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38. Reinstall burner box cover.
39. Reconnect 2 pin plug to gas valve.
40. Replace the blower compartment access panel.
41. Refer to instruction on verifying gas and electrical
connections when re-establishing supplies.
42. Follow lighting instructions to light and operate furnace
for 5 minutes to ensure that heat exchanger is clean
and dry and that furnace is operating properly.
43. Replace heating compartment access panel.
Cleaning the Burner Assembly
1.
Turn off electrical and gas power supplies to furnace.
Remove upper and lower furnace access panels.
2.
Disconnect the 2 pin plug from the gas valve.
3.
Remove the burner box cover.
4.
Disconnect the gas supply line from the gas valve.
Remove gas valve/manifold assembly.
5.
Mark and disconnect sensor wire from the sensor.
Disconnect wires from flame rollout switches.
6.
Remove the four screws that secure the burner box
assembly to the vest panel. Remove burner box from
the unit.
7.
Use the soft brush attachment on a vacuum cleaner
to gently clean the face of the burners. Visually
inspect the inside of the burners and crossovers for
any blockage caused by foreign matter. Remove any
blockage.
8.
Reinstall the burner box assembly using the existing
four screws. Make sure that the burners line up in the
center of the burner ports.
9.
Reconnect the sensor wire and reconnect the 2 pin
plug to the ignitor wiring harness. Reconnect wires to
flame rollout switches.
10. Reinstall the gas valve manifold assembly. Reconnect
the gas supply line to the gas valve. Reinstall the
burner box cover.
11. Reconnect 2 pin plug to gas valve.
12. Replace the blower compartment access panel.
13. Refer to instruction on verifying gas and electrical
connections when re-establishing supplies.
14. Follow lighting instructions to light and operate furnace
for 5 minutes to ensure that heat exchanger is clean
and dry and that furnace is operating properly.
15. Replace heating compartment access panel.
Page 58 of 74
Planned Service
A service technician should check the following items
during an annual inspection. Power to the unit must be
shut off for the service technician's safety.
Burners - Must be inspected for rust, dirt, or signs of water.
Vent pipe - Must be inspected for signs of water, cracked,
damaged or sagging pipe, or disconnected joints.
Unit appearance - Must be inspected for rust, dirt, signs of
water, burnt or damaged wires, or components.
Blower access door - Must be properly in place and
provide a seal between the return air and the room where
the furnace is installed.
Return air duct - Must be properly attached and provide
an air seal to the unit.
Operating performance - Unit must be observed during
operation to monitor proper performance of the unit and
the vent system.
Combustion gases - Flue products must be analyzed and
compared to the unit specifications.
Problems detected during the inspection may make it
necessary to temporarily shut down the furnace until the
items can be repaired or replaced.
Instruct the homeowners to pay attention to their furnace.
Situations can arise between annual furnace inspections
that may result in unsafe operation.
Integrated Control Diagnostic Codes
Press the diagnostic push button and hold it to cycle
through a menu of options. Every five seconds a new
menu item will be displayed.
Release the button when the desired mode is displayed.
When a solid "P" is displayed, the furnace capacity/ size is
programmed.
When the solid "E" is displayed, the control enters the Error
Code Recall mode. Error Code Recall mode menu options:
No change (displaying error history) remains in Error Code
Recall mode; solid "b" exits Error Code Recall mode; and
solid "c" clears the error history. Must press button while
flashing "c" is displayed to clear error codes.
When the solid "-" is displayed, the control enters the Field
Test mode. Field Test mode menu options: Solid "C" starts
pressure switch calibration; blinking "-" exits Field Test
mode.
Issue 2346
508364-01
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