Heat came on
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Heat came on
From York County,PA near Baltimore
I turned on my central AC today, (not for the first time this year) and my oil furnace came on. I tried a new tstat to no avail. Even with the tstat disconnected completely, when I hit the main switch to the unit the furnace comes on. Is there some relay sticking?
I turned on my central AC today, (not for the first time this year) and my oil furnace came on. I tried a new tstat to no avail. Even with the tstat disconnected completely, when I hit the main switch to the unit the furnace comes on. Is there some relay sticking?
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Is there some relay sticking?
NOTE! You posted in the furnace section so I am assuming that you have a forced hot AIR furnace and NOT a hot WATER BOILER. If you DO have a boiler then the above test will not work.
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I took your advice and tested your theory. It was correct!!! The small relay that actually sends the power to the Furnace ignition box was stuck. When I pryed open the plastic tabs and looked inside at the selonoid, it was very damp and rusty. I guess that was caused by the extreme heat/humidity we've had here it PA. Also I've had some slight icing and water condensation going on, so I guess it's time for a Recharge on the system. Thanks for pointing me in the right direction!!!