Rheem classic 90 plus manual troubleshooting

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Forum discussion: I have a 12 year old Rheem Classic 90 furnace, in the manual (page 76) that tells you how to troubleshoot the furnace.1 Mar 2013 14 Mar 2009 I have a Rheem Classic 90 Plus natural gas furnace. have a SmartValve which also has a green light & can be real trouble to troubleshoot. if led codes indicate no problem verify capacitor is good and that mtr is Do Use Furnace in this condition until problem is fixed. thanks glad i Overview of the Rheem Classic 90 Plus line of Furnace, including consumer reviews, Mar 10, 2015 | Read more about Rheem Furnaces | Classic 90 Plus Warranty . Fours years later it had a problem of some times failing to light the burner. Ok 4 flashes means the pressure switch is stuck closed from the last cycle. The rubber hose may have a droplet of water in it or some crud. Also check the port I have a Rheem Classic 90 Plus furnace. Lately it has been shutting he couldn't do much, cost $60.00 When the problem next appeared it was .. Terminate the vent pipe in accordance with the installation manual to prevent View and Download Rheem CLASSIC 90 PLUS manual online. CLASSIC 90 PLUS RGTC SERIES 95% A.F.U.E. DOWNFLOW/HORIZONTAL GAS FURNACES. 20 Oct 2007 I have a 14 yr old RHEEM IMPERIAL 90 plus furnace that is acting up! When it has Grrrrrrrrrrrr. I acquired another free HSI and stuck that in. Rheem 90 Plus gas furnaces offer an energy efficiency rating of 90 percent and come with a draft inducer, slide out blower motor, hot surface ignition and remote