DRV8243-Q1: over temperature fault report problem

Hello experts,

Hope you are doing well.

Our customer encountered a problem when utilize DRV8243-Q1 in thermal management project:

When they utilize heat guns to detect over temperature fault, but the device didn't report the TSD fault, however, the actual action comply with SCG fault: 

OUT1; OUT2 are set to 0, and OLP_CMP keep L,L,L.

After temp decrease down, the device would get back to normal state from SCG.

Could you please help analyze the problem.

Thank you.

Best regards.