You may need to change the Power Saver/Sleep setting on your DIRECTV DVR.
DIRECTV HD DVR, HD, and DVR (R22 only) receivers have a power-saving feature that automatically puts the receiver in standby after four hours of inactivity. If you leave home for more than 4 hours, we suggest disabling the automatic power-saving mode so your pup can enjoy DOGTV uninterrupted.
Click the MENU button on your remote
Select Power Saving