Potential Maytag wax motor meltdown?

Yesterday, I received an email from a customer asking: "Jeff just curious why the wax motors on the door lock fail but the ones on the bleach and softner don’t (model 3000) ???" 

I responded: "Hi, I'm not sure why the door lock wax motors fail but the bleach / softener ones do not... I have not sold a WM to replace the bleach and softener WM's in the two years I have been supplying them except for yours. It could have something to do with the time the wax motors are activated. The door lock WM gets a lot more run time than the others. 

Then it dawned on me that maybe all of the Neptune wax motors should be replaced. If you did not see the picture of the wax motor meltdown please take a look at my last post. This failed 12002535 wax motor was located in the detergent dispenser of a MAH3000 Neptune. 

I wondered if the door latch wax motor would melt down if it weren’t for the sacrificial Q6 triac. I believe it would meltdown as it did in the photo. The reason, when the Q6 triac on the machine control board shorts out internally and fails it severely limits the current to the wax motor. This allows the door latch wax motor to not draw enough current to really disintegrate where as the failed wax motor in the photo tripped the circuit breaker because it is fed directly by the timer contacts which can supply much more current than the Q6 triac can. 

It is true the door lock wax motor gets more use than the bleach and softener wax motors do. So maybe it is a matter of time before the two wax motors in the dispenser go? I don't believe the wax motor in the picture would have burned up so badly with the first breaker trip. But what concerns me is the multiple breaker trips and resets customers might apply to a failed wax motor simply trying to investigate what is tripping the breaker... I will continue my thoughts on this post next time.