NBXR453EV0WW Hotpoint Dryer - Overview

The end repair was very simple and took minimal effort. The time and difficulty was all in the testing. I disassembled the dryer and removed the drum and then hard wired each thermo-fuse to determine where the fault was. After test all of those I was stumped. When I opened the door the light would not come on so I assumed it was a power fault closer to the source. However after all of my testing I couldn't find anything wrong. I then removed the light bulb and realized it was burned out which led me to the door switch being the fault. I removed the switch and soldered the three wire together and the dryer started right up! All I had to do was order a new $15 part, unsolder the wires and plug them in. Would have been so much simpler if that light bulb hadn't of been burned out causing me to over think my diagnosis. This was my first major appliance repair and I did it with only the help of the parts diagram provided on the website.

Doing some simple troubleshooting with the volt-ohm meter I determined that the door switch was failed.

The replacement door switch restored the motor circuit keeping my dryer in action.

The problem was intermittent. It only happened when the unit was first started. After it was restarted it usually worked until the load was dry. I looked at the schematics and saw that only the hi-temp therostat and the motor overload could stop the dryer completely. I put my volt meter on the hi-temp thermostat and ran the dryer. When the dryer stopped I realized the hi-temp therm. was tripping. I read the web site help for this symptom and the suggestion was the bias therm.
I replaced it and the unit worked.