Carrier 58MVP User Manual

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Deluxe 4-Way Multipoise Variable-Capacity

Direct-Vent Condensing Gas Furnace

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Service and Maintenance Instructions

For Sizes 040–120, Series 140 and 150

NOTE: Read the entire instruction manual before starting the

installation. This symbol → indicates a change since the last issue.

• • • • • • • • • • • • • • •

ULTRA HIGH EFFICIENCY

GAS FURNANCE

58MVP

A93040

TABLE OF CONTENTS

SAFETY CONSIDERATIONS.....................................................1

Introduction ....................................................................................2

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS........2

CARE AND MAINTENANCE.....................................................2

Cleaning and/or Replacing Air Filter.......................................3

Blower Motor and Wheel Maintenance...................................3

Cleaning Burners ......................................................................4

Cleaning Heat Exchangers........................................................5

Flushing Collector Box and Drainage

System ............................................................................................7

Servicing Hot Surface Ignitor ..................................................7

Electrical Controls and Wiring.................................................8

Checking Heat Tape Operation

(If Applicable)................................................................................8

Winterizing................................................................................9

WIRING DIAGRAMS.................................................................10

TROUBLESHOOTING ...............................................................10

SAFETY CONSIDERATIONS

Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and qualified personnel should install, repair, or service heating equipment.

Untrained personnel can perform basic maintenance functions such as cleaning and replacing air filters. All other operations must be performed by trained service personnel. When working on heating equipment, observe precautions in the literature, on tags, and on labels attached to or shipped with the unit and other safety precautions that may apply.

Follow all safety codes. In the United States, follow all safety codes including the National Fuel Gas Code (NFGC) NFPA 54-1999/ANSI Z223.1-1999 and the Installation Standards, Warm

A92496

Fig. 1—Multipoise Furnace in Upflow Orientation

EFFICIENCY RATING CERTIFIED

REGISTERED QUALITY SYSTEM

Air Heating and Air Conditioning Systems (NFPA 90B) ANSI/NFPA 90B. In Canada, refer to the CAN/CGA-B/49.1- and .2-M95 National Standard of Canada, Natural Gas and Propane

CERTIFIED

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 1 4 Tab 6a 8a

PC 101 Catalog No. 535-795 Printed in U.S.A. Form 58MVP–9SM Pg 1 10-00 Replaces: 58MVP-7SM

Installation Codes (NSCNGPIC). Wear safety glasses and work gloves. Have a fire extinguisher available during start-up and adjustment procedures and service calls.

Recognize safety information. This is the safety-alert symbol When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

The ability to properly perform maintenance on this equipment requires certain expertise, mechanical skills, tools, and equipment. If you do not possess these, do not attempt to perform any maintenance on this equipment other than those procedures recommended in the User’s Manual. FAILURE TO FOLLOW THIS WARNING COULD RESULT IN POSSIBLE DAMAGE TO THIS EQUIPMENT, SERIOUS PERSONAL INJURY, OR DEATH.

Never store anything on, near, or in contact with the furnace, such as:

1. Spray or aerosol cans, rags, brooms, dust mops, vacuum cleaners, or other cleaning tools.

2. Soap powders, bleaches, waxes or other cleaning compounds, plastic or plastic containers, gasoline, kerosene, cigarette lighter fluid, dry cleaning fluids, or other volatile fluids.

3. Paint thinners and other painting compounds, paper bags, or other paper products. Failure to follow this warning can cause corrosion of the heat exchanger, fire, personal injury, or death.

INTRODUCTION

These instructions are written as if the furnace is installed in an upflow application. An upflow furnace application is where the blower is located below the combustion and controls section of the furnace, and conditioned air is discharged upward. Since this furnace can be installed in any of the 4 positions shown in Fig. 2, you may need to revise your orientation to component location accordingly.

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

AIRFLOW

UPFLOW

AIRFLOW

HORIZONTAL

LEFT

DOWNFLOW

AIRFLOW

HORIZONTAL

RIGHT

AIRFLOW

A93041

Fig. 2—Multipoise Orientation

2. Firmly touch a clean, unpainted, metal surface of the furnace chassis which is close to the control. Tools held in a person’s hand during grounding will be satisfactorily discharged.

3. After touching the chassis you may proceed to service the control or connecting wires as long as you do nothing that recharges your body with static electricity (for example; DO NOT move or shuffle your feet, DO NOT touch ungrounded objects, etc.).

4. If you touch ungrounded objects (recharge your body with static electricity), firmly touch furnace again before touching control or wires.

5. Use this procedure for installed and uninstalled (ungrounded) furnaces.

6. Before removing a new control from its container, discharge your body’s electrostatic charge to ground to protect the control from damage. If the control is to be installed in a furnace, follow items 1 through 5 before bringing the control or yourself into contact with the furnace. Put all used AND new controls into containers before touching ungrounded objects.

7. An ESD service kit (available from commercial sources) may also be used to prevent ESD damage.

CARE AND MAINTENANCE

For continuing high performance and to minimize possible equipment failure, it is essential that maintenance be performed annually on this equipment. Consult your local dealer for maintenance and maintenance contract availability.

Electrostatic discharge can affect electronic components. Take precautions during furnace installation and servicing to protect the furnace electronic control. Precautions will prevent electrostatic discharges from personnel and hand tools which are held during the procedure. These precautions will help to avoid exposing the control to electrostatic discharge by putting the furnace, the control, and the person at the same electrostatic potential.

1. Disconnect all power to the furnace. DO NOT TOUCH THE

CONTROL OR ANY WIRE CONNECTED TO THE CONTROL PRIOR TO DISCHARGING YOUR BODY’S ELECTROSTATIC CHARGE TO GROUND.

Turn off the gas and electrical supplies to the unit before performing any maintenance or service. Follow the operating instructions on the label attached to the furnace. Failure to follow this warning could result in personal injury or death.

The minimum maintenance that should be performed on this equipment is as follows:

1. Check and clean or replace air filter each month as required.

2. Check blower motor and wheel for cleanliness annually.

3. Check electrical connections for tightness and controls for proper operation each heating season. Service as necessary.

4. Check for proper condensate drainage. Clean as necessary.

5. Check for blockages in combustion-air and vent pipes annually.

6. Check burners for cleanliness annually.

Personal injury could result from sharp metal edges, etc. Use care when removing parts.

Step 1—Cleaning and/or Replacing Air Filter

The air filter arrangement may vary depending on the application or orientation.

WASHABLE

FILTER

IN FURNACE

FILTER RETAINER

Never operate unit without a filter or with the blower access panel removed. Failure to follow this warning could result in a fire or personal injury.

NOTE: If the filter has an airflow direction arrow, the arrow must point toward the blower.

To clean or replace filters, proceed as follows:

→

If filter is installed in filter cabinet adjacent to furnace:

1. Turn off electrical supply to furnace.

2. Remove filter cabinet door.

3. Slide filter out of cabinet.

4. If equipped with permanent, washable filter, clean filter by spraying cold tap water through filter in opposite direction of airflow. Rinse filter and let dry. Oiling or coating of the filter is not recommended.

5. If equipped with factory specified disposable media filter, replace only with media filter having the same part number and size.

6. Slide filter into cabinet.

7. Replace filter cabinet door.

8. Turn on electrical supply to furnace.

If filter is installed in furnace blower compartment:

1. Turn off electrical supply to furnace.

2. Remove main furnace door and blower access panel.

3. Release filter retainer wire. (See Figs. 3 and 4.)

WASHABLE FILTER

FILTER SUPPORT

FILTER RETAINER

WASHABLE FILTER OR DISPOSABLE MEDIA FILTER IN FILTER CABINET

Fig. 3—Bottom Filter Arrangement

A00232

WASHABLE FILTER OR DISPOSABLE MEDIA FILTER IN FILTER CABINET

A00233

Fig. 4—Filter Installed for Side Inlet

4. Slide filter out of furnace.

5. Furnaces are equipped with permanent, washable filter(s). Clean filter by spraying cold tap water through filter in opposite direction of airflow.

6. Rinse filter and let dry. Oiling or coating filter is not recommended.

7. Slide filter into furnace.

8. Recapture filter retaining wire.

9. Replace blower access panel and main furnace door.

10. Turn on electrical supply to furnace.

Step 2—Blower Motor and Wheel Maintenance

To ensure long life, economy, and high efficiency, clean accumulated dirt and grease from blower wheel and motor annually.

The inducer and blower motors are pre-lubricated and require no additional lubrication. These motors can be identified by the absence of oil ports on each end of the motor.

The following items should be performed by a qualified service technician.

Clean blower motor and wheel as follows:

1. Turn off electrical supply to furnace.

2. Remove main furnace door and blower access panel.

3. Disconnect wires a. Disconnect motor wiring harness plug on blower housing. b. Disconnect auxiliary limit switch leads at switch. c. Disconnect field thermostat connections depending on their

length and routing.

4. Position control box, transformer, and door switch assembly to right side of furnace casing.

5. If condensate trap is located in left- or right-hand side of furnace casing, proceed to item 6. Otherwise remove trap and tubing as described below:

a. Disconnect field drain connection from condensate trap. b. Disconnect drain and relief port tubes from condensate

trap.

c. Remove condensate trap from blower shelf.

6. Remove screws securing blower assembly to blower shelf and slide blower assembly out of furnace.

7. Clean blower wheel and motor by using a vacuum with soft brush attachment. Be careful not to disturb balance weights (clips) on blower wheel vanes. Do not bend wheel or blades as balance will be affected.

8. If greasy residue is present on blower wheel, remove wheel from the blower housing and wash it with an appropriate degreaser. To remove wheel:

a. Mark blower wheel location on shaft before disassembly to

ensure proper reassembly.

b. Loosen setscrew holding blower wheel on motor shaft.

NOTE: Mark blower mounting arms and blower housing so each arm is positioned at the same hole location during reassembly.

c. Mark blower wheel orientation and cutoff plate location to

ensure proper reassembly.

d. Remove screws securing cutoff plate and remove cutoff

plate from housing.

e. Remove bolts holding motor mounts to blower housing and

slide motor and mounts out of housing. f. Remove blower wheel from housing. g. Clean wheel per instructions on degreaser cleaner.

9. Reassemble motor and blower wheel by reversing items 8b through 8f. Ensure wheel is positioned for proper rotation. Be sure to attach ground wire.

10. Reinstall blower assembly in furnace.

11. Reinstall condensate trap and tubing if previously removed. a. Reinstall condensate trap in hole in blower shelf. b. Connect condensate trap drain tubes. See Fig. 8 or tubing

diagram on main furnace door for proper tube location. (1.) Connect 1 tube (blue or blue and white striped) from

collector box.

(2.) Connect 1 tube (violet or unmarked) from inducer

housing.

(3.) Connect 1 tube (relief port, green or pink) from

collector box.

c. Connect field drain to condensate trap.

NOTE: Ensure tubes are not kinked or pinched, as this will affect operation.

12. Reinstall control box, transformer, and door switch assembly on blower shelf.

13. Reconnect wires. a. Refer to furnace wiring diagram and connect motor and

auxiliary limit switch leads. (See Fig. 16.)

b. Connect thermostat leads if previously disconnected.

14. Turn on electrical supply. Manually close blower access panel door switch. Use a piece of tape to hold switch closed. Check for proper rotation and speed changes between heating and cooling by jumpering R to G and R to Y on control center thermostat terminals. (See Fig. 11.)

Blower access panel door switch opens 115-v power to control center. No component operation can occur. Caution must be taken when manually closing this switch for service purposes. Failure to follow this warning could result in personal injury or death.

15. If furnace is operating properly, release blower access panel door switch, replace blower access panel, and replace main furnace door.

Step 3—Cleaning Burners

The following items should be performed by a qualified service technician. If the burners develop an accumulation of light dirt or dust, they may be cleaned by using the following procedure:

1. Turn off gas and electrical supplies to furnace.

2. Remove main furnace door.

3. Remove burner box cover.

4. Using backup wrench, disconnect gas supply pipe from gas valve.

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation.

5. Remove wires from gas valve. Note location for reassembly.

6. Remove burner box pressure tube from gas valve regulator fitting.

7. Remove screws that secure manifold to burner box. (See Fig.

5.)

CELL

PANEL

MANIFOLD MOUNTING SCREW

MANIFOLD

GAS VALVE REGULATOR FITTING

GAS VALVE

A96304

Fig. 5—Burner Box Assembly

8. Remove manifold, orifices, and gas valve as 1 assembly.

9. Remove screws attaching burner assembly in burner box.

10. Remove burner assembly from burner box. NOTE: All burners are attached to burner bracket and can be

removed as 1 assembly.

11. Clean burners with soft brush and vacuum.

12. Reinstall manifold, orifice, and gas valve assembly in burner box. Ensure manifold seal grommet is installed properly and burners fit over orifices.

13. Reconnect wires to gas valve. Refer to furnace wiring diagram for proper wire location.

14. Reinstall burner box pressure tube to gas valve regulator fitting.

15. Reinstall gas supply pipe to gas valve using backup wrench on gas valve to prevent rotation and improper orientation.

NOTE: Use propane gas resistant pipe dope to prevent gas leaks. DO NOT use Teflon tape.

Gas valve switch or knob MUST be facing forward or tilted upward. Failure to follow this warning could result in property damage, personal injury, or death.

16. Replace burner box cover.

17. Turn on gas and electrical supplies to furnace.

18. Check for gas leaks.

Never use matches, candles, flame, or other sources of ignition to check for gas leakage. Use a soap-and-water solution. Failure to follow this warning could result in a fire, personal injury, or death.

19. Replace main furnace door.

Step 4—Cleaning Heat Exchangers

The following items should be performed by a qualified service technician.

PRIMARY HEAT EXCHANGERS If the heat exchangers get an accumulation of light dirt or dust on

the inside, they may be cleaned by the following procedure: NOTE: If the heat exchangers get a heavy accumulation of soot

and carbon, both the primary and secondary heat exchangers should be replaced rather than trying to clean them thoroughly due to their intricate design. A build-up of soot and carbon indicates that a problem exists which needs to be corrected, such as improper adjustment of manifold pressure, insufficient or poor quality combustion air, improper vent termination, incorrect size or damaged manifold orifice(s), improper gas, or a restricted heat exchanger (primary or secondary). Action must be taken to correct the problem.

1. Turn off gas and electrical supplies to furnace.

2. Remove main furnace door.

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and hazardous operation.

PRIMARY HX INLET OPENINGS

A96305

Fig. 6—Cleaning Inlet Openings of Primary Heat

Exchangers

12. Reverse items 4 through 10 for reassembly.

The ground wire from the gas valve MUST be attached to the burner box attachment screw. Failure to attach this ground wire to an adequate casing ground will cause the furnace control to lock out.

NOTE: Be sure burner box gasket is installed between burner box and cell panel. If gasket is damaged, replace it.

NOTE: Inspect combustion-air intake housing. If foamed gasket was removed, check for any damage. If gasket is damaged in any way, it must be repaired. To repair, remove damaged gasket section, apply sealant releasing agent such as PAM cooking spray or equivalent (must not contain corn or canola oil, aromatic or halogenated hydrocarbons or inadequate seal may occur) to burner box and apply a small bead of G.E. RTV 162, G.E. RTV 6702, or Dow-Corning RTV 738 sealant to edge of combustion-air intake housing. (See Fig. 7.)

3. Disconnect wires or connectors to rollout switch, gas valve, ignitor, and flame sensor.

4. Disconnect combustion-air intake pipe from intake housing.

5. Remove the pressure switch tube from intake housing.

6. Remove screws attaching intake housing to burner box, and rotate intake housing away from burner box for removal.

7. Using backup wrench, disconnect gas supply pipe from gas valve.

8. Disconnect pressure tubing from gas valve.

9. Remove 2 screws attaching top filler panel and rotate upwards to gain access to screws attaching burner box to cell panel.

10. Remove screws attaching burner box to cell panel. (See Fig.

5.)

NOTE: Burner box cover, manifold, gas valve, and burner assembly should be removed as 1 assembly.

11. Clean heat exchanger openings with a vacuum and a soft brush. (See Fig. 6.)

NOTE: After cleaning, inspect the heat exchangers to ensure they are free of all foreign objects that may restrict flow of combustion products.

RTV

PAM

A93087

Fig. 7—Combustion-Air Intake Housing Gasket

Repair

13. Refer to furnace wiring diagram and reconnect wires to rollout switch, gas valve, ignitor, and flame sensor.

14. Reconnect pressure switch tubes to gas valve and intake housing. Refer to tube routing label on main furnace door for proper tube location. (See Fig. 8.) Be sure tubes are not kinked.

15. Turn on gas and electrical supplies to furnace.

Furnace is shipped from factory in upflow configuration. Pressure tube and drain tube routing MUST match the diagrams below.

Condensate Trap; Factory Installed

in Blower Shelf

Tube location when used in UPFLOW application

(Blower access panel removed)

COLLECTOR BOX TUBE

(PINK)

COLLECTOR BO X TU BE (GREE N)

INDUCER HOUSING (MOLDED) DRAIN TUBE

(BEHIND COLLECTOR BOX DRAIN TUBE)

COLLECTOR BOX DRAIN TUBE

(BLUE)

FIELD-INSTALLED

FACTORY-SUPPLIED DR AIN TUB E

COUPLING (LEFT DRAIN OPTION)

FIELD-INSTALLED FACTORY-

SUPPLIED DRAIN TUBE

Condensate Trap on

LEFT Side

CAP

COLLECTOR B O X TUBE (GREEN)

COLLECTOR BOX DRAIN TUBE

(BLUE & WHITE STRIPED)

COLLECTOR BOX

EXTENSION TUBE

CONDENSATE TRAP

BURNER E NCLOSURE PR ES SURE

REFERENCE TUBE ASSEMBLY

INDUCER HOUSING DRAIN TUBE (VIOLET)

Tube locatio n when used in DOWNFLOW ap plicatio n

Tube location when used on

HORIZONTAL - LEFT a pplication

PLUG

CAP

BURNER

ENCLOSURE

PRESSURE

REFERENCE TUBE

ASSEMBLY

COLLECTOR BOX EXTENSION TUBE

CONDENSATE TRAP

COLLECTOR BOX EXTENSION DRAIN TUBE

COLLECTOR B OX TU BE (PINK) RELOCA TE TUB E BETW EE N BLOWER SHELF AND

INDUCER HOUSING FOR 040,060, AND 080 HEA TING INP UT FURNACES

NOTE:

1. All tubing must be connected securely and routed to avoid kinks and traps.

2. Pressure tubing must always slope away from pressure switch to collector box connection as shown.

3. HORIZONT AL-LEFT installations require the collector box pressure tube to be relocated between the inducer housing and the blower shelf to prevent a trap.Refer to the Installation Instructions for further details.

DRAIN TUBE

COUPLING

TUBE ROUTING

BURNER E NCLOSURE PR ES SURE

REFERENCE TUBE ASSEM BLY

CAP

PLUG

COLLECTOR BOX

DRAIN TUBE

(BLUE & WHITE STRIPED)

CONDENSATE TRAP

FIELD-INSTALLED

FACTORY-SUPPLIED DRAIN

TUBE COUPLING (RIGHT

DRAIN OPTION)

FIELD-INSTALLED FACTORY-SUPPLIED 1/2-IN. CPVC STREET

ELBOWS (2) FOR LEFT

DRAIN OPTION

COLLECTOR BOX DRAIN TUBE

(BLUE)

COLLECTOR BOX EXTENSION TUBE

PLUG

COLLECTOR BOX TU BE

(PINK)

COLLECTOR BO X DR AIN TUBE

(BLUE & WHITE STRIPED)

COLLECTOR

BOX TUBE

(GREEN)

INDUCER HOUSING

DRAIN TUBE

(VIOLET)

COLLECTOR BOX

DRAIN TUBE (BLUE)

COLLECTOR BO X TU BE

(PINK)

COLLECTOR BOX TU BE

(GREEN)

COLLECTOR BOX DRAIN TUBE

(BLUE)

CONDENSA T E T R AP

INDUCER HOUSING

DRAIN TUBE

(VIOLET)

COLLECTOR BOX TUBE

(GREEN)

BURNER ENCLOSURE

PRESSURE REFERENCE

TUBE ASSEMBLY

COLLECTOR BOX DRAIN TUBE

(BLUE & WHITE STRIPED)

INDUCER HOUSING

DRAIN TUBE

(VIOLET)

DRAIN TUBE

COUPLING

DRAIN TUBES ROUTED IN

FRONT OF GAS VALVE

Tube location when used on

HORIZONTAL - RIGHT application

COLLECTOR BOX DRAIN TUBE (BLUE)

PLUG

CAP

COLLECTOR BO X TU BE (GREE N)

COLLECTOR BOX DRAIN TUBE

(BLUE AND WHITE STRIPED)

Condensate Trap on LEFT

COLLECTOR BOX DRAIN TUBE

PLUG

COLLECTOR BOX EXTENSION TUBE

CONDENSATE TRAP

GAS VALVE

CO LLECTOR BOX TUBE (PINK)

INDUCER HOUSING DRAIN TUBE (VIOLET)

Side Optional

BURNER ENCLOSURE PRESSURE

REFERENCE TUBE ASSEMBLY CAP

PLUG

COLLECTOR BOX

DRAIN TUBE

(BLUE & WHITE STRIPED)

Condensate Trap on

RIGHT Side

CAP

(BLUE)

COLLECTOR BOX TUBE

(PINK)

COLLECTOR BOX EXTENSION

DRAIN TUBE

AUXILIARY "J" BOX RELOCATED HERE

BURNER

ENCLOSURE

PRESSURE

REFERENCE

TUBE ASSEMBLY

COLLECTOR BO X EXTENSION TUBE

CONDENSATE TRAP

325400-201 REV. C (LIT - BOTTOM)

Fig. 8—Furnace Pressure and Drain Tubing Diagram

16. Check furnace operation through 2 complete heat operating cycles. Look through sight glass in burner enclosure to check burners. Burner flames should be clear blue, almost transparent. (See Fig. 9.)

17. Check for gas leaks.

A00351

18. Replace main furnace door. SECONDARY HEAT EXCHANGERS NOTE: The condensing side (inside) of the secondary heat

exchangers CANNOT be serviced or inspected. A small number of bottom outlet openings can be inspected by removing the inducer

BURNER FLAME

MANIFOLD

Fig. 9—Burner Flame

RTV

PAM

BURNER

A89020

NOTE: Ensure the drain tube disconnected from the inducer housing is higher than the collector box opening or water will flow out tube.

9. Inspect inside area of collector box for any pieces of foreign materials and remove if present.

DO NOT use wire brush or other sharp object to inspect or dislodge materials in secondary heat exchangers as failure of the secondary heat exchanger will occur. Flush with water only.

10. Reassemble inducer assembly by reversing items 5-7. Tighten the vent coupling clamp screw(s) to 15 in.-lb of torque.

NOTE: If seal between the inducer housing and the collector box is damaged in any way, it must be repaired. To repair, apply sealant releasing agent such as PAM cooking spray or equivalent (must not contain corn or canola oil, aromatic or halogenated hydrocarbons or inadequate seal may occur) to inducer housing. (See Fig. 10.) Apply a small bead of G.E. RTV 162, G.E. RTV 6702, or Dow-Corning RTV 738 sealant to groove in collector box.

11. Refer to furnace wiring diagram and reconnect wires to inducer motor and pressure switches or connectors.

12. Reconnect pressure tubes to pressure switches. See diagram on main furnace door for proper location of tubes. Be sure tubes are not kinked. (See Fig. 8.)

13. Turn on gas and electrical supplies to furnace.

14. Check furnace operation through 2 complete heat operating cycles. Check area below inducer housing, vent pipe, and condensate trap to ensure no condensate leaks occur. If leaks are found, correct the problem.

15. Check for gas leaks.

A93081

Fig. 10—Gasket on Collector Box

assembly. See Flushing Collector Box and Drainage System section for details on removing inducer assembly.

Step 5—Flushing Collector Box and Drainage System

1. Turn off gas and electrical supplies to furnace.

2. Remove main furnace door.

3. Disconnect inducer motor and pressure switch wires or connectors.

4. Disconnect pressure switch tubes.

5. Disconnect vent pipe from inducer housing outlet by loosening coupling clamp on inducer outlet.

6. Disconnect drain tube from inducer housing. (See Fig. 8.)

7. Remove inducer housing assembly by removing 4 bolts attaching assembly to cell panel.

8. Flush inside of collector box with water until discharge from condensate trap is clean and runs freely.

16. Replace main furnace door.

Step 6—Servicing Hot Surface Ignitor

The ignitor does NOT require annual inspection. Check ignitor resistance before removal.

1. Turn off gas and electrical supplies to furnace.

2. Remove main furnace door.

3. Disconnect ignitor wire connection.

4. Check ignitor resistance. a. Using an ohm meter, check resistance across both ignitor

leads in connector. b. Cold reading should be between 45 ohms and 90 ohms. c. If ohm reading is higher than 110 ohms, ignitor is cracked

and must be replaced.

5. Remove ignitor assembly.

Allow ignitor to cool before removal. Normal operation temperatures exceed 2000°F.

a. Do not remove ignitor from bracket while assembly is in

furnace. Using a 1/4 in. nutdriver, remove screw securing

bracket and ignitor assembly to bottom of burner box. The screw in the bracket is always located toward outside of burner box. The screw may be hidden by inlet box or inlet pipe, but can be removed without removing either. After removing screw, slide ignitor and bracket toward outside of burner box and pull straight out.

The ignitor is fragile. DO NOT allow it to hit the side of the burner box opening while removing or replacing it.

b. Inspect ignitor for a white area indicating a crack may be

present. If found, replace ignitor.

NOTE: A small crack cannot be seen on a new ignitor. After a period of operation, a white area will be visible around the crack.

c. If replacement is required, replace ignitor on ignitor bracket

external to furnace to avoid damage as the silicon portion is very brittle and will easily crack or shatter.

d. To remove ignitor from ignitor bracket, remove screw

holding ignitor ceramic block to bracket and pull ceramic block out of bracket.

6. To replace ignitor/ignitor assembly, reverse items 5a through 5d.

7. Reconnect ignitor wire connection.

8. Turn on gas and electrical supplies to furnace.

9. Verify ignitor operation by initiating control board self-test feature or by cycling thermostat.

10. Replace main furnace door.

Step 7—Electrical Controls and Wiring

There may be more than 1 electrical supply to the unit. Check accessories and cooling unit for additional electrical supplies.

The electrical ground and polarity for 115-v wiring must be maintained properly. Refer to Fig. 11 for field wiring information and to Fig. 15 for unit wiring information.

NOTE: If the polarity is not correct, the STATUS LED on the control center will flash rapidly and prevent the furnace from operating. The control system also requires an earth ground for proper operation of the control center and flame sensing.

The 24-v circuit contains an automotive-type, 3-amp fuse located on the control center. (See Fig. 12.) Any direct shorts of the 24-v wiring during installation, service, or maintenance will cause this fuse to blow. If fuse replacement is required, use ONLY a fuse of identical size.

With power to the unit disconnected, check all electrical connections for tightness. Tighten all screws on electrical connections. If any smoky or burned connections are found, disassemble the connection, clean all parts, strip wire, and reassemble properly and securely.

Reconnect electrical supply to unit and observe unit through 1 complete operating cycle. Electrical controls are difficult to check without proper instrumentation; if there are any discrepancies in the operating cycle, contact your dealer and request service.

115-V

SINGLE

PHASE

115-V

FIELD-SUPPLIED

DISCONNECT

SWITCH

FURNACE CONTROL

CENTER

WIRE

THREE-WIRE

HEATING

ONLY

AUXILIARY J-BOX

FIVE

NOTE 5

W/W1

Y/Y2

24-V

TERMINAL

BLOCK

Step 8—Checking Heat Tape Operation (If Applicable)

In applications where the ambient temperature around the furnace is 32°F or lower, freeze protection measures are required. If this application is where heat tape has been applied, check to ensure it will operate when low temperatures are present.

WCR GY

NOTE

NOTE 1

TWO WIRE

NOTES:

Connect Y or Y/Y2 terminal as shown for proper cooling operation.

Proper polarity must be maintained for 115-v wiring.

Use W2 with 2-stage thermostat when zoning.

If any of the original wire, as supplied, must be replaced, use same type or equivalent wire.

Some thermostats require a "C" terminal connection as shown.

FIELD 24-V WIRING FIELD 115-, 208/230-, 460-V WIRING FACTORY 24-V WIRING FACTORY 115-, 208/230-, 460-V WIRING

THERMOSTAT TERMINALS

GND

CONDENSING

UNIT

FIELD-SUPPLIED

DISCONNECT

208/230- OR

460-V

THREE PHASE

GND

208/230-V

SINGLE

PHASE

GND

Fig. 11—Field Wiring

A98325

EAC-ELECTRONIC AIR CLEANER TERMINALS

(115-VAC 1 AMP MAX)

MAIN BLOWER

CONTROL WIRE

CONNECTOR

CONTINUOUS

FAN (CF) SETUP

SWITCHES

HOT SURFACE IGNITOR CONNECTOR

115-V CONNECTORS

HUM

24-V THERMOST AT TERMINALS

W/W1 Y/Y2

24V

COM

TRANSFORMER

24-V CONNECTORS

COMMUNICATION

CONNECTOR

Fig. 12— Variable-Capacity Control Center

PRESSURE SWITCH CONNECTOR

HUM-HUMIDIFIER TERMINAL (24-VAC 0.5 AMP MAX)

DEHUMIDIFY ENABLE (DE)

DEHUMIDIFIER (DEHUM) CONNECTOR 3-AMP FUSE

STATUS AND DIAGNOSTIC LED LIGHTS

AIR CONDITIONING (A/C) SETUP SWITCH SETUP SWITCHES (SW) AND BLOWER OFF DELAY SETUP SWITCHES

MODEL PLUG

A99097

NOTE: Heat tape, when used, should be wrapped around the condensate drain trap and drain line. There is no need to use heat tape within the furnace casing. Most heat tapes are temperature activated, and it is not practical to verify the actual heating of the tape. Check the following:

1. Check for signs of physical damage to heat tape such as nicks, cuts, abrasions, gnawing by animals, etc.

2. Check for discolored heat tape insulation. If any damage or discolored insulation is evident, replace heat tape.

3. Check that heat tape power supply circuit is on.

Step 9—Winterizing

Freezing condensate left in the furnace will damage the equipment.

If the furnace will be off for an extended period of time in a structure where the temperature will drop to 32°F or below, winterize as follows:

If this furnace is installed in an unconditioned space where the ambient temperatures may be 32°F or lower, freeze protection measures must be taken.

1. Turn off electrical supply to furnace.

2. Remove main furnace door.

3. Disconnect drain tube from inducer housing. (See Fig. 13.)

4. Insert funnel in drain tube and pour antifreeze, propylene glycol (RV, swimming pool antifreeze, or equivalent) into

32°F MINIMUM INSTALLED AMBIENT OR FREEZE PROTECTION REQUIRED

A93058

furnace until it is visible at point where condensate enters open drain. (See Fig. 14.)

5. Reconnect drain tube to inducer housing.

6. Replace main furnace door.

Fig. 13—Inducer Housing Drain Tube

A99118

Do not use ethylene glycol (Prestone II antifreeze/coolant or equivalent automotive type). Failure of plastic components will occur.

WIRING DIAGRAMS

See figures 11, 12 and 16 for the Deluxe 4-Way Multipoise Furnace wiring diagrams.

TROUBLESHOOTING

For an explanation of fault codes, refer to service label located on back of main furnace door (See Fig. 15.).

The control center stores all fault codes for a period of 5 “good or proper” operating cycles, regardless of 115- or 24-v power interruption.

NOTE: Removing blower access panel opens blower access panel door switch and terminates 115-v power to control center. Look into blower access panel sight glass for current LED status.

1. To retrieve fault code, proceed with the following:

NOTE: NO thermostat signal may be present at control center and all blower time delay of periods must be completed.

a. Leave 115-v power to furnace turned on. b. Remove main furnace door. c. Look into blower access panel sight glass for current LED

status. d. Remove blower access panel. e. Turn setup switch SW-1 to ON position. (See Fig. 12 or 16

for location.) f. Manually close blower access panel door switch. Use a

piece of tape to hold switch closed.

Fig. 14—Funnel in Drain and Antifreeze Running

Through Trap

g. LEDs display last fault code to occur first, followed by any

other fault that has occurred in the last 5 “good or proper” cycles. The remaining faults displayed will be in numerical order starting from the lowest number first. Only 1 of each fault code will be displayed, regardless of how many times the fault has occurred.

h. Fault code display will continue and repeat as described

above or until setup switch SW-1 is turned off.

i. Release blower access panel door switch and replace

blower access panel.

j. Operate furnace through 1 heat cycle to test for proper

operation and check LED status.

k. If furnace is operating properly and LEDs indicate proper

operation, replace main furnace door.

2. Fault code display can be removed from control’s display mode by performing the following. This is also called the “Clean Up Procedure.”

a. Leave 115-v power to furnace turned on. b. Remove main furnace door. c. Look into blower access panel sight glass for current LED

status.

d. Remove blower access panel.

A99119

SERVICE

LED CO D E

RED LED1 ON RED LED2 ON

YELLOW LED3 ON GREEN LED4 ON RED LED2 FLASHING

EACH OF THE FOLLOWING STATUS CODES IS A TWO DIGIT NUMBER WITH THE FIRST DIGIT DETERMINED BY NUMBER OF FLASHES OF THE YELLOW LED AND THE SECOND DIGIT DETERMINED BY NUMB ER O F FLASHES O F THE GREE N LED.

11 NO FAULT IN RECENT HISTORY DISPLAY - Indicates no faults have occurred within last fiv e cycles.

To read recent fault histor y put setu p switch "S W-1" in the " ON" position. To clear recent fault history, put setup switch "SW-1" in the "ON" position and jumper thermostat terminals "R", "W/W1", and "Y/Y2" simultaneously until an "11" is flashed.

12 BLOWER CALIBRATION LOCKOUT - Indicates RPM calculated for low heat was less than 250 RPM

or greater than 1300 RPM on two successive attempts. Auto reset after three hours. Reset power and refer to fault #44 section.

13 LIMIT SWITCH LOCKOUT - Indicates the occurrence of 10 successive limit trips during high heat

or three successive limit trips during low h eat. Auto reset aft er three hours. Check for: - Improper or misaligned limit and/or limit shield.

14 IGNITION LOCKOUT - Control will auto-reset after three hours. Refer to #34. 21 INVALID MODEL SELECTION - Indicates model plug is missing or incorrect. See wiring diagram

for correct connector jumper location.

22 SETUP ERROR - Indicates setup switch "SW-1" or SW-6" is positioned improperly. The following

combinations will cause the fault.

23 INVALID BLOWER AIRFLOW SELECTION - Indicates im proper "A/C" or "C F" switch setting. The 042

and 14 units can deliver 1-1/2 to 3-1/2 tons A/C and 600 to 1400 CFM for continuous fan. The 060 and 20 unit can deliver 2 to 5 tons A/C and 800 to 2000 CFM for continuous fan. If code is flashing unit will default to closest allowable airflow.

24 SECONDARY VOLTAGE FUSE IS OP EN

Check f o r: - Short circuit in secondary voltage (24V ) wiring.

31 HIGH PRESSURE SWITCH FAULT - Indicates high pressure switch is closed at call, or in low heat,

or fails to close after call, or opens in high heat. Check f or: - Plugged c o ndensate drain.

32 LOW PRESSURE SWITCH FAULT - Indicates low pressure switch is closed at call, or fails to close

after call, or opens during operation. Check f or: - Plugged c o ndensate drain.

33 LIMIT OR FLAME ROLL-OUT SWITCH IS OPEN - Indicates the limit, rollout switch or auxiliary limit

switch is open or the unit is operating in high heat only mode due to two successive low heat limit trips. Check for: - Improper or misaligned limit and/or limit shield.

34 IGNITION PROVING FAULT - Control will try three more times before a lockout #14 occurs.

Check for: - Gas valve defective or gas valve turned " OFF".

- Defective Hot Surface Ignitor - Manual valve shut-off.

- Low inlet gas pressure

- Green wire MUST be connec ted to furnace sheet metal.

- Proper flame sense microamps (.5 microamps D.C. min imu m, 4.0 - 6.0 nominal HIGH HEAT)

- Inadequate flame carryover or rough ignition.

- Oxide buildup on flame sensor (clean with fine sandpaper.)

41 BLOWER OUTSIDE VALID SPEED RANGE - Indicates the blower is not operating at the ca lculated

RPM. If this fault occur s in conjunction with faul t #44 check wiring to motor otherwise refer to the trouble-shooting guide.

42 INDUCER OUTSIDE VALID SPEED RANGE - Indicates the inducer is not operating at the

calculated RPM, or has not starte d within 10 seconds a f ter a call for heat. Check wiring to motor ot herwise refer to the trouble-sh ooting guide.

43 PRESSURE SWITCH CALI B R ATION F AULT - Indicates the low and high pressure switch "make"

points during high heat purge are not within the calibration range. Check f or: - Plugged c o ndensate drain.

44 BLOWER CALIBRATION FAULT - Indicates the calculated blower speed is below 250 or above

1300 RPM. Un it will default to low or high heat mode if possible. If this fault occurs in conjunction with fault #41 check wiring to motor otherwise refer to the trouble-shooting guide. If this fault occurs by itself check for undersized ductwork, or excessive static caused by a dirty filter, or closed registers.

STATUS CODE EXAMPLE

To initiate the component test sequence, shut "OFF" the room thermostat or disconnect the "R" thermostat lead. Put setup switch "SW-6" in the "ON" position to start the component test sequence. Once initiated the main board will turn "ON" the inducer motor-low speed, inducer motor-high speed, hot surface ignitor, blower motor-low speed, and blower motor-high speed for 15-20 seconds each. When component test is completed one or more of the following cod e s will flash. Ga s Valve and Humidifier will not be turned on. CODE DESCRIPTION 11

Indicates inducer and blower motor tested OK. Visual check of hot surface ignitor required.

22 SETUP ER ROR 41 BLOWER OUTSIDE VALID SPEED RANGE -

42 INDUCER OUTSIDE VALID SPEED RANGE -

wiring and control center. To repe at compone nt te s t turn s e tup switch "SW -6" "OFF" and the n ba c k "O N ". A fter componen t test is completed put setup switch "SW-6" in the "OFF" position and reconnect the "R" thermostat lead.

Furnace is o perating in emergency heat. The microprocessor has m alf unctioned. To reset: Put setup switch " position and jum per thermostat terminal s " the door sw itch pushed in and po wer to the unit " setup switch in the " Furnace is o perating in high hea t. Furnace is o perating in low heat. Line voltage polarity is reversed.

- Improper high or low heat gas input adjustment.

- Stuck high heat solenoid in gas valve.

- Thermostat call with "SW-1" "ON".

- Thermostat call with "SW-6" "ON".

-"SW-1" and "SW-6" both "ON" tog ether.

- Water in vent piping, possibly sagging pipe.

- Improper pres sure switch wiring or pressure switch tubing connections.

- Failed or "Out-of-Calibra tion" pressure switc hes.

- Water in vent piping, possibly sagging pipe.

- Improper pres sure switch wiring or pressure switch tubing connections.

- Failed or "Out-of-Calibra tion" pressure switc hes.

- Improper low heat gas input adjustment.

- Stuck high heat solenoid in gas valve.

- Water in vent piping, possibly sagging pipe.

- Improper pres sure switch wiring or pressure switch tubing connections.

- Failed or "Out of Calibration" pressure switches.

RED LED2 MICROPROCESSOR MALFUNCTION

FUSE

COUNT THE NO.

SETUP SW,(SW1-8)

OFF

YELLOW LED3

HIGH HEAT

GREEN LED4

LOW HEAT

RED LED1 EMER HEAT

OFF

1 2 3 45678

OFF

COMPONENT T E ST

- Same as code 22above.

and control center.

STATUS

", "

W/W1

", and "

OFF

DEHUM

OF FLASHES

(4)

" posi tion. If

LED2

COUNT THE NO.

OF FLASHES

". Disconnect jumper and place

reappears replace main control board.

24 V

42 FAULT

(2)

INDUCER OUTSIDE VALID

SPEED R ANGE

Indicates blower motor failed test. Check blower, wiring, Indicates inducer m otor failed test. Check inducer,

SW-1

Y/Y2

" simultaneously with

320624-101 REV. H

" in the "ON"

HUMGRY/Y2W/W1

Fig. 15—Service Label

A99108

MODEL

JUMPERS

SIZE

1-4 2-5 3-6

042040

X 042060 042080 060100 060080 060120

PL10 PL11

PL11

LEGEND

A/C AIR CONDITIONING (ADJUSTA BLE TONN AGE ) ALS AUXILIARY LIMIT SWTIC H OVERTEMP - MANUAL RESET SPST-(N.C) CF CONTINUOUS FAN (ADJUSTABLE CFM) CPU1 MAIN MICROPROCESSOR & CIRCUITRY CPU2 IGNITION MICROPROCESSOR & CIRCUITRY DE DEHUMIDIFY ENABLE - IF DE CONNECTION PROVIDED REM OV E

DEHUM DEHUMIDIFICATION CONNECTION (24VA C .02 AMPS) EAC-1 ELECTRONIC AIR CLEANER C ONNECTION (115 VAC 1.5 AMP MAX.) EAC-2 ELECTRONIC AIR C LEANER CONNECTION (COMMON) FRS FLAME ROLLOUT SWITCH - MANUAL RESET, SPST-(N.C.) FSE FLAME PROVING SENSOR ELECTRODE FU1 FUSE, 3 AMP, AUTOMOTIVE BLADE TYPE, FA CTORY INSTALLED FU2 FUSE OR CIRCUIT BREAKER CURRENT INTERRUPT DEVICE

GND EQUIPMENT GROUND GV GAS V ALVE GVR GAS VALVE RELAY, DPST-(N.O.) HI GAS VALVE HIGH STAGE OPERATOR HPS HIGH HEAT PRESSURE SWITCH, SPST-(N.O.) HSI HOT SURFACE IGNITOR (115 VAC) HSIR HOT SURFACE IGNITOR RELAY, SPST-(N.O.) HUM 24VAC HUMIDIFIER CONNECTION (.5 AMP. MAX.) HUMR HUMIDIFIER RELAY, SPST-(N.O.) ILK BLOWER ACCESS PANEL INTERLOCK SWITCH, SPST-(N.O.) IND INDUCTOR (NOTE #7) JB JUNCTION BOX LEDS LIGHT EMITTING D IOES FOR STATUS CODES LGPS LOW GAS PRESSURE SWITCH, SPST (N.O.) LPS LOW HEAT PRESSSURE SWITCH, SPST-(N.O.) LS LIMIT SWITCH, AU TO RESET, (N.C.) MTR1 MOTOR (ICM) INDUCER MTR2 MOTOR (ICM) BLOWER PCB PRINTED CIRCUIT BOARD PL1 11-CIRCUIT CONNECTOR PL2 4-CIRCUIT PRESSURE SWITCH CONNECTOR PL3 5-CIRCUIT BLOWER MTR CONNECTOR PL4 2-CIRCUIT HSI CONN ECTOR PL5 6-CIRCUIT MODEL PLUG

X XX

FRS LS

RED

GRN / YEL

9876 4321

IND.

YEL 12543

NOTE #3

RED

BLK

NOTE

1 BLK

MTR2

BLU

BRN

HI GRN/YEL

VIO

BLU

YEL

WHT

ORN

VIO

BLU

YEL

ORN

GRN/YEL

PL12

RED

ORN

VIO

YEL

BLU

PL13

JUMPER TO ENABLE DEHUM INPUT

(FIELD INSTALLED & SUPPLIED)

MTR1

FSE

1.5 AMP

WHT

PL1

BLK

1RED

A/C AND CF

SELECT. CHART

A/C C F

DEFAULTDEFAULT

1-1/2

TON

2-1/2

TON

HSI

12104 6 ORN

BLK

EAC2

EAC1

YEL

BLU

3VIO

2ORN

600 CFM 800 CFM

1000

CFM

PCB

BRN

WHT

ORN

BRN 6

4YEL

5BLU

SWITCH

POS.

213

OFF

213

OFF

213

OFF

213

OFF

YEL

PL3

GRN

2 1

PL4

YEL

GRN

PL9

ALS

RED

SWITCH

RED

POS.

213

OFF

213

OFF

213

OFF

213

OFF

FUSED DISCONNECT SWITCH

(WHEN REQ’D)

TRAN

WHT

BLK

P1 P2

ORN

BRN

FUSE 234

123

BPH

EMER. HEATMZCOMP. TEST

321

654

PL5

BLK

WHT

GND

BLOWER

OFF-DELAY

BLK

ILK

WHT

PL7

YEL

BLK

WHT

T 1

T 2

RED

1011

BRN

WHT

SEC-2

A/C AND CF

SELECT. CHAR T

A/C CF

3 TON 3-1/2 TON

4 TON

5 TON

WHT

BLK

RED

YEL

PL2

1234 HUM

BLK

RED

1200 CFM 1400 CFM

1600 CFM 2000 CFM

PL6 3-CIRCUIT COMM. CONNECTOR PL7 12-CIRCUIT INDUCER MTR CONNECTOR PL9 2-CIRCUIT HSI CONNECTOR PL10 9-CIRCUIT BLOW ER ADAPTER CONNECTOR PL11 1-CIRCUIT INDUCTOR SPLICE CONNECTOR PL12 5-CIRCUIT BLOWER POWER CONNECTOR PL1 3 16-CIRC U IT BLOWE R CTRL. CON N ECTOR SW1 MANUAL SWITC H, FAULT DISPLAY, SPST-(N.O.) SW2 MANUAL SWITC H, LOW HEAT, SPST-(N.O.) SW3 MANUAL SWITC H, BYPASS HUMIDIFIER, SPST-(N.O.) SW4 MANUAL SWITC H, EMERGENCY HEAT, SPST-(N.O.) SW5 MANUAL SWITC H, MULTIPLE ZONE, SPST-(N.O.) SW6 COMPONENT TEST, SPST-(N.O.) SW7-8 M ANUAL SWITCH, BLOWER OFF-DELAY, SPST-(N.O.) TRAN TRANSFORMER - 115V AC/24VAC

G R

WHT

Y/Y2

W/W1

SEC-1

DEHUM

FU1

24VAC-3A

LEDS

(1-4)

CF A/C

123

12345

(1-8)

FLT

LOW HE AT

PL6

JUNCTION UNMARKED TERMINAL PCB TERMINAL (FACTORY CONNECTED) FACTORY WIRING (115 VAC) FACTORY WIRING (24 VAC) FIELD WIRING (115 VAC) CONDUCTOR ON P CB FIELD WIRING SCREW TERMINAL TERMIN A L BLO C K - MA R KE D TE R MIN A L FIELD EARTH GROUND EQUIPMENT GROUND FIELD SPLICE PCB TERMINAL (FIELD CONNECTION) PLUG RECEPTACLE

HPS

YEL

LPS

NOTE #11

ORN

BRN

BLU

RED

NOTE

SELECTION CHART

NOTE #2

FU2

BLU

NOTE #11

LGPS

BLOWER

OFF-DELAY 78 OFF

OFF

RED

ORN

(WHEN USED)

TO 115 VAC FIELD DISCONNECT

ILK

SEC.

135

SEC.

180

SEC.

225

SEC.

HUM

R G

Y/Y2

W2 W/W1 C

NOTE #2

PL3

654

PL1

CPU1

12345

FRS

DEHUM

(WHEN USED)

HUMR

HSIR

GVR

L2 T 2

T 1

CPU2

B1 7

HSIR

EAC

PL10

CPU1

CPU2

5 4 3 2 1

HUMR

EMER. HEAT

PL11

EQUIPMENT GROUND

D.C. POWER SUPPL Y

SW - 4

IND

NOTE #7

EAC-1 EAC-2

ALS

D.C. POWER

GVR

EAC

PL11

PL12

PL1-9

SUPPLY

SCHEMATIC DIAGRAM

(NA TURAL GAS & PROPANE)

12 6 4

MTR1

2 1 10

PL7

PCB

NOTE #5

PL13

6 14 8

3 5

4 3

2 1

PL4 PL9

FU1

NOTE #6

PL1-11

PL1-2 PL1-10

PL2-4

PL2-2

PL2-1 PL1-1

PCB NOTE #5

NOTE #11

MTR2

2 1

SEC-1

LGPS

(WHEN USED)

NOTES:

1. If any of the original equipment wire is replaced use wire rated for 105°C.

2. Use only copper wire between the disconnect switch and the furnace junction box (JB).

3. This wire must be connected to furnace sheet metal for control to prove flame.

4. Symbols are elec trical repre se n tation onl y.

5. Solid lines, inside circuit boa rd PCB are p rinte d cir c uit boa rd trac es and are n ot d epicted as s ho w n in th e legend .

6. Replace only with a 3 AM P fus e.

7. Inductor used on all 060 or -20 airflow units.

8. Blower-on delay, gas heating 60 seconds low heat, 35 seconds high heat, cooling or heat pump 2 seconds..

9. Blower-off delay, gas h eating 90, 135, 180 or 225 s econds, cooling or heat pump 90seconds.

10. Ignition-lockout will occur after four consecutive unsuccessful trials-for-ignition. Control will auto-reset after three hours.

11. Factory connected when LGPS not used.

HSI

115VAC

TRAN

24VAC

PL1-7

NOTE #3

NOTE #11

FSE

322296-101 REV. E

SEC-2

HPS

LPS

Fig. 16—Wiring Diagram A00350

e. Turn setup switch SW-1 to ON position. (See Fig. 12 or 16

for location.) f. Jumper thermostat terminals R, W, and Y on control center. g. Manually close blower access panel door switch. Use a

piece of tape to hold switch closed.

h. h. After fault code 11 flashes for at least 2 times, remove R,

W, and Y jumpers. i. Turn setup switch SW-1 to OFF position. j. Release blower access panel door switch and replace

blower access panel.

k. Operate furnace through 1 heat cycle to check for proper

operation and check LED status. l. If furnace is operating properly and LEDs indicate proper

operation, replace main furnace door.

3. The control can also assist in troubleshooting by performing a Component Test. The Component Test will functionally operate all furnace components, except the gas valve.

a. To initiate Component Test proceed with the following:

(1.) Leave 115-v power to furnace turned on. (2.) Remove main furnace door. (3.) Remove blower access panel. (4.) Turn setup switch SW-6 to ON position. (5.) Manually close blower access panel door switch. Use

a piece of tape to hold switch closed.

(1.) The control center goes through a brief self test. This

self test takes approximately 2 sec to complete. After door switch is closed, red (microprocessor) LED briefly comes on. Then green LED comes on for 1 sec, followed by 1 sec where both the green and yellow LEDs are on. During this time, the control is checking itself.

(2.) Inducer motor operates for 20 sec at low speed,

operates for 20 sec at high speed, then turns off.

(3.) Hot surface ignitor is energized for 15 sec, then

de-energized.

(4.) Main blower motor operates for 20 sec at low speed,

operates at high speed for 20 sec, then turns off.

(5.) After component operation test is completed, 1 or

more fault codes (11, 22, 41, or 42) will flash. See service label on back of main furnace door or Fig. 15 for explanation of codes.

NOTE: To repeat component test, turn setup switch SW-6 to OFF and then back to ON.

c. After component test, perform the following:

(1.) Release blower access panel door switch and turn

setup switch SW-6 to OFF position. (2.) Replace blower access panel. (3.) Operate furnace through 1 heat cycle to check for

proper operation and check LED status. (4.) If furnace is operating properly and LEDs indicate

proper operation, replace main furnace door.

b. When items (1) through (5) above have been completed,

the following will occur:

SERVICE TRAINING

Packaged Service Training programs are an excellent way to increase your knowledge of the equipment discussed in this manual, including:

• Unit Familiarization • Maintenance

• Installation Overview • Operating Sequence A large selection of product, theory, and skills programs is available, using popular video-based formats and materials. All include video and/or slides, plus companion book.

Classroom Service Training plus "hands-on" the products in our labs can mean increased confidence that really pays dividends in faster troubleshooting, fewer callbacks. Course descriptions and schedules are in our catalog.

CALL FOR FREE CATALOG 1-800-962-9212

[ ] Packaged Service Training [ ] Classroom Service Training

Fig. 16—Wiring Diagram

A94328

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 1 4 Tab 6a 8a PC 101 Catalog No. 535-795 Printed in U.S.A. Form 58MVP–9SM Pg 16 10-00 Replaces: 58MVP-7SM

Carrier 58MVP User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual