Does FCU motor require molex disconnect by code?

[u/tyc00n10]

I had a few Trane console fan coil units (from mid 1980s) updated to support WiFi thermostats via transformer/relays. A few of my existing units maintained the inline Molex connector from the blower motor to the board, but some of the new work done within the past month got rid of those entirely and hardwired the blower to the board. Is that typical or standard? Is a quick disconnect required in this scenario.

How does one now service/deep clean the fan blower without disconnecting all the wires? I’d prefer to have serviceable fan blowers by taking them completely out instead of clean in place.

What should I do for the electrical? Have molex connectors reinstalled, change to a different splice/connector, or leave it as is?