Have HVAC Questions? Ask an HVAC Expert for Answers
Most heating and air conditioning questions require some diagnosing of the specific situation.Very few are one line asnwers .To be professional and provide you with an accurate answer may require me gathering some details such as model number on units and specifics on the issue at hand.To tell you to replace a part or exactly what is wrong with your unit without knowing this information would not be doing you justice ,would be less than professional on my end and a guess at most.Please provide information I ask for so that I can provide accurate answers to your specific equipment and situation.
1.Do you have a volt meter to see if we are getting 24v to gas valve ?
2.do you get a different error when it fails to light
3.Please provide model on furnace
Ok this sounds like it is going to be a board issue. The board should signal 24 volts to gas valve as soon as igniter lights up. Also if furnace fails to light, we should get a different error code.
It is. If you can see a place like this