Goodman AVPTC183014, AVPTC313714, AVPTC426014 Installation Manual

AVPTC

AIR HANDLER
INSTALLATION INSTRUCTIONS

© 2011 - 2012 Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500, Houston, TX 77056
www.goodmanmfg.com -or- www.amana-hac.com
P/N: IO-346D Date: September 2012

THIS PRODUCT CONTAINS ELECTRONIC COMPONENTS WHICH
REQUIRE A DEFINITE GROUND. PROVISIONS ARE MADE FOR
CONNECTION OF THE GROUND. A DEDICATED GROUND FROM
THE MAIN POWER SUPPLY OR AN EARTH GROUND MUST BE
PROVIDED.

NOTICE

IFA“1F

ENCOUNTEREDONSTARTUP,VERIFYTHATTHEELECTRICHEATER

SWITCHESHAVEBEENSETTOTHEAPPROPRIATEHEATERSIZE

PAGES

AIRFLOWDELIVERY

I

NTRODUCTION

This booklet contains the installation and operating instruc­tions for your air handler. All warnings and precautions within
this booklet must be observed. Improper installation can re­sult in unsatisfactory operation or dangerous conditions and
void the warranty. Read this booklet and any instructions
packaged with accessories prior to installation. Give this book­let to the user and explain its provisions. The user should
retain this booklet for future reference.

NOTE: Upon start up in communicating mode the circuit board

will display a “1 Flash” error code on the diagnostic LED and
an “Ec” HTR TO LARGE error at the communicating display.
This is an indication that the dip switches on the control board
need to be configured in accordance with the Electric Heat­ing Airflow Table on page 13 of this manual. Configuring the
dip switches and resetting power to the unit will clear the
error code.

LASH”ERRORCODEORAN

12

AND

13

FORTHE

DIP

.

“EC”HTRTOOLARGE

ERRORIS

DIP

.SEE

SWITCHSETTINGSANDHEATERKIT





ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

NOTE: Discharge body’s static electricity before touching
unit. An electrostatic discharge can adversely affect
electrical components.

Use the following precautions during modular blower instal­lation and servicing to protect the integrated control module
from damage. By putting the modular blower, the control,
and the person at the same electrostatic potential, these steps
will help avoid exposing the integrated control module to elec­trostatic discharge. This procedure is applicable to both in­stalled and uninstalled (ungrounded) blowers.

1. Disconnect all power to the blower. Do not touch the
integrated control module or any wire connected to the
control prior to discharging your body’s electrostatic
charge to ground.

2. Firmly touch a clean, unpainted, metal surface of the
modular blower near the control. Any tools held in a
person’s hand during grounding will be discharged.

3. Service integrated control module or connecting wiring
following the discharge process in step 2. Use caution
not to recharge your body with static electricity; (i.e., do
not move or shuffle your feet, do not touch ungrounded
objects, etc.). If you come in contact with an ungrounded
object, repeat step 2 before touching control or wires.

4. Discharge your body to ground before removing a new
control from its container. Follow steps 1 through 3 if
installing the control on a blower. Return any old or
new controls to their containers before touching any
ungrounded object.

IMPORTANT NOTE TO THE OWNER REGARDING PRODUCT
WARRANTY

Your warranty certificate is supplied as a separate document
with the unit installed by your contractor. Read the limited
warranty certificate carefully to determine what is and is not
covered and keep the warranty certificate in a safe place. If
you are unable to locate the warranty certificate please con­tact your installing contractor or contact customer service
(877-254-4729) to obtain a copy.

IMPORTANT: To register your Goodman

www.goodmanmfg.com and click “Warranty Registration”.
Complete registration as prompted.

To register your Amana® brand unit, go to www.amana­hac.com and click “Warranty Registration”. Complete regis­tration as prompted.

Product limited warranty certificates for models currently in
production can be viewed at www.goodmanmfg.com or
www.amana-hac.com. If your model is not currently in pro­duction or does not appear on the website, please contact
your installing contractor or contact customer service (877­254-4729) to obtain a copy of your warranty certificate.

Each product overview page contains a Product Warranty
link; by clicking on it you will be able to view the limited war­ranty coverage for that specific product. To view warranty
registration information, click on the Product Warranty text
on the left navigation panel on the home page of each web­site. The Online Product Registration pages are located in
this same section.

®

brand unit, go to

C

HECKING PRODUCT RECEIVED

Upon receiving the unit, inspect it for damage from ship­ment. Claims for damage, either shipping or concealed,
should be filed immediately with the shipping company.
Check the unit model number, specifications, electrical char­acteristics and accessories to determine if they are correct.
In the event an incorrect unit is shipped, it must be returned
to the supplier and must NOT be installed. The manufac­turer assumes no responsibility for installation of incorrectly
shipped units.

R

EPLACEMENT PARTS

ORDERING PARTS

When reporting shortages or damages, or ordering repair
parts, give the complete unit model and serial numbers as
stamped on the unit’s nameplate.

Replacement parts for this appliance are available through
your contractor or local distributor. For the location of your
nearest distributor, consult the white business pages, the
yellow page section of the local telephone book or contact:

CONSUMER AFFAIRS

GOODMAN MANUFACTURING COMPANY, L.P.

7401 SECURITY WAY

HOUSTON, TEXAS 77040

877-254-4729

I

MPORTANT SAFETY INSTRUCTIONS

To avoid property damage, personal injury or death
due to electrical shock, this unit MUST have an
uni nt e r r u pted, un brok e n
electrical ground circuit may consist of an
appropriately sized electrical wire connecting the
ground lug in the unit control box to the building
electrical service panel.
Othe r me th o ds of groundi ng are permi t te d i f pe r fo rm ed
in accordance with the National Electric Code
(NEC)/Amer ican Natio nal Standards Inst itute
(ANSI)/Nati onal Fire Protec tion A ssocia tion (NFPA) 70
and local/state codes. In Canada, electrical grounding
is to be in ac corda n ce with t h e Canadia n El ectri c Code
(CSA) C22.1.

This product is factor y-shipped for use with
208/240/1/60 elec tric al pow er supp ly.
reconfigure th is ai r handler to operate with any other
power supply.

When installing or servicing this equipment, safety
clothing, inc lu ding hand and eye protection, is
strongly reco mmended. If installing in an area that has
special safety requirements (hard hats, etc.), observe
these req uirements.

elec trical ground. The

DO NOT

RECOGNIZE SAFETY SYMBOLS, WORDS, AND LABELS

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

WARNING

HIGHVOLTAGE!

D

ISCONNECT

ULTIPLEPOWERSOURCESMAYBEPRESENT

M

TODOSOMAYCAUSEPROPERTYDAMAGE,PERSONAL

INJURYORDEATH

ONLY 

ECHNICIAN

T

ONDITIONING

C

USETHISINFORMATION

WITHOUTSUCHBACKGROUNDMAYRESULTINPRODUCTDAMAGE

PERSONALINJURY,ORDEATH

ALL

POWERBEFORESERVICING

.

.F

AILURE



.

WARNING

INDIVIDUALSMEETINGTHEREQUIREMENTSOFAN

”,ATA

MINIMUM,ASSPECIFIEDBYTHEAIR

,H

EATINGANDREFRIGERATIONINSTITUTE

.A

TTEMPTINGTOINSTALLORREPA IRTHISUNIT

.



“E



(AHRI)

NTRYLEVEL

MAY

,

Do not connect to or use a ny dev ice that i s not design­certified by Goodman for use with this unit. Serious
property damage, personal injury, reduced unit
performance and/or hazardous conditions may result
from the use of such non-ap proved devices.

To prevent the risk of p roperty d amage, personal
injury, or death, do not stor e co mbustible materials or
use gasoline or other f lammable liquids or vapors in
the vicinity of this un it.






2

CARBON MONOX IDE POISON ING HAZ ARD

Special Warning for Installation of Furnace or Air Handling Units in
Enclosed Areas such as Garages, Utility Rooms or Parking Areas

Carbon monoxide producing devices (such as an automobile, space
heater, gas water heater, etc.) should not be operated in enclosed areas
such as unventilated garages, utility rooms or parking areas because of
the danger of carbon monoxide (CO) poisoning resulting from the exhaust
emissions. If a furnace or air handler is installed in an enclosed area such
as a garage, utility room or parking area and a carbon monoxide producing
device is operated therein, there must be adequate, direct outside
ventilation.

This ventilation is necessary to avoid the danger of CO poisoning which
can occur if a carbon monoxide producing device continues to operate in
the enclosed area. Carbon monoxide emissions can be (re)circulated
throughout the structure if the furnace or air handler is operating in any
mode.

CO can cause serious illness including permanent brain damage or death.

C

ODES

& R

EGULATIONS

B10259-216

-

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.

The United States Environmental Protection Agency
(EPA) 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 office of the
EPA.

If replacing an air handler, the system must be manufac­turer approved and Air Conditioning, Heating and Refrigera-

tion Institute (AHRI) matched. NOTE: Installation of un-

matched systems is strongly discouraged.

F

EATURES

This air handler is a part of the ComfortNet™ family of prod­ucts. It may be installed as part of a “non-communicating”
system using a standard 24 VAC thermostat. However, with
the CTK0*AA ComfortNet thermostat kit, this air handler 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.

PRE-I

NSTALLATION INSTRUCTIONS

Carefully read all instructions for the installation prior to in­stalling product. Make sure each step or procedure is un­derstood and any special considerations are taken into ac­count before starting installation. Assemble all tools, hard­ware and supplies needed to complete the installation. Some
items may need to be purchased locally. Make sure every­thing needed to install the product is on hand before start­ing.

L

OCATION

NOTE: Air handlers are designed for indoor installation
only.

Give special consideration to minimizing the length of refrig­erant tubing when installing air handlers. Refer to Remote
Cooling/Heat Pump Service Manual TP-107 Long Line Set
Application R-410A for guidelines. The unit clearance from
a combustible surface may be 0". However, service clear­ance is to take precedence. In addition allow a minimum of
24" in front of the unit for service clearance.

If the unit is located in an area with high ambient tempera­ture and/or high humidity, the air handler may be subject to
nuisance sweating of the casing. On these installations, a
wrap of 2” fiberglass insulation with a vapor barrier is rec­ommended.

Do not install the air handler in a location that violates the
instructions provided with the condenser.

Consult all appropriate regulatory codes prior to determin­ing final clearances. When installing this unit in an area that
may become wet, elevate the unit with a sturdy, non-porous
material. In installations that may lead to physical damage
(i.e. a garage) it is advised to install a protective barrier to
prevent such damage.

D

UCTWORK

This air handler is designed for a complete supply and re­turn ductwork system.

Do not operate this pro duct without all the duct work
attached.

To ensure correct system performance, the ductwork is to
be sized to accommodate 375-425 CFM per ton of cooling
with the static pressure not to exceed .5" WC. Inadequate
duct work that restricts airflow can result in improper perfor­mance and compressor or heater failure. Ductwork is to be
constructed in a manner that limits restrictions and main­tains suitable air velocity. Ductwork is to be sealed to the
unit in a manner that will prevent leakage.

RETURN DUCTWORK

DO NOT TERMINATE THE RETURN DUCTWORK IN AN
AREA THAT CAN INTRODUCE TOXIC, OR OBJECTION­ABLE FUMES/ODORS INTO THE DUCTWORK. The re­turn ductwork is to be introduced into the air handler bottom
(upflow configuration).

3

RETURN AIR FILTERS

Each installation must include a return air filter. This filtering
may be performed at the air handler or externally such as a
return air filter grille. Air handlers mounted in the downflow
orientation, including “B” series, require external filtering. A
washable filter is available as an accessory. To ensure opti­mum performance frequent filter cleaning is advised. Refer

to Air Filter Accessory table for the appropriate filter.

AVPTC Filter Number Qty Required

1830

3137
4260

E

LECTRIC HEAT

Refer to this manual in combination with the instructions pro­vided with the heat kit for the correct installation procedure.

The air handlers listed in this manual do not have factory
installed electric heat. Electric heat is available as an ac-

cessory. If installing this option, the ONLY heat kits that can

be used are the HKR series.

NOTE: The Amana
are NOT approved for use with these air handlers.

FIL 36-42

(19" x 21")

FIL 48-61

(21-1/2" x 23")

Air Filter Accessories

®

brand EHK, ECB, EDB, and EDK kits

1

1

HKR INSTALLATION

Follow instructions listed in Installation and Operating Instruc­tions shipped with the heat kit.

E

LECTRICAL SUPPLY WIRE AND

FIRE HAZARD!
To avoid the risk of property damage, personal injury
or fire, use only copper conductors.

MOP

HIGH VOLTAGE!
T o avoid prope rty dama ge , persona l injury or death
due to el ect rical shock, th is u ni t MU S T have an
uninterrupted, unbroken
electrical ground circuit may consist of an
appro pri at ely sized elec tr ical wi re co nnecting the
ground lug in the unit control box to the building
electrical service panel.
Other methods of grounding are permit ted if perform ed
in accordance with the National Electric Code
(NEC) /Americ an Nation al Standar ds Institut e
(ANSI)/National Fire Protection Association (NFP A) 70
and local/state codes. In Canada, electrical grounding
is to be in ac co rda nce w ith th e C ana dian Elec tric Cod e
(CSA) C22.1.

electrical ground. The

BUILDING ELECTRICAL SERVICE INSPECTION

This unit is designed for single-phase electrical supply. DO
NOT OPERATE ON A THREE-PHASE POWER SUPPLY.
Measure the power supply to the unit. The supply voltage

must be in agreement with the unit nameplate power re-

quirements and within the range specified below.

Power Supply V oltage

Nominal Input Minimum Voltage Maximum Voltage

208/240 187 253

WIRE SIZING

Wire size is important to the operation of your equipment.
Use the following check list when selecting the appropriate
wire size for your unit.

• Wire size must carry the Minimum Circuit Ampac-

ity (MCA).

• Refer to the NEC (USA) or CSA (Canada) for wire
sizing. The unit MCA for the air handler and the op­tional electric heat kit can be found on the unit Series
and Rating Plate.

• Wire size allows for no more than a 2% voltage

drop from the building breaker/fuse panel to the
unit.

HIGH VOLTAGE!

Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage,
personal in jury or de ath.

Refer to the latest edition of the National Electric Code
or in Canada the Canadian Electric Code when deter­mining the correct wire size. The following table shows
the current carrying capabilities for copper conductors
rated at 75oC with a 2% voltage drop. Use the table
below to determine the voltage drop per foot of vari­ous conductors.

4

Maximum Allowable Length in Feet

to Limit Voltage Drop to 2%*

Wire Size

(AWG)

14 75 50 37 NR NR NR NR NR
12 118795947NRNRNRNR
10 188 125 95 75 63 54 NR NR

8 301 201 150 120 100 86 75 68
6 471 314 235 188 157 134 118 110

*Based on NEC 1996

Minimum Circuit Ampacity (MCA)

10 15 20 25 30 35 40 45

MAXIMUM OVERCURRENT PROTECTION (MOP)

Every installation must include an NEC (USA) or CEC
(Canada) approved overcurrent protection device. Also,
check with local or state codes for any special regional re­quirements.

Protection can be in the form of fusing or HACR style circuit
breakers. The Series and Rating Plate can be used as a
guide for selecting the MAXIMUM overcurrent device.

NOTE: Fuses or circuit breakers are to be sized larger than

the equipment MCA but not to exceed the MOP.

E

LECTRICAL CONNECTIONS

Consult the local power company and local codes before
installing this unit. All wiring must be in accordance with the
National Electrical Code as well as all local codes. Knock­outs have been provided on side and top of the cabinet for
the installation of the electrical conduit. If the knockouts on
the cabinet sides are used for electrical conduit, an adapter
ring must be used in order to meet UL1995 safety require­ments. Use Minimum Circuit Ampacity and type of wire to
determine proper wire size. The unit MUST be properly
grounded. A ground lug is provided in the unit.

Check all factory connections before connecting electrical
power to unit to ensure none were loosened or disconnected
during shipping and handling.

WARNING

HIGHVOLTAGE!

TO

PREVENTPERSONALINJURYORDEATHDUETO

ELECTRICALSHOCK,DISCONNECTTHEELECTRICAL

POWERBEFOREELECTRICALLYCONNECTINGTHEUNIT

WARNING

TO

AVOIDTHERISKOFFIREOREQUIPMENTDAMAGE,USECOPPER

CONDU CTORS

.

CAUTION

TO

AVOIDTHERISKOFPERSONALINJURY,WIRINGTOTHEUNITMUST

BEPROPERLYPOLARIZEDANDGROUNDED





.





.

WARNING

ALL

WIRINGMUSTCOMPLYWITHAPPLICABLELOCALANDNATIONAL

CODES

.T

YPEANDLOCATIONOFFUSEDDISCONNECTSWITCH(ES)MUST

COMPLYWITHALLAPPLICABLECODESANDPROVIDEOVERCURRENT

PROTECTIONASSHOWNONTHENAMEPLATE

.







208/230 VOLT LINE CONNECTIONS

If heater kits will not be installed, remove the proper size
knockout for the electrical conduit connection. Connect elec­trical conduit to the unit using two washers to make an ap­proved connection.

The power supply wires must be connected to the red and
black power wiring. Two wire nuts are provided in the bag
assembly for this connection. Wrap the wire nuts with elec­trical tape. (Insulated crimp type connectors, field supplied,
may be substituted for the wire nuts and electrical tape pro­vided proper size connectors are used.) A ground wire MUST
be connected to the ground lug inside the unit.

AIR HANDLER ONLY (NON-HEAT KIT MODELS)

The building supply connects to the stripped black and red
wires contained in the air handler electrical compartment cav­ity. A ground screw is also contained in this area. Attach the
supply wires to the air handler conductors as shown in the
unit wiring diagram using appropriately sized solderless con­nectors or other NEC or CEC approved means.

AIR HANDLER WITH NON-CIRCUIT BREAKER HEAT KITS

A terminal block is provided with the HKR kit to attach the
power supply and air handler connections. Follow the HKR
Installation Manual and wiring diagram for complete wiring
details.

AIR HANDLER WITH HEAT KITS CONTAINING A CIRCUIT
BREAKER

HKR models with a “C” suffix contain a circuit breaker(s).
The air handler has a plastic cover on the access panel that
will require either one or both sections to be removed to al­low the heat kit circuit breaker(s) to be installed. See the
HKR Installation Instructions for further details. The air han­dler wires and supply wires are installed directly onto the
HKR circuit breaker(s) as shown in the HKR Installation
Manual and wiring diagram.

OPERATION ON 208 VOLT SUPPLY

The unit transformer is factory connected for 240 V opera­tion. If unit is to operate on 208 V, disconnect the red wire
from terminal 3 of the unit transformer and connect them to
terminal 2 of the unit transformer.

LOW VOLTAGE WIRING

Low voltage wiring connections are made at the top of the

cabinet. See the 24 Volt Thermostat Wiring section of this

manual for typical low voltage wiring connections. A mini­mum 18 AWG wire must be used for installations up to 100
feet.

5

24 VOLT THERMOSTAT WIRING - NON-COMMUNICATING

A

A

THERMOSTAT CONNECTIONS

NOTE: Wire routing must not interfere with the circulator
blower operation or routine maintenance.

The air handler’s integrated control module provides termi­nals for “Y1” and “Y2” and “W1” and “W2” thermostat con­nections. This allows the air handler to support the systems
shown in the table below. Refer to the following figures for
typical connections to the integrated control module. Ther­mostat wiring entrance holes are located in the top of the
blower. Wire routing must not interfere with circulator blower
operation or routine maintenance.

RCG

12RC

RC

Remote Condensing Unit

W/E

W1 W2 Y1 Y2

G

W1 Y

(Single-Stage HP)

Y1

Typical Single-Stage Cool,

O

O

O

Single-Stage Heat

Heat Pump Thermostat

DEHUM

ir Handler

Integrated Control Module

NEU

Dehumidistat

HOT

[Optional]

Typical Single-Stage Heat Pump with Auxiliary/Emergency

Heating

COOLING HEAT PUMP HEATING ELECTRIC HEATING

1-STAGE ------ 1- or 2-STAGE
2-STAGE ------ 1- or 2-STAGE
1-STAGE 1-STAGE -----­2-STAGE 2-STAGE -----­1-STAGE 1-STAGE 1- or 2-STAGE
2-STAGE 2-STAGE 1- or 2-STAGE

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 multiple wires

into a single terminal be twisted together prior to inserting
into the plug connector. Failure to do so may result in
intermittent operation.

Typical Single-Stage Cool,

Single-Stage Heat Thermostat

RCG

12RCG

RC

Remote Condensing Unit

(Single-Stage AC)

W1 Y1

W1 Y1 Y2

W2

Y

Place Jumper Between Y1

and O for Proper

Dehu mid ification Operatio n

and Proper Ramping

Prof ile Operation

Air Handler Integrated

DEHUM

O

NEU

HOT

Control Module

Dehumidistat

[Optional]

______________________________________

RCG

12RC

RC

Remote Condensing Unit

W/E

W2 Y1 Y2

W1 W2 Y1 Y2

G

W1 Y1 Y2

(Two-Stage HP)

Typical Two-Stage Cool,

O

O

O

Two-Stage Heat

Heat Pump Thermostat

DEHUM

Integrated Control Module

NEU

HOT

ir Handler

Dehumidistat

[Optional]

Typical Two Stage Heat Pump heating and Auxiliary/

Emergency Heating

24 VOLT DEHUMIDISTAT WIRING - NON-COMMUNICATING
THERMOSTAT CONNECTIONS

The optional usage of a dehumidistat allows the air handler’s
circulator blower to operate at a slightly lower speed during
a combined thermostat call for cooling and dehumidistat call
for dehumidification. This lower blower speed enhances de­humidification of the conditioned air as it passes through the
AC coil. For proper function, a dehumidistat applied to this
air handler must operate on 24 VAC and utilize a switch which

opens on humidity rise.

To install/connect a dehumidistat:

1. Turn OFF power to air handler.

Typical Single-Stage Cooling with Single-Stage Heating

______________________________________

2. Secure the dehumidistat neutral wire (typically the white
lead) to the screw terminal marked “DEHUM” on the air
handler’s integrated control module.

Typical Two-Stage Cool,

Two-Stage Heat Thermostat

RCG

W1 W2 Y1 Y2

Place Jumper Between Y1

and O for Proper

Dehumidification Operation

and Proper Ramping

Profile Operat ion

3. Secure the dehumidistat hot wire (typically the black
lead) to the screw terminal marked “R” on the air
handler’s integrated control module.

4. Secure the dehumidistat ground wire (typically the green

Air Handler I ntegrate d

12RCG

RC

Remote Condensing Unit

W1 W2 Y1 Y2

Y1 Y2

(Two-Stage AC)

DEHUM

O

NEU

HOT

Control Module

Dehumidistat

[Optional]

Typical Two-Stage Cooling with Two-Stage Heating

lead) to the ground screw on the air handler. NOTE:

Ground wire may not be present on all dehumidistats.

5. Turn ON power to air handler.

6

To enable the dehumidification function, move the dehumidi­fication dipswitch from OFF to ON. See following figure.

S7

S8

ONOFF

IMPORTANT NOTE: Sensing bulbs are not permanently

installed at the factory to prevent accidental damage
during brazing. Be sure to follow this checklist step-by­step to ensure the sensing bulb is not damaged during
installation.

Move to the ON

position to enable

dehumidification

Dipswitches - Dehumidification Enable

R

EFRIGERANT LINES

This product is factory-shipped under pressure. Follow
these instructions to prevent injury.

DEHUM

Unused

A qu en c hin g c lo th is st ro ng ly recommended to prev ent
scorching or marring of the eq uipm en t finis h whe n
welding clo s e t o the paint ed surfaces . Us e bra z ing
alloy of 5% minimum silver content.

TUBING PREPARATION

All cut ends are to be round, burr free, and clean.
Failure to follow this practice increases the chances
for refrigerant leaks. The suction line is spun closed
and requires pipe cutters to remove the closed end.

POST BRAZING

Quench all welded joints with water or a wet rag.

1. Loosen the 13/16 nut 1 TURN ONLY. No pressure loss

indicates possible leak.

2. Remove the nut and discard the cap.

3. Follow the instructions on the caution label, and remove
the two mounting screws on the lower access panel.
Then remove the lower access panel.

4. Remove the large front panel and remove the sensing
bulb from suction manifold. TO PREVENT DAMAGE
TO SENSING BULB, ENSURE BULB IS NOT NEAR
FLAME OR IN CONTACT WITH SUCTION LINE OR
MANIFOLD DURING BRAZING.

5. Use a tube cutter to remove the spin closure on the
suction line.

Excessive torque can cause orifices to stick. Use the
proper torque settings when tightening orifices.

6. Replace sensing bulb to horizontal portion of suction
line just inside cabinet. Place bulb parallel with suction
line between 10 o’clock and 2 o’clock position. Secure
bulb to line with strapping provided in literature enve­lope. Insulate sensing bulb to line with self-adhesive
insulation provided in the envelope. See the following
figures for correct bulb placement and strapping infor­mation.

PIPING SIZE

For the correct tubing size, follow the specification for
the condenser/heat pump.

SPECIAL INSTRUCTIONS

This coil comes equipped with a thermostatic expansion
valve (TXV) for refrigerant management.

IMPORTANT NOTE: Torch heat required to braze tubes of

various sizes is proportional to the size of the tube. Tubes 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. HEAT TRAP OR WET RAGS SHOULD BE
USED TO PROTECT HEAT SENSITIVE COMPONENTS
SUCH AS SERVICE VALVES AND TXV VALVES.

REFRIGERANT BULB
MUST BE POSITIONED
BETWE EN 10 & 2 O’CLOCK

REFRIGERANT BULB
MUST BE POSITIONED
BETWEEN 10 & 2 O’CLOCK

NOTE: The sensing bulb must be permanently located. A
heat shield, heat trap, or wet rag must be used during braz­ing to prevent damage to the TXV valve.

7

7. Replace access panels, suction line grommet, insula­tion and all screws.

SUCTION LINE
WITH SPIN CLOSURE

RUBBER
GROMM ET

Suction Line Grommet

A

IRFLOW CONVERSIONS

DOWNFLOW CONVERSION

Conversion to downflow MUST be performed in an area that
allows access to all sides prior to placing the air handler in
its final location. To prevent the evaporator coil pan from
“sweating”, a drain pan insulation (DPI) accessory kit is to
be used when performing this conversion. NOTE: The DPI
kit is not supplied with this product and is to be purchased

separately. See the following Drain Pan Insulation Kit table

for the correct DPI kit.

AVPTC Model Insulation Kit

RETURN AIR SIDE
OF UNIT

ACCESS
PAN EL

NOTE: The filter provision is not applicable

in THIS downf low application.

Downflow Conversion - Conversion Preparation

REAR CHANNEL
BRACKET

ZEE COIL
SUPPORT BRACKET

COIL RETAINING
BRACKET

TIE BRACKET

7. Install the zee coil supports and the wrapper stiffeners.

8. Install the tie bracket.

9. Install the rear channel bracket.

10. To prevent possible condensate “blow off” the insula­tion retainers are to be laid into the evaporator coil pan
as shown.

1830 DPI36-42/20

3137
4260

Drain Pan Insulation Kits

DPI48-61/-20

Refer to Figures Downflow Conversion - Conversion Prepa-

ration, Downflow Conversion - Insulation Retainers, and
Downflow Conversion - Conversion Completion for the lo-

cation of the components referenced in the following steps.

Figure Downflow Conversion - Conversion Preparation il-

lustrates the new installation location for the removed com­ponents.

1. Before inverting the air handler, remove all access pan­els, the coil rear channel bracket, and the filter close­off panel.

2. Remove the evaporator coil and the horizontal drain
pan. Discard horizontal drain pan.

3. Install the provided plastic plug into the vacated ac­cess panel.

4. Remove the two (2) zee coil support brackets and in­sulation retaining brackets.

3” FLAT INSULATION
RETAINER (BOTH SIDES)

Downflow Conversion - Insulation Retainers

To complete the conversion, slide the evaporator coil into
the chassis and attach the three (3) access panels.

5. Remove the tie bracket.

6. Install the DPI Insulation Kit onto the bottom of the drain
pan.

8

WRAPPER

INSULATION
JACKET

ZEE COIL
SUPPORT

WRAPPER
STIFFENER

DRAIN PAN
INSULATION KIT

Horizontal Left-Hand Conversion

1. Remove two screws beside the liquid line on the lower
access panels. Remove the (3) air handler access pan­els.

2. Remove the “J” shaped bracket that retains the evapo­rator coil.

BLOWER
ASSEMBLY

Downflow Conversion - Conversion Completion

NOTE: When converted to downflow position the coil may

protrude above the cabinet on some models.

HORIZONTAL CONVERSION

Dedicated Downflow models are not suitable for horizontal
application and must not be used for this type of installation.
The only field modification required for conversion to “Hori­zontal Right-Hand” is the removal of the plastic knockouts in
the horizontal panel drain connections. To prevent the hori­zontal drain pan from sweating in high humidity applications,
it is recommended that a horizontal drain pan insulation

(DPIH) accessory kit be used. NOTE: The DPIH insulation

kit is not supplied with this product and should be purchased

separately. See Horizontal Drain Pan Insulation Kits table

for the correct DPIH kit.

AVPTC Model Insulation Kit

1830 DPIH36-42

3. Slide out the evaporator coil and horizontal drain pan.

4. Remove the gasket from the horizontal pan drain con­nections.

5. Remove the oval shaped plastic plug from the left side
access panel. Remove the oval shaped rubber gasket
seal from the lower right side access panel.

6. The drain connections for the horizontal pan are sealed
with a thin coating of plastic. Carefully knock out this
plastic seal with a screwdriver and hammer.

Note: The
upper drain will become the secondary drain which
is mandatory in many municipalities .

7. Install the plastic plug removed in step 5 to the right
side lower access panel and the oval shaped rubber
gasket to the lower left access panel.

8. Reinstall the evaporator coil with the horizontal panel
on the left side. Note: Push the assembly completely
to the rear to ensure the engagement of the upflow pan
with the rear channel bracket.

9. Install the “J” bracket (removed in step 2) to support
the upflow pan to the tie channel.

10. Attach all panels and the metering device.

3137
4260

Horizontal Drain Pan Insulation Kits

DPIH 48-61

The following describes converting to “Horizontal Left-Hand”.
Conversion to downflow MUST be performed in an area that

allows access to all sides prior to placing the air handler in

its final location. See Horizontal Left-Hand Conversion fig-

ure below.

AVPTC MOTOR ORIENTATION

If the unit is in the upflow position, there is no need to rotate
the motor. If the unit is in the downflow position, loosen

motor mount and rotate motor as shown in the AVPTC Mo-
tor Orientation figure below. Be sure motor is oriented with

the female connections on the casing down. If the motor is
not oriented with the connections down, water could collect
in the motor and may cause premature failure.

9

A

A

FRONT VIEW

FEMALE CONNECTIONS

AVPTC Motor Orientation

C

ONDENSATE REMOVAL

SIDE VIEW

W

RNING

SOFTW

RE VER.

Field experience has shown condensate drain traps with an

TOP

open vertical Tee between the air handler and the conden­sate drain trap can improve condensate drainage in some
applications, but may cause excessive air discharge out of
the open Tee. Goodman® does not prohibit this type of
drain but we also do not recommend it due to the resulting
air leakage. Regardless of the condensate drain design used,
it is the installer’s responsibility to ensure the condensate
drain system is of sufficient design to ensure proper con­densate removal from the coil drain pan.

Drain

Connection

The coil drain pan has a primary and an optional secondary
drain with 3/4" NPT female connections. The connectors re-

Air Handler

2" MIN.

quired can be 3/4" NPT male either PVC or metal pipe and
should be hand tightened to a torque of approximately 37 in­lbs. to prevent damage to the drain pan connection. An in­sertion depth between .355 to .485 inches (3-5 turns) should

POSITIVE LIQUID
SEAL REQUIRED

AT TRAP

3" MIN.

be expected at this torque. Use the female (3/4 fpt) threaded
fitting that protrudes outside of the enclosure for external
connections.

1. Ensure drain pan hole is NOT obstructed.

2. To prevent potential sweating and dripping on to fin­ished space, it may be necessary to insulate the con­densate drain line located inside the building. Use
Armaflex® or similar material.

A Secondary Condensate Drain Connection has been pro­vided for areas where the building codes require it. Pitch the
drain line 1/4" per foot to provide free drainage. Insulate drain
lines located inside the building to prevent sweating. Install
a condensate trap to ensure proper drainage. If the second­ary drain line is required, run the line separately from the
primary drain and end it where it can be easily seen.

NOTE: Water coming from this line means the coil primary

drain is plugged and needs clearing.

Use of a condensate removal pump is permitted when nec­essary. This condensate pump should have provisions for
shutting off the control voltage should a blocked drain occur.
A trap must be installed between the unit and the conden­sate pump.

IMPORTANT NOTE: The evaporator coil is coated with oils

that may dissolve styrofoam and certain types of plastics.
Therefore, a removal pump or float switch must not contain
any of these materials.

Tip: Priming the “P” trap may avoid improper draining at the

initial installation and at the beginning of the cooling season.
When coils are installed above ceilings, or in other locations

where damage from condensate overflow may occur, it is

MANDATORY to install a field fabricated auxiliary drain pan

under the coil cabinet enclosure. Drain lines from the auxil­iary pan must be installed and terminated so that the home-

Condensate Drain Trap

owner can see water discharges.

CAUTION

A

If secondary drain is not installed, the secondary
access must be plugged.

CHIEVING

Ensure that the Neoprene gasket with PSA remains intact
on all surfaces that the access panels are secured to. These

The installation must include a “P” style trap that is located

as close as is practical to the evaporator coil. See Conden-
sate Drain Trap figure for details of a typical condensate line

“P” trap.

NOTE: Trapped lines are required by many local codes. In

the absence of any prevailing local codes, please refer to

surfaces are the entire length of the wrapper and areas be­tween the upper tie plate, upper and lower access panels.
Be sure that upper access panel breaker insert gasket is
intact and also flowrator gasket is installed on the lower ac­cess panel. An additional drain hole cover is required.

C

IRCULATOR BLOWER

the requirements listed in the Uniform Mechanical Building
Code.

A drain trap in a draw-through application prevents air from

being drawn back through the drain line during fan opera­tion thus preventing condensate from draining, and if con­nected to a sewer line to prevent sewer gases from being
drawn into the airstream during blower operation.

This air handler is equipped with a multi-speed circulator
blower. This blower provides ease in adjusting blower
speeds. The Specification Sheet applicable to your model
provides an airflow table, showing the relationship between
airflow (CFM) and external static pressure (E.S.P.), for the
proper selection of heating and cooling speeds. The heat­ing blower speed is shipped set at “21 kW”, and the cooling
blower speed is set at “D”. These blower speeds should be

10

2% L

OW LEAKAGE RATE

adjusted by the installer to match the installation require­ments so as to provide the correct electric heating CFM and
correct cooling CFM.

Use the CFM LED (green), adjacent to the integrated con­trol module electric heat connector to obtain an approximate
airflow quantity. The green CFM LED blinks once for each
100 CFM of airflow.

1. Determine the tonnage of the cooling system installed
with the air handler. If the cooling capacity is in BTU/hr
divide it by 12,000 to convert capacity to TONs.

Example: Cooling Capacity of 30,000 BTU/hr.

Tap A Tap B

OFF OFF OFF OFFON ON ON ON

S1

S2

Cooling Air flow Speed Tap (*indicates factory setting)

Normal* +10%

OFF OFF OFF OFFON ON ON ON

S1

S2

Tap C Tap D*

S1

S2

-10% Normal

S1

S2

30,000/12,000 = 2.5 Tons

2. Determine the proper air flow for the cooling system.
Most cooling systems are designed to work with air flows
between 350 and 450 CFM per ton. Most manufactur­ers recommend an air flow of about 400 CFM per ton.

Example: 2.5 tons X 400 CFM per ton = 1000 CFM

The cooling system manufacturer’s instructions must be
checked for required air flow. Any electronic air cleaners or
other devices may require a specific airflow; consult installa­tion instructions of those devices for requirements.

3. Knowing the air handler model, locate the high stage
cooling air flow charts in the Specification Sheet appli­cable to your model. Look up the cooling air flow de­termined in step 2 and find the required cooling speed
and adjustment setting.

Example: An AVPTC183014 air handler installed with

a 2.5 ton air conditioning system. The air flow needed
is 1000 CFM. Looking at the cooling speed chart for
AVPTC183014, find the air flow closest to 1000 CFM.
A cooling airflow of 1000 CFM can be attained by set­ting the cooling speed to “C” and the adjustment to “0”
(no adjustment).

S3

S4

Air flow Adjust Taps (*indicates factory setting)

S3

S4

S3

S4

S3

S4

Dipswitches - Cooling Airflow and Airflow Adjust Taps

6. The multi-speed circulator blower also offers several
custom ON/OFF ramping profiles. These profiles may
be used to enhance cooling performance and increase
comfort level. The ramping profiles are selected using

DIP switches 5 and 6. Refer to the following Dipswitches

- Cooling Airflow Ramping Profiles figure for switch po-

sitions and their corresponding taps. Refer to the bullet
points below for a description of each ramping profile.
Verify profile selection by counting the green CFM LED
blinks and timing each step of the ramping profile.

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

OFF

100% CFM 100% CFM

1 min

OFF

4. Locate the blower speed selection DIP switches on the
integrated control module. Select the desired “cooling”
speed tap by positioning switches 1 and 2 appropri­ately. Select the desired “adjust” tap by positioning
switches 3 and 4 appropriately. Refer to the following

Dipswitches - Cooling Airflow and Airflow Adjust Taps

figure for switch positions and their corresponding taps.
Verify CFM by counting the number of times the green
CFM LED blinks.

5. Continuous fan speed is 30% of the air handler’s maxi­mum airflow capability.

Example: If the air handler’s maximum airflow capabil-

ity is 2000 CFM, the continuous fan speed will be 0.30
x 2000 CFM = 600 CFM.

• 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

100% CFM

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

11

OFF

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

Tap A Tap B Tap C Tap D*

OFF OFF OFF OFFON ON ON ON

S5

S6

S5

S6

S5

S6

Dipswitches - Cooling Airflow Ramping Profiles

S5

S6

OFF

7. If an electric heater kit has been installed, determine
the heater kilowatt (kW) rating. Find the heater size in
the table below. Set dip switches 9, 10, and 11 for the

installed heater as shown in the Dipswitches - Electric
Heat Airflow figure below. The adjust setting (already

established by the cooling speed selection) also ap­plies to the electric heater kit airflow. Thus, the electric
heater airflow is adjusted by the same amount. Verify
selected CFM by counting the green CFM LED blinks.

ELECTRIC HEAT TEMPERATURE RISE:

The heating mode temperature rise is dependent upon the
system airflow, the supply voltage, and the heat kit size (kW)
selected. Use the supply voltage/temperature rise tables

below to determine the temperature rise (

º

F).

CFM

HEAT KIT NOMINAL kW

3 5 6 8 10152021

60018283541

8001321263142
1000 11 17 21 25 34 50
1200 9 14 18 21 28 42 56 62
1400 8 12 15 18 24 36 48 53
1600 7 10 13 15 21 31 42 46
1800 6 9 12 14 19 28 37 41
2000 5 8 11 12 17 25 34 37

230/1/60 Supply Voltage - Temperature Rise Table °F

CFM

3 5 6 8 10152021

HEAT KIT NOMINAL kW

600 17 27 34 39

800 13 20 25 30 40

1000 10 16 20 24 32 48
1200 8 13 17 20 27 40 53 59
1400 7 11 14 17 23 34 46 51
1600 6 10 13 15 20 30 40 44
1800 6 9 11 13 18 27 36 39
2000 5 8 10 12 16 24 32 35

220/1/60 Supply Voltage - Temperature Rise Table °F

CFM

356810152021

HEAT KIT NOMINAL kW

600 16 25 32 37

800 12 19 24 38 38

1000 10 15 19 22 30 46
1200 8 13 16 19 25 38 51 56
1400 7 11 14 16 22 33 43 48
1600 6 9 12 14 19 28 38 42
1800 5 8 11 12 17 25 34 37
2000 5 8 10 11 15 23 30 34

208/1/60 Supply Voltage - Temperature Rise Table °F

21 kW* 20 kW

OFF OFF OFF OFFON ON ON ON

S9

S10

S11

S9

S10

S11

15 kW 10 kW

S9

S10

S11

S9

S10

S11

8 kW 6 kW 5 kW 3 kW

OFF OFF OFF OFFON ON ON ON

S9

S10

S11

S9

S10

S11

S9

S10

S11

S9

S10

S11

Electric Heating Air Flow (*indicates factory setting)

NOTE: Upon start up in communicating mode the circuit board will display a “1 Flash” error code on the diagnostic LED

and an “Ec” HTR TO LARGE error at the communicating display. This is an indication that the dip switches on the control
board need to be configured in accordance with the Electric Heating Airflow Table on the following page of this manual.
Configuring the dip switches and resetting power to the unit will clear the error code.

12

NOTE: For installations not indicated in the preceding

Temperature Rise Tables, the following formula is to be used:

TR = (kW x 3412) x (Voltage Correction) x (1.08 x CFM)

Where: TR = Temperature Rise
kW = Heater Kit Actual kW
3412 = Btu per kW
Voltage Correction =.96 (230 Supply Volts)

=.92 (220 Supply Volts)
=.87 (208 Supply Volts)

1.08 = Constant
CFM = Measured Airflow

NOTE: The Temperature Rise Tables can also be used to

determine the air handler airflow delivery. When using these
tables for this purpose set the room thermostat to maximum
heat and allow the system to reach steady state conditions.
Insert two thermometers, one in the return air and one in the
supply air. The temperature rise is the supply air temperature
minus the room air temperature.
Use HKR specification sheets to determine the HKR avail­able for a given air handler.

Speed Selection Dip Switches

Cool
Selection
Switches

Tap 1 2

AOFFOFF

BONOFF
COFFON

DONON

TO SET AIRFLOW:

1.Select appropriate model from Cooling/Heat P ump Airflow Table.
Based on desired Ai rflow for your application select c orresponding tap
(A,B,C or D). Set dip switches 1 & 2 to the appropriate ON/O FF
positions.

2. Select appropr iate Airflow adjustme nt factor for appli cation
(0%. +10%, -10%) . Set dip switches 3 & 4 to the appropria te ON/OFF
positions.

If installed with Heater Kit:

3.
Using Electric Heat Airflow Table, set di p switches 9, 10 and 11 t o the
appropriate ON/OFF positions ba sed on Heater kit installed.

If installed without Heater Kit:

Ensure dip switches 9, 10 and 11 are set to a valid heater kit selecti on.
Example: The only valid heat er kits for AVPTC183014* applic ations
are 3, 5, 6, 8 and 10 kW.

Failure to do so will result in a Heater Kit er ror code.

TO SET COMFORT MODE:

Select desired Comfort Mode profile (see profil es above). Set switches
5 and 6 to the appropriate ON/OFF position s.

Profiles 5 6

Pre-Run Short-Ru n Off Delay

AOFFOFF

BONOFF

COFFON

DONON

------- ------- 60 sec/100%

------- 30 sec/50% 60 sec/100%

------- 7.5 mins/82% 60 sec/100%

30 sec/50% 7.5 mins/82% 30 sec/50%

TRIM

0%

+ 10%

- 10%

0%

Ad ju st
Selection
Switches

34

OFF OFF

ON OFF

OFF ON

ON ON

Sel ec t io n
Switches

Profile

AVPTC183014*

AVPTC313714*

AVPTC426014*

NOTE: Airfl ow dat a s hown app lies t o no n- com munic at ing m ode ope rat ion onl y. For a fully
commu nic at in g syste m, plea se see the ou tdoor unit 's ins tall at ion instr uctions for c oo lin g and heat
pump airflow data. S ee C o m fortNe t™ System - Ai r flow Cons id er ation sec tion for detail s.

Htr k W 9 10 11

3 ONONON630610600
5 ON O N O FF 7 30 710 680
6 ON O FF O N 8 40 840 790

8 ON O FF O FF 108 0 1060 99 0
10 OFF ON ON 1270 1260 1190

15 OFF O N OFF NR 14 7 0 13 90
20 OFF OFF ON NR NR 1580

21 OFF OFF OFF NR NR 1580

NOTE: Airfl ow dat a s hown app lies t o t he e me rg ency hea t mode ( elec tric heat onl y) in eit her non­commu nicatin g mod e operat ion or full y com mun icat ing m ode oper ation.

Cooling/Heat Pump Airflow Table

Model

Tap

A 420 630
B 560 840
C 700 10 40
A 410 610
B 560 830
C 700 10 40
D 830 12 40
A 810 12 10
B 940 14 10
C10501560
D12101800

Electr ic He at Airflow Tabl e

AVPTC

183014*

Low

Stage

Coo l

AVPTC

313714*

High

Stage

Cool

AVPTC

426014*

NOTE: Airflow blink codes are approximations of actual airflow.

Heat Kit Selection

MODELS HKR-03* HKR-05*/-05C* HKR-06* HKR-08*/-08C* HKR-10*/-10C* HKR-15C# HKR-20C# HKR-21C*

AVPTC183014A* X X X

AVPTC313714A* X X X

AVPTC426014A* X X X X X X

* Revision level that may or may not be designated.

C Circuit breaker option.

# Indicates Model A or Model B. Model A is 208V only and Model B is 240V only.

NOTE:
When 8kW and 10kW heat kits are used with an AVPTC1830 and AVPTC3137, matched with 2- ton outdoor unit, see Note 1 below.

1

Set Heater Kit dip switches 9, 10 and 11 to 6kW setting (9-ON, 10-OFF,11-ON) to obtain 840 CFM.

2

This heater kit can only be used for ‘1000 CFM or higher’ applications.

3

This heater kit can only be used for ‘1200 CFM or higher’ applications.

1

X

1

X

1

X

1

X

--- --- ---

2

X

--- ---

3

X

13

3

X

T

ROUBLESHOOTING

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

NOTE: Discharge body’s static electricity before touching

unit. An electrostatic discharge can adversely affect electrical
components.
Use the following precautions during air handler installation
and servicing to protect the integrated control module from
damage. By putting the air handler, the control, and the
person at the same electrostatic potential, these steps will
help avoid exposing the integrated control module to elec­trostatic discharge. This procedure is applicable to both in­stalled and uninstalled (ungrounded) blowers.

1. Disconnect all power to the blower. Do not touch the
integrated control module or any wire connected to the
control prior to discharging your body’s electrostatic
charge to ground.

FAULT RECALL

The integrated control module is equipped with a momen­tary push-button switch that can be used to display the last
six faults on the red diagnostic LED. 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 LED display 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.

NOTE: Consecutively repeated faults are displayed a

maximum of three times. Example: A clogged return air filter
causes the air handler’s motor to repeatedly enter a limiting
condition. The control will only store this fault the first three

consecutive times the fault occurs.

C

OMFORTNET

™ S

YSTEM

2. Firmly touch a clean, unpainted, metal surface of the
modular blower near the control. Any tools held in a
person’s hand during grounding will be discharged.

3. Service integrated control module or connecting wiring
following the discharge process in step 2. Use caution
not to recharge your body with static electricity; (i.e., do
not move or shuffle your feet, do not touch ungrounded
objects, etc.). If you come in contact with an un­grounded object, repeat step 2 before touching control
or wires.

4. Discharge your body to ground before removing a new
control from its container. Follow steps 1 through 3 if
installing the control on a blower. Return any old or
new controls to their containers before touching any
ungrounded object.

DIAGNOSTIC CHART

WARNING

HIGHVOLTAGE!

TO

AVOIDPERSONALINJURYORDEATHDUETO

ELECTRICALSHOCK,DISCONNECTELECTRICALPOWER

BEFOREPERFORMINGANYSERVICEORMAINTENANCE

Refer to the Troubleshooting Chart at the end of this manual

for assistance in determining the source of unit operational
problems. The red diagnostic LED blinks to assist in trouble­shooting the unit. The number of blinks refers to a specific
fault code.





.

OVERVIEW

The ComfortNet system is a system that includes a
ComfortNet compatible air handler and air conditioner or heat
pump with a CTK0*AA thermostat. Any other system con­figurations are considered invalid ComfortNet systems and
must be connected as a traditional (or non-communicating)

system (see Electrical).

A ComfortNet heating/air conditioning system differs from a
non-communicating/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 VAC
signals. It is a one-way communication path in that the in­door and outdoor units 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
path. The thermostat still sends commands to the indoor
and outdoor units. However, the thermostat may also re­quest and receive information from both the indoor and out­door units. This information may be displayed on the
ComfortNet thermostat. The indoor and outdoor units also
interact with one another. The outdoor unit may send com­mands to or request information from the indoor unit. This
two-way digital communications between the thermostat and
subsystems (indoor/outdoor unit) and between subsystems
is the key to unlocking the benefits and features of the
ComfortNet system.

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

14

AIRFLOW CONSIDERATION

Airflow demands are managed differently in a fully commu­nicating system than they are in a non-communicating 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

Air Conditioner +

Air Hand ler

He a t Pu m p + A ir

Ha ndl er

System Operating

Mode

Cooling Air Conditio ner

Heating Air Handler

Cont inu ous Fan The rmos t at

Cooling Heat Pump

He at P ump Heat ing

On ly

HP + Electric Heat

Strips

Elect ric Heat Str ips

On ly

Cont inu ous Fan The rmos t at

Air flow De ma nd S ourc e

Heat Pump

> of Heat Pump or Air

Handler Demand

Air Handler

In continuous fan mode, the CTK0*AA thermostat provides
the airflow demand. The thermostat may be configured for a
low, medium, or high continuous fan speed. The low, medium,
and high fan speeds correspond to 25%, 50% and 75%,
respectively, of the air handlers’ maximum airflow capability.
During continuous fan operation, the thermostat sends a fan
request along with the continuous fan demand to the air
handler. The air handler, in turn, sends the demand to the
ECM motor. The ECM motor delivers the requested
continuous fan airflow.

CTK0*AA WIRING

NOTE: Refer to section Electrical Connections for 208/230
volt line connections to the air handler.

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 multiple wires
into a single terminal be twisted together prior to inserting
into the plug connector. Failure to do so may result in
intermittent operation.

Typical 18 AWG thermostat wire may be used to wire the
system components. One hundred (100) 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 four 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 VAC hot) and “C” (24 VAC common).

12RC

CTK0*AA
Thermostat

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. See the applicable ComfortNet air conditioner or
heat pump installation manual for the airflow delivered
during cooling or heat pump heating.

12RC

ComfortNet™ Compatible
Air Handler
Integrated Control Module

12RC

System Wiring Using Four-Wires

ComfortNet Compatible AC/HP
Integrated Control Module

TWO-WIRE OUTDOOR, FOUR-WIRE INDOOR WIRING

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
40VA, 208/230 VAC to 24 VAC transformer must be installed
in the outdoor unit to provide 24 VAC power to the outdoor
unit’s electronic control. The transformer is included with
the CTK0*AA kit. See kit instructions for mounting and wir­ing instructions. Four wires are required between the indoor
unit and thermostat.

15

Optional

40VA Transformer

(included in

CTK0*AA kit)

208/230 VAC

24 VAC

12RC

12RC

12RC

CTK0*AA
Thermostat

ComfortNet
Air Handler Integrated
Control Module

ComfortNet
AC/HP Integrated
Control Module

Compatible

Compatible

• 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.

System Wiring using Two-Wires between Air Handler and

AC/HP and Four-Wires between Air Handler and Thermostat

COMFORTNET™ SYSTEM ADVANCED FEATURES

Refer to the communicating thermostat installation manual
for information on accessing advanced features and menus.

DIAGNOSTICS

Accessing the air handler’s diagnostics menu provides ready
access to the last six faults detected by the air handler. Faults
are stored most recent to least recent. Any consecutively
repeated fault is stored a maximum of three times. Example:
A clogged return air filter causes the air handler’s motor to
repeatedly enter a limiting condition. The control will only

store this fault the first three consecutive times the fault oc-

curs. Navigate to the diagnostics menu as described above

in Accessing and Navigating the Advanced Features Menus.
NOTE: It is highly recommended that the fault history be

cleared when performing maintenance or servicing the air

handler.

NETWORK TROUBLESHOOTING
NOTE: Indoor Unit BIAS and TERMINATION Dipswitches

are factory set and should not be changed.

SYSTEM TROUBLESHOOTING

NOTE: Refer to the instructions accompanying the

ComfortNet compatible outdoor AC/HP unit for
troubleshooting information.

Refer to the Troubleshooting Chart at the end of this manual

for a listing of possible air handler error codes, possible
causes and corrective actions.

S

TART-UP PROCEDURE

• Prior to start-up, ensure that all electrical connections
are properly sized and tightened.

• All panels must be in place and secured. For Air Tight
application, neoprene gasket must be positioned at
prescribed locations to achieve 2% leakage.

• Tubing must be leak free.

• Unit should be elevated, trapped and pitched to allow
for drainage.

• Low voltage wiring is connected.

• Auxiliary drain is installed when necessary and pitched
to allow for drainage.

BIAS

BIAS

TERM

ONOFF

S2

S1

S3

Dipswitches - Indoor Unit BIAS and TERMINATION

The ComfortNet system is a fully communicating system,
and thus, constitutes a network. Occasionally the need to
troubleshoot the network may arise. The integrated air han­dler control 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. Refer

to the Communications Troubleshooting Chart at the end of

this manual for error codes, possible causes and corrective
actions

• Drain pan and drain tubing has been leak checked.

• Return and supply ducts are sealed.

• Unit is elevated when installed in a garage or where
flammable vapors may be present.

• Unit is protected from vehicular or other physical dam­age.

• Return air is not obtained from any areas where there
may be objectionable odors, flammable vapors or prod­ucts of combustion such as carbon monoxide (CO),
which may cause serious personal injury or death.

16

R

EGULAR MAINTENANCE

HIGH VOLTA GE!
Disconnect ALL power before servicing or
installing this unit. Multiple power sources may
be present. Failure to do so may cause property
damage, personal injury or death.

The only item to be maintained on a regular basis by the
user is the circulating air filter(s). Filter should be cleaned or
replaced regularly. A certified service technician must per­form all other services.

NOTE: THESE INSTRUCTIONS ARE SPECIFICALLY FOR
AVPTC MODELS. DO NOT USE THESE DIAGRAMS FOR

ANY OTHER MODELS. SEE SEPARATE INSTALLATION
AND OPERATING INSTRUCTIONS FOR ATUF, ARUF,
ARPT, ADPF, AND ASPF MODELS.

NOTICE: THIS PRODUCT CONTAINS ELEC-

TRONIC COMPONENTS WHICH REQUIRE A DEFI­NITE GROUND. PROVISIONS ARE MADE FOR
CONNECTION OF THE GROUND. A DEDICATED
GROUND FROM THE MAIN POWER SUPPLY OR
AN EARTH GROUND MUST BE PROVIDED.

17

AIR HANDLER ADVANCED FEATURES MENUS

)

CONFIGURATION

Subm e nu Item Indication (for Displa y Only; not Use r Modifiabl e)

Electric Heat Size (HTR KW ) Displays the size in kW of the selected electric heaters.

Motor HP (1/2, 3/4, or 1 MTR HP) Displays the air handler indoor blower motor horsepower.

Heat ON Delay (HT ON) Displays the electric heat indoor blower ON delay.

Heat OFF Delay (HT OFF) Display s the electric heat indoor blower OFF delay.

DIAGNOSTICS

Sub m enu It em In dicat i on/U s er Modifiabl e Optio ns Com m en ts

Fault 1 (FAULT #1) Most recent fault For display only

Fault 2 (FAULT #2) Next most recent fault For display only

Fault 3 (FAULT #3) Next most recent fault For display only

Fault 4 (FAULT #4) Next most recent fault For display only

Fault 5 (FAULT #5) Next most recent fault For display only

Fault 6 (FAULT #6) Least recent fault For display only
Clear Fault History (CLEAR) NO or YES Selecting “ YES” clears the fault

history

NOTE:

Consecutively repeated faults are shown a maximum of 3 times

IDENTIFIC ATION

Submenu Item Indication (for Display Only; not Use r Modifiable)

Model Number (MOD NUM) Displays the air handler model number

Serial Number (SER NUM) Displays the air handler serial number (Optional)
Software (SOFTWARE) Displays the application software revision

SET-UP

Submenu Item U ser Modifiable Option s Comments

Heat Airflow Trim (HT
TRM

Subm e nu Item Indication (for Displa y Only; not Use r Modifiable )

Mode (MODE) Displays the current air handler operating mode

CFM (CFM) Displays the airflow for the current operating mode

-10% to +10% in 2% increments,
default is 0%

STATUS

Trims the electric heating airflow by the
selected amount.

18

COMMUNICATIONS TROUBLESHOOTING CHART

LED LED

Red

Communications

LED

2 Flashes

1 Steady

Green Receive

LED

Flashing
On Solid

Status

Off

1 Flash

Off

Flash

Rapid

Indication Possible Causes Corrective Action(s) Notes & Cautions

x Normal condition x None x None x None
x Communications

Failure

x Out-of-box reset x Control power up

x No power
x Communications

error

x No network found x Broken/ disconnected

x Normal network

traffic

x Data 1/ Data 2

miss-wire

x Communications

Failure

x Learn button

depressed

x No power to air

handler

x Open fuse
x Communications error

data wire(s)

x Air handler is installed

as a non­communicating/
traditional system

x Control is “talking” on

network as expected

x Data 1 and data 2

wires reversed at air
handler, thermostat,
or ComfortNet™
compatible outdoor
AC/HP

x Short between data 1

and data 2 wires

x Short between data 1

or data 2 wires and R
(24VAC) or C (24VAC
common)

x Depress Learn Button
x Verify that bus BIAS

and TERM
dipswitches are in the
ON position.

x None x None

x Check fuses and

circuit breakers;
replace/reset

x Replace blown fuse
x Check for shorts in

low voltage wiring in
air handler/system

x Reset network by

depressing learn
button

x Check data 1/ data 2

voltages

x Check

communications
wiring (data 1/ data 2
wires)

x Check wire

connections at
terminal block

x Verify air handler

installation type (non­communicating/
traditional or
communicating)

x Check data 1/ data 2

voltages

x None x None

x Check

communications
wiring (data 1/ data 2
wires)

x Check wire

connections at
terminal block

x Check data 1/ data 2

voltages

x Depress once

quickly for a power­up reset

x Depress and hold

for 2 seconds for
an out-of-box reset

x Turn power OFF

prior to repair

x Turn power OFF

prior to repair

x Verify wires at

terminal blocks are
securely twisted
together prior to
inserting into
terminal block

x Verify data1 and

data voltages as
described above

x Turn power OFF

prior to repair

x Verify wires at

terminal blocks are
securely twisted
together prior to
inserting into
terminal block

x Verify data1 and

data voltages as
described above

19

T

ROUBLESHOOTING

Notes & Cautions

C

HART

Corrective Actions

Possible Causes

ComfortNet ™

Thermostat Only

x Normal operation x None x Normal operation

None None

Message Code

model.

x Turn power OFF prior to repair.

x Use memory card for the specific

settings

x Verify electric heat dipswitch

x Verify the installed electric

dipswitches is too large for heater

kits in shared data set

x Heater kit selected via

Ec

LARGE

HTR TOO

turning power ON. Memory card

x Insert memory card BEFORE

heater is valid for the air handler.

Check nameplate or

model.

turning power ON. Memory card

may be removed after data is

loaded.

memory card.

may be removed after data is

loaded.

memory card.

data is loaded.

x Turn power OFF prior to repair.

x Use memory card for the specific

settings

x Verify electric heat dipswitch

x Verify the installed electric

dipswitches is too small for heater

kits in shared data set

x Heater kit selected via

Ec

SMALL

HTR TOO

x Insert memory card BEFORE

heater is valid for the air handler.

x Turn power OFF before removing

x Error code will be cleared once

Specification Sheet applicable to

your model* for allowable heater

kit(s).

for the specific model. Re-

populate data using correct

memory card if required.

x Verify shared data set is correct

x

Check nameplate or

Specification Sheet applicable to

your model* for allowable heater

kit(s).

x Turn power OFF before removing

x Verify shared data set is correct

for the specific model. Re-

populate data using correct

x Error code will be cleared once

memory card if required.

data is loaded.

x Turn power OFF prior to repair.

x Verify electric heat dipswitch

x Heater kit selected via

Ec

NO HTR

model.

x Use memory card for the specific

x Insert memory card BEFORE

settings

heater is valid for the air handler.

x Verify the installed electric

dipswitches is doesn’t match

heater kits in shared data set

MATCH

turning power ON. Memory card

Check nameplate or

may be removed after data is

loaded.

memory card.

data is loaded.

x Turn power OFF before removing

x Error code will be cleared once

Specification Sheet applicable to

your model* for allowable heater

kit(s).

for the specific model. Re-

populate data using correct

x Verify shared data set is correct

x Turn power OFF prior to repair.

x Replace fuse with 3-amp

voltage wiring

memory card if required.

x Short in low voltage wiring x Locate and correct short in low

Not

Displayed

Not

Displayed

automotive type

module fuse with 3A automotive

fuse.

x Turn power OFF prior to repair.

x Replace integrated control

power to air handler and

integrated control module.

x Assure 208/230 volt and 24 volt

x Check integrated control module

24 volt wire improperly

connected or loose

x Manual disconnect switch OFF or

x Blown fuse or circuit breaker

EE

FAULT

INTERNAL

x Replace integrated control

fuse (3A). Replace if necessary.

x Integrated control module has an

module with correct replacement

x Check for possible shorts in

internal fault

part

x Read precautions in “Electrostatic

208/230 volt and 24 volt circuits.

Repair as necessary.

Discharge” section of manual.

module.

x Replace bad integrated control

Fault Description

LED Codes

Diagnostic/Status

Symptoms of Abnormal Operation

(Communicating & Non-communicating

dipswitches is too large

for heater kits specified

x Normal operation

x Heater kit selected via

in shared data set

x Heater kit selected via

dipswitches is too small

for heater kits specified

in shared data set

x Heater kit selected via

dipswitches does not

heater kits specified in

shared data set

x Open Fuse

to air handler or no 24

volt power to integrated

control module

breaker

module has an internal

x No 208/230 volt power

x Blown fuse or circuit

fault.

x Integrated control

ON

1 Flash

1 Flash

1 Flash

5 Flashes

None

Thermostat)

W1 or Auxiliary/Emergency heat

provides the indicated error code.

icon illuminated

x LED display is ON continuously

x Electric heaters fail to energize on a call for

x Integrated control module LED display

x ComfortNet thermostat “Call for Service”

Handler” message

x ComfortNet thermostat scrolls “Check Air

x Electric heat airflow is higher than

expected on a call for W1 or

Auxiliary/Emergency heat

provides the indicated error code.

x Integrated control module LED display

x Electric heat airflow is higher than

expected on a call for W1 or

Auxiliary/Emergency heat

provides the indicated error code.

x Integrated control module LED display

provides the indicated error code.

Power”

provides no signal.

icon illuminated

x No air handler operation.

x Integrated control module LED display

x ComfortNet thermostat displays “Battery

x Air handler fails to operate

x Integrated control module LED display

x ComfortNet thermostat “Call for Service”

Handler” message

x ComfortNet thermostat scrolls “Check Air

20

T

ROUBLESHOOTING

C

HART

Notes & Cautions

repair

specific model.

BEFORE turning power

ON. Memory card may be

removed after data is

loaded.

x Turn power OFF prior to

x Use memory card for the

x Insert memory card

x Turn power OFF before

removing memory card.

x Error code will be cleared

repair

specific model.

BEFORE turning power

ON. Memory card may be

removed after data is

loaded.

removing memory card.

once data is loaded.

x Turn power OFF prior to

x Use memory card for the

x Insert memory card

x Turn power OFF before

x Error code will be cleared

once data is loaded.

Corrective Actions

for the specific model. Re-

populate data using correct

x Populate shared data set using

memory card.

memory card if required.

x Verify shared data set is correct

Possible Causes

has been rejected by integrated

shared data.

x Air handler does not contain any

d0

x Shared data set on memory card

d4

control module

ComfortNet ™

Thermostat Only

Fault Description

LED Codes

Diagnostic/Status

Message Code

Thermostat)

DATA

NO NET

x Data not yet on network.

9 Flashes

INVALID

MC DATA

data.

x Invalid memory card

11 Flashes

Symptoms of Abnormal Operation

provides indicated error code.

icon illuminated.

(Communicating & Non-communicating

x Air handler fails to operate.

x Integrated control module LED display

x ComfortNet thermostat “Call for Service”

Handler” message.

x ComfortNet thermostat scrolls “Check Air

operation.

provides indicated error code.

icon illuminated.

x Operation different than expected or no

x Integrated control module LED display

x ComfortNet thermostat “Call for Service”

Handler” message.

x ComfortNet thermostat scrolls “Check Air

21

T

ROUBLESHOOTING

C

HART

Notes & Cautions

repair

with correct replacement

x Replace circulator motor

part.

x Turn power OFF prior to

x Turn power OFF prior to

repair

with correct replacement

part.

x Replace circulator motor

x Replace integrated control

module with correct

replacement part.

x Turn power OFF prior to

repair

replacement part.

x Replace motor with correct

x Use memory card for the

specific model

x Insert memory card

BEFORE turning power

ON. Memory card may be

removed after data is

loaded.

removing memory card.

x Turn power OFF before

x Error code will be cleared

once shared data and

motor horse power match.

x Turn power OFF prior to

repair.

x Turn power OFF prior to

repair.

Corrective Actions

connection.

Replace if necessary.

connection.

x Tighten or correct wiring

Replace if necessary.

x Check circulator blower motor.

x Tighten or correct wiring

Replace if necessary.

x Check circulator blower motor.

x Check integrated control module.

x Verify circulator blower motor

horse power is the same

specified for the specific air

handler model. Replace is

necessary.

for the specific model. Re-

populate data using correct

memory card if required.

x Verify shared data set is correct

x Check filters for blockage.

Clean filters or remove

obstruction.

Remove obstruction. Verify all

registers are fully open.

sized for system. Resize/replace

ductwork if necessary.

installation requirements.

grills/registers, duct system, and

air handler/coil air inlet/outlet for

x Check ductwork for blockage.

x Verify ductwork is appropriately

x See "Installation Instructions" for

blockages.

x Check filters, filter

Possible Causes

b1

circulator motor control leads.

x Loose wiring connection at

x Failed circulator blower motor.

x Failed integrated control module.

circulator motor power leads or

circulator motor power leads

disconnected.

x Loose wiring connection at

b0

x Failed circulator blower motor.

b2

x Incorrect circulator blower motor

in air handler.

integrated control module.

x Incorrect shared data set in

x Blocked filters.

b3

change in speed or torque, sudden

blockage of air handler/coil air

inlet or outlet.

filters, very restrictive ductwork,

blockage of air handler/coil air

x Restrictive ductwork.

x Undersized ductwork.

x High ambient temperatures.

x Abnormal motor loading, sudden

b4

inlet or outlet.

x High loading conditions, blocked

ComfortNet ™

Thermostat Only

Fault Description

LED Codes

Diagnostic/Status

Message Code

Thermostat)

MOTOR

NOT RUN

is not running when it

should be running.

x Circulator blower motor

6 Flashes

COMM

MOTOR

module has lost

communications with

x Integrated control

6 Flashes

circulator blower motor.

MOTOR

MISMATCH

horse power in shared

data set does not match

x Circulator blower motor

6 Flashes

circulator blower motor

LIMITS

MOTOR

horse power.

x Circulator blower motor

6 Flashes

is operating in a power,

temperature, or speed

limiting condition.

TRIPS

MOTOR

senses a loss rotor

control.

x Circulator blower motor

6 Flashes

x Circulator blower motor

senses high current.

Symptoms of Abnormal Operation

provides indicated error code.

icon illuminated.

Handler” message.

provides indicated error code.

icon illuminated.

(Communicating & Non-communicating

x Air handler fails to operate.

x Integrated control module LED display

x ComfortNet thermostat “Call for Service”

x ComfortNet thermostat scrolls “Check Air

x Air handler fails to operate.

x Integrated control module LED display

x ComfortNet thermostat “Call for Service”

Handler” message.

x ComfortNet thermostat scrolls “Check Air

provides indicated error code.

icon illuminated.

x ComfortNet thermostat “Call for Service”

Handler” message.

x ComfortNet thermostat scrolls “Check Air

x Air handler fails to operate.

x Integrated control module LED display

performance.

x Air handler operates at reduced

provides b3 error code.

x Airflow delivered is less than expected.

x Integrated control module LED display

provides indicated error code.

icon illuminated.

x ComfortNet thermostat “Call for Service”

Handler” message.

x ComfortNet thermostat scrolls “Check Air

x Air handler fails to operate.

x Integrated control module LED display

22

T

ROUBLESHOOTING

C

HART

Notes & Cautions

repair

replacement part.

x Turn power OFF prior to

x Replace motor with correct

x Replace wheel with correct

replacement part.

x Turn power OFF prior to

repair.

x Turn power OFF prior to

repair.

replacement part(s).

x Replace with correct

x Use memory card for the

repair.

specific model.

x Turn power OFF prior to

Corrective Actions

Verify line voltage to blower is

within the range specified on the

air handler rating plate.

obstructions. Remove and

repair/replace wheel/motor if

necessary.

shaft rotation and motor.

Replace motor if necessary.

x Check circulator blower for

x Check power to air handler.

x Check circulator blower motor

installation requirements.

Verify control is populated with

correct shared data set. See data

x See "Installation Instructions" for

errors above for details.

x Check integrated control module.

x Check for locked rotor condition

(see error code above for

details).

x Check filters for blockage.

Clean filters or remove

obstruction.

Remove obstruction. Verify all

registers are fully open.

sized for system. Resize/replace

x Check ductwork for blockage.

ductwork if necessary.

x Verify ductwork is appropriately

Possible Causes

handler.

b6

handler.

x High AC line voltage to air

x Low AC line voltage to air

x High ambient temperatures.

x Error with integrated control

b7

module.

condition.

x Motor has a locked rotor

b9

x Blocked filters.

x Restrictive ductwork.

x Undersized ductwork.

housing.

bearings.

x Obstruction in circulator blower

x Seized circulator blower motor

x Failed circulator blower motor.

b5

ComfortNet ™

Thermostat Only

Fault Description

LED Codes

Diagnostic/Status

Symptoms of Abnormal Operation

(Communicating & Non-communicating

ROTOR

Message Code

MTR LCKD

fails to start 10

x Circulator blower motor

6 Flashes

Thermostat)

x Air handler fails to operate.

x Integrated control module LED display

consecutive times.

provides indicated error code.

Service” icon illuminated.

x ComfortNet™ thermostat “Call for

x ComfortNet thermostat scrolls “Check Air

MOTOR

6 Flashes

Handler” message.

x Circulator blower motor

x Air handler fails to operate.

VOLTS

shuts down for over or

under voltage condition.

provides indicated error code.

x Integrated control module LED display

shuts down due to over

x Circulator blower motor

icon illuminated.

x ComfortNet thermostat “Call for Service”

MOTOR

PARAMS

temperature condition on

power module.

does not have enough

information to operate

properly.

x Circulator blower motor

6 Flashes

LOW ID

AIRFLOW

consecutive times.

x Motor fails to start 40

demanded.

x Airflow is lower than

6 Flashes

Handler” message.

provides indicated error code.

icon illuminated.

Handler” message.

performance or operates on low stage

when high stage is expected.

x ComfortNet thermostat scrolls “Check Air

x Air handler fails to operate.

x Integrated control module LED display

x ComfortNet thermostat “Call for Service”

x ComfortNet thermostat scrolls “Check Air

x Air handler operates at reduced

provides indicated error code.

x Integrated control module LED display

23

W

A

IRING

D

IAGRAMS

WARNING

HIGH VOLTAGE!

MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO DO SO

DISCO NNECT ALL POWER BEFORE SERVICING.

MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

FL

TL

HTR1

FL

TL

HTR2

FL

TL

HTR3

FL

TL

HTR4

PU

BL

RD

BK

M1

M3

YL

M4

RD

M2

R1

BK

BK

RD

YL

BL

BK

RD

FOUR (4) ELEMENT ROWS

L2

L1

L1

L2

GND

INDOOR

IR

CIRCULATOR

BLWR

208/230 VAC

24 VAC

HEAT SEQUENCER R1

HEAT SEQUENCER R2

BK

RD

YL

BL

BL

RD

M5

M7

M8

M6

R2

WH

L2

GND

40 VA
TRANSFORMER

INDO OR

AIR

CIRCULATOR

BLWR

1

2

3

4

5

6

7

8

9

2

CFM LED

STATUS

LED

SEE NOTE 6

FL

TL

HTR2

FL

TL

HTR1

BK

RD

M1

M3

R

M2

M4

RD

BK

BK

RD

L1

L2

TWO (2) ELEMENT ROWS

TWO (2) ELEMENT ROWS

3

RD

2

1

1

COOL

BL

ADJUST

DELAY

DEHUM

DIP S WITCHE S

BIAS

BIAS

CIRCULATOR BLOWER

CIRCULATOR BLOWER

4

3

2

1

BK

SEE
NOTE 5

UNUSED

TERM

1
2
3

4

5

RD

PU

BL

WH

HEAT

ELEC

RX LED

BK

RD

AF

BK

BK

1

2

3

4

5

6

7

8

9

9

RD

RD

TH

TH

FUSE

FUSE

DEHUM

DEHUM

W2

W2

GN

GN

Y2

Y2

Y1

Y1

W1

W1

RD

RD

GND

GND

O

O

G

G

C

C

R

R

2

2

1

1

BL

BL

TR

TR

COM

COM

24 V

24 V
3 A

3 A

GND

GND

GN

GN

FL

FL

FL

YL

RD

BK

L2

L1

L1

L2

24 V THERMOSTAT CONNECT IONS

24 V THERMOSTAT CONNECT IONS

HTR1

BK

TL

TL

RD

HTR2

TL

HTR3

YL

RD

BK

BL

M1

M3

M1

M2

M2

M4

R1

R2

BK

RD

YL

BK

RD

L2

L2L1L1

THREE (3) ELEMENT ROWS

THREE (3) ELEMENT ROWS

DISCONNECT

L1

FUSE 3 A

R

R

24V THERMOSTAT CONNECTIONS

24V THERMOSTAT CONNECTIONS

W1

W1

W2

W2

Y1

Y1Y1

TO

Y2

Y2

MICRO

G

G

O

O

DEHUM

DEHUM

C

C

BK

1

2

PU

3

RD

BL

4

BR

5

WH

6

7

8

9

L1

TH

W1 (1)

W2 (2)

+VDC (1)

RX (2 )

TX (3)

GND (4)

TR

COM

INTEGRATED CONTROL MODULE

FL

HTR1

TL

BK

BK

RD

BK

M1

R

M2

BK

BK

L1

L2

NOTE: WHEN INSTALLING HEATER KIT, ENSURE SPEED TAP DOES NOT EX

NOTE: WHEN INSTALLING HEATER KIT, ENSURE SPEED TAP DOES NOT EXCEED MINIMUM BLOWER SPEED (MBS) SPECIFIED FOR THE AIRHANDLER/HEATER

KIT COMBINATION ON THIS UNIT'S S&R PLATE. AFTER INSTALLING OPTION AL HEAT KIT, MARK AN "X" IN THE PROVIDED ABOVE.

KIT COMBINATION ON THIS UNIT'S S&R PLATE. AFTER INSTALLING OPTION AL HEAT KIT, MARK AN "X" IN THE PROVIDED ABOVE.

MARK ACCORDING TO NUMBER OF HEATER ELEMENT ROWS IN STALLED. NO MARK INDICATES NO HEAT KIT INSTALLED.

MARK ACCORDING TO NUMBER OF HEATER ELEMENT ROWS IN STALLED. NO MARK INDICATES NO HEAT KIT INSTALLED.

PL2

PL1

2

2

3

3

1

1

6

6
5

5

4

4

7

7

8

8
9

9

SEE

NOTE

BK

7

RD

PU

BL

WH

RD

ONE (1) ELEMENT ROWS

RD

RD

BK

BK

WH

BR

BL

4

DIAGNOSTIC

LED

3

1
2

3
4

LEARN

BL

GY

BK

RD

ECM MOTOR

HARNESS

COLOR CODES:
PK PINK
BR BROWN

BK

1

2

3

BL

4

5

BR

6

7

8

9

WH WHITE
BL BLUE

GY GRAY

RD RED
YL YELLOW

OR ORANGE

PU PURPLE
GN GREEN

BK BLACK

LOW VOLTAGE (24V)

LOW VOLTAGE FIEL D

HI VOLTAGE (230V)

HI VOLTAGE FIELD

JUNCTION

TERMINAL

IN TERNAL TO

INTEGRATED CONTROL

EQUIPMENT GND

FIELD GND

FIELD SPLI CE

RESISTOR

OVERCURRENT

PROT. DEVICE

PLUG CON NEC TIO N

NOTES:

1. PLACE RED WIRES ON TRANSFORMER
TERMINAL 2 FOR 208 VAC OPERATION.

2. MANUFACTURER'S SPECIFIED
REPLACEMENT PARTS MUST BE USED

L2

WHEN SERVICING.

3. IF ANY OF THE ORIGINAL WIRES AS
SUPPLIED WITH THIS UNIT MUST
BE REPLACED, IT MUST BE REPLACED
WITH WIRING MATERIAL HAVING A
TEMPERATURE RATING OF AT LEAST 105°C.
USE COPP ER CONDUC TORS ON LY.

4. UNIT MUST BE PERMANENTLY
GROUNDED AND CONFORM TO N.E.C AND
LOCAL CO DES.

5. TO RECALL THE LAST 6 FAULTS, MOST
RECEN T TO LE AST RECE NT, DEP RES S
SWITCH FOR MORE THAN 2 SECONDS
WHILE IN STANDBY (N THERMOSTAT
INPUTS)

6. BIAS AND TERM DIP SWITCHES MUST BE
IN "ON" POSITION. RED STATUS LED
PROVIDES NETWORK STATUS. GREEN RX
LED IND ICATE S NETWOR K TRAFFI C. USE
LEARN BUTTON TO RESET NETWORK.

7. DISCARD CONNECTOR PL1 WHEN
INSTALLING OPTIONAL HEAT KIT.

GND

0140A00039-D

Wiring is subject to change, always refer to the wiring diagram on the unit for the most up-to-date wiring.

24