Pressure switch did not open. The chart says to check for obstructed pressure tubing or a pressure switch stuck closed.
Homeowner part this code names: furnace pressure switch hose.
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Bryant 23 means the pressure switch did not open. The chart lists obstructed pressure tubing and a pressure switch stuck closed. It is not code 24, the open 24 V fuse, which is 2 short and 4 long. Nothing on 23 asks you to pull a thermostat wire or change a fuse. Code 32 is the low-heat switch that did not close.
Likely causes
- Obstructed pressure tubing
- Pressure switch stuck closed
Safe checks for 23
- Count 2 short flashes and 3 long flashes. Do not jumper the pressure switch
- Techniciancheck the pressure tubing for an obstruction, then the switch if it is stuck closed
Capacitors can hold a charge after the power is off. Safety terms.
When to call a pro
Call a licensed HVAC technician. A switch that stays closed is a safety-circuit fault, not a filter job.
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Parts & tools for this fix
Taken from this code's causes or steps. A search link opens Amazon results and does not confirm a fit. Check the model number in the manual.
Furnace pressure switch hose: guide
In this code: Obstructed pressure tubing
See the guide for what to look for when buying one.
Furnace pressure switch: guide
In this code: Pressure switch stuck closed
This one is for a technician to test or replace, so we only explain it and do not link to buy it.