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I tried everything one can do without being a licensed repair man. I checked the circuit breaker, made sure the temp and thermostat were set properly and went to the little gray box by the unit and pulled out the breaker plug and plugged it back in to reset. Nothing worked. Until I considered that my 4 year old had been playing by the unit. I walked back out to the unit to see if it were possible she could have done something. Lo and behold a little red handled valve to turn the gas on and off that could very easily be turned. I called the repair man and asked how to tell if the gas valve were on. Sure enough it was turned off. The handle needs to be in line with the pipe. Now the house is warm again, but not as warm as her butt when I got done with her:-)

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Q: What makes a gas furnace only blow cold air?
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