I have just bought a house which has three 58STA/STX furnaces. They are brand new. Two of them are working, but one of them refuses to light. The red neon light is on continuosly. The unit blows cold air.
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Is it possible the drain is plugged? The newer furnaces have a moisture drain and will shut down if they are blocked., shutting them down and restarting will reset fault, but will come right back if not fixed.
A 13 code means the furnace cycled on limit more than three times consecutively and is in a lockout for 3 hours. A 14 is ignition lockout. An ignitor does not intermittently quit working. I'm the service mgr at our shop, and I know that particular furnace model has a service bulletin out on bad secondary heat exchangers. If your lucky the filter is dirty, or the furnace condensate trap or drain is clogged. Most likely the secondary heat exchanger is plugged up and isn't allowing the pressure switch to make. Or the furnace is overheating due to it not being able to properly vent hot gas. Which would explain the high limit lockouts. Call an authorized carrier dealer so you can take advantage of the free heat exchangers and the $300 labor credit. You can also call an authorized Bryant dealer to perform the work for you. Only an authorized dealer can rectify this problem because the Bryant corp requires testing and paperwork in order to get your free parts and labor credit. Good luck.
Code 33 is "limit is open or flame switch is open"
FIRST make sure the filter is clean. Turn off unit then turn back on.
if it works but then later gives you a 33 code then you might have a dirty a/c coil (if you have a/c) that will cause the limit to open. 1st try that
heres the manual for the unit, look at pages 46-47 and theres a trouble shooting ladder schematic that asks what the systums are then gives the solutions for the fix. if you are still having problems you can request to talk to me and I'll be more than happy to help.