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ApplianceGuru.com: The Samurai Appliance Repair Forums > Do-It-Yourself Appliance Repair Help > Heating, Ventilation, and Air Conditioning (HVAC) > Rheem RGPH-07EAUER... igntor won't glow |
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| Moderated by: RegUS_PatOff, hvacdrd, applianceman18007260692 |
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| Rheem RGPH-07EAUER... igntor won't glow | Rate Topic |
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| Posted: Wed Nov 19th, 2008 02:01 pm |
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1st Post |
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jbarch Senior Apprentice Appliantologist
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I have a gas furnace, Rheeem model RGPH-07EAUER. I replaced the HSI (ignitor) almost a year ago, but now it is acting up again. The HSI doesn't glow, and consequently we get no ignition/no heat. Trying to measure the voltage, but I'm unsure about where to measure it. First thought was to unplug the HSI connection, and measure there on the incoming wires (see photo). Doing this I get zero voltage when I call for heat. Or should I reconnect and just place the probes directly on the gritty HSI surface? FWIW, here's the sequence of what happens when I call for heat: 1. Furnace does the usual 30 sec. warm up. 2. Gas valve opens up but HSI is not glowing, so no ignition. 3. Blower fan comes on as normal, but of course blows only cool air. Seems odd that this step happens without ignition. 4. Faint smell of gas after I shut it off, because of course it never got a chance to combust. Thanks in advance for any help, JB Attachment: voltage_lowres.jpg (Downloaded 72 times)
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| Posted: Wed Nov 19th, 2008 02:03 pm |
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2nd Post |
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jbarch Senior Apprentice Appliantologist
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FYI, here's a photo of the HSI. Attachment: HSI_pic.jpg (Downloaded 72 times)
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| Posted: Wed Nov 19th, 2008 02:08 pm |
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3rd Post |
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RegUS_PatOff Fellow, Academy of Sublime Masters of Appliantology 
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I'm not an HVAC expert, but there should be voltage there... or when connected, if your probes (or smaller wires) will fit into the back side of the plug. You could also measure the OHMS of the Glow Ignitor. (good or OPEN reading) Last edited on Wed Nov 19th, 2008 02:09 pm by RegUS_PatOff ____________________ RegUS_PatOff http://www.youtube.com/watch?v=oPAY2LsKVEw my video production: “Easter Seals Walk With Me” (also in HQ) http://www.youtube.com/watch?v=-EBiLyYXMiA Upon leaving this Earth "Do you want the Smoking or Non-Smoking section ?" |
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| Posted: Wed Nov 19th, 2008 02:23 pm |
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4th Post |
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jbarch Senior Apprentice Appliantologist
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I just tried to fire it up again with the HSI connected. Using my little "circuit alert" tester (not the multimeter) I get an indication that there's voltage coming in from the furnace. But there's no voltage in the two white wires for the HSI, seen in the second photo above.
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| Posted: Sat Nov 29th, 2008 09:54 pm |
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5th Post |
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applianceman18007260692 Sublime Master of Appliantology 
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That ignitor is bad, can't you see the white spot?
____________________ "May the hinges of our friendship never grow rusty" Old Irish Saying |
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| Posted: Sat Nov 29th, 2008 10:03 pm |
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6th Post |
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jbarch Senior Apprentice Appliantologist
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Naw, the ignitor is fine... I should've posted earier to say that I had to replace the circuit board. cheers
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| Posted: Sat Nov 29th, 2008 10:47 pm |
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7th Post |
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applianceman18007260692 Sublime Master of Appliantology
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Otay 
____________________ "May the hinges of our friendship never grow rusty" Old Irish Saying |
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| Posted: Sun Nov 30th, 2008 03:25 pm |
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8th Post |
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ROBBYRIG Sublime Master of Appliantology 
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applianceman18007260692 wrote: That ignitor is bad, can't you see the white spot? I'm with the applianceman here, if that ignitor is working, it does not look like it will work for very long. I'd replace it.
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| Posted: Wed Dec 17th, 2008 07:37 am |
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9th Post |
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RegUS_PatOff Fellow, Academy of Sublime Masters of Appliantology
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My brother now has the same problem, same Furnace... intermittent Glow... anyone have a Parts List & Service Manual for the RPGH-07EAUER ? Last edited on Wed Dec 17th, 2008 07:37 am by RegUS_PatOff ____________________ RegUS_PatOff http://www.youtube.com/watch?v=oPAY2LsKVEw my video production: “Easter Seals Walk With Me” (also in HQ) http://www.youtube.com/watch?v=-EBiLyYXMiA Upon leaving this Earth "Do you want the Smoking or Non-Smoking section ?" |
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| Posted: Thu Dec 18th, 2008 09:49 pm |
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10th Post |
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dkpd1581 Sublime Master of Appliantology 
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I cant speak for Rheem; however, Trane hot surface ignitors have to register between 55 and 75 ohms or else you will experience intermittent problems. Measure your ohms and calculate your current based on the voltage applied (E=IR) and if you get less than 1 amp, you may have to replace it. The carbide material experiences a resistance INCREASE in the material with age and the higher resistance causes less current and thus intermittent failures to ignite. Another potential issue is with fissure cracks. An otherwise good ignitor exhibiting continuity through it in a cold state will expand and cause the fissure crack to open and break the circuit - that problem will drive you nuts. Hope that helps.
____________________ Take a minute to visit me at: https://sites.google.com/site/dkpd1581/ |
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| Posted: Sun Jan 11th, 2009 02:51 pm |
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11th Post |
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ebusinessbuilder Senior Apprentice Appliantologist 
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Great suggestions ... BTW: My Rheem RGPH 12EARJR was installed in Feb 1998 and I have the owner's manual which on page 42 states Check for 60-90VAC at Igniter, terminals and at (IFC) terminals -> IF YES, REPLACE IGNITER
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| Posted: Sun Jan 18th, 2009 03:04 am |
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12th Post |
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telefunkenu47 Sublime Master of Appliantology
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Did you replace that worn out ignitor yet? you know, the one with the white spot.
____________________ Even root canal is easy...if you're a dentist... |
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