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-   -   Carrier 58MXB Code 13 / venting (http://www.diychatroom.com/f17/carrier-58mxb-code-13-venting-170977/)

Patkhixson 02-04-2013 10:17 AM

Carrier 58MXB Code 13 / venting
 
Furnace is 6 years old, have had chronic problems with fresh air feed on outside of house developing snow/frost/ice blockage, shutting down furnace until cleaned out. Have also had one occasion where 30 amp fuse popped. Have always gotten furnace to restart following corrective action. HOWEVER, this time I let my temper get the best of me, and I cut the fresh air pipe just ahead of the 90 degree elbow going into basement wall.

2 questions: 1) Is there a mandatory length and number of elbows the fresh air intake must be? With the reduction in pressure that should occur by removing length and elbows, do I cause another problem with pressure measurement? If not, I can put a screen over the newly created end to keep the critters out. (BTW, the approx. 18" of pvc I cut off was nearly frozen solid with thick frost.)
- and - 2) Is "manual reset" a matter of shutting off all power to furnace and then repowering? Is there a minimum period the system must be shut down for reset to occur? Blogs say system should reset itself in three hours, and I'm 1.5 hours into that waiting period now. Thanks for any input.

2 hours into system auto reset period. Should have mentioned that the furnace is in "heat" setting, with fan in "auto". Fan continues to run nonstop. Expect it to shut down and restart itself within the 3 hour period described elsewhere

Patrick Eubanks 02-04-2013 01:00 PM

hmmmm.
 
If cutting the power off and back on doesnt reset the system , you may want to take a look at your limit switch. Fan continuing to run sounds like a bad limit.

Patkhixson 02-04-2013 02:29 PM

Rebuild cold air intake, shut down everything, and then restarted power on. LED produced a 33, followed by 13, pointing at the limit switch as you suggested. ??? The limit switch is where? Schematic shows that l.s. and a companion switch are connected by red wire. A 1"x2" inch module has two terminals with red wire to each, and is mounted on the air wall just above the heat exchange module. It's secured by two sheet metal screws. Is the module a two-fer that comes as a kit?

Patkhixson 02-04-2013 07:23 PM

Quote:

Originally Posted by Patrick Eubanks (Post 1109361)
If cutting the power off and back on doesnt reset the system , you may want to take a look at your limit switch. Fan continuing to run sounds like a bad limit.

Found a limit switch not far from home, right price, but IT FIXED THE PROBLEM!!!! Thank You very much for putting me on the right track to solving the problem.

Patrick Eubanks 02-04-2013 08:36 PM

awesome
 
Thats Great!


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