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Posted by Mongo on February 21st, 2003 07:41 AM
In reply to FURNANCE NOT WORKING by D SMITH on February 21st, 2003 12:44 AM [Go to top of thread]

"Roll out", or flame rollout, is caused by inadequate induction or draft flow. When the furnace lights off, the flames stay near the burner, and sometimes “roll out” into the lower compartment. This is not good, and can be quite dangerous. In some cases, the induction or draft is so low that the gas will not ignite, or if it does, the flame will be partially or completely yellow in color and may produce soot due to poor combustion cause by the lack of oxygen.

A low WC value can be caused by a plugged induction sensor port, a bad induction blower, a restriction or blockage in the flue pipe, or a leak in the heat exchanger.

The worst case is a cracked heat exchanger. Dangerous.

Your furnace keeps kicking off due to its own protection circuitry. Trying to override this to get it running can be dangerous to you and your family.

If you really want to troubleshoot, I'd venture that you could examine the exhaust duct/chimney to ensure hat it's not clogged. Squirrel nests, etc. Other than that, call a qualified HVAC person to come in and check out your system.

CO is deadly.

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