Maytag Dishwasher, Model MDB7749AWB2. Issue blowing circuit

[NealRm]

I have a dishwasher that is blowing a circuit before the drain cycle but after the wash cycle has run. I don't know if the wash cycle completed. 
I ran the washer through the diagnostics multiple times without issue. The main motor was replaced about a year ago, and I just replaced the heating coil. (I thought that was the issue due to an iffy resistance on the coil). The capacitor on the motor is in spec, the latch doesn't show sign of shorting. I am NOT seeing an water drips or broken wires. The hardwire connections are tight.

The washer is hardwired to a dedicated 20-amp circuit from a subpanel. The subpanel goes to a 50-amp breaker on the main panel. It is the 50-amp breaker that is tripping. Nothing else is running off the subpanel at the time, the washer is the only load. 

Where do I go from here? 

[NealRm]

181 views and not a single idea about what is happening????
 

I have replaced the circuit board, that did not resolve the issue.

Any suggestion on what to test, what to look for, any suggestions at all would help.

 

[Vance R]

The dishwasher is on a 20 amp breaker that doesn't trip, but the 50 amp breaker is tripping. Most dishwasher draw around 8 or 9 amp with the heater turned on.  Thinking the total amperage draw on the 50 amp breaker is being exceeded by combination of the circuits it is feeding.  Need to find out what circuits are being fed by the 50 amp breaker and make adjustments.  Or you just have a weak 50 breaker.

[NealRm]

On 2/7/2023 at 7:50 PM, Vance R said:

The dishwasher is on a 20 amp breaker that doesn't trip, but the 50 amp breaker is tripping. Most dishwasher draw around 8 or 9 amp with the heater turned on.  Thinking the total amperage draw on the 50 amp breaker is being exceeded by combination of the circuits it is feeding.  Need to find out what circuits are being fed by the 50 amp breaker and make adjustments.  Or you just have a weak 50 breaker.

It did turn out to be an issue at the breaker. One of the wires going into the breaker wasn't attached. It was just pressing against the backside of the wire clamp. Apparently, the electrician that changed out the box a few years ago didn't check his work. Only the bend of the wire was allowing it to maintain contact. The arcing grew worse over the years and the heat is what was tripping the breaker. The end of the wire was charred from the heat. 

The breaker had to be replaced because of the welded wire contact. I was able to cut off the wire end and still have enough to make a good connection with the new breaker. Now everything works as it should.

I do have an extra control panel I purchase as part of the troubleshooting if anyone is interested.