All installations and services must be performed by qualified service personnel.
A.ELECTRICAL:
1.Check diagnostic code through view port prior to removing access door.
2.Check all wiring for loose connections and any signs of damage or unusual wear.
3.Check for correct voltage at the furnace when operating.
4.Check
5.Check for correct operation and proper settings (if manually adjustable) of all controls.
Shut off gas and disconnect power before continuing.
B.GENERAL INSPECTION
1.VENT PIPE COMBUSTION AIR INTAKE
a.Remove the vent and check the vent for signs of carbon
b.The entire length of vent and combustion air inlet pipe and their terminations should be inspected for restrictions, loose or loosely sealed joints, carbon
2.CONDENSATE LINE/TRAP ASSEMBLY
The condensate line must be inspected to make sure it is not blocked. All of the lines should be flushed with water to remove any
3. BURNERS
If it appears that material is accumulating in the burner box, the burner box cover can be removed and the box and burners can be vacuumed. (NOTE: The igniter
&flame sensor must be removed before removing the assembly.) If necessary, the burner assembly can be removed by taking out the two screws/one on each bracket at the bottom of the box. Assembly must be pulled & tilted away from the burner compartment in order to remove from box. If necessary, the individual tubes can be cleaned out by using compressed air.Care must be taken not to damage the igniter.
4. INDUCER BLOWER ASSEMBLY
Inspect the pressure switch and drain tubing connections and inspect the blower/assembly for warpage, deterioration and carbon or other
49
