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Lennox Pressure Switch Trouble? Lennox Pressure Switch Trouble?
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Old 12-30-2006, 08:13 AM   #1
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Trade: homeowner
 
Join Date: Dec 2006
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Question Lennox Pressure Switch Trouble?
No heat. If you turn the main switch off and back on the inducer motor runs briefly. Then you pull off one of the wires from the pressure switch. You have to wait about five minutes and the inducer blower will come back on. At that point if you reconnect the wire to the pressure switch, the furnace will run until the thermostat is satisfied. This process has to be repeated every time heat is wanted. does this sound like a bad pressure switch? Thanks! John

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Old 01-03-2007, 10:25 PM   #2
Thoroughbred Mopar Man
Trade: Railroad Conductor/ Ex Hvac Service manager
 
Join Date: Jan 2007
Location: South/East, Ks
Posts: 57
Hi Glock23

The easiest way to figure this out is to look at the board and see what code its giving you. It almost sound like the switch is sticking closed. If you pull the hose off of the inducer, blow lightly and suck lightly on the hose you can sometimes break them loose. But the permanent fix is to replace the switch.

Good luck
Rusty
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