The RPM is limited by the EHPT and M1HI functions in the ECM board.
1. Turn EHPT off.
2. Make changes to the RPM's for high speed. H1, AH1, E1M1 and E2M1 if applicable.
3. Change M1HI to from 42 to 60.
4. Turn EHPT on.
NOTES:
Noise levels will be higher.
You can adjust fan lower than 1330 and 1200 (for size 2000) however do not adjust higher than the high static RPM levels.
Refer to the Installation manual UV-SVX004G-EN in section ECM overview and set-up for more details on how to adjust parameters.