SERVICING
43
WARNING
Line Voltage now present.
3. Place the unit into a heating cycle.
4.
As soon as flame is established a micro-amp read
-
ing should be evident once proof of flame (micro-amp
reading) is established, the hot surface ignitor will be
de-energized.
5. The Integrated Ignition controls will have 1 to 4 mi-
cro-amps. If the micro-amp reading is less than the
minimum specified, check for high resistance wiring
connections, sensor to burner gap, dirty flame sensor,
or poor grounding.
6. If absolutely no reading, check for continuity on all
components and if good - replace ignition control
module.
NOTE:
Contaminated fuel or combustion air can create a
nearly invisible coating on the flame sensor. This coating
works as an insulator causing a loss in the flame sense sig
-
nal. If this situation occurs the flame sensor must be cleaned
with steel wool.
WARNING
HIGH VOLTAGE
Disconnect ALL power before servicing or in
-
stalling this unit. Multiple power sources may
be present. Failure to do so may cause proper
-
ty damage, personal injury or death.
CAUTION
If you must handle the igniter, handle with care. Touching
the igniter body with bare fingers, rough handling, or vibra
-
tion could result in early ingitor failure. Only a qualified
servicer should ever handle the igniter.
ANNUAL 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 or-
der 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.
•
Combustion air intake pipe system (where applicable).
Check for blockage and/or leakage. Check the outside
termination and the connection at 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.
AIR FILTER
WARNING
Never operate furnace without a filter installed as dust
and lint will build up on internal parts resulting in loss of
efficiency, equipment damage, and possible fire.
Filters must be used with this furnace. Filters do not ship
with these furnaces but must be provided by the installer for
proper furnace operation.
Remember that dirty filters are the most common cause of
inadequate heating or cooling performance.
