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Posted by on April 10, 2007, 8:06 pm
>The "fire box" (heat exchanger) for the furnace of package unit model
>number PGB030050-1 made by Goodman Manufacturing may have a tendency
>to crack due to a manufacturing, design, or both defect.
>Since the replacement fire box (heat exchanger) comes with an "air
>baffle" (37012-53S), re-directing the air flow on to the heat
>exchanger, possibly to cool it more to prevent it from over heating
>and cracking so soon; the flaw may be in the design or it may be a way
>to try to get the fragile heat exchanger to last longer. If you have
>a Goodman PGB030050-1 package unit the fire box will need to be
>checked every time the unit is serviced. Furthermore, a repeated
>cracking and replacement of the heat exchanger will cause the
>auxiliary limit switch to eventually over heat and fail as well.
if the truth were to be known, the unit was probably over-fired from
the get-go. lowball unit, lowball contractor, brain-dead installer.
hey lets blame the manufacturer, they'll make a fine scape-goat.
baaaaaaaaaaaaa
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