I will try to assist you
Is your breaker tripping that feeds the indoor unit or the outdoor unit?
The ARUF is the indoor unit.Do you have a heat pump or straight electric heat? Is the breaker that is tripping suppling power to the indoor unit, the outdoor unit or both?
It supplies the indoor unit. It is a straight electric heat.
How many KW of heat do you have
There should be a label on the front of the ARIF air handler that states how many heat strips are installed
I dont recall the kw amount, but each set of elements are reated at 18.8 amps and the max operating amp is 20/20. can you determine the kw with the model? The unit also has a part no. on it. #14310-04
When the unit comes from the factory, it does not have any heat strips.The installer installs either 5KW,10KW or 15KW heat kit.The original label from factory showing amp draw does not include heat strips.
There are three
The model number you listed shows no heat (thus the 36-00).
If you have three elements, you have 15 KW heat
This is why breaker is tripping
yes you are correct
Technically a 5 kw strip can draw as much as 22 amps
So 3 five kw strips will draw as much as 66 amps plus whatever the blower drwas
There is a 60 amp breaker in the inside unit, but it does not trip.
Can you tell me where the third strip gets its power ? Normally if you have 15 KW you will have both a 60 amp breaker feeding 2 stips as well as a 30 amp breaker feeding the third element,Do you not have the second breaker at the air handler?
If the unit is drawing too many amps. shouldnt the inside break trip also? because it feeds from the supply box.
Do you not have 2 breakers on the air handler
Yes, there is a 30 amp, and a 60 amp
Do you have two different power sources feeding the two breakers or just the one that is coming from the 60 amp in main panel?
sorry I had to leave you. I am at home now. My unit has both a 60 and 30 amp breaker in the air handler as well as a 60 and 30 amp breaker in the main panel. The 60 amp out side is the one that trips.
Ok, so you do already have two seperate breakers feeding the air handler.That is good. Next lets look at the 60 amp that is tripping.What size wire do they have ran between the main panel and air handler?It should be at least #6 copper .We can go from there
Do you have an amp meter to verify that all elements work? I would say you could have an element in the air handler that could be shorting to trip the breaker.I do not believe that two elements are drawing enough amps to trip it.But I am like you, I would think the breaker on front of air handler would trip. It really sounds like your breaker itself is getting hot.Have you looked at the buss bars where the breaker plugs into the main panel to verify the breaker bus bar is making a good connection?
This definitely sounds like a loose connection overheating rather than over amps.I just cannot tell you why the one in the air handler doesn't trip.The only thing I can think is that the big breakers in the Goodman unit are not true rated breakers, but rather disconnects
I WILL REPLACE THE CONNECTORS ON THE WIRES AND CONTACT YOU AGAIN IF IT CONTINUES. BUT THANKS, XXXXX XXXXX ACCEPTED YOU HELP