For your information, after discussed with Solar Vendor, I have conclusion that all of new HMI (TG-5610/20/30) will show only engine fired hours since engine change out. (0-40,000 hours maximum)
That’s mean, Solar Vendor will be reset engine fired hours meter on HMI every times when engine changed out. (Old panel can not reset)
For TG5610/20 engine fired hours, it is currently engine fired hours since engine changed out.