TPA3118D2: FAULT pin always stay low

I have an EVM module with me, TPA3118D2EVM. I did a very simple hook-up by supplying the EVM with 12V and connected a 4ohm load. Input signal is 50mVrms 1kHz sinewave. At early stage, I managed to obtain amplified output at the 4ohm load. I tried increasing the input level slowly and at a point, the output disappear. I power off the supply and turn on again, and no more output at the load. I checked, the Fault pin is always low. I followed the instruction at section 7.3.9 & 7.3.10 to remove the protection latch but to no avail. Kindly advise why the Fault could not recover and always stays at low. Thanks.