Residential gas unit blows constant cool air honeywell pilot lite will not work

Lets try to light pilot again
Set thermostat to call for heat
Find gas valve See "on" "pilot" "off" turn to off wait 3 min Look for tube to pilot (Use long match or tape match to stick in to pilot.) Turn Knob from "off" to "pilot" or depress knob if that's your setup. Lite pilot, keep button depressed for 60 sec with pilot lit to heat thermo couple. Slowly release look for pilot now lit Then turn gas valve to "ON" and heat should start. If the burner does not ignite its probably the thermocouple couple that needs replaced This device senses heat at the LIT pilot to let the gas valve turn on fully to heat furnace safety device. If you try this a couple of times the thermocouple couple is bad or your not getting gas or the gas valve is bad which is very rare

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