My girlfreinds house is old and the furnace is a Royal Jet Flow FG-2-55 Gravity Vented natural gas fired furnace.
I cleaned the thermal coupler and flame sensor and the furnace now burns longer and works great! Except, now when it starts the gas flows for about 1 to 2 seconds before it ignites. This causes a good flash and about a 6-inch flame flashs out of the venting. Needless to say this is not good.
did I do something wrong, or do I need to adjust the pilot flame making it larger or do I need to replace something?
Try cleaning the crossovers between the burners. Also look closely at the flame and make sure that the burner is firing all the way to the pilot. Sometimes its just a few little holes that vent a little gas to give the flame a path to follow will be stopped up and cause the condition you describe
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they usually have a manual perazo ignitor simular to a gas barbeque.. put the gas valve on pilot, depend the knob and hold it, depends the igniter epeatly until the pilot litghs, hold the knob in when u see the pilot flame for about one m,inute , release the knob, the turn the knob to the "on" posistion
it would sound like the pressure switch is not working you can take off ther tubes and by hand put a small drill bit in the and clean the switch , some times this works , on some you can jump out the switch and try and fool it in too working
Hi, normally when you turn the gas off at the flex line valve and leave it off for awhile, the gas has to clear the gas valve and lines up to the pilot. Purge its self of air before it will light again. It will take the electronic ignition several clicks and more before there is enough gas to light the pilot and then open the main gas valve to fire the burners. Tell me, what kind of gas furnace is this when you speak of water? you say the site glass was full and you had to drain it and then the ignitor kept on clicking when it normally only took one click to light it. Please let me know the style as in a split system, a package unit, all in one, or what you have. I will wait to hear back from you. If the pilot does not light right away, then yes let it continue to click and see if it will light. On a heater with the electronic ignition control module on it or a circuit board, this is what tells the pilot coil to energize to light the pilot. It will send power to the pilot coil to open and let gas through to light and same for the main gas valve, will get a signal to open when the pilot is on. It will not open unless the pilot is lite for saftey. I will wait for you're responce. Shastalaker7
Based on your description I would guess that there is a "leak" somewhere between the gas valve and the actual fire. Use soap bubbles to check the connections at the gas valve. Also check the gaskets in the Gas valve the same way. Lastly there may be a cracked or misaligned burner causing the "leak". Best of Luck!