The "chime" may be a fault code. What is the pattern of lights on the panel when it occurs? Is the Lid Lock indicator lit when the lock engages?
Diagnostic mode:
- With machine off, press/hold Auto Dry Down and then press Power at the same time.
- There are several diagnostic levels but some are used during development and factory assembly, not relevant to field service.
- Last Fault is relevant. Press Auto Dry Up three times. The pattern of LEDs on the drying progress scale indicates the code.
- Sensor Conductivity. Press Auto Dry Up twice more (or five times from the beginning of diagnostic access). Touch the sensor bars with fingers or a damp cloth, and release. The LED pattern on the panel will/should vary per sensing and dissipation of moisture.
There is no belt-break switch. There is a manual-reset overheat thermostat on the heater box but it cuts power only to the elements.