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Oct 31, 2012 ... This is a list of the common problems with the Janitrol GMP 050, 075, 100, and 125 -3 gas furnace. this vid will be combined with some others ...


These furnaces were installed from the late 80s to present. .... The video below begins the troubleshoot of the Goodman 80% furnace with an overview of ...


Nov 15, 2010 ... Many Goodman domestic furnaces installed from the 1980s to the present time are the 80 percent efficient Janitrol Type GMP Models.


I have a 10 year old Goodman GMT -090 4a furnace that will operate ... He finally found a bad limit switch that was causing his problem.


Overview of the GOODMAN GMT line of Furnace, including consumer ... And I've always had reliable trouble-free service from Goodman Furnaces & ac units.


Gas furnace vertical, 3 gas burners 70k btu, with glow bar ignition first burner, ... Hope this helps someone in the future with the same problem.


Apr 28, 2012 ... Ok, have a Goodman GMNT080-4b Furnace/Air handler. We bought the house last summer, and AC was fine for the rest of the summer, Heat ...


Nov 19, 2013 ... I cleaned the flame sensor and solved the problem. ... bypass pressure switch and see if it doesn't fix the problem. make sure you are not ...


Oct 26, 2015 ... A furnace pressure switch is there to tell the furnaces control board that the ... If there is no change then there is a problem with the switch. .... I replaced the control board on my goodman GMT 090-4 the furnace worked for ...