Posted by OH Boy on February 05, 2019 at 13:10:14 from (174.232.4.91):
In Reply to: HVAC Furnace Questions posted by Crazy Horse on February 05, 2019 at 07:31:23:
Most likely, your draft inducer bearings are starting to fail. They can start to seize up a little after the motor has been running for a while. When the draft inducer turns too slowly, the vaccuum level in the heat exchanger drops off causing the pressure switch to open. This causes the furnace to shut down. It may restart when it cools down a little.
It is also possible that the pressure switch is malfunctioning.
I found one the other day where the tube that goes to the pressure switch was plugged up.
A lot of things can cause pressure switch shut downs.
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Today's Featured Article - Tractor Profile: Silver King - by Staff. Silver King tractors were produced by the Fate-Root-Heath Company of Plymouth, Ohio. The company was founded by John Fate in 1884 and was originally called the "J.D. Fate Company". After several mergers over the years, the final company name of Fate-Root-Heath came about in 1919. The first tractor produced was actually called the "Plymouth" tractor and was powered by a 20 HP 4-cylinder engine with a 3x4" bore and stroke. The four speed transmission had a top speed of 25 mph! After more t
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