I have a Coleman model # FC32A3XN1A. The code is flashing 10 = Gas flow with no call for heat. There is also water in the bottom of the furnace below the circuit board. I also hear what sounds like water constantly running through the pipe leading from the furnace to our unit outdoors.

Coleman flash codes. It may be 10 flashes twice.

https://www.google.com/search?q=Coleman+furnace+29+red+flashes

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you can do a sort of reset by completely disconnecting power to it as the breaker box. There is some generic help here, but in most cases a furnace faults needs a professional fix.

My Vexar furnace model # DGAA077BDTB is not working and ...

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May 25, 2016 - My Vexar furnace model # DGAA077BDTB is not working and is flashing a code "3 flashes and a pause then 3 flashes - Answered by a verified ... 1 answer

Coleman Furnace Error Codes ' FurnacePrices.ca

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Check the twinning wiring. Rapid amber flashing. What this means, There's a low flame sense current. How to fix it, Check and clean the flame ...

Tempstar Furnace Error Codes ' FurnacePrices.ca

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What this means, The control is locked out and will auto-reset after 1 hour. How to fix it, Reset power to clear the lockout. Two LED flashes. What this means ... How to fix it, RED, YELLOW, or ORANGE wire at the gas valve. Status codes 4 + 1.

Make sure your air filter is clean. Is the thermostat satisfied? or is the room temp. still below the thermostat setting? When ever you have to turn the power off and then back on to a furnace that usually indicates that the furnaces ignition control locked out. The first thing that I would try is cleaning the flame rod.

Have to know the model and serial of the furnace.
locate code list usually inside or on the back of a door.
Operation sequence= call for heat--inducer blower motor--makes pressure switch--signals board to bring on hsi--after a set time gas valve opens and you have ignition--main blower motor comes on after a set time

jump out pressure switch see if it lights check hose to pressure switch see if they are split or connections are not good ,cut off ends and put back on presure switch.

i hope the heater doesnt come on when a limit switch is open,you really have problems. so a limit is telling you that your furnace it over heating. first check filter and heat vents and returns they must be clean and open. closing heat vent or blocked returns will cause over heating. after chacking this look at firing rate. furnace could be overfired. you would need a "u" gauge to check manifold pressure. your name plate will tell you what this should be. find the tap on the burner manifold or outlet of gas valve. fire furnace and see what it is. 3.5"wc for nat and 10" wc for propane maybe.

This sounds like you have an intermittent main board problem. It may be turning on you furnace when the thermostat is not calling for heat. It also could be a short in your low voltage(thermostat wire) going to your furnace. Either way you need to have it checked. It's under a year it should still be under warranty.

Check your gas flow...clean the sensor...and be sure your gas switch is in the right pposition

you probably have a cracked heat exchanger which is causing the rollout switches to trip.even the tiniest of cracks will cause the fan to blow the flame back into the unit and cause them to trip. check the heat exchanger for even the tiniest of cracks if so replace it. and be sure to have a carbon monoxide alarm in your home.