View single post by hvacdrd
 Posted: Sun Dec 3rd, 2006 05:49 pm
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Joined: Wed Aug 16th, 2006
Location: Michigan USA
Posts: 1186
See if you can make sense of this. Not sure why it came out so fuzzy when I attatched it. Do a quick electrical test at the pressure switch before we go further. Test from C to NO - reading should be zero v-ac. If it is 24v-ac then this confirms we have a switch problem and we will proceed. For your model the switch contacts open/close at -1.20" w.c. (translation - "w.c. = inches of water column (28"w.c. = 1 psi).

Attachment: presstest.JPG (Downloaded 72 times)

Last edited on Mon Dec 4th, 2006 04:47 am by hvacdrd

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