I have a Reznor unit heater in my garage. Year 1985, electronic ignition, 195,000 btu , Model CEEXL200 . I installed it 4 months ago and it has worked fine up until we started to get weather in the 20's outside. It will start normally turning the exhaust fan on , then the ignitor lights what I call the pilot flame. I goes through a warm up, the main flame kicks on and shortly after the main fan comes on. Recently it started turning the main flame off and on intermittently. Each time it does it, I can here a relay or relays click . I turned the power off and reseated all the wires back on the terminals to make sure there was no bad connects . I checked the exhaust fan proof switch and it is letting 24v through consistenly. I unit will keep doing this until it gets the room to temp. Also , this is a Natural gas unit. It is in a fully insulated garage. Any help would be appreciated.

I have a Lennox gas furnace which came with the house I bought 4 years ago. The furnace is an old relick maybe about 10 to 15 years old or more, recently its been acting up. Come home one evening and smell gas, I checked the stove all burners was off, the house was cold so I figured it must be the furnace. I looked at the electronic tstat and it was asking for heat, I walked over to the furnace the pilot was on but the big flames was not there, eventually I tap somewhere near the valve and PUFF !!! the burners came on, but thats not all, a handyman friend of mine came over he checked and said the valve was not coming up all the way to ignite the burners and thats why we smell gas, he said its not enough gas to ignite the burner, so he dabbed a little oil on the valve spindle and said it's now working, now the next day it was back to its old tricks, but when I take a close look at the valve myself it seems to come up when the tstat calls for heat but still does not light the burners until I tap somewhere on the furnace. Any help will be greatly appreciated. Thanks. Tripper1