Carrier furnace high Efe

It can handle five tons, or a 60000 btu ac. Tonnage is a measurment for the ac, 1 ton-12000 btus. The ac dose the cooling. the furnace simply blows the air, so if its a good furnace, and sized right, no need to replace it. Simply add the split system to the existing furnace. If you want the tonnage of the ac size, let me know your homes squarefootage, age, condition. Do NOT include the basement in the sq. ft.

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.

power to gas valve ok .. Replace gas valve after checking gas valve coil for continuity/resistance... with valve removed ...and power to valve ... try blowing thru valve from supply side ... stuck valve.... replace...

http://www.corp.carrier.com/www/v/index.jsp?vgnextoid=9d087afdef677010VgnVCM100000cb890b80RCRD
Try searching this Carrier web site. It has lots of manuals.
Hope this helps.

Yes. If the high limit is tripped, the furnace will bring on the fan continuously until the limit resets. Often, they will not reset if tripped repeatedly. If the furnace is too large for your application, you probably are not able to move enough air to keep the heat exchanger cool enough.

easy way to fine the high usage is to turn everything off and watch your meter and have someone start turning thing back on and watch for the most usage of power

The furnace is likely over heating and the high temp. safety is shutting it down. It then cools and starts again. Things to check: Filter, Blower wheel and indoor A/C coil. If any or all are dirty you are limiting air flow and need to clean them.

Most furnaces have a photo cell if it gets dirty the photo cell does not see a flame so it trips the reset button on flame failure.

There is no pilot light, its electronic start now.
like your stove should be.
you can trigger the furnace by shorting out the correct combo on the thermostat but not advised unless you know the right ones.
be sure the power is on the the transformer that provides power to the thermostat.
though that may be contained within the furnace now days.
just check your fuse box and call a tech.