Error F04 then F06 on Hotpoint TDWSF83BEP?

For the above dryer, a suggestion to look at heater assembly.
Found thermal link blown. Replaced with another 180c part.

Still F04 fault display, checked all pump and filter sensors and fault now changed to F06 which points to door lock but there is no door lock. Only thing on door is a micro sw on lever which is switching on/off. Still have F06 and all sensor lights flashing.
Need some positive direction here?

Bill H.
January 2020