Tempstar 7000 problems

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Old 08-21-07, 07:05 PM
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Tempstar 7000 problems

Hi, I have a Tempstar 7000 installed around 1994 with a Honeywell T87F thermostat. My problem is when I turn the thermostat to the heat setting, nothing happens. After a few minutes the fan will start and either stay on until I turn the furnace's main switch off or just a few minutes. My A/C works fine. Any help would be greatly appreciated and I am will to do any troubleshooting necessary. I am willing to post pictures if need be. Just let me know where to start. Thanks in advance!!!
 
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Old 08-22-07, 04:17 AM
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Look at you gas valve ans see if it is a Honeywell Smart valve. The number on the valve will start with "SV"
 
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Old 08-22-07, 05:20 AM
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No, it's not a smart valve.
 
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Old 08-22-07, 05:30 AM
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I am with Matt on this.. SmartValve are been known to have a lot of problems.
 
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Old 08-22-07, 06:18 AM
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Does it have a standing pilot or, glow rod, or is it electronic ignition. Sounds like you're not firing and the blower is on a timer via the board.

You'll have to be down there while someone activates a call for heating and see what it does and doesn't do in order.
 
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Old 08-22-07, 06:47 AM
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I have electronic ignition. When my wife turns the thermostat up and it calls for heat absolutely nothing happens. Sometimes the fan will start up and run for a few minutes or will stay running indefinately. Other than that, nothing happens, no sparking, no nothing.
 
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Old 08-25-07, 09:15 AM
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Fan?

By "fan" do you mean the fan for circulating air or the small exhaust fan? If you can supply a model number of the furnace, I might be able to find a service manual.
 
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