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Pro Temp 70,000 btu forced air heater works fine until reaches set heat, thermostat shuts off properly. a few minutes later, after a temp drop and thermostat turns heater back on, heater starts and w

This item is only two weeks old. It used to run the second time for about thirty seconds before shutting down and the light would not blink, so, a few minutes aftet that it would run again for antoher thirty seconds, and continue doing this through the night, but now It runs once properly until set temperature is reached, then shuts off, and on restart (about 5 minutes later) will run 18 seconds then shut off, light above thermostat blinks and heater will not reset itself. Power must be shut off and back on.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 579 Answers

SOURCE: Dayton 3E227A Heating Cycle

The sensor for the thermostat is probably going bad or has bad connections. It is (or thinks it is) heating up fast and therefore shuts of the heater.

Posted on Dec 31, 2007

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Therinnaiguy
  • 1420 Answers

SOURCE: BLOWER CONTINUES TO BLOW COLD AIR AFTER REACHING DESIRED TEMP.

There is a little switch on the circuit board. Look closely at the wiring diagram and it will indicate which switch to adjust. If not, review the operating manual for details.

Posted on Nov 25, 2008

mrgrzz
  • 88 Answers

SOURCE: furnace blower not working how it should

first off buy yourself a honeywell stat, in my personal opinion lux stats are garbage, I have run into so many that are bad stats !!! but as far as your fan not shuting down, sounds to me like your fan center on your circuit board is bad and will not shut down the fan when needed, you will have to replace the circuit board, as the fan center is a part of the whole of the circuit board, hope that helps

Posted on Jan 20, 2009

  • 2820 Answers

SOURCE: Gas heater shuts off & won't come back on

sounds like the thermostat replaceing it should help you could try cleaning the old one they can get dust it them

Posted on Feb 28, 2009

  • 68 Answers

SOURCE: Burners shut down at set temp but fan continues lowering temp

the reason he told you not to cycle the power is because some where there is a flashing light that he can decode and tell him where to start looking for the problem. Call him next it happens and don't touch the power or the stat until he gets to see the unit.

Posted on Aug 03, 2009

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