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One air handler on a double 70 amp breaker stopped running

Customer Question
Jason, One air handler on a...
Jason,
One air handler on a double 70 amp breaker stopped running when it called for accessory heat coils to kick on.
The power to the adjacent quick disconnect was off.....BUT...The double 70 was not tripped.
I then reset the double a couple times and all seems to be OK now.
What might be happening?
Submitted: 10 months ago.Category: Electrical
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Answered in 14 minutes by:
1/9/2017
Electrician: Sam I, Electrician replied 10 months ago
Sam I
Sam I, Electrician
Category: Electrical
Satisfied Customers: 392
Experience: Maintenance Electrician, Electrical Contractor, Locomotive Electrician
Verified

Sounds like the 70 amp breaker was in fact tripped but the handle just didn't indicate it. I see that occasionally. As far as why it tripped that is unknown. Perhaps the inrush current was too much for it and it tripped, maybe the breaker is getting old and needs to be replaced, there could be something going wrong with the heater unit or the heater supply circuit. For now, keep an eye on it. If it does it again then you know you have a problem.

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Electrician: Sam I, Electrician replied 10 months ago

If you're satisfied with this answer please rate me. Thanks!

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Sam I
Sam I
Sam I, Electrician
Category: Electrical
Satisfied Customers: 392
392 Satisfied Customers
Experience: Maintenance Electrician, Electrical Contractor, Locomotive Electrician

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