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Question

I have a Janitrol model PHO - 36 and this year after the air conditioner runs for 20 to 30 minutes it blows the breaker. we have a 60amp breaker in the panel and the unit is 70 amps. Why is it blowing?

Submitted: 251 days and 10 hours ago.
Category: HVAC
Value: $15
Status: AWAITING CUSTOMER ACTION

Answer

hey this is scott, is it the outside unit breaker that is tripping, pho-36 sounds like a three ton unit and for a three ton unit a 60 amp breaker is too big. or is it the breaker to the air handler, which a 60 amp would be correct, any way usually if it is a short somewhere it will trip as soon as power is put to it, sounds like there is a loose connection somewhere, check your high voltage connections at the unit, at the unit disconnects, and even at the panel at the breakers. if all is tight then could possibly be a weak breaker.if i was any help please hit the accept button and if i can help any more let me know

Expert: HVACguy
Pos. Feedback: 100.0 %
Accepts: 
Answered: 3/16/2009

HVAC Technician

I have 28 years experience in installation ,service, and design.

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