GM9S96 Service Manual
SERVICING
43
WARNING
3. Place the unit into a heating cycle.
4. -
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
or poor grounding.
6. If absolutely no reading, check for continuity on all
components and if good - replace ignition control
module.
Contaminated fuel or combustion air can create a
-
with steel wool.
WARNING
-
-
-
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.
•
• 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.
WARNING
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.
inadequate heating or cooling performance.