Does this unit have one trans ,,or as I've seen in a lot of aaons two transformers paralleled
?
You sure someone didn't pull two and went back with one ?
Or do you have two ? be absolutely sure of your secondary VA requirements.
You said 14 volts at trans.
Doesn't make sense? i assume you had 24 @ secondary and made a typo.
Is something being energized later causing a big voltage drop?or a faulty component causing one?
Sounds like a voltage drop or undersized transformer .although an undersized trans would probably blow the fuse or burn out before a coil did.
Pull all components "in" and measure your secondary trans amp draw .
If a 75va trans at 24volt that equals an allowable 3.125 max amps to be pulled . VA divided by secondary voltage equals allowed max amps... although I would allow some wiggle room.
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I suspect a voltage drop thru components ,probably one feeding that particular contactor or undersized trans. If it's all rough how much would the factory limits,contactors,tdr etc cost vs repeat calls.
I also suspect that you might be "leaving " some voltage on that coil when it's not energized . Maybe pulling current thru it but not enough to pull it in.
Also is your primary tapped correctly? is it a multitap trans ,if so check that as well ,although usually if tapped wrong your secondary should be off as well
240 volt supply = trans tapped for 240 not 208 or vise versa,,,,