Compressor cycling off/on. Could be compressor or compressor inverter. Only way to know would be to try replacing the inverter and see if it recovers.

Wash motor just hums even after turning by hand. Wash motor part # 00239144 is discontinued. Cannot repair without this part.

Reset safety limit. Heating now. Recommend never using self-clean on this model.

Cannot access dryer in any way. Stacked on the washer, on a pedestal, enclosed in a cabinet. Cannot even test without the dryer being removed from the washer and customer would have to provide access. Symptoms suggest the main control board. Control part #DC92-00123D is discontinued.

Unit cooling but not to proper temps. Found condenser coils packed with dust. Cleaned. Likely that the compressor was overheating. Allow 24 hrs to cool. Also flashing 'Er'. This could simply be due to over temp or could have a sensor error. Could not get specific error code to recall. May need to replace a sensor if the error does not go away after it gets cold.