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271042-UUM-A-0407

USER’S INFORMATION,

MAINTENANCE AND 

SERVICE MANUAL

HIGH EFFICIENCY

TUBULAR HEAT EXCHANGER SERIES

MODELS: PV9*DH / FC9V*DH / FL9V*DH

(Two Stage Variable Speed Downflow/Horizontal)

EFFICIENCY
RATING
CERTIFIED

ISO 9001

Certified Quality

Management System

The manufacturer recommends that the user read all sec-
tions of this manual and keep the manual for future refer-
ence.

 

SECTION I: USER’S INFORMATION

SAFETY

1.

The furnace area must be kept clear and free of combustible mate-
rials, gasoline and other flammable vapors and liquids.

2.

Insulating materials may be combustible. The furnace must be
kept free and clear of insulating materials. The furnace area must
be examined when installed in an attic or other insulated space or
when insulation is added to be sure that the insulation material has
been kept away from the furnace.

3.

The furnace needs air for combustion in order to operate properly
and safely. Do not block or obstruct air openings on the furnace,
air openings to the area where the furnace is installed, or spaces
around the furnace.

4.

Follow the instructions exactly as shown on the OPERATING
INSTRUCTION LABEL or the Start-up and Shutdown Instructions
on Page 3 of this manual when lighting the furnace or turning the
furnace off.

5.

Should the gas supply fail to shut off or if overheating occurs, shut
off the gas valve to the furnace before shutting off the electrical
supply.

6.

Do not use this furnace if any part has been under water. A flood-
damaged furnace is extremely dangerous. Attempts to use the fur-
nace can result in fire or explosion. A qualified service agency
should be contacted to inspect the furnace and replace all gas
controls, control system parts, electrical parts that have been wet
or the furnace if deemed necessary.

FIRE OR EXPLOSION HAZARD - 

Failure to follow

safety warnings exactly could result in serious injury,
death, or property damage.

— Do not store or use gasoline or other flammable

vapors and liquids in the vicinity of this or any
other appliance.

—  WHAT TO DO IF YOU SMELL GAS:

Do not try to light any appliance.

Do not touch any electrical switch; do not use any 
phone (including cell phone) in your building.

Leave the building immediately.

Immediately call your gas supplier from a neighbor’s 
phone. Follow the gas supplier’s instructions.

If you cannot reach your gas supplier, call the fire 
department.

—  Installation and service must be performed by a 

qualified installer, service agency or the gas sup-
plier.

TABLE OF CONTENTS

CONTACT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

USER’S INFORMATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

SAFETY   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTRUCTIONS FOR EXAMINING THE 
FURNACE INSTALLATION   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
HOW YOUR GAS FURNACE WORKS   . . . . . . . . . . . . . . . . . . . . . . 3
START-UP AND SHUTDOWN INSTRUCTIONS  . . . . . . . . . . . . . . . 3

Read the Instructions Below Before Trying to Start the Furnace . . 3
Operating Instructions: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
To Turn Off the Appliance: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

FURNACE USER MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Blower Care  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Air Filters  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Removing Filters   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Motor Lubrication  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SERVICE AND MAINTENANCE MANUAL . . . . . . . . . . . . . . . . . . . . . 5

SAFETY SECTION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
FURNACE MAINTENANCE SECTION . . . . . . . . . . . . . . . . . . . . . . . 5
FURNACE CLEANING SECTION   . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Burner Removal/Cleaning   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Cleaning the Heat Exchanger   . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Cleaning the Secondary Heat Exchanger   . . . . . . . . . . . . . . . . . . .5
Cleaning the Vent / Air Intake System  . . . . . . . . . . . . . . . . . . . . . .5

SEQUENCE OF OPERATION   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
CONTROL BOARD  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
HEATING AIRFLOW  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
ADJUSTMENT OF FAN CONTROL SETTINGS 6

Heating Indoor Fan Off Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Continuous Blower Operation   . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Delay Tap Selection  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Humidistat   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Hot Surface Ignition System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

TROUBLESHOOTING   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
FURNACE CONTROL DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . .8
DIAGNOSTIC FAULT CODE STORAGE AND RETRIEVAL   . . . . . .8

REPLACEMENT PARTS LIST   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
WIRING DIAGRAM   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
LIMITED WARRANTY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

CONTACT INFORMATION

Go to website at www.york.com click on “contact”, then click on “contact form” and follow the instructions.

Contact us by mail:

York International

Consumer Relations

5005 York Drive

Norman, OK 73069

Summary of Contents for FC9V DH Series

Page 1: ...deemed necessary FIRE OR EXPLOSION HAZARD Failure to follow safety warnings exactly could result in serious injury death or property damage Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone including cell phone in your...

Page 2: ...nace casing making sure the physical support is sound without sagging cracks or gaps Examine the furnace base making sure it is physically sound without cracks gaps or sagging and has a good seal 5 Examine the furnace casing for obvious signs of deterioration 6 Examine the burner flames to make sure they are in good adjust ment Refer to the pictorial sketch shown in Figure 2 as a compari son to th...

Page 3: ...ructions 1 STOP Read the safety information above 2 Set the thermostat to the lowest setting 3 Turn off all electric power to the appliance 4 Remove burner door 5 Move gas control switch to the OFF position Do not force 6 Wait five 5 minutes to clear out any gas If you then smell gas STOP Follow B in the safety information above If you don t smell gas go to next step 7 Move gas control switch to t...

Page 4: ...hed to the cas ing of the furnace or placed in the return air duct You can gain access to the filter by pulling on the door or unscrewing the retaining screw then slide the filter s out of its channel Replace throw away filter s with the same size new filter s Throw away filter s may be replaced with cleanable filter s at this time Cleanable filter s may be cleaned as described in the manufacturer...

Page 5: ...nd the rear heat exchanger tubes Then vacuum loose the scale and dirt from each tube 9 Replace all components in reverse order Reconnect all wiring 10 Restore electrical power and gas supply to the furnace 11 Check furnace operation Cleaning the Secondary Heat Exchanger 1 Follow steps 1 7 under cleaning the Heat Exchanger 2 Remove the vent piping from the vent blower housing Disconnect the drain l...

Page 6: ...The thermostat opens the R to Y and R to G circuits The Outdoor Unit is de energized The 60 second Blower Off Delay timing circuit is initiated After 60 seconds the Cool and EAC relays are de energized CONTROL BOARD Variable speed motors will adjust the motor speed in order to maintain the indoor fan CFM The control board is used to control the blower speed thus the CFM when the unit is operating ...

Page 7: ... a higher speed will take 30 seconds and any ramp down to a lower speed or off will take 60 seconds Tap D is the normal profile best suited for most of the country where neither excessive humidity nor extremely dry conditions are the norm On a call for cooling the motor will ramp up to 63 of full capacity and will stay there for 90 seconds then will ramp up to full capacity At the end of the cooli...

Page 8: ...out Low gas pressure faulty gas valve faulty hot surface ignitor or burner problem may cause this The furnace will lock out for one hour and then restart 8 RED FLASHES This fault is indicated if the flame is lost 5 times 4 recycles during the heating cycle This could be caused by low gas pressure or faulty gas valve The furnace will lock out for one hour and then restart 9 RED FLASHES Indicates re...

Page 9: ...ucts Group 9 SECTION III REPLACEMENT PARTS LIST 70 34 57 2 59 61 54 5 26 68 8 52 62 12 7 25 27 13A 26 51 25 71 1 15 50 51 18 17 20 45 68 47 49 29 13 5 8 35 52 4 2 41 42 43 46 44 16 14 3 10 13 34 9 6 19 22 28 29 32 31 48 53 58 62 49 ...

Page 10: ... 39 MISCELLANEOUS 40 41 RESTRICTOR COMBUSTION BLWR 42 GASKET COMBUSTION BLOWER 43 GASKET CONDENSATE PAN 44 GASKET CONDENSING COIL 45 GASKET GAS CONTROLS 46 GASKET UPPER COND PAN 2 Req d 47 GASKET COMBUSTION AIR TRANSITION 48 GROMMET MANIFOLD SEAL 49 PLUG WINDOW CLEAR 1 5 50 GROMMET MOTOR MOUNT 3 Req d 51 FERRULE MOTOR MOUNT 3 Req d 52 PAN CONDENSATE 53 ORIFICE BURNER Natural 45 54 TRAP CONDENSATE ...

Page 11: ...ENT TERMINATION KIT 2 ALL MODELS 1CB0317 COMBUSTIBLE FLOOR BASE 17 1 2 CABINET 1CB0321 21 CABINET 1CB0324 24 1 2 CABINET 1TK0917 COIL TRANSITION KIT 17 1 2 CABINET 1TK0921 21 CABINET 1TK0924 24 1 2 CABINET REPLACEMENT PART CONTACT INFORMATION This is a generic parts list To request a complete parts list refer to the contact information below Visit our website at www source1parts com for the follow...

Page 12: ...271042 UUM A 0407 12 Unitary Products Group SECTION IV WIRING DIAGRAM FIGURE 8 Wiring Diagram ...

Page 13: ...271042 UUM A 0407 Unitary Products Group 13 NOTES ...

Page 14: ...271042 UUM A 0407 14 Unitary Products Group NOTES ...

Page 15: ...271042 UUM A 0407 Unitary Products Group 15 NOTES ...

Page 16: ...nly to products installed in the United States and Canada EXCLUSIONS This warranty does not cover any 1 Shipping labor or material charges 2 Damages resulting from transportation installation or servicing 3 Damages resulting from accident abuse fire flood alteration or acts of God tampering altering defacing or removing the product serial number will serve to void this warranty 4 Damages resulting...

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