Instructions / Assembly
48
1. Disconnect all power to the furnace. 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
furnace away from 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 furnace. Return any old or new
controls to their containers before touching any ungrounded
object.
DIAGNOSTIC CHART
HIGH VOLTAGE !
T
O
AVOID
PERSONAL
INJURY
OR
DEATH
DUE
TO
ELECTRICAL
SHOCK
,
DISCONNECT
ELECTRICAL
POWER
BEFORE
PERFORMING
ANY
SERVICE
OR
MAINTENANCE
.
WARNING
Refer to the Troubleshooting Chart in the back of this manual
for assistance in determining the source of unit operational
problems. The dual 7-segment LED display will display an
error code that may contain a letter and number. The error
code may be used to assist in troubleshooting the unit.
RESETTING FROM LOCKOUT
Furnace lockout results when a furnace is unable to achieve
ignition after three attempts during a single call for heat. It
is characterized by a non-functioning furnace and a E 0 code
displayed on the dual 7-segment display. 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.
3. Manual thermostat cycle. Lower the thermostat so that
there is no longer a call for heat for 1 -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
Troubleshooting Chart for aid in determining the cause.
M
AINTENANCE
ANNUAL I NSPECTION
T
O
AVOID
ELECTRICAL
SHOCK
,
INJURY
OR
DEATH
,
DISCONNECT
ELECTRICAL
POWER
BEFORE
PERFORMING
ANY
MAINTENANCE
. I
F
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
.
WARNING
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.
• Drainage system. Check for blockage and/or leakage.
Check hose connections at and internal to furnace.
• Wiring. Check electrical connections for tightness and/
or corrosion. Check wires for damage.
• Filters.
FILTERS
FILTER MAINTENANCE
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.
FILTER REMOVAL
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.