Carrier MCA58 Clear Switch Lockout
Carrier furnace Model #58MCA100-16 was off (new house for me). In starting it up for the first time, I turned on theexternal gas valve but failed to turn on the internal gas valve. The furnacestarted up right away but after a few minutes it stopped running. LED code33 appeared (Limit or Flame Roll-Out Switch is Open). This has since changed to Code 13 (Limit or Flame Roll-Out Switch Lockout). I have been unable to clear this lockout.
Wondering if is the flame roll-out? the Limit switch? I can't seem to find the limit switch.