Carrier 9200 Code 31, Inducer Won't Run usu. - http://www.hvacmechanic.com/ Forums
Original message
| xwing1
 |  "Carrier 9200 Code 31, Inducer Won't Run usu."
, posted Thu 30 Oct 23:26  
Problem: Inducer Motor Won't Start, Code 31
Carrier Weathermaker 9200 gas furnace that won't run.
It gives Code 31.
Turn off power, turn back on and here is what happens:
1) Normal 90second blower motor runs, normal Code 12 during this.
2) Inducer Motor sometimes rotates like 2 turns like it got a split second of power, then it doesn't come on; sometimes it doesn't rotate at ALL.
3) Code 31 flashes.
I have checked vent piping; cleaned out and flushed water condensate trap and lines.
Sometimes it will work, sometimes it won't. Since it throws the 31 code even if the inducer hasn't run at ALL I know it isn't TRULY a blocked vent or the condensate trap...without inducer running it couldn't even properly TEST those pressures to give a code 31 fault.
Sometimes during the day, I can hear the inducer motor on, shut off a second, back on, illogical like relay or board giving stupid instructions...but randomly it works to make heat sometimes.
I suspect a bad relay and/or computer board...that simply isn't telling the inducer motor to run/at the right times.
ANY HELP!?!? It's getting COLD in Wisconsin now!!
Can I buy the computer board and install it myself? From where? I am handy with tools, soldering etc.
THANK YOU in advance!
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Replies:
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| oldmangobles
| "Re(1):Carrier 9200 Code 31, Inducer Won't Run" , posted Fri 31 Oct 19:07
is there any way tou can find out if the voltage drops off to the inducer motor?if the motor has spade hookups you could you could plug a lamp into the wires coming from the board to see if the power goes on only briefly or the motor will not go on with power.I believe this motor has a capacitor,if there is steady power your capacitor may be bad.
old man mike
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| oldmangobles
| "Re(1):Carrier 9200 Code 31, Inducer Won't Run" , posted Fri 31 Oct 19:07
is there any way tou can find out if the voltage drops off to the inducer motor?if the motor has spade hookups you could you could plug a lamp into the wires coming from the board to see if the power goes on only briefly or the motor will not go on with power.I believe this motor has a capacitor,if there is steady power your capacitor may be bad.
old man mike
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