Question about Heating & Cooling
I have a lennox whisper heat and the pilot light sometimes wont extinguish after it runs ... when that happens, it wont restart and I have to turn off the power switch, bang on the control box a couple times (pilot goes out) and turn the switch back on... it calls for heat, sparks and the furnace ignites and runs fine till the next time the pilot wont extinguish. Is it my box, thermostat, pilot light or what?
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Posted on Jan 02, 2017
Ok, you either have a inducer fan issue or a pressure switch issue or a plugged vent pipe. The inducer turns on to establish a draft for the exhaust. If it is not working you will get this error code. If the pressure switch does not sense pressure caused by the inducer, it will give this code. If either the intake pipe or exhaust pipe is blocked (even y just a little) it will give you the same error code. If the condensate hose or receptical is plugged, again it will give you this error code. Good Luck!
Posted on Oct 21, 2008
furnace was working fine until the electricity went out for 5 hours now furnace is just humming and then nothing...HELP...
Posted on Dec 29, 2008
sounds like the circuit running to your condenser powers your furnace. when u disconnect power to the furnace it will reset and run the blower on startup. check the tube connecting the vacuum switch to the induced draft motor. maybe a leak. good luck
Posted on Nov 24, 2009
Hi check out the flame senser is clean also jump ou tthe pressure switch see if it lights when you do this , igntion modul is just a box with some push on wires just get the right one the info is all on the module
Posted on Feb 16, 2010
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