Forum Discussion
bycrackey
Dec 25, 2013Explorer
BURNER RUNS BUT FAILS TO IGNITE
Low voltage Correct Power Supply
Gas pressure incorrect Set pressure to minimum of 11" W.C. with all appliances running. Replace regulator if not obtainable.
Furnace ground wires not secure Clean and secure grounds
Air intake restricted Clean air intake
Motor running slow Correct polarity
Combustion air wheel loose Check voltage, if 12 VDC while running, replace motor
Exhaust blocked Clean exhaust
Sail switch defective Reposition and tighten !!!
Limit switch defective Replace switch !!!
Edge connector on circuit board dirty Clean with pencil eraser
Circuit board defective Clean plug contacts. If still defective, replace (check on board tester when possible)
Gas valve defective Replace valve or valve coil
Main burner orifice blocked Clean main burner orifice or replace
High tension lead wire defective Replace wire
Electrode out of adjustment Adjust electrode (don't crack the porcelain)
Electrode defective or cracked Replace electrode
Obstructed burner head Clean burner head
Low voltage Correct Power Supply
Gas pressure incorrect Set pressure to minimum of 11" W.C. with all appliances running. Replace regulator if not obtainable.
Furnace ground wires not secure Clean and secure grounds
Air intake restricted Clean air intake
Motor running slow Correct polarity
Combustion air wheel loose Check voltage, if 12 VDC while running, replace motor
Exhaust blocked Clean exhaust
Sail switch defective Reposition and tighten !!!
Limit switch defective Replace switch !!!
Edge connector on circuit board dirty Clean with pencil eraser
Circuit board defective Clean plug contacts. If still defective, replace (check on board tester when possible)
Gas valve defective Replace valve or valve coil
Main burner orifice blocked Clean main burner orifice or replace
High tension lead wire defective Replace wire
Electrode out of adjustment Adjust electrode (don't crack the porcelain)
Electrode defective or cracked Replace electrode
Obstructed burner head Clean burner head
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