Hardy H4 issues

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Wayned24

ArboristSite Member
Joined
Dec 18, 2017
Messages
55
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Location
New Marshfield, Ohio
Hello everyone. I’ve had my Hardy H4 for almost 4 years now, so I feel like I have a pretty decent idea of how it runs, but this morning I woke up with cold air blowing out my vents.
Usually this means the fire went out overnight or my taco pump wire came loose (mine does that sometimes) so I went out and everything is working properly. Water is hot in the tank, taco pump is pumping hot water to my house, etc.
Any other ideas as to what might be happening? I’m ALMOST done heating for the year.. we got a blast of cold last night after having several 70 degree days in a row, but I have kept the burner fed each day since mid September without fail..

Any help would be greatly appreciated. Thanks in advance.
 

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