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I have a rheem gas furnace set on lpg. it will come on run 5 mins. cut off ( false start)and come on again and run fine. It does this everytime. The unit is 10 yrs old. What can I do to correct the situation?
thanks
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https://www.youtube.com/watch?v=fBJ3r9MUa-U
Nov 29, 2011 - Uploaded by RochNoure
A Furnace Flame Sensor is a safety device that reads the temperature and ... easy fix, but the furnace is ...
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https://www.youtube.com/watch?v=Bx1pXONg2Oc
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Troubleshoot the ignitor of the Rheem RGDA model gas furnace.... Jun Sim 5 months ago ... My lennox ...Missing: lx2000
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https://www.youtube.com/watch?v=yOSk6qvpWbA
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Oct 19, 2004 - 25 posts - 9 authors
After a certain amount of time of not running, the heater will refuse to kick back on. ... 2 flashes, then a 2 second pause = pressure switch is open. What do .... On LP gas furnaces, the spark starts and the gas valve opens. ... Buffing them up with a little steel wool (5 minute job) is a good annual PM thing to do.
Not sure but its possible your thermo coupler is shot and needs replacing. If you have a pilot light it could be out but the furnace should not start if the pilot is out as there should be no oower getting to the controls unless the pilot is trying to let it start. A bad thermocoupler will not let the flame start.
1) Rheem does not post service manuals. Call Rheem and ask why, since the other big manufacturers, AO Smith and Bradford White do post service manuals.
3) Rheem does not recommend changing gas type, especially from natural gas to LPG. LPG is higher pressure, and burns much hotter and requires cast iron burner, unlike the lighter-weight metal used for Natural gas burner. The manifold tube and thermocouple must match the gas control valve, and gas-type and have correct thread for propane. The combustion chamber and heat transfer surface can also be heavier metal for propane heaters.
could be number of problems but often this is caused by valve on the inlet manifold which is electricaly operated and then it allows the gas in but it is also vacumn sensitive so a perished rubber pipe could cause it not to sense the vacumn .best advice without seeing it is to visit a mechanic that is conversant with LPG conversion
If your Rheem furnace is less than 10 years old, it may store an error code to help you figure out if it is the furnace or the thermostat. Look at the circuit board for a blinking light. If you have to remove the panel that opens up the door safety switch, it will erase the code. Look for a small viewing port. Next time the furnace fails, prior to doing all the things you did last time, look thru the viewing port to count the number of blinks. Once you get the number, open the cabinet and on the wiring diagram glued to the back of one of the panels'\; there will also be an error code chart. It may give you a starting point where to look. If you have no error code, chances are that your thermostat is freaking out or has a bad connection. Hope this helps.
I have this same POS model. It is not the thermostat. this model is just garbage and cant wait to get something that works right. i have been fighting this thing for 4+ years now.
Thanks for the info. Unit has brand new filter. Any other suggestions.
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