Lennox Low Pressure Switch Failed Open. I have a lennox AC/heat pump that will not run. Inspect vent and combustion air in- ducer for correct operation and restriction I'm seeing the diagnostic code " E223 - low pressure switch failed open"
Lennox 23W26 Low Pressure Switch from www.technicalhotandcoldparts.com
I tried the a/c and got a different fault, called OU low pressure switch lockout I'm assuming this means I need a new pressure switch, does that sound about right? If so, I'm trying to find a local Lennox dealer near me who has this part in stock.
Lennox 23W26 Low Pressure Switch
The tech I had out last year just hooked the high side hose to the low side of the pressure switch to get it to work but I believe this only allowed the furnace to run on stage 1 all year as then the pressure never was high enough to go to to stage 2. I'm assuming this means I need a new pressure switch, does that sound about right? If so, I'm trying to find a local Lennox dealer near me who has this part in stock. I tried the a/c and got a different fault, called OU low pressure switch lockout
Heating furnace not turning on pressure switch stuck open / closed. Your checklist led to finding moisture in a pressure switch. Check pressure (inches w.c.) of low pressure switch
Lennox Furnace Pressure Switch Issues (Explained in comments) r. This code refers to Low-pressure switch failed open − Refer to troubleshooting in installation instruction Inspect vent and combustion air inducer for correct operation and restriction