29
Refer to the troubleshooting chart on the following pages 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 refer to a specific code.
R
ESETTING
F
ROM
L
OCKOUT
Furnace lockout results when a furnace is unable to achieve ignition
after three attempts, or when it has lost flame five times during a
single call for heat. It is characterized by a non-functioning furnace
and a one flash diagnostic LED code from the red LED. If the
furnace is in “lockout”, it will (or can be) reset in any of the following
ways.
1. Automatic reset. The integrated control module will
automatically reset itself and attempt to resume normal
operations following a one hour lockout period.
2. Manual power interruption. Interrupt 115 volt power to the
furnace for 0 - 20 seconds.
3. Manual thermostat cycle. Lower the thermostat so that
there is no longer a call for heat for 0 -20 seconds then
reset to previous setting.
NOTE:
If the condition which originally caused the lockout still
exists, the control will return to lockout. Refer to the Diagnostic
Chart for aid in determining the cause.
XVI. MAINTENANCE
WARNING
T
O AVOID ELECTRICAL SHOCK, INJURY OR DEATH, DISCONNECT ELECTRICAL
POWER BEFORE PERFORMING ANY MAINTENANCE. IF YOU MUST HANDLE THE
IGNITER, HANDLE WITH CARE.
T
OUCHING THE IGNITER ELEMENT WITH BARE
FINGERS, ROUGH HANDLING, OR VIBRATION COULD DAMAGE THE IGNITER
RESULTING IN PREMATURE FAILURE.
O
NLY A QUALIFIED SERVICER SHOULD
EVER HANDLE THE IGNITER.
A
NNUAL
INSPECTION
The furnace should be inspected by a qualified installer, or service
agency at least once per year. This check should be performed at
the beginning of the heating season. This will ensure that all furnace
components are in proper working order and that the heating system
functions appropriately. Pay particular attention to the following
items. Repair or service as necessary.
• Flue pipe system. Check for blockage and/or leakage.
Check the outside termination and the connections at and
internal to the furnace.
• Heat exchanger. Check for corrosion and/or buildup within
the heat exchanger passageways.
• Burners. Check for proper ignition, burner flame, and flame
sense.
• Wiring. Check electrical connections for tightness and/or
corrosion. Check wires for damage.
• Filters.
F
ILTERS
WARNING
T
O AVOID PROPERTY DAMAGE, PERSONAL INJURY OR DEATH, DISCONNECT
ELECTRICAL POWER BEFORE REMOVING FILTERS.
N
EVER OPERATE FURNACE
WITHOUT A FILTER INSTALLED BECAUSE DUST AND LINT WILL BUILD UP ON
INTERNAL PARTS RESULTING IN LOSS OF EFFICIENCY, EQUIPMENT DAMAGE
AND POSSIBLE FIRE.
A return air filter is not supplied with this furnace; however, there
must be a means of filtering all of the return air. The installer will
supply filter(s) at the time of installation.
F
ILTER
M
AINTENANCE
Improper filter maintenance is the most common cause of
inadequate heating or cooling performance. Filters should be
cleaned (permanent) or replaced (disposable) every two months
or as required. When replacing a filter, it must be replaced with a
filter of the same type and size.
WARNING
T
O PREVENT PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO
ELECTRICAL SHOCK, DISCONNECT ELECTRICAL POWER TO THE FURNACE
BEFORE REMOVING THE FILTER OR PERFORMING ANY OTHER MAINTENANCE.
Become familiar with filter location and procedures for removal,
cleaning and replacing them. If help is needed, contact the installer
of the furnace or a qualified servicer.
F
ILTER
R
EMOVAL
Depending on the installation, differing filter arrangements can be
applied. Filters can be installed in either the central return register
or a side panel external filter rack (upflow only). A media air filter or
electronic air cleaner can be used as an alternate filter. Follow the
filter sizes given in the Recommended Minimum Filter size table to
ensure proper unit performance.
To remove filters from an external filter rack in an upright upflow
installation, follow the directions provided with external filter rack
kit. To remove internal filters see
Internal Filter Removal
section.
Internal filters are an accessory item and are not included with
your furnace. For further details, see your distributor.
U
PRIGHT
F
ILTER
R
EMOVAL
To remove filters from an external filter rack in an upright upflow
installation, follow the directions provided with external filter rack
kit.
Clean, wash and dry a permanent filter. When using a metal filter,
both sides should be sprayed with a dust adhesive as recommended
on adhesive container. Spray adhesives for use with permanent
metal filters can be found at some hardware stores. BE SURE
AIRFLOW DIRECTION ARROW POINTS TOWARDS THE
BLOWER.
Inspect filter. If your dirty filter is the disposable type, replace dirty
with the same type and size filter. If your dirty filter is a permanent
metal filter, clean as follows:
• Wash, rinse, and dry the permanent filters. Both sides should
then be sprayed with a filter adhesive as is recommended
on the adhesive container. Many hardware stores stock
spray adhesives for use with permanent filters.
• If badly torn or uncleanable, these filters must be replaced
by equal size permanent, high velocity filters. Throwaway
filters must not be used as replacement for permanent filters.
Under normal use, permanent filters should last for several
years.
I
NDUCED
D
RAFT
AND
C
IRCULATOR
B
LOWER
M
OTORS
The bearings in the induced draft blower and circulator blower
motors are permanently lubricated by the manufacturer. No further
lubrication is required. Check motor windings for accumulation of
dust which may cause overheating. Clean as necessary.
