If the H10 remote is RF mode, use your H24 remote to put the receiver into RF mode as well, through the receiver menu, once receiver no longer responds to the H24 remote, do the following on the H10 remote:
1. dtv
2. press and hold MUTE & SELECT, wait for two blinks, release
3. enter 0 0 0 0 1
4. press and hold MUTE & SELECT, wait for two blinks, release
5. enter 9 6 1
6. press CH UP
7. enter last 6 digits of Receiver ID #(RID), found on a sticker in the access card compartment
8. press SELECT
Putting receiver into RF mode is two stage process, first receiver and than remote. Doing it to just one or the other, won't work.