minutes to allow pressure to stabilize.

2. T emporarily inst all a thermometer on the liquid line at the liquid line service valve and 4-6" from the compressor on the suction line. Ensure the thermometer makes adequate contact and is insulated for best possible readings. Use liquid line temperature to determine subcooling and vapor temperature to determine superheat.

3. Check subcooling and superheat. Systems with TXV application should have a subcooling of 5 to 7°F and superheat of 7 to 9 °F.

a. If subcooling and superheat are low, adjust TXV to 7 to 9 ºF superheat, then check subcooling.

NOTE: T o adjust superheat, turn the valve stem clockwise to increase and counter clockwise to decrease. b. If subcooling is low and superheat is high, add charge to raise subcooling to 5 to 7 °F then check superheat. c. If subcooling and superheat are high, adjust TXV valve to 7 to 9 ºF superheat, then check subcooling. d. If subcooling is high and superheat is low, adjust TXV valve to 7 to 9 ºF superheat and remove charge to lower the

subcooling to 5 to 7 ºF.

NOTE: Do NOT adjust the charge based on suction pressure unless there is a gross undercharge.

4. Disconnect manifold set, installation is complete.

SUBCOOLING FORMULA = SAT. LIQUID TEMP. - LIQUID LINE TEMP.

NOTE: Check the Schrader ports for leaks and tighten valve cores if necessary . Install cap s finger-tight.

EAT PUMP

- H

EATING CYCLE

The proper method of charging a heat pump in the heat mode is by weight with the additional charge adjustments for line size, line length, and other system components. For best results on outdoor units with TXVs, superheat should be 2-5° at 4-6" from the compressor. Make final charge adjustment s in the cooling cycle.

ADDITIONAL NOTES

1. There are (3) 7-segment LED displays on the PCB. Refer to the Troubleshooting chart at the end of this manual for definitions of the LED status.

2. “TERM” dip switch is used for communications bus configuration. Leave the settings to the factory default position.

3. “LEARN” push button is used in communication mode to support device recognition on start-up. As the communication system supports automatic identification of both indoor unit and outdoor unit, this button is not used for a normal start-up.

4. Press “TEST” push button, during system “Standby” mode to turn on both the compressor and outdoor fan for five seconds.

5. The “RECALL” push button is used to retrieve the six most recent faults. The control must be in Standby Mode (no thermostat inputs) to use the feature. Depress the push button for approximately two seconds and less than five seconds. The 7-segment LED displays will then display the six most recent faults beginning with the most recent fault and decrementing to the least recent fault. The faults may be cleared by depressing the button for greater than five seconds. Consecutively repeated faults are displayed a maximum of three times. Refer to the fault code definitions at the end of this manual for more details.

6. A forced defrost can be initiated by pressing “TEST” and “RECALL” push buttons simultaneously for more than 1 second with a valid call for heat. The forced defrost can be terminated by

• A 10 minute lapse in time,

• A coil temperature rise above 75°F or

• By pressing the two buttons again for more than 1 second.

Page 9

OMFORTNET

™ S

YSTEM

OVERVIEW

The ComfortNet system (or CT system) is a system that includes a ComfortNet compatible air handler/furnace/modular blower and air conditioner or heat pump with a CTK0* thermostat. Any other system configurations are considered invalid ComfortNet systems and must be connected as a traditional

CT compatible

Air Handler/Furnace/Modular

Blower

CT compatible

Air Handler/Furnace/Modular

Blower

(or legacy) system. The following table compares the valid CT systems.

A ComfortNet heating/air conditioning system differs from a legacy/traditional system in the manner in which the indoor unit, outdoor unit and thermostat interact with one another . In a traditional system, the thermostat sends commands to the indoor and outdoor units via analog 24 V AC signals. It is a one-way communication path in that the indoor and outdoor unit s typically do not return information to the thermostat.

On the other hand, the indoor unit, outdoor unit, and thermostat comprising a ComfortNet system “communicate” digitally with one another. It is now a two-way communications p ath. The thermostat still sends commands to the indoor and outdoor units. However, the thermost at may also request and receive information from both the indoor and outdoor units. This information may be displayed on the CT thermostat. The indoor and out door units also interact with one another. The outdoor unit may send commands to or request information from the indoor unit.

Two-way digit al communications is accomplished using only two wires. The thermostat and subsystem controls are powered with 24 V AC. Thus, a maximum of 4 wires between the equipment and thermostat is all that is required to operate the system.

CT compatible

Air Conditioner

CT compatible

Heat Pump

Full CT system

benefits & features

Full CT system

benefits & features

AIRFLOW CONSIDERATION

Airflow demands are managed differently in a fully communicating system than they are in a legacy wired system. The system operating mode (as determined by the thermostat) determines which unit calculates the system airflow demand. If the indoor unit is responsible for determining the airflow demand, it calculates the demand and sends it to the ECM motor. If the outdoor unit or thermostat is responsible for determining the demand, it calculates the demand and transmits the demand along with a fan request to the indoor unit. The indoor unit then sends the demand to the ECM motor. The table below lists the various ComfortNet systems, the operating mode, and airflow demand source.

System

Heat Pump + Air

Handler

System

Operating Mode

Cooling Heat Pump

Heat Pump Heating

Only

HP + Electric Heat

Strips

Electric Heat Strips

Only

Continuous Fan Thermostat

Airflow Demand

Sou rce

Heat Pump

> of Heat Pump or A ir

Handler Demand

Air Handler

For example, assume the system is a heat pump matched with an air handler. With a call for low stage cooling, the heat pump will calculate the system’s low stage cooling airflow demand. The heat pump will then send a fan request along with the low stage cooling airflow demand to the air handler . Once received, the air handler will send the low stage cooling airflow demand to the ECM motor. The ECM motor then delivers the low stage cooling airflow . The t able at right lists the nominal high and low stage airflow for the ComfortNet™ heat pumps.

Cooling Heat Pump

Heat Pump Heating

Heat Pump +

Furnace

Models

*SZC160241 800 600 800 600 *SZC160361 1200 800 1200 800 *SZC160481 1550 1100 1550 1100 *SZC160601 1800 1210 1800 1210 *SZC180361 1250 850 1250 850 *SZC180481 1750 1210 1750 1210 *SZC180601 1750 1210 1750 1210

Only

A uxiliary Heating Furnace

Continuous Fan Thermostat

Co oling Heat ing

High Low High Low

Heat Pump

Page 10

CTK0* WIRING

NOTE: Refer to section Electrical Connections - High Voltage Connections for 208/230 volt line connections to the air conditioner

or heat pump. NOTE: A removable plug connector is provided with the control to make thermostat wire connections. This plug may be

removed, wire connections made to the plug, and replaced. It is strongly recommended that you do not connect multiple wires into a single terminal. Wire nuts are recommended to ensure one wire is used for each terminal. Failure to do so may result in intermittent operation.

Typical 18 AWG thermostat wire may be used to wire the system components. However, communications reliability may be improved by using a high quality, shielded, twisted pair cable for the data transmission lines. In either case, 150 feet is the maximum length of wire between indoor unit and outdoor unit, or between indoor unit and thermostat.

FOUR-WIRE INDOOR AND OUTDOOR WIRING

Typical wiring will consist of 4 wires between the indoor unit and outdoor unit and between the indoor unit and thermostat. The required wires are: (a) data lines, 1 and 2; (b) thermostat “R” (24 V AC hot) and “C” (24 VAC common).

12RC

CTK0* Thermostat

CT Compatible Air Handler/Furnace/Modular Blower Integrated Control Module

CT Compatible AC/HP Integrated Control Module

TWO-WIRE OUTDOOR, FOUR-WIRE INDOOR WIRING

System Wiring Using Four-Wires

Two wires only may be utilized between the indoor and outdoor units. For this wiring scheme, only the data lines, 1 and 2, are required between the indoor and outdoor units. A 40V A, 208/230 VAC to 24 V AC transformer must be installed in the outdoor unit to provide 24 VAC power to the outdoor unit’s electronic control. CTK0* manual will state if this transformer is optional or mandatory . Four wires are required between the indoor unit and thermostat.

NOTE: Use of the CTK0* transformer is recommended if installing a dual fuel system. Failure to use the transformer

40VA Transformer (included in CTK0* kit)

208/230 VAC

24 VAC

12RC

CTK0* Thermostat

CT Compatible Air Handler/Furnace/Modular Blower Integrated Control Module

CT Compatible AC/HP Integrated Control Module

in the outdoor unit could result in over loading of the furnace transformer.

System Wiring using Two-Wires between Furnace

COMFORTNET™ SYSTEM ADVANCED FEATURES

The ComfortNet system permits access to additional sys-

and AC/HP and Four-Wires between Furnace

and Thermostat

tem information, advanced setup features, and advanced diagnostic/troubleshooting features. These advanced features are organized into a menu structure. See thermostat installation manual for directions on how to access the ComfortNet User Menus. See following tables for menu layout.

CONFIGURATION

The configuration menu provides functional information about the installed equipment. System tonnage and number of cooling and heating stages are displayed within this menu. A tonnage check will help determine if the equipment shared data is correct for the unit. If the tonnage is not correct, even though very rare, a memory card is available to load the proper data.

DIAGNOSTICS

Accessing the air conditioner/heat pump’s diagnostics menu provides ready access to the last six faults detected by the air conditioner/heat pump. Faults are stored most recent to least recent. Any consecutively repeated fault is stored a maximum of three times. Example: The power supply to the air conditioner/heat pump is continuously below 187 V AC. The control will only store this fault the first three consecutive times the fault occurs.

NOTE: It is highly recommended that the fault history be cleared after performing maintenance or servicing the heat pump.

Page 11

IDENTIFICATION

Model Number, Serial Number and Sof tware Version are displayed within this menu. A model number check will help determine if the equipment shared data is correct for the unit. If the model number is not correct, even though very rare, a memory card

is available to load the proper data.

SENSORS

The outdoor ambient temperature and coil temperature are displayed in the Sensor Menu. This information can be used for troubleshooting purposes.

COOL SET-UP

This menu allows for the adjustment of several cooling performance variables. Cool Airflow Trim (range from -10% to 10% in 2% increments), Cool Airflow Profiles, Cool Fan ON Delay, Cool Fan OFF Delay and Dehumidification Select (enable or disable dehumidification) can be adjusted in this menu. See the following images showing the four cooling airflow profiles.

• Profile A (default) provides only an OFF delay of one (1) minute at 100% of the cooling demand airflow .

OFF

100% CFM 100% CFM

OFF

1 min

• Profile B ramps up to full cooling demand airflow by first stepping up to 50% of the full demand for 30 seconds. The motor then ramps to 100% of the required airflow. A one (1) minute OFF delay at 100% of the cooling airflow.

OFF

50% CFM

1/2 min

100% CFM

OFF

1 min

• Profile C ramps up to 82% of the full cooling demand airflow and operates there for approximately 7 1/2 minutes. The motor then steps up to the full demand airflow . Profile C also has a one (1) minute 100% OFF delay .

OFF

100% CFM

OFF

• Profile D ramps up to 50% of the demand for 1/2 minute, then ramps to 82% of the full cooling demand airflow and operates there for approximately 7 1/2 minutes. The motor then steps up to the full demand airflow . Profile D has a 1/2 minute at 50% airflow OFF

delay.

OFF

Airflow Tables

OFF

STATUS

The current system operational mode and requested indoor CFM is reported in this menu. This information can be used for troubleshooting purposes.

HEAT SET-UP

This menu allows for the adjustment of several heating performance variables. Heat Airflow Trim (range from -10% to 10% in 2% increments), Heat Fan ON Delay , Heat Fan OFF Delay , Defrost Interval and Compressor Delay can be adjusted in this menu. Defrost Interval determines the amount of compressor run time between defrost cycles. Compressor delay selects a compressor off time after a reversing valve shift.

Page 12

AIR CONDITIONER/HEAT PUMP ADVANCED FEATURES MENU

CONFIGURATION

Submenu Item Indication (for Display Only; not User Modifiable)

Number of AC Stages (CL STG) Displays the number of air conditioning stages; applies to AC and N umber of HP Stages (HT STG) Displays the number of heat pump st ages; applies to HP only.

AC Tonnage (TONS) Displays the air conditionin g tonnage; applies to AC and HP.

DIAGNOSTICS

Submenu Item Indication/User Modifiable Options Comments

Fault 1 (FAULT #1) Most recent AC/HP fault For display only Fault 2 (FAULT #2) Next most recent AC/HP fault For display only Fault 3 (FAULT #3) Next most recent AC/HP fault For display only Fault 4 (FAULT #4) Next most recent AC/HP fault For display only Fault 5 (FAULT #5) Next most recent AC/HP fault For display only Fault 6 (FAULT #6) Least recent AC/HP fault For display only

Clear Fault History (CLEAR) NO or YES

NOTE: Consecutively repeated faults are shown a maximum of 3 times

Selecting "YES" clears the fault history

IDENTIFICATION

Submenu Item Indication (for Display Only; not User Modifiable)

Model Number (MOD NUM) Displays the air conditioner or heat pump model number Serial Number (SER NUM) Displays the air conditioner or heat pump serial number (Optional) Software (SOFTWARE) Displays the application software revision

SENSORS

Submenu Item User Modifiable Options Comments

Outdoo r Air Temp erature

(AIR TMP)

Outdoor Coil Temperature

(COIL TMP)

Submenu Ite m Use r Modifia ble Options Comme nts

Cool Ai rflow Trim

(CL TRM )

Cool Airflow Profile

(CL P R F L)

Cool ON Del ay

(CL O N)

Cool OFF Delay

(CL OFF)

Dehumidification Selec t

(DEHUM)

D ispl a ys the outdoor air temperature

Sensor may or may not be available on an air conditioner. Check air conditioner instructions for details.

D ispl a ys the outdoor coil

Required for heat pump operation.

temperature

COOL SET-UP

-10% to +10% in 2% increments, default is 0% A, B , C, or D, default i s D Select s t he ai rflow profile; appl ies t o a ir

5, 10, 20, or 30 sec onds, default is 5 seconds 30, 60, 90, or 120 s econds , default is 30 s econds

ON or OF F (default is O F F) Sel ect in g " O F F" disabl es dehum i dificat ion ;

Sel ec t s t he ai rflow trim am ount ; appl ies t o air conditioner only.

conditioner only. Sel ect s t he i ndoor blo wer ON d elay; applies t o air c ondi t ioner only. Sel ec t s t he i ndoor blower OF F del ay ; applies t o air c ondi t ioner only.

s elect ing " O N" ena bles dehu m i dific ation; applies t o air c ondi t ioner only.

Page 13

AIR CONDITIONER/HEAT PUMP ADVANCED FEATURES MENU (CONT’D)

STATUS

Submenu It e m I ndica tion (for Display Only; not User Mo difi able)

Mode (MODE) Displays the current air conditioner operating mode CFM (CFM) Displays the airflow for the current operating mode

HEAT SET-UP

Submenu Item Use r Modifiable Options Comm e nts

Heat Airflow Trim

(HT TRM )

Heat ON Delay

(HT ON)

Heat O F F Delay

(HT OF F )

De fro st In te r val

(DEFROST)

Comp res s o r Delay

(CMP DL Y )

-10% t o + 10% in 2% inc rem ent s , default is 0% 5, 10, or 15 s ec onds, default is 5 seconds 30, 50, 70, or 90 s ec onds, default is 30 s ec onds 30, 60, 90, or 120 m inut es , default is 30 m inut es .

0, 5, 15, or 30 s ec onds, default is 30 seconds

Select s t he airflow trim am ount ; applies t o heat pum p only . Selec t s t he indoor blower heat ON delay ; applies to heat pump only . Selec t s t he indoor blower heat OFF delay ; applies to heat pump only . Selec t s t he tim e int erval between defrost s ; applies to heat pump only .

Selects the compressor off time after a revers ing valve s hift; appli es t o heat pum p only .

THERMOSTAT MENU

If this heat pump is installed with a CT compatible furnace, the system is recognized as a dual fuel system. The balance point temperature should be set via the thermostat. See thermostat instruction manual for details on how to set the balance point.

NETWORK TROUBLESHOOTING

Verify that the bus TERM dipswitches are in the ON position. The ComfortNet™ system is a fully communicating system which operates over a communicating

network. Occasionally the need to troubleshoot the network may arise. The integrated control module has some on-board tools that may be used to troubleshoot the network. These tools are: red communications LED, green receive (Rx) LED, and learn button.

• Red communications LED - Indicates the status of the network. The table below indicates the LED status and the corresponding potential problem.

• Green receive LED - Indicates network traffic. The table below indicates the LED status and the corresponding potential problem.

• LEARN button - Used to reset the network. Depress the button for approximately 2 seconds to reset the network.

OFF ON

TERM TERM

SYSTEM TROUBLESHOOTING

NOTE: Refer to the instructions accompanying the CT compatible indoor air handler/furnace/modular blower unit for troubleshooting

information regarding indoor unit diagnostics.. Refer to the Troubleshooting Chart at the end of this manual for a listing of possible air conditioner and heat pump error codes,

possible causes and corrective actions.

Page 14

LED LED Stat us Indi cation Possible Causes Correcti v e A ct ion(s) Notes & Cautions

Red Communications

LED

Off • Normal condition • None • None • None

1 Flash • Communi cati ons Failure • Communic ations Fai lure

2 Flas hes • Out -of-box res et • None

Off • Turn power OFF pri or to

1 Stead y Flash • No net work found

• No power • No power t o furnac e • Check fuses and circuit

• Communic at ions error • O pen fus e • Replace blown fuse

• Con trol powe r up

• Learn button depressed

• Com m uni cati ons error • Check for s horts i n l ow

• B roken/ di sconne cted data wire(s)

• Heat pump is i n stal l ed as a legacy/ traditional system

• Depres s Learn Button

breakers; repl ace/reset

voltage wiring i n heat pum p/system

• Res et network by depressing lea rn button

• Chec k data 1/ dat a 2 voltages

• Check communications wiring (dat a 1/ data 2 wires)

• Chec k wire c onn ecti ons at term i nal bl ock

• Depres s onc e qui ck l y for a power-up reset

• Depres s and hold for 2 seconds for an out-of-box reset

• None

repair

• Turn power OFF pri or to repair

• Verify wires at terminal blocks are securely twisted together prior t o i nserti ng into terminal block

Green Recei ve LED

Rapid Flashing • Normal network t raffic • Control is “t alki ng” on

On Solid • Data 1/ Data 2 miss-wire

network as ex pected

• Dat a 1 a nd data 2 wires reversed at heat pump, thermostat , or CT compat i b l e i ndoo r uni t

• S ho rt be tween data 1 and data 2 wi res

• S ho rt be tween data 1 or data 2 wi res and R (24VAC) or C (24VAC common)

• V eri fy h eat pump installation type (legacy/ traditional or communicating)

• Chec k data 1/ dat a 2 voltages

• None • None

• Check communications wiring (dat a 1/ data 2 wires)

• Check wire connec t ions at term i nal bl ock

• Chec k data 1/ dat a 2 voltages

• Turn power OFF pri or to repair

• Verify wires at terminal blocks are securely twisted together prior t o i nserti ng into terminal block

Page 15

TROUBLESHOOTING INFORMATION: CONDENSING UNIT

Complaint

POSSIBLE CAUSE

DOTS IN ANALYSIS

GUIDE INDICATE

"POSSIBLE CAUSE"

Power Failure Blown Fuse Unbalanced Power , 3PH Loose Connection Shorted or Brok en Wires Open Fan Overload Faulty Therm o stat Faulty Transf ormer Shorted or Open Cap ac i tor Internal Compressor Overloa d Open Shorted or Groun ded Compressor Compressor Stuck Faulty Compressor Contactor Faulty Fan Rela y Open Control Circuit Low Voltage Faulty Evap. Fan Motor Shorted or Groun ded Fan Motor Improper Coo ling Antici pator Shortage of Refrigerant Restricted Liquid Line Open Elemen t or Limit on Elec . Heater Dirty Air Filter Dirty Indoor Co il Not enough air across Indoor Coil Too much air ac r os s Indoor Coil Overcharge of R efrigerant Dirty Outdoor Coil Noncondensibles Recirculation of Condensing Air Infiltration of Outdoor Air Improperly Lo cated Thermostat Air Flow Unbala nc ed System Undersized Broken Internal Parts Broken Valves Inefficient Compre s so r Wrong Type Expansion Valve Expansion Devic e Restricted Oversized Expans ion Valve Undersized Expansion Valve Expansion Val ve B ul b Loose Inoperative Expansion Valve Loose Hold-down B olts Faulty Reversing Valve Faulty Defr os t C ontrol Faulty Defrost Thermos ta t Flowrator Not Seating Properly

No Cooling Unsatisfactory Cooling/Heating

SYMPTOM

System wi ll not start

Compressor will not start - fan runs

Comp. and Cond. Fan will not start

Evaporator fan will not start

Condenser fa n will not start

Compressor r un s - goes off on overl o ad

Compressor cycles on overload

System runs continuous ly - little c oo l ing/htg

•

•••

••••••

••

••• •

••

• ••••

•

••

•••

•

•••

••

•• •• •

♦♦

••• •

•• •

••

•• •

•••

••

•• ••

•

••• • ••

••• • •• •

••

••• • •

•• •

•

Cooling or Heating Cycle (Heat Pump)

•••

System

Operating

Pressures

Test Method

Remedy

Too cool and then too warm

Not cool enoug h on warm days

Certain areas too cool, others too warm

Compressor is noisy

System runs - blows cold ai r i n heating

Unit will not terminate defrost

Unit will not defrost

Low suction pressure

Low head press ure

High suction pressure

High head pressure

Test Voltage Inspect Fuse Size & Ty pe Test Voltage Inspect Co nnection - Tigh ten Test Circuits With Ohmmeter Test Contin ui ty of Overload Test Contin ui ty of Thermostat & Wir i ng Check Control Circuit wit h Voltmeter Test Capacitor

♦

•

♦

••

♦

••

•

♦♦♦ ♦♦♦ ♦♦♦♦♦ ♦ ♦♦♦♦♦♦♦

♦

Heating Cycle Only (Heat Pump)

Test Contin ui ty of Overload Test Motor Windings Use Test Cord Test Contin ui ty of Coil & Cont ac ts Test Contin ui ty of Coil And Contacts Test Control Circuit with Voltmeter Test Voltage Repair or Replace

♦

Test Motor Windings Check Resistance of Anticipator Test For Leak s, Add Refriger a nt Remove Restr iction, Repl ace Restricted Part Test Heater E lement and Contr o l s Inspect Filter-Clean or Replace

♦

Inspect Coil - Clean

♦

Check Blower Speed, Duct Static Press, Filter

♦

Reduce Blower Speed

•

Recover Part of Charge

••

Inspect Coil - Clean

•

Recover Charge, E v ac uate, Recharge

•

Remove Obstruction to Air Flow Check W i n dows, Doors, Vent Fans, Etc . Relocate Ther mo stat Readjust Air Volume Dampers Refigure Cool ing Load Replace Com p r es sor Test Compressor Efficiency Test Compressor Efficiency Replace Valv e

♦

Remove Restriction or Repl ace Expansion Devi ce Replace Valv e Replace Valv e Tighten Bulb Bracket Check Valve Op er ation Tighten Bolts Replace Valv e or S ol e no i d Test Control Test Defrost Thermostat Check Flowrator & Seat or Replace Flowrator

For detailed service information refer to the Remote Condensing Unit Service manual.

Page 16

TROUBLESHOOTING INFORMATION: UNITARY DIAGNOSTIC CODES

3934%-42/5",%3(//4).'

5.)4!29$)!'./34)##/$%3

3YMPTOMSOF

!BNORMAL/PERATION

,EGACY#OMFORT.ET

4HERMOSTAT

sIntegrated control

module diagnostic/status LED display shows the indicated code.

s#OMFORT.ETTHERMOSTAT

displays ‘---‘ in the temperature display area.

sHeat pump fails to operate

in heating mode.

sIntegrated control

module diagnostic/status LED display shows the indicated code.

s#OMFORT.ETTHERMOSTAT

displays error message.

sAir conditioner/heat pump

fails to operate.

sIntegrated control

module diagnostic/status LED display shows the indicated code.

sAir conditioner/heat pump

fails to operate.

sIntegrated control

module diagnostic/status LED display shows the indicated code.

sAir conditioner/heat pump

fails to operate.

sIntegrated control

module diagnostic/status LED display shows the indicated code.

s#OMFORT.ETTHERMOSTAT

displays error message.

s Air conditioner/heat

pump operates at reduced performance.

sAir conditioner/heat pump

operating at low stage when expected to operate at high stage.

sIntegrated control

module diagnostic/status LED display shows the indicated code.

$IAGNOSTIC3TATUS

,%$$ISPLAY#ODES

$IGIT $IGIT $IGIT -ESSAGE #ODE

",!.+ A 2 sOutdoor air

",!.+ A3sOutdoor coil

",!.+ E5sOpen fuse ",/7.

",!.+ EEsBoard mis-

",!.+ b0sCirculator

",!.+ b9sAirﬂow is

&AULT

$ESCRIPTION

temp sensor fault

operation

blower motor is not running when it should be running.

lower than demanded

#OMFORT.ET

4HERMOSTAT/NLY

AIR

3%.3/2

FLT

COIL

3%.3/2

FLT

FUSE

).4%2.!,

FAULT

MOTOR

./425.

LOW ID

AIRFLOW



A2 sShorted sensor.

A3 s Shorted sensor

E5 sShort in low

EE s Compressor

b0 sIndoor blower

b9 sIndoor blower

0OSSIBLE

#AUSES

sOpen sensor. sSensor

disconnected.

sSensor out of

range.

sOpen sensor. sSensor.

disconnected.

sSensor out of

range.

voltage wiring.

relay contacts welded.

motor problem.

sCommunications

error between indoor and outdoor unit.

motor problem

s

Blocked ﬁlters.

sRestrictive/

undersized ductwork

sIndoor/ outdoor

unit miss-match.

sCheck sensor

sReplace open/

sCheck sensor

sReplace open/

sLocate and

sReplace control. sTurn power OFF prior

sCheck indoor

sCheck indoor unit

sRepair/ replace

sCheck indoor

sCheck ﬁlters;

sCheck ductwork;

sVerify indoor and

#ORRECTIVE

!CTIONS

connection.

shorted sensor.

connection.

shorted sensor.

correct short in low voltage wiring.

blower motor.

blower motor wiring.

control.

any faulty wiring.

indoor blower motor or control.

blower motor.

clean/replace as needed.

resize as needed.

outdoor units are properly matched.

.OTES

#AUTIONS

sTurn power OFF prior

to repair.

sReplace with correct

replacement part.

sTurn power OFF prior

to repair.

sReplace with correct

replacement part.

sTurn power OFF prior

to repair.

sReplace fuse with

3-amp automotive type.

to repair

sReplace with correct

replacement part.

sTurn power OFF prior

to repair.

sApplies only to fully

communicating system

USING#OMFORT.ET

thermostat.

sReplace with correct

replacement part.

sTurn power OFF prior

to repair.

sApplies only to fully

communicating system

USING#OMFORT.ET

thermostat.

sReplace with correct

replacement part. See speciﬁcation sheet(s) for airﬂow requirements and maximum external static pressure.

sSee speciﬁcation

sheets for approved system matches.

Page 17

TROUBLESHOOTING INFORMATION: UNITARY DIAGNOSTIC CODES

5.)4!29$)!'./34)##/$%3

3YMPTOMSOF

!BNORMAL/PERATION

,EGACY#OMFORT.ET

4HERMOSTAT

sAir conditioner/heat pump

fails to operate.

sIntegrated control

module diagnostic/status LED display shows the indicated code.

s#OMFORT.ETTHERMOSTAT

displays error message.

sAir conditioner/heat pump

fails to operate.

sIntegrated control

module diagnostic/status LED display shows the indicated code.

s#OMFORT.ETTHERMOSTAT

displays error message.

sAir conditioner/heat pump

fails to operate.

sAir conditioner/heat pump

operating at reduced performance.

sAir conditioner/heat pump

operating at low stage when expected to operate at high stage.

sIntegrated control

module diagnostic/status LED display shows the indicated code.

s#OMFORT.ETTHERMOSTAT

displays error message.

$IAGNOSTIC3TATUS

,%$$ISPLAY#ODES &AULT

$IGIT $IGIT $IGIT -ESSAGE #ODE

",!.+ d0sData not yet

",!.+ d1sInvalid Data

",!.+ d2s System

$ESCRIPTION

ON.ETWORK

Mis-Match

#OMFORT.ET4-

4HERMOSTAT/NLY 0OSSIBLE

./.%4

DATA

).6!,)$

DATA

).6!,)$

SYSTEM

d0 sAir conditioner/

d1 s Air conditioner/

d2 s Air conditioner/

#AUSES

heat pump is wired as part of a communicating system and integrated control module does not contain any shared data.

heat pump is wired as part of a communicating system and integrated control module contains invalid shared data or network data is invalid for the integrated control module.

heat pump is wired as part of a communicating system and outdoor unit requires airﬂow greater than indoor unit’s airﬂow capability.

sShared data is

incompatible with the system or missing parameters.

#ORRECTIVE

!CTIONS

sVerify

system type (communicating or legacy)

sPopulate shared

data using memory card

sWire system as

legacy system

sVerify

system type (communicating or legacy).

sPopulate correct

shared data using memory card.

sWire system as

legacy system.

sVerify system type

(communicating or legacy).

sVerify shared

data is correct for your speciﬁc model; repopulate data if required.

sWire system as

legacy system.

.OTES

#AUTIONS

sTurn power OFF prior

to repair.

sUse memory card for

your speciﬁc model.

sInsert memory card

BEFORE turning power

/.-EMORYCARDMAY

be removed after data is loaded. Turn power OFF before removing memory card.

sError code will

be cleared once data is loaded. Applies only to fully communicating system

USING#OMFORT.ET

thermostat.

sTurn power OFF prior

to repair.

sUse memory card for

your speciﬁc model.

sInsert memory card

BEFORE turning power

/.-EMORYCARDMAY

be removed after data is loaded. Turn power OFF before removing memory card.

sError code will

be cleared once data is loaded. Applies only to fully communicating system

USING#OMFORT.ET

thermostat.

sTurn power OFF prior

to repair.

sUse memory card for

your speciﬁc model.

sInsert memory card

BEFORE turning power

/.-EMORYCARDMAY

be removed after data is loaded. Turn power OFF before removing memory card.

sError code will

be cleared once data is loaded. Applies only to fully communicating system

USING#OMFORT.ET

thermostat.

Page 18

TROUBLESHOOTING INFORMATION: UNITARY DIAGNOSTIC CODES

5.)4!29$)!'./34)##/$%3

3YMPTOMSOF

!BNORMAL/PERATION

,EGACY#OMFORT.ET

4HERMOSTAT

s Air conditioner/heat pump

fails to operate.

sIntegrated control module

diagnostic/status LED display shows the indicated code.

s#OMFORT.ETTHERMOSTAT

displays error message.

sAir conditioner/heat pump

fails to operate.

sIntegrated control

module diagnostic/status LED display shows the indicated code.

s#OMFORT.ETTHERMOSTAT

displays error message.

s Very long run time. sFour consecutive

compressor protector trips with average run time between trips greater than 3 hours.

sCompressor operating at

high speed and outdoor fan operating at low speed

sIntegrated control

module diagnostic/status LED display shows the indicated code.

sCompressor and outdoor

fan are off.

sThermostat demand is

present.

sIntegrated control

module diagnostic/status LED display shows the indicated code.

$IAGNOSTIC3TATUS

,%$$ISPLAY#ODES &AULT

$IGIT $IGIT $IGIT -ESSAGE #ODE

",!.+ d3sConﬁguration

",!.+ d4s Invalid

",!.+ 01sLow Side

",!.+ 01sLow Pressure

$ESCRIPTION

Mis-match

Memory Card Data

Fault

Cut Out Trip

#OMFORT.ET

4HERMOSTAT/NLY 0OSSIBLE

).6!,)$

#/.&)'

).6!,)$

MC DATA

LOW SIDE

FAULT

,03/0%. 01 sLow refrigerant



#AUSES

d3 sShared data sent

to integrated control module does not match hardware conﬁguration.

d4 sShared data on

memory card has been rejected.

01 sLow refrigerant

charge.

sRestriction in

liquid line.

sIndoor blower

motor failure.

sIndoor

thermostat set extremely low.

charge.

sRestriction in

liquid line.

sIndoor blower

motor failure.

sIndoor

thermostat set extremely low.

#ORRECTIVE

!CTIONS

sVerify

system type (communicating or legacy).

sVerify shared

data is correct for your speciﬁc model; repopulate data if required.

sWire system as

legacy system.

sVerify

system type (communicating or legacy).

sVerify shared

data is correct for your speciﬁc model; repopulate data if required.

sWire system as

legacy system.

sVerify refrigerant

charge; adjust as needed.

sCheck for

restricted liquid line; repair/ replace as needed.

sCheck indoor

blower motor; repair/replace as needed.

sCheck indoor

thermostat setting.

sVerify refrigerant

charge; adjust as needed.

sCheck for

restricted liquid line; repair/ replace as needed.

sCheck indoor

blower motor; repair/replace as needed.

sCheck low

pressure switch; repair/replace as needed.

sCheck indoor

thermostat setting.

.OTES

#AUTIONS

sTurn power OFF prior

to repair.

sUse memory card for

your speciﬁc model.

sInsert memory card

BEFORE turning power

/.-EMORYCARDMAY

be removed after data is loaded. Turn power OFF before removing memory card.

sError code will

be cleared once data is loaded. Applies only to fully communicating system

USING#OMFORT.ET

thermostat.

sTurn power OFF prior

to repair.

sUse memory card for

your speciﬁc model.

sInsert memory card

BEFORE turning power

/.-EMORYCARDMAY

be removed after data is loaded. Turn power OFF before removing memory card.

sError code will be

cleared once data is loaded.

sTurn power OFF prior

to repair.

sFault will clear after 30

consecutive normal cycles.

sFault may be cleared

by cycling 24VAC to control.

sReplace with correct

replacement part(s).

sTurn power OFF prior

to repair.

sReplace with correct

replacement part(s).

Page 19

TROUBLESHOOTING INFORMATION: UNITARY DIAGNOSTIC CODES

Digit 3 Digit 2 Digit 1

Compressor and outdoor f Low pressure switch trip 3 times within same thermostat demand. Thermostat demand is present. Integrated control module diagnostic/status LED display shows the indicated code.

displays error message.

Four consecutive compressor protector trips with average run time between trips greater than 1 minute and less than 15 minutes. Low pressure and high pressure switches are closed. Integrated control module diagnostic/status LED display shows the indicated code.

Compressor and outdoor f Thermostat demand is present. Integrated control module diagnostic/status LED display shows the indicated code.

displays error message.

L1Low Pressure

Cut Out Lockout (3 T rips)

02High Side

Fault

02High

Pressure Cut Out Trip

L2High

Pressure Cut Out Lockout (3 T rips)

LPS 01 Low refrigerant

HIGH SIDE

FAULT

HPS

charge. Restriction in liquid line. Indoor blower motor failure. Indoor thermostat set extremely low.

02 Blocked

condenser coil. Outdoor fan not running.

02 Blocked

condenser coil. Outdoor fan not running.

02 Blocked

condenser coil. Outdoor fan not running.

Verify refrigerant charge; adjust as needed. Check for restricted liquid line; repair/replace as needed. Check indoor blower motor; repair/replace as needed. Check low pressure switch; repair/replace as needed. Check indoor thermostat setting.

Check and clean condenser coil. Check outdoor fan motor; repair/ replace as needed. Check outdoor fan motor wiring; repair/replace as needed. Check outdoor fan motor capacitor; replace as needed.

Turn power OFF prior to repair. Must clear fault by cycling 24VAC to control. Replace with correct replacement part(s).

Turn power OFF prior to repair. Fault will clear after 4 consecutive normal cycles. Fault may be cleared by cycling 24VAC to control. Replace with correct replacement part(s).

Turn power OFF prior to repair. Replace with correct replacement part(s).

Turn power OFF prior to repair. Must clear fault by cycling 24VAC to control. Replace with correct replacement part(s).

Page 20

TROUBLESHOOTING INFORMATION: UNITARY DIAGNOSTIC CODES

Digit 3 Digit 1Digit 2

Run time for last 4 cycles is less than 3 minutes each. Compressor protector has not tripped. Low pressure and high pressure switches are closed. Integrated control module diagnostic/status LED display shows the indicated code.

Compressor and outdoor f Compressor protector trips four consecutive times. Average run time between trips is less than 15 seconds. Integrated control module diagnostic/status LED display shows the indicated code.

displays error message.

Compressor and outdoor f 4 hours. Low pressure and high pressure switches are closed. Integrated control module diagnostic/status LED display shows the indicated code.

displays error message.

Compressor and outdoor f Low pressure and high pressure switches are closed. Integrated control module diagnostic/status LED display shows the indicated code.

displays error message.

or greater than

03Short Cycling CMPR

04Locked Rotor

05Open Circuit

06Open Start

Circuit

SHRT

CYCLE

ROTOR

CIRCUIT

START

03 Intermittent

thermostat demand. Faulty compressor relay.

Compressor bearings are seized. Failed compressor run capacitor. Faulty run capacitor wiring. Low line voltage.

Power is disconnected. Failed compressor protector. Compressor not properly wired to control.

Compressor start winding is open. Failed compressor run capacitor. Faulty run capacitor wiring. Compressor not properly wired to control. Faulty compressor wiring.

Check thermostat and thermostat wiring; repair/ replace as needed. Check compressor relay operation; replace control as needed.

Check compressor operation; repair/ replace as needed. Check run capacitor; replace as needed. Check wiring; repair/replace as needed. Verify line voltage is within range on rating plate; contact local utility is out of range.

Check circuit breakers and fuses. Check wiring to unit; repair/ replace as needed. Check compressor; repair/replace as needed Check compressor wiring; repair/ replace as needed.

Check compressor; repair/replace as needed. Check run capacitor; replace as needed. Check wiring; repair/replace as needed.

Turn power OFF prior to repair. Fault will clear after 4 consecutive normal cycles. Fault may be cleared by cycling 24VAC to control. Replace with correct replacement part(s). Minimum compressor runt time is changed from 30 seconds to 3 minutes.

Turn power OFF prior to repair. Must clear fault by cycling 24VAC to control. Replace with correct replacement part(s).

Turn power OFF prior to repair. Fault will clear after normal cycle. Fault may be cleared by cycling 24VAC to control. Replace with correct replacement part(s).

Turn power OFF prior to repair. Fault will clear after 1 normal cycle. Fault may be cleared by cycling 24VAC to control. Replace will correct replacement part(s).

Page 21

TROUBLESHOOTING INFORMATION: UNITARY DIAGNOSTIC CODES

Digit 3 Digit 2 Digit 1

Compressor and outdoor f Low pressure and high pressure switches are closed. Open start circuit has been detected 4 times with 5 minute delay between each detection. Integrated control module diagnostic/status LED display shows the indicated code.

displays error message. Compressor and outdoor

f Low pressure and high pressure switches are closed. Integrated control module diagnostic/status LED display shows the indicated code.

displays error message.

Compressor and outdoor f Low pressure and high pressure switches are closed. Open run circuit has been detected 4 times with 5 minute delay between each detection. Integrated control module diagnostic/status LED display shows the indicated code.

L6Open Start

Circuit Lockout

07Open Run

Circuit

L7Open Run

Circuit Lockout

START

06 Compressor start

winding is open. Failed compressor run capacitor. Faulty run capacitor wiring. Compressor not properly wired to control. Faulty compressor wiring.

07 Compressor run

winding is open. Compressor not properly wired to control. Faulty compressor wiring.

07 Compressor run

winding is open. Compressor not properly wired to control. Faulty compressor wiring.

Check compressor; repair/replace as needed. Check run capacitor; replace as needed. Check wiring repair/replaced as needed.

Check compressor; repair/replace as needed. Check wiring; repair/replace as needed.

Turn power OFF prior to repair Must clear fault by cycling 24VAC to control. Replace with correct replacement part(s).

Turn power OFF prior to repair. Fault will clear after 1 normal cycle. Fault may be cycling 24VAC to control. Replace with correct replacement part(s).

Turn power OFF prior to repair. Must clear fault by cycling 24VAC to control. Replace with correct replacement part(s).

displays error message. Air conditioner/heat

pump may appear to be operating normally. Compressor protector may be open (compressor and outdoor f Integrated control module diagnostic/status LED display shows the indicated code.

L8Low Line

Voltage

VOLT

Low line voltage. Check circuit

breakers and fuses. Verify unit is connected to power supply

rating plate. Correct low line voltage condition; contact local utility if needed.

Turn power OFF prior to repair. Control detects line voltage less than 185 VA C. Fault will clear if line voltage increases above 185 VAC.

Page 22

TROUBLESHOOTING INFORMATION: UNITARY DIAGNOSTIC CODES

Air conditioner/heat pump may appear to be operating normally. Compressor protector may be open (compressor and outdoor f Integrated control module diagnostic/status LED display shows the indicated code.

Air conditioner/heat pump may appear to be operating normally. Integrated control module diagnostic/status LED display shows the indicated code.

Integrated control module diagnostic/status LED display shows the indicated code.

Digit 3

Digit 1Digit 2

H8High Line

Voltage

09Low Pilot

Voltage

P0Comp

Protector Open

High line

voltage

Control detects secondary voltage less than 18 VAC. Transformer overloaded. Low line voltage.

start windings. Compressor run winding is open. Compressor not properly wired to control. Faulty compressor wiring. Failed compressor run capacitor. Faulty run capacitor wiring.

VOLT

LOW

VOLT

displayed displayed through run or

VOLT AGE

Correct high line voltage condition; contact local utility if needed. Verify unit is connected to power

on rating plate.

Check fuse. Correct low secondary voltage condition. Check transformer; replace if needed.

Check compressor; repair/replace as needed. Check wiring; repair/ replace as needed. Check run capacitor; replace as needed.

Check circuit breaker and fuses. Verify unit is connected to power

on rating plate.

Turn power OFF prior to repair. Control detects line voltage greater than 255 VA C. Fault will clear if line voltage decreases below 255 VAC.

Turn power OFF prior to repair. Fault will clear if secondary voltage rises above 21VAC. Replace with correct replacement part(s).

Turn power OFF prior to repair. Fault will clear after 1 normal cycle. Fault may be cleared by cycling 24VAC to control. Replace with correct replacement part(s).

Turn power OFF prior to repair. Control detects line voltage less than 185 VA C. Fault will clear if line voltage increases above 185 VAC.

Page 23

SPLIT SYSTEMS

AIR CONDITIONING AND HEA T PUMP HOMEOWNER’S ROUTINE MAINTENANCE RECOMMENDATIONS

We strongly recommend a bi-annual maintenance checkup be performed before the heating and cooling seasons begin by a qualified servicer.

Replace or Clean Filter IMPORTANT NOTE: Never operate unit without a filter installed as dust and lint will build up on internal parts resulting in loss of

efficiency, equipment damage and possible fire. An indoor air filter must be used with your comfort system. A properly maintained filter will keep the indoor coil of your comfort

system clean. A dirty coil could cause poor operation and/or severe equipment damage. Your air filter or filters could be located in your furnace, in a blower unit, or in “filter grilles” in your ceiling or walls. The installer

of your air conditioner or heat pump can tell you where your filter(s) are, and how to clean or replace them. Check your filter(s) at least once a month. When they are dirty, replace or clean as required. Disposable type filters should be

replaced. Reusable type filters may be cleaned. You may want to ask your dealer about high efficiency filters. High efficiency filters are available in both electronic and non-

electronic types. These filters can do a better job of catching small airborne particles.

Compressor

The compressor motor is hermetically sealed and does not require additional oiling.

Motors

Indoor and outdoor fan motors are permanently lubricated and do not require additional oiling.

Clean Outside Coil (Qualified Servicer Only)

Air must be able to flow through the outdoor unit of your comfort system. Do not construct a fence near the unit or build a deck or patio over the unit without first discussing your plans with your dealer or other qualified servicer. Restricted airflow could lead to poor operation and/or severe equipment damage.

Likewise, it is important to keep the outdoor coil clean. Dirt, leaves, or debris could also restrict the airflow. If cleaning of the outdoor coil becomes necessary, hire a qualified servicer. Inexperienced people could easily puncture the tubing in the coil. Even a small hole in the tubing could eventually cause a large loss of refrigerant. Loss of refrigerant can cause poor operation and/or severe equipment damage.

Do not use a condensing unit cover to “protect” the outdoor unit during the winter, unless you first discuss it with your dealer. Any cover used must include “breathable” fabric to avoid moisture buildup.

Before Calling Your Servicer

•

Check the thermostat to confirm that it is properly set. Wait 15 minutes. Some devices in the outdoor unit or in programmable thermostats will prevent compressor operation for

• awhile, and then reset automatically. Also, some power companies will install devices which shut off air conditioners for several minutes on hot days. If you wait several minutes, the unit may begin operation on its own.

Check the electrical panel for tripped circuit breakers

• or failed fuses. Reset the circuit breakers or replace fuses as necessary.

Check the disconnect switch near the indoor furnace or

• blower to confirm that it is closed.

Check for obstructions on the outdoor unit . Confirm that

• it has not been covered on the sides or the top. Remove any obstruction that can be safely removed. If the unit is covered with dirt or debris, call a qualified servicer to clean it.

Check for blockage of the indoor air inlets and outlets.

•

AVOID THE RISK OF EQUIPMENT DAMAGE OR FIRE, INSTALL

SAME AMPERAGE BREAKER OR FUSE AS YOU ARE

THE REPLACING AGAIN TO

F YOU REPEATEDLY RESET THE BREAKER OR REPLACE

THE YOU RUN THE RISK OF SEVERE EQUIPMENT DAMAGE

. IF

WITHIN THIRTY DAYS, CONTACT A QUALIFIED SERVICER

CORRECT THE PROBLEM

FUSE WITHOUT HAVING THE PROBLEM CORRECTED

THE CIRCUIT BREAKER OR FUSE SHOULD OPEN

Confirm that they are open and have not been blocked by objects (rugs, curtains or furniture).

Check the filter. If it is dirty, clean or replace it.

• Listen for any unusual noise(s), other than normal operating noise, that might be coming from the outdoor unit. If you

• hear unusual noise(s) coming from the unit, call a qualified servicer.

Page 24

Goodman Manufacturing Company , L.P. 5151 San Felipe, Suite 500, Houston, TX 77056 www.goodmanmfg.com or www.amana-hac.com

is a registered trademark of Maytag Corporation or its related companies and is used under

Goodman DSZC160241AA, DSZC160241AB, DSZC160241AC, DSZC160361AA, DSZC160361AB Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual