Hi Customer. Thank you for asking your question on Just Answer. The other Experts and I are working on your answer. By the way, it would help us to know:-Could you explain your situation a little more?
What is the make and model of the fireplace?
What have you tried to correct the problem?Thank you again for trusting us with your problem. Please reply as soon as possible so that we can finish answering your question.
Hi & thanks for replying. Our gas fireplace is made by Archgard and I don't know the model number. I had replaced the blower motor because it had been making some noises and when I had taken the fireplace insert apart I confirmed it was the motor as the armature was toast. So I had since replaced the motor assembly and cleaned the fireplace at the same time and was carefull not to touch anything I did not have to. Of course I have disconnected the gas before anything. After completing everything I turned the gas back on and started the pilot light and held the switch for 30 seconds and then turned it to the on position and now the main burner will not ignite.
I have checked all of the connections from the thermostat and the thermopile. There is continuity when the thermostat is turned on. I have tested the two wires coming from the thermopile and on my multi-meter it is only reading like 48 to 60 millvolts. I am sure that I have it on the millivolt scale. The fireplace worked fine before and the only thing I have done was change the blower motor. So I am really stumped? Did the thermopile just go on its own for no reason?
I am unsure which model you have. What is done to turn the burner on? The pilot light is staying lit? Do you hear any noise when the burner is trying to light? Do you have any idea how old the unit is?
From what you have told me I would suspect that the thermostat wiring is the problem. Perhaps it was loosened? The information you will need is on page 14 of the manual for your fireplace. If you need to view or download the manual click here. By jumping the thermostat you can verify if the gas valve is the part having the problem. If the gas line was disconnected it is possible that something has been lodged in the gas valve.
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Did you disconnect the gas line when you replaced the motor?
Have you checked voltages to the gas valve?
The gas valve has a very small orifice that supplies the gas to the burner. If something blocks this orifice it will not allow the gas to flow. The valve itself could be defective and if that is the case, replacement of the valve is the only option. Some valves are supplied power with a transformer. If this is the case check to make sure that the transformer is suppling the proper voltage. If you have a digital camera and can upload a picture of the gas valve, it may help me provide additional information. From what you have told me the thermocouple,e is not the problem. If it were the pilot light would not remain lit.
The image file size is too large too upload.
I believe you are going to find that the thermopile is the problem if you are positive the gas valve's orifice has nothing blocking it. The best way I can describe the need for 2 is the thermopile is what allows the gas valve to supply gas to the burner, just like the thermocouple lets the pilot work. I do not believe you are going to find the thermopile at your local hardware store. Likely you will need to go to a HVAC supply house. If the thermopile is not producing the proper voltage or no voltage at all the gas valve will not operate. The voltage produced by the thermopile is in the 325 millivolts range after the pilot has been lit for at least 3 minutes.
I appreciate the help. I work for a industrial supply company and we have thermopiles in stock. I just did not want take everything apart for nothing. I managed to reduce the file size of the image. Let me know if you have any comments.
The picture looks good. Make sure the thermopile is clean since a buildup could keep it from working correctly.
I will accept when I try the suggestions you gave me. I have tried them as of yet as I work long hours so I will let you know when I try it.
Thanks for your reply.