Unit starts and lights properly, but burner flame is very, very low; much lower than it used to be. After 3 hours small room is still below freezing. Another furnace on the same gas line burns properly, so it's not the gas supply.
I suspect the termopile is bad, but the testing directions in manual aren't very clear. How to test thermopile? Or other possible causes?
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Re: Empire DV35 not hot enough
Sounds like heater needs to be cleaned . I would recamend that you call a heating and cooling company to come out and take heater apart and clean. You can take front panel off and make sure you are getting go airflow through bottom of heater. If you feel comfortable with cleaning the heater yourself you can buy a burner brush at your local hardware store. If you decide to do this let me know and i can try an and help you with what you need to do. If you have the manual it will also tell you what to do to clean.
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Do you have an electrical meter that measures millivolts?This sounds like a millivolt system. The pilot orfice and pilot burner need to be clean so they are producing a hot flame, hitting the pilot generator to create enough millivoltage to open the main valve coil. If you know how to jumper the thermostat circuit try it, Millivolt systems will give you problems if there are loose connections or to much resistance through a switch. Again, there could be some type of safety switch that is wired into the thermostat circuit to prevent the heater from coming on if it isn't safe. Call a pro if its not obvious
Hi! First of all does this unit uses a hot surface ignitor or a spark ignitor? A hot surface ignitor is a resistive element that will get hot enough(glows yellow to near white) that ignites the main burners directly and a spark ignitor will light a pilot light first then that pilot light will ignite the main burners. If your system uses the hot surface ignitor then there will be a flame sensor on the last burner that lights. This is a thin silver metal probe that is actually in the burner flame when that burner is lit. It is held in place normally by a 1/4 inch screw. It will have 1 wire attached to the end by a female spade connector. You can pull this wire off before you remove the flame sensor to clean it. Use a fine emery cloth to lightly sand off any residue on it. Also you will need to clean the end of that burner that the flame sensor serves as this is normally the grounding field. This is most likely the problem with your system if it is a hot surface ignition type. If your system is the spark type then the problem is similar. Normally the pilot light is toughing a small flame sensing probe that is next to the pilot light. This probe also has to be clean. One more thing to look at is to see if the pilot light is large enough to surround the flame sensor. If the pilot is weak it will not touch the flame sensor enough and the system will do what it is doing for you now. If the pilot is weak then the pilot orfice is restricted. This should only be looked at and repaired by a qualified service technician. I hope I pointed you in the right direction!! Good luck!!
Obviously make sure the gas supply valve is open and gas is going to the unit.
Then determine if the burner is lighting at all... there is a small plastic plug in the lower left of the front panel. If you remove this plug you can see the burner assembly.
When the drier powers up you should see a glow plug that gets red hot, then a click (the solenoid opening) then the burner should light and you should see a blue flame.
If this does not happen, the glow plug will go out and then in a minute or so, the process will start again with the glow plug and the click.
If this cycle repeats without ANY lighting of the burner, you need to replace the burner assembly and/or safety valve... send the model number and I'll show you the parts.
If the burner lights for a few seconds and then extinguishes, it is probably a faulty flame sensor, which is a probe extending into the path of the burner flame about in the middle of the burner assembly (It makes sure the flame is lit and if it doesn't get hot enough it closes the gas valve to avoid filling your laundry area with gas). You can try cleaning it, and then replacing it. Again if you give me the model # I can help you...
Empire faw 40 makes a loud bang when starting up. There are three burners. The pilot light is on one burner. When the furnace starts, gas is lit on that burner and the flame is passed on to the other burners by a small channel that can get stopped up. You just have to remove the burners and clean the channel with a small file, like on a finger nail clipper. This can be difficult due to the pilot assemble being attached with two bolts. The bolt on the right has to be removed with a short screw driver. You can not get a socket on it. After you remove it there is enough play to remove the bracket and gas burners.