Jan 15, 2021 - 09:32 AM
Please review page (7) and check the burner function.
a) Erratic main burner flame supttering vellow: 1) Incorrect gas pressure - check for correct gas pressure coming through main burner orifice; should be 11 " WC. 2) Check for blockage or obstruction in main burner orifice. Remove and clean with alcohol and compressed air. Do not enlarge orifice hole. Clean main burner if necessary. 3) Misalignment of main burner - check for correct alignment. 4) Burner flashback - check main burner orifice. Must be properly seated into main burner - (straight in line with tube). 5) Sooting - can be caused by thermostat not shutting off completely or other obstructions or blockage in flue box.
b) Main burner will not ignite: 1) Incorrect gas pressure - check for correct gas pressure coming through main burner orifice; should be 1 1 " WC. 2) Main burner orifice could be blocked - remove and clean with alcohol or compressed air. Do not enlarge orifice hole. 3) Lint or dirt in burner tube - clean burner tube. 4) Gas control valve defective - no gas flow through valve. Remove and replace.