I have a Rheem rgph-07eamgr gas furnace that does not ignite anymore. When I turn it on now the power comes on I can hear the blower and the normal startup sequence. There is this electronic igniting element that in the past would glow red before the burners would light but it does not anymore. What could the problem be?
I agree, it most likely is the "flame ignitor". Check out this video of a normal startup sequence and compare it to your gas furnace... it may help you to cement where the problem lies: http://gasfurnacestartupsequence.blogspo...I agree, it most likely is the "flame ignitor". Check out this video of a normal startup sequence and compare it to your gas furnace... it may help you to cement where the problem lies: http://gasfurnacestartupsequence.blogspot.com/
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? 1:22
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 ...
? 5:53
https://www.youtube.com/watch?v=Bx1pXONg2Oc
Dec 12, 2012 - Uploaded by grayfurnaceman
Troubleshoot the ignitor of the Rheem RGDA model gas furnace.... Jun Sim 5 months ago ... My lennox ...Missing: lx2000
? 0:47
https://www.youtube.com/watch?v=yOSk6qvpWbA
Jan 7, 2010 - Uploaded by Work12Progress
Rheem Criterion II gas furnace model # RGPH-07EAMGR. When a call for heat is made t wo green led's ...Missing: lx2000
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.
5 flashes is a "neutral polarity failure".
on the motor:
White is the neutral and must be plugged in to one of the 3 neutral slots on the control board (usually on the left side of the board)
The other 4 wires (black, red, yellow, brown) are power to the motor and should be connected to the appropriate pins on the control board.
ref: http://www.rheem.com/docs/FetchDocument.aspx?ID=d0613a32-db55-4e32-abfd-04e89e72f7a6
Hi Richard. The switch they are talking about has a small tube coming from the induction blower housing straight to the switch. The best way to test it is to blow and **** on the tube while it is still connected to the switch. You should hear small clicking sounds coming from the switch, if not than it needs to be replaced. Another thing to try is a small wire or paperclip through the small opening where the tube came off. Sometimes this gets clogged and causes the same issue. Other than that, it can be a blocked flue or the inductive blower motor itself is not working properly. Hope this helps and good luck!
Turn off the power to furnace.
on the last burner to light there is a small metal rod in front of the burner. This is a safety called the flame sensor. It is dirty. Unscrew it from the bar ( 1 Screw) unplug the connector wire from it and clean it with steel wool. it will be kind of burnt. Plut back in place and turn on the furnace to cycle.
The way it lights is that the gas is spread from one burner to the next by either a flame tray or small holes drilled in the burner tubes. If the flame does not get all the way across the burner tubes within a few seconds, the unit goes out on failure. Clean and inspect each burner tube, not just the orifice. Clean any tray that connects the burners. You can use a small wire brush or tooth brush but be careful near the glow igniter as it is very fragile.
99% of the time proves to be a short- in the thermostat, furnace, condenser, or the 24V wires between them. Time to get out an ohm meter and check continuity between the wires and between each wire and ground - detective work - can be fun!?
Much less likely: condenser contactor, furnace control board, other condenser controls any of which could be drawing too much current. I bet on a short curcuit but if not I'd try changing the contactor first I think.
If the burners do not fully ignite, the sensor will shut the furnace down. The lack of sufficient burner flame is a gas valve or gas pressure problem within the valve. Replacing the gas valve with the original one may get you going. I surely suggest a professional service company for safety reasons and a thorough inspection. A 20 year old furnace is past it's normal life span.
I agree, it most likely is the "flame ignitor". Check out this video of a normal startup sequence and compare it to your gas furnace... it may help you to cement where the problem lies: http://gasfurnacestartupsequence.blogspo...
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