Hi, I have an old HBSMITH furnace made back in 1992 or so. It has a honeywell VR8300a continous pliot gas control and a johnson automatic damper. The problem: pilot stays on but flame thus no heat. What I observe prior the issue: pilot is on, thermostat turned on, furnance makes a few noises (24v transformer turning on, automatic damper moving with green led on), a few seconds later, flame on. What has happen: The furnance turns on until it reach the desire temperature set by the thermostat, and then the furnance stops however a few moments later the pilot goes out. Temperature drops, furnace does not start pressumably because the pilot is not lit. Turning off the thermostat and relit the pilot works but it will soon stop after desire temperature is reach and the pilot goes out. Now: The automatic damper no longer lit green to show that the vent is open. What I have done: Clean the pilot and replaced the thermocoupler. The pilot now stays on. I have very limited knowledge about how this whole thing should work. My guess on how this gas furnace works is: 1) Lit pilot, thermocouple sends out small volt to open small gas valve so the pilot stays on. 2) turn on the thermostat which turns on 24v transformer 3) The automatic damper opens the vent, send signal to 24v transformer which in turns engerized the main gas valve to open. 3)House has heat. So the pilot stays on, but the automatic damper does not have green light on which means the vents are closed. There is an emergency process to open the vent manual. It basically disable motor and allow the vent to be manually adjusted. It also states that when the vents are open, the green lit should be on. I try the manual process but the light does not come on. If I put the vent on open position and put it in automatic, the motor will turn the vent to closed position. I can only think of 3 things that went wrong in order listed: 1) damper is defective hence no green light which won't send signal to 24 volt transformer to turn on the main valve. 2) 24 volt transformer is defective. 3) Honeywell pilot gas control main valve is defective. Before yesterday, I have zero knowledge about how a furnace works except that when you turn on the thermostat it turns on the furnace which produce heat. Please help.

Last year my heater started to buzz and would not ignite. I realized quickly that the the black, plastic, wheel in the front was stuck (the wheel moves freely when I turn the power off to the heater). I've noticed that this happens usually in the morning when I adjust my heat. It runs all right, making a slight noise, the rest of the day but it does run. The way I get it "unstuck" is by spinning it a few times while the power is on. Kind of a jump start of sorts. This usually works fine. However, it is getting worse. I have found a few stores online to replace the part (part # HC21ZE117) but I've read here and there that it might be a power issue and not the inducer blower motor. It really doesn't look that hard to replace. I just don't want to invest $88 or more and then find out that it wasn't that. Anybody have any suggestions? Has anybody had similar issues? John