Update
Now the heater does not kick on anymore and i have a E01 error code.
I'm still working on educating myself to use the multimeter and on how to check the gas pressure. Got busy w Thanksgiving
I cleaned the ground wire connection. Still same problem. I just bought a true rms multimeter so I'll check the flame current soon. It's a cheap one though 20 bucks. And check gas pressure. Thank you for your guidance.