Amp goes into protection mode when i turn up volume

I agree with David Flores, sounds like it is being overloaded tripping the protection mode which is most commonly due to your ohmage being to low.
Remember, the lower the ohmage, the greater the resistance.
The higher the ohmage, the lesser the resistance.
If the ohmage of your speakers is lower than what the amp is made (or rated) to handle, then your amp has to work harder to push that power threw them speakers.
Making your amp work harder than it is rated for pushes it to its limits that much easier/faster & the protection mode trips to save the amp from overworking to the point of *****/burn out.
Now as I stated above, ohmage is the most common problem, not the only problem.
There are other possibilities, such as, the amp over powering the speakers.
Over powering a speaker or running a faulty speaker can cause an open circuit which sends power & feed back, back to the amp which can cause the amp or the speaker channel on the amp to burn out so protection mode will trip once again to save the amp.
Any bare wires touching can cause the same result.
Anyway, there's a couple of things to consider & check out.
Hope this helps, keep us updated ??

I would suggest turning down the gain. Start by turning the gain all the way down Set the volume control to about 75% and slowly increase the gain til it starts cutting out, then reduce the gain til normal sound returns. It will now be set correctly.

Sounds like you are running your subs at to low of ohm. Amps are rated differently on the levels of ohms or resistance that they can get to. If you have a dual 4ohm sub and run it in pairrell it will drop to 2ohm and if you run the same sub in series it will be 8ohm. Your amp will go into protection if the ohm is to low.

-david