Hi, I am having a problem with my Alpine MRV-F545 Displaying "VLT" error. I've checked wiring, grounding, subwiring, and battery. When my vehicle is on the volts displayed on amp when checked says 13.8V. I am stumped and not sure what more to do. Any ideas on what to do will be great.

Car Audio & Video - Alpine - MRV-F545 Car Audio Amplifier