PG92MSA: Installation, Start-up, Operating and Service and Maintenance Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
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d. Press menu/select button until (FLt) is displayed.
e. Press Next/Option button to cycle through the fault history. 
Faults remain in memory for 72 hours of powered operation after 
the last fault occurs. Faults may be manually cleared by selecting 
(CLr) with the menu/select button.
CARE AND MAINTENANCE
For  continuing  high  performance  and  to  minimize  possible  furnace
failure,  periodic  maintenance  must  be  performed  on  this  furnace.
Consult your local dealer about proper frequency of maintenance and the
availability of a maintenance contract.
The minimum maintenance on this furnace is as follows: 
1. Check  and  clean  air  filter  each  month  or  more  frequently  if
required. Replace if torn.
2. Check  blower  motor  and  wheel  for  cleanliness  each  heating  and
cooling season. Clean as necessary.
3. Check electrical connections  for tightness  and controls  for proper
operation each heating season. Service as necessary.
4. Inspect  burner  compartment  before  each  heating  season  for  rust,
corrosion,  soot  or  excessive  dust.  If  necessary,  have  furnace  and
burner serviced by a qualified service agency.
5. Inspect  the  vent  pipe/vent  system  before  each  heating  season  for
water  leakage,  sagging  pipes  or  broken  fittings.  Have  vent
pipes/vent system serviced by a qualified service agency.
6. Inspect any accessories attached to the furnace such as a humidifier
or electronic air cleaner. Perform any service or maintenance to the
accessories as recommended in the accessory instructions. 
Cleaning and/or Replacing Air Filter
The air filter type may vary depending on the application or orientation.
The filter is external to the furnace casing. There are no provisions for an
internal  filter  with  this  furnace.  See  “Filter  Arrangement”  under  the
“Installation” section of this manual.
NOTE: If the filter has an airflow direction arrow, the arrow must point
toward the blower. 
To clean or replace filters, proceed as follows: 
1. Turn off electrical supply to furnace.
2. Remove filter cabinet door.
3. Slide filter out of cabinet.
CAUTION
!
SHOCK HAZARD
Failure to follow this caution could result in personal injury.
Do  not  tape  or  permanently  allow  the  door  switch  to  be  bypassed.
Temporarily press the door switch with one hand while accessing the
service  buttons  with  your  other  hand.  Do  not  touch  uninsulated
electrical components.
WARNING
!
FIRE OR EXPLOSION HAZARD
Failure  to  follow  this  warning  could  result  in  personal  injury,  death
and/or property damage. 
Never store flammable or combustible materials 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.  Exposure  to  these  materials  could  lead  to
corrosion of the heat exchangers. 
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet  metal parts  may  have sharp  edges or burrs.  Use care and  wear
appropriate  protective  clothing,  safety  glasses  and  gloves  when
handling parts, and servicing furnaces. 
WARNING
!
ELECTRICAL SHOCK AND FIRE HAZARD
Failure  to  follow  this  warning  could  result  in  personal  injury,  death,
and/or property damage. 
Turn off the gas and electrical supplies to the furnace and install lockout
tag before performing any maintenance or service. Follow the operating
instructions on the label attached to the furnace. 
WARNING
!
CARBON MONOXIDE POISONING AND FIRE 
HAZARD
Failure  to  follow  this  warning  could  result  in  personal  injury,  death
and/or property damage. 
Never  operate  furnace  without  a  filter  or  filtration  device  installed.
Never  operate  a  furnace  with  filter  or  filtration  device  access  doors
removed.
WARNING
!
CARBON MONOXIDE POISONING AND FIRE 
HAZARD
Failure  to  follow  this  warning  could  result  in  personal  injury,  death
and/or property damage. 
Never  operate  furnace  without  a  filter  or  filtration  device  installed.
Never  operate  a  furnace  with  filter  or  filtration  device  access  doors
removed.
WARNING
!
ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury or death,
or property damage. 
Before  installing,  modifying,  or  servicing  system,  main  electrical
disconnect switch must be in the OFF position and install a lockout tag.
There  may  be  more  than  one  disconnect  switch.  Lock  out  and  tag
switch  with  a  suitable  warning  label.  Verify  proper  operation  after
servicing. Always  reinstall  access  doors  after  completing  service  and
maintenance.