Ducane 92+ cutout on blower start - http://www.hvacmechanic.com/ Forums
Original message
| danjr
 |  "Ducane 92+ cutout on blower start"
, posted Thu 17 Nov 12:31  
I have just installed an new Ducane 92+ gas furnace. It starts on call for heat and the burner lights properly, Within a second or two of blower fan start, the gas valve closes and the burner goes out. The fan runs until the heat exchanger cools and it stops. The sequence than repeats itself. The pressure switch works properly while the flame is lit. When the blower starts and the gas valve drops out there is no voltage through the pressure and limit switches. Anyone out there with a idea of what's wrong?
Adirondacker
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Replies:
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| danjr
| "Ducane 92+ cutout on blower start" , posted Sat 19 Nov 09:05
I found that the problem was the old Honeywell thermostat. I replaced it with a digital set back one and it now works normally. Thanks for the input.
Adirondacker
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| fitter597
| "Re(1):Ducane 92+ cutout on blower start" , posted Thu 17 Nov 18:33
Check to make sure your 110v is wired right to the furnace, make sure you don't have the hot and common switched. Also you may have a venting issue, disconnect the vent pipe and see if the unit runs normally. And is this a brand new install first time firing it?
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